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  • Artikel  (31.781)
  • 1970-1974  (31.781)
  • Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft  (23.580)
  • Architektur, Bauingenieurwesen, Vermessung  (8.820)
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  • Artikel  (31.781)
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  • 1
    Digitale Medien
    Digitale Medien
    EXPERIENCES IN PHOTOGRAPHIC SURVEYING (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: The author outlines his experiences of photographic surveying, in the early years of the 1930's in the Survey of India, which involved the use of simple graphical methods of plotting.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01208.x
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  • 2
    Digitale Medien
    Digitale Medien
    AIRFLOW PATTERNS FROM PHOTOGRAMMETRIC MEASUREMENTS OF WINDBLOWN TIMBER (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: Aerial photography may be used to quickly locate and measure the extent and severity of forest damage due to windblow. This paper describes such an application in a small area of semi-natural woodland in central Scotland after the “Great Gale” of 14th and 15th January, 1968. A 1 : 2000 scale map, showing the location and direction of fall of each windblown tree, suggests certain relationships between topography and the severity of woodland damage and gives considerable information on the airflow pattern existing over the area during the gale.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01213.x
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  • 3
    Digitale Medien
    Digitale Medien
    The Ottawa Congress (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01219.x
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  • 4
    Digitale Medien
    Digitale Medien
    THE OTTAWA CONGRESS (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: The International Society for Photogrammetry held the XIIth International Congress at Ottawa during July and August 1972. The authors comprised a panel which engaged in discussion upon the Congress at a meeting of the Photogrammetric Society on 17th October, 1972.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01186.x
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  • 5
    Digitale Medien
    Digitale Medien
    ANNUAL GENERAL MEETING, 1972 (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01192.x
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  • 6
    Digitale Medien
    Digitale Medien
    ORTHOPHOTOGRAPHY APPLIED TO THE PLANNING OF STONEHOUSE NEW TOWN (1974)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 8 (1974), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: Distinct benefits have been obtained from the use of orthophotography in the initial planning of Scotland's sixth new town, to be located at Stonehouse, 29 km south east of Glasgow, due to a comprehensive approach to the mapping requirements. This paper discusses some of the details of the orthophotomapping project.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméL'orthophotographie s'est révélée d'un usage fort intéressant pour les études d'implantation de la sixième ville nouvelle d'Écosse (Stonehouse, 29 km au S.E. de Glasgow). On discute quelques aspects du projet d'orthophotoplan.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungDeutliche Vorteile ergaben sich aus der Anwendung der Differentialent-zerrung bei der Vorplanung für Schottlands 6. neue Stadt, die in der Nähe von Stonehouse, 29 km südöstlich von Glasgow liegen soll, infolge der umfassenden Befriedigung der Anforderungen an die Kartenherstellung. Im Artikel werden einige Details des Orthophotokarten-Projektes diskutiert.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1974.tb00036.x
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  • 7
    Digitale Medien
    Digitale Medien
    DIMENSIONAL QUALITY CONTROL OF LARGE SHIP STRUCTURES BY PHOTOGRAMMETRY (1974)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 8 (1974), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: This paper describes work carried out jointly by the British Ship Research Association and the author to assess the value of photogrammetry in acquiring quality control measurements on large steel structures in the shipbuilding industry. In particular, the feasibility of using photogrammetry to resolve one of the problems of joining half ships afloat (that is the dimensional equivalence of the mating faces) is investigated.〈section xml:id="abs1-2"〉〈title type="main"〉Résumé On décrit le travail mené conjointement par la British Ship Research Association et l'auteur pour tester la valeur des méthodes photogrammétriques dans le contrôle de précision de grandes structures d'acier (industrie navale). En particulier on a cherché dans quelles mesure on pouvait utiliser la photogrammétrie pour vérifier la conformité de piéces devant entrer en jonction.〈section xml:id="abs1-3"〉〈title type="main"〉Zusammenfassung Im Artikel werden die gemeinsam vom Autor und der British Ship Research Association durchgeführten Untersuchungen zwecks Eignung der Photogrammetrie bei Gütekontrollen grosser Stahlkonstruktionen im Schiffbau beschrieben. Insbesondere wurde die Anwendungsmöglichkeit der Photogrammetrie bei der Lösung einiger der beim Verbinden schwimmender halber Schiffe auftretenden Probleme untersucht (um die Grössenordnung der Aufnahmeobjekte zu veranschaulichen).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1974.tb00035.x
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  • 8
    Digitale Medien
    Digitale Medien
    THE PHOTOGRAMMETRIC MEASUREMENT OF CONSTRUCTIONAL DISPLACEMENTS OF A ROCKFILL DAM (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: A phototheodolite was used during the construction of Llyn Brianne dam to provide stereoscopic coverage of both upstream and downstream shoulders of the dam at each of eight stages of construction. Ground control was established on the valley sides, together with 80 targeted points at various levels on the dam as it progressed. The co-ordinates of the targeted points were determined numerically using a Wild A7. Three dimensional displacements were determined from the change of position to an average accuracy of 0–05 m. Agreement was obtained with independent and more precise measurements and comparisons are made with the upstream displacements. The assumptions of an analytical prediction technique are examined. Profile lines through the dam were also obtained numerically to record the progressing shape of the dam.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01203.x
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  • 9
    Digitale Medien
    Digitale Medien
    PRACTICAL EXPERIENCES AND PRESENT RESEARCH OBJECTS IN THE FIELD OF ANALYTICAL BLOCK TRIANGULATION WITH THE BUNDLE ADJUSTMENT METHOD IN FINLAND (1974)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 8 (1974), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: The Photogrammetric Society was honoured to be addressed by the Congress Director of the International Society for Photogrammetry during March 1974. Professor Halonen's lecture covered several aspects of current photogrammetric research in Finland. The following account contains contributions by two of his colleagues, J. Hakkarainen and H. Salmenperä, on specific aspects of lens distortion and block adjustment.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1974.tb00038.x
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  • 10
    Digitale Medien
    Digitale Medien
    BOOK REVIEWS (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: Book reviews in this article:A LAND SYSTEM ATLAS OF WESTERN KENYA. By R. M. Scott, R. Webster and C. J. Lawrance.THE OVERHAUL OF THE 1 : 2500 COUNTY SERIES OF MAPS. Ordnance Survey Professional Paper No. 25, Ordnance Survey of Great Britain, Southampton.TERRAIN ANALYSIS: A GUIDE TO SITE SELECTION USING AERIAL PHOTOGRAPHIC INTERPRETATION. By D. S. Way.PROCEEDINGS OF MAN-MACHINE INTERFACE IN PHOTOGRAM-METRY. Edited by E. Dorrer.ELEMENTARY AIR SURVEY. By W. K. Kilford.CARTOGRAPHIE GÉNÉRALE. Tome II: Méthodes et techniques de production. By R. Cuenin.INTERNATIONAL YEARBOOK OF CARTOGRAPHY (Vol. XII, 1972). Edited by E. Arnberger and F. AuradaRESOURCE SATELLITES AND REMOTE AIRBORNE SENSING FOR CANADA. Proceedings of the First Canadian Symposium on Remote Sensing, Ottawa, February 1972. Edited by D. White.LIBYA: AGRICULTURE AND ECONOMIC DEVELOPMENT. Edited by J. A. Allan, K. S. McLachlan and E. T. Penrose.ÉTUDE EXPÉRIMENTALE DE ĽAÉROTRIANGULATION SEMI-ANALYTIQUE. RAPPORT SUR ĽESSAI “GRAMASTETTEN”. Publication Officielle No. 7 de ľOrganisation Européenne ďÉtudes Photo-grammétriques Expérimentales. By P. Wiser.COORDINATE SYSTEMS AND MAP PROJECTIONS. By D. H. Maling.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01216.x
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  • 11
    Digitale Medien
    Digitale Medien
    OBITUARY (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
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    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01221.x
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  • 12
    Digitale Medien
    Digitale Medien
    THE USE OF PHOTOGRAPHIC METHODS FOR TRAFFIC DATA COLLECTION (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: Several problems are encountered when collecting traffic information by conventional methods and which leave scope for the development of more comprehensive techniques. This paper reviews the potential of different types of photography as an effective means of obtaining comprehensive traffic information. Comparisons between conventional methods and photographic methods are made. The different types of available photography are discussed, together with their uses in the field of traffic data acquisition. Finally, the paper assesses the use of automatic and semiautomatic methods of photographic data analysis in this context.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01189.x
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  • 13
    Digitale Medien
    Digitale Medien
    BOOK REVIEWS (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: Book reviews in this article:PHOTOGRAMMETRIC GUIDE. By J. Albertz and W. Kreiling.THE READJUSTMENT OF THE RETRIANGULATION OF GREAT BRITAIN, AND ITS RELATIONSHIP TO THE EUROPEAN TERRESTRIAL AND SATELLITE NETWORKS. By V. Ashkenazi, P. A. Cross, M. J. K. Davies and D. W. Proctor.GUIDE TO SITE SURVEYING. Edited by R. Hewitt.PHOTOGRAMMÉTRIE GÉNÉRALE. By H. Bonneval.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01195.x
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  • 14
    Digitale Medien
    Digitale Medien
    PHOTOGRAMMETRY IN THE NATIONAL SURVEY (1972)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1972), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: The Ordnance Survey makes extensive use of air survey in its mapping programmes at scales of 1 : 1250, 1 : 2500 and 1 : 10 000. A short history of the development of air survey within the Ordnance Survey leads into a description of current methods including the flying, processing and aerial triangulation tasks as well as the plotting of the maps by instrumental or graphical means.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1972.tb01174.x
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  • 15
    Digitale Medien
    Digitale Medien
    THE MODIFICATION OF A TOPOGRAPHIC PLOTTER AND ITS APPLICATION IN THE THREE DIMENSIONAL PLOTTING OF STEREOMICROGRAPHS (1972)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1972), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: A number of proposals have been put forward for the extraction of three dimensional data from a pair of electron microscope photographs taken from different angles. The methods used have, in general, been either point by point analyses or rather inconvenient. This paper shows that an existing photogrammetric plotter of topographic accuracy can, with very simple modification, be converted to give continuous plotting facilities from certain such micrographs.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1972.tb01177.x
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  • 16
    Digitale Medien
    Digitale Medien
    NOTES (1972)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1972), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1972.tb01182.x
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  • 17
    Digitale Medien
    Digitale Medien
    REMINISCENCES OF A ROVING PHOTOGRAMMETRIST (1972)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1972), S. 0 
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    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: The author reminisces upon a career of almost 40 years as a practising surveyor photogrammetrist, both as a Royal Engineer officer and as a director of a commercial survey organisation. The reminiscences include service with the Survey of India, war time operations in the Middle East and South East Asia Command, and commercial surveys of all types in developing countries. Professional service with international surveying and photogrammetric organisations is also mentioned, with particular reference to the fraternal aspects of international photogrammetry.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1972.tb01157.x
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  • 18
    Digitale Medien
    Digitale Medien
    THE MEASUREMENT OF MODELS WITH PARTICULAR REFERENCE TO A SUSPENDED ROOF STRUCTURE (1972)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1972), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: An increasing number of applications of photogrammetry are concerned with the analysis of models, constructed to simulate proposed or existing conditions in architecture and engineering. The paper draws attention to some of these projects and reports one example in detail.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1972.tb01160.x
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  • 19
    Digitale Medien
    Digitale Medien
    INTERNATIONAL SOCIETY FOR PHOTOGRAMMETRY (1972)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1972), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1972.tb01162.x
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  • 20
    Digitale Medien
    Digitale Medien
    COMPUTER SYSTEMS IN HIGHWAY DESIGN (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01193.x
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  • 21
    Digitale Medien
    Digitale Medien
    Volume Determination from Irregularly Placed Spot Heights (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01197.x
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  • 22
    Digitale Medien
    Digitale Medien
    USES OF PHOTOGRAMMETRY IN THE STUDY OF BUILDINGS (1972)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1972), S. 0 
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    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: The author describes the photogrammetric equipment in use by the Royal Commission on Historical Monuments (England), the methods used and the work that is being done in architectural recording. The difficulties and the possibilities of future architectural work in the United Kingdom are discussed and the achievements of some other countries in this field are reviewed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1972.tb01173.x
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  • 23
    Digitale Medien
    Digitale Medien
    THE USE OF PHOTOGRAPHIC METHODS IN HIGHWAY AND TRAFFIC ENGINEERING (1972)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1972), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1972.tb01179.x
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  • 24
    Digitale Medien
    Digitale Medien
    THE PHOTOGRAMMETRIC SOCIETY SYMPOSIUM, 1971 (1971)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1971), S. 0 
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    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: Four papers were read during the first symposium to be held by the Photogrammetric Society, at the University of Birmingham on 3rd and 4th April. Major General R. LI. Brown examined the staff structure of the organisations engaged upon the photogrammetric production of maps in the United Kingdom. Mr. J. R. Hollwey outlined the syllabus for a new Higher National Certificate in photogrammetry during a session which was devoted to education and qualifications. Subsequently, Professor A. J. van der Weele explained the evolution of the courses at ITC. By way of contrast, Professor E. H. Thompson attempted a forecast of developments in photogrammetry during the next decade. The papers succeeded in initiating prolonged discussion among the 80 members who attended.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1971.tb01142.x
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  • 25
    Digitale Medien
    Digitale Medien
    DETERMINATION OF THE WIND VECTOR IN THE LOWER ATMOSPHERE BY STEREOPHOTOGRAMMETRIC SURVEYS OF SMOKE MARKS (1971)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1971), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: A method is described for determining wind vectors in the lower atmosphere from terrestrial stereophotography. The photographs were taken with specially adapted aerial cameras using the normal or parallel averted case with horizontal camera axes. The most favourable photographic registration was obtained on ORWO UT 16 colour reversal film. Photograph co-ordinates and horizontal parallaxes were measured and recorded on punched tape with the Zeiss (Jena) stecometer. Vector components, which were calculated from co-ordinate differences, and a statistical analysis were obtained by using an electronic computer.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1971.tb01145.x
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  • 26
    Digitale Medien
    Digitale Medien
    PHOTOGRAMMETRY ROUND THE WORLD (1971)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1971), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1971.tb01150.x
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  • 27
    Digitale Medien
    Digitale Medien
    ANNUAL GENERAL MEETING, 1970 (1971)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1971), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1971.tb01132.x
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  • 28
    Digitale Medien
    Digitale Medien
    THE MEASUREMENT AND COMPARISON OF TOOTH SHAPE USING PHOTOGRAMMETRY (1974)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 8 (1974), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: The current methods for describing and comparing shapes of teeth have a number of inadequacies which lead to inaccuracy and misinterpretation. A method is described which depends on co-ordinate information. Stereoscopic microphotography of teeth crowns is used to take co-ordinates of up to 600 points on the tooth surface. Mathematical surfaces are fitted to the co-ordinates by the method of least squares and analysed by trend surface analysis. The results show that this is a useful method of describing a complex shape, although there are problems which render comparison more difficult.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméLes méthodes qu'on utilise généralement pour décrire et comparer les formes des dents sont de par leur nature imprécises et peu sûres. On décrit une méthode basée sur l'utilisation de coordonnées tridimensionnelles. A partir de micro-stéréogrammes de couronnes dentaires, on relève les coordonnées de près de 600 points de la surface de la dent. Ce semis est ensuite lissé par des surfaces mathématiques et étudié par les méthodes de l'analyse des surfaces. On conclut qu'il s'agit d'une utile méthode de description d'une forme complexe, quoique les comparaisons de dent à dent restent difficiles.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungDie gegenwärtigen Methoden zur Beschreibung und zum Vergleich von Zahnformen weisen eine Reihe von Unzulänglichkeiten auf, die zu Ungenauig-keiten und Fehlinterpretationen führen. Es wird ein auf der Koordinatenin-formation beruhendes Verfahren beschrieben. Dabei wird die Stereomikro-photographie von Zahnkronen zur Ermittlung der Koordinaten von bis zu 600 Punkten auf der Zahnoberfläche angewendet. Die mathematische Oberfläche wird mit Hilfe der Methode der kleinsten Quadrate bestmöglich den gegebenen Koordinaten angepasst und durch Oberflächentrendanalyse überprüft. Die Ergebnisse zeigen, dass es sich um ein brauchbares Verfahren zur Beschreibung komplexer Formen handelt, obwohl es einige Probleme gibt, die den Vergleich erschweren.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1974.tb00044.x
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  • 29
    Digitale Medien
    Digitale Medien
    BOOK REVIEWS (1974)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 8 (1974), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: Book Reviewed in this article:TERRAIN EVALUATION. By C. W. Mitchell.ENVIRONMENTAL REMOTE SENSING: APPLICATIONS AND ACHIEVEMENTS. By E. C. Barrett and L. F. Curtis.MULTILINGUAL DICTIONARY OF TECHNICAL TERMS IN CARTOGRAPHY. Compiled by the International Cartographic Association.THE EARTH FROM SPACE. By J. Bodechtel and H. G. Gierloff-Emden.CARTOGRAPHIC DESIGN AND PRODUCTION. By J. S. Keates.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1974.tb00049.x
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  • 30
    Digitale Medien
    Digitale Medien
    ANNUAL GENERAL MEETING, 1973 (1974)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 8 (1974), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1974.tb01232.x
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  • 31
    Digitale Medien
    Digitale Medien
    PHOTOGRAMMETRY ROUND THE WORLD (1974)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 8 (1974), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1974.tb01234.x
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  • 32
    Digitale Medien
    Digitale Medien
    EDITORIAL (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01201.x
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  • 33
    Digitale Medien
    Digitale Medien
    ANALYTICAL AERIAL TRIANGULATION IN THE ROYAL AUSTRALIAN SURVEY CORPS (1974)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 8 (1974), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: In recent years analytical aerial triangulation in the Royal Australian Survey Corps has evolved to an advanced stage. Current procedures are described and future possibilities explored.〈section xml:id="abs1-2"〉〈title type="main"〉Résumé Ces dernières années les techniques d'aerotriangulation analytique, dans le Royal Australian Survey Corps ont beaucoup progressé. On décrit les méthodes employées et on fait quelques prospective.〈section xml:id="abs1-3"〉〈title type="main"〉Zusammensfassung In den letzten Jahren hat die analytische Aerotriangulation beim Royal Australian Survey Corps einen bedeutenden Stand ereicht. Die gegenwärtigen Technologien werden beschrieben und künftige Möglichkeiten untersucht.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1974.tb00042.x
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  • 34
    Digitale Medien
    Digitale Medien
    OBITUARY (1974)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 8 (1974), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1974.tb01237.x
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  • 35
    Digitale Medien
    Digitale Medien
    MEDIUM SCALE PHOTOGRAMMETRIC MAPPING AT THE DIRECTORATE OF OVERSEAS SURVEYS (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: The authors describe the photogrammetric procedures involved in the production of 1 : 50 000 scale mapping within the Directorate of Overseas Surveys, making specific reference to a project in Ethiopia.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01204.x
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  • 36
    Digitale Medien
    Digitale Medien
    THE STATUS OF THE OPTICAL TRANSFER FUNCTION IN THE CALIBRATION OF PHOTOGRAMMETRIC LENSES (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: The paper reviews the status of the optical transfer function (OTF) as a potential standard method for measuring the definition of photogrammetric camera lenses. The nature of the OTF and its relation to resolving power are explained. The limited success in obtaining agreement in international comparisons of OTF measurement and the programme of the Scientific Instrument Research Association group research project on the O TFare summarised. Some of the difficulties envisaged in applying the OTF as an ISP standard are discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01207.x
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  • 37
    Digitale Medien
    Digitale Medien
    CONTROLLING A 1:2500 SCALE ORTHOPHOTOMAPPING PROJECT IN THE UNITED KINGDOM (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: Orthophotomaps at 1 : 2500 scale, contoured at 1 m vertical intervals, have been produced for an area of 52 km2 from 1 : 10 000 scale photography especially flown for the project. Planimetric and height information on published Ordnance Survey 1 : 2500 scale maps was used as control for the aerial triangulation on which the orthophotomapping was based.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01211.x
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  • 38
    Digitale Medien
    Digitale Medien
    AN AUTOMATIC METHOD FOR HEIGHT PROFILE DETERMINATION (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: The paper describes a method for the automatic determination of height profiles in the stereomodel. The model is scanned automatically in epipolar planes. The photographic densities are recorded. The density values are correlated, either on or off line, to obtain the height profiles. The method was developed for the analytical plotter but can be applied to other photogrammetric instruments.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01212.x
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  • 39
    Digitale Medien
    Digitale Medien
    NOTES (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01217.x
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  • 40
    Digitale Medien
    Digitale Medien
    The Readjustment of the Retriangulation of Great Britain (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01220.x
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  • 41
    Digitale Medien
    Digitale Medien
    POINT TRANSFER FROM ONE PHOTOGRAPH TO ANOTHER (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: Experiments are described which compare point transfer from one photograph to another by stereoscopic and non-stereoscopic procedures. It is shown that, whereas it may be possible to achieve very high accuracies by both methods, the former method is more dependent for its accuracy on a high observer skill and is also more prone to occasional mistakes in identification.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01187.x
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  • 42
    Digitale Medien
    Digitale Medien
    EXPERIENCE WITH APPLICATIONS OF BLOCK ADJUSTMENT FOR LARGE SCALE SURVEYS (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: Methods and results of practical applications of block adjustment by independent model cadastral surveys are described. The wider implications of the results are assessed in conjunction with current research trends in the adjustment of extremely large blocks for small scale mapping and in the use of the bundle adjustment method.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01185.x
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  • 43
    Digitale Medien
    Digitale Medien
    PHOTOGRAMMETRIC DIGITISING AND EDITING UNDER COMPUTER CONTROL (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: Digitising from a photogrammetric instrument can be controlled by a unit specially designed for this purpose, or by a digital control computer. In the latter case, the digitising system is more flexible since alterations and additions to the real-time programs can easily be made to effect different digitising applications. The control computer can also be used in processing the digitised data.The use of such digital control in photogrammetry is as yet limited. The reasons are examined. The characteristics and real-time requirements of a computer controlled digitising system are stated. Different digitising and recording modes, identification numbers and editing arrangements are then given to illustrate the flexibility and limitations of such a system.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01190.x
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  • 44
    Digitale Medien
    Digitale Medien
    PHOTOGRAMMETRY ROUND THE WORLD (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01194.x
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  • 45
    Digitale Medien
    Digitale Medien
    Digital Maps (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01198.x
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  • 46
    Digitale Medien
    Digitale Medien
    Aerial Cameras as Museum Pieces (1973)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1973), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1973.tb01199.x
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  • 47
    Digitale Medien
    Digitale Medien
    DIGITAL GROUND MODELS: AN ACCOUNT OF RECENT RESEARCH (1972)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1972), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: The article discusses a general classification system applicable to digital ground models (D.G.M.) as used in highway design. Examples of the various categories are given, together with details of some advantages and disadvantages. The place of the D.G.M. in the highway design system is described in conjunction with traditional methods. The relationship between accuracy, density and economy of D.G.M. systems is examined. Finally an experiment is described which investigates the accuracy of various D.G.M. systems; it is being conducted by the Transport and Road Research Laboratory.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1972.tb01175.x
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  • 48
    Digitale Medien
    Digitale Medien
    PHOTOGRAMMETRY ROUND THE WORLD (1972)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1972), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1972.tb01180.x
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  • 49
    Digitale Medien
    Digitale Medien
    BOOK REVIEWS (1972)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1972), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: Book reviews in this article:OPTIMIZATION TECHNIQUES IN LENS DESIGN. By T. H. Jamieson.ADJUSTMENT BY LEAST SQUARES IN GEODESY AND PHOTOGRAM-METRY. By R. A. Hirvonen.AERIAL PHOTO-ECOLOGY. By J. A. Howard.PROCEEDINGS OF THE ISP COMMISSION IV SYMPOSIUM 1970. Editor J. Kure.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1972.tb01181.x
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  • 50
    Digitale Medien
    Digitale Medien
    PHOTOGRAMMETRY FOR MARINE STUDIES (1972)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 7 (1972), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: The use of aerial photography for hydrographic requirements is discussed, with particular reference to current circulation in an all water area. The paper examines the criteria and limitations imposed by an environment which is alien to normal topographic photogrammetry.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1972.tb01156.x
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  • 51
    Digitale Medien
    Digitale Medien
    EDITORIAL (1970)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 6 (1970), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1970.tb00963.x
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  • 52
    Digitale Medien
    Digitale Medien
    AN EXPERIMENT IN ADJUSTMENTS, USING SUPER-WIDE ANGLE PHOTOGRAPHY TAKEN FOR TOPOGRAPHIC MAPPING (1970)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 6 (1970), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: The paper describes an experiment using three different methods for the production of control for topographic mapping from super-wide angle photography. The result showed that aerial triangulation by independent models observed on a Wild A9 would show economic advantages in cartographic effort required, control requirements, and accuracy attained in contouring. The experiment also indicated that great benefit in heighting accuracy is derived from the addition of tie strips flown at right angles to the main photographic cover at a suitable interval and that heights supplied by airborne profile recorder are not sufficiently accurate to be economically advantageous where close interval contours are a requirement.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1970.tb00967.x
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  • 53
    Digitale Medien
    Digitale Medien
    SOME OBSERVATIONS AND RECOMMENDATIONS FOR THE FUTURE OF AERIAL COLOUR PHOTOGRAPHY (1970)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 6 (1970), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: The colour photograph requirements of the photogrammetrist and the photo-interpreter are not always compatible. The author puts forward suggestions for improving the quality and reducing the cost of photography for interpretation purposes, based on the use of 70 mm film cameras. He found supporting evidence for this point of view during his visit to the United States as the result of the award of a Winston Churchill Fellowship in 1969.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1970.tb00970.x
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  • 54
    Digitale Medien
    Digitale Medien
    ANNUAL GENERAL MEETING, 1969 (1970)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 6 (1970), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1970.tb00971.x
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  • 55
    Digitale Medien
    Digitale Medien
    OBITUARIES (1970)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 6 (1970), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1970.tb00975.x
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  • 56
    Digitale Medien
    Digitale Medien
    BOOK REVIEWS (1970)
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 6 (1970), S. 0 
    Details
    ISSN: 1477-9730
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Architektur, Bauingenieurwesen, Vermessung
    Notizen: Book reviews in this article:INTRODUCTION TO THE ALGEBRA OF MATRICES WITH SOME APPLICATIONS. By E. H. Thompson.BIBLIOGRAPHIE DES SCHRIFTTUMS AUF DEM GEBIET DER FORSTLICHEN LUFTBILDAUSWERTUNG 1887–1968. By G. Hildebrandt.INFRARED SYSTEM ENGINEERING. By R. D. Hudson.ELEMENTARY SURVEYING. By R. C. Brinker.REFERENCE GUIDE OUTLINE: SPECIFICATIONS FOR AERIAL SURVEYS AND MAPPING BY PHOTOGRAMMETRIC METHODS FOR HIGHWAYS.INTERNATIONAL YEARBOOK OF CARTOGRAPHY (VOL. VIII, 1968). Editor K. Frenzel.MODERN MAPS AND ATLASES. By C. B. M. LOCK.USE OF STRIPS CONNECTED TO BLOCKS FOR LARGE SCALE MAPPING. Results of Experimental Research Organized by Commission B of the O.E.E.P.E. from 1959 to 1966. By M. Cunietti.PRINCIPLES OF HOLOGRAPHY. By H. M. Smith.LA PHOTOGRAMMÉTRIE DES PLANS TOPOGRAPHIQUES ET PARCEL-LAIRES. By B. DUBUISSON.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1477-9730.1970.tb00973.x
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  • 57
    Digitale Medien
    Digitale Medien
    THE EFFECT OF SHOOLY LARVAE (DIPTERA) ON GRASS YIELD (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 29 (1974), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Elimination of shooly larvae increased grass yields daring the September feeding period. Increases were usually less than 10% bat in one case, where growth was abnormally slow, die increase was over 30% and in another, where the larval population was atypically dense, it was almost 60%. The effects of damage were not cumulative daring the feeding period; and at the end of this period insecticidreated plots sometimes gave lower yields than untreated plots. Fertilizer increases had a much greater effect on yield than did control of larvae and, where N was applied at 75 kg/ha (67 lb/ac) in spring, the additional effect of larval control was usually negligible. It is suggested that shoot-fly damage may be more serious in other localities.When turf containing shoot-fly larvae was ploughed, Oscinella spp. re-established themselves more successfully than others in seedling ryegrass bat did not damage the new sward appreciably.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1974.tb01264.x
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  • 58
    Digitale Medien
    Digitale Medien
    A TEMPERATURE INDICATOR FOR USE DURING OVEN-DRYING OF HERBAGE (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 29 (1974), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: The drying of small herbage samples should be as rapid as possible so as to limit respiratory loss and enzymatic interconversions, especially if certain nonstnictnral carbohydrates are to be assayed. An inexpensive thermo-switch is described that indicates the time required to heat a mass of tissue in an oven to a given temperature. The time required to heat green herbage to a temperature (55°C) that will inactivate respiratory enzymes can be determined.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1974.tb01266.x
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  • 59
    Digitale Medien
    Digitale Medien
    A LINEAR PROGRAMMING MODEL OF A HIGH-TEMPERATURE GRASS-DRYING ENTERPRISE (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 29 (1974), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: A linear programming model of a high-temperature grass-drying enterprise is described. From information about seasonal crop response, area of crop available and management constraints, the model determines the harvesting schedules which give greatest returns, less costs, from the enterprise over the season. This information can be used to examine the effects of long-term strategic decisions or to evaluate economically data on new crops from field experiments. For example, assuming a fixed cost of λ70,000/year for a high-temperature grass-drying installation and what is considered to be reliable input data for 1972, the returns less costs for optimum harvest schedules from different areas or crop varieties are:〈table colsep="0" rowsep="0" frame="topbot" pgwide="1" orient="port"〉〈tgroup cols="5" align="left"〉〈colspec colnum="1" colname="col1" align="center"/〉〈colspec colnum="2" colname="col2" align="center"/〉〈colspec colnum="3" colname="col3" align="center"/〉〈colspec colnum="4" colname="col4" align="center"/〉〈colspec colnum="5" colname="col5" align="center"/〉〈thead valign="bottom"〉〈entry namest="col1" nameend="col2" align="left"〉Corp areaSurplusGrass ac (ha)Lucerne ac (ha)Return, £Less costs £/ac(£/ha)crop ac (ha)〈tbody valign="top"〉800(324)0(0)42,849536(132.3)0(0)1000(405)0(0)60,286603(1489)205(83)600(243)200(81)46,73158.4(1442)0(0)800(324)200(81)65.66165.7(1621)109(44) The model can also provide information con cerning tbe limitations imposed by equipment stage of tbe process and management re straints sucb as limitations on overtime and shut downs for holidays or maintenance.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1974.tb01265.x
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  • 60
    Digitale Medien
    Digitale Medien
    THE EFFECT OF PESTICIDES ON THE YIELD AND BOTANICAL COMPOSITION OF A NEWLY-SOWN RYEGRASS LEY AND OF AN OLD MIXED PASTURE (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 29 (1974), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Newly-sown S24 perennial ryegrass at Hurley and old established ryegrass-dominant mixed pasture at Rothamsted were treated with several pesticides, singly and in combination, over the period 1969–73. Yields were either unaffected or increased by up to 30% in any one year, depending on the treatment, the newly-sown sward giving the more consistent response from year to year.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1974.tb01249.x
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  • 61
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    Digitale Medien
    A COMPARISON OF THE YIELDS OF FORAGE MAIZE GROWN FOR SILAGE IN 1972 AND 1973 AT THE NATIONAL INSTITUTE FOR RESEARCH IN DAIRYING (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 29 (1974), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: The DM production from INRA 200, an early maturing hybrid maize grown for silage, was 10±6 and 14 5 t/ha in mid-October 1972 and 1973 (4±2 and 5±8 tons/ac). The plant population in both years was approximately 112,000/ha (45,320/ac). Whole-crop and cob DM percentages were 18±2 and 21±3 for 1972 and 39±9 and 53±0 for 1973, respectively. The cob yields were 49 and 10±4 t/ha (2±0 and 4±1 tons/ac) in 1972 and 1973 and cob in the two years accounted for 46 and 72% of total yield. At harvest the 1973 crop was 4–6 weeks more mature than the 1972 crop. These differences were attributed to the difference in accumulated temperature recorded from May till October, which was 567°C days in 1972 and 817 in 1973. Whole-crop DM content, yield of cob and yield of cob as a percentage of total yield were studied against seasonal temperature accumulation. In the case of DM percentage there was a highly significant linear regression which showed that 627°C days were needed to mature maize to 24% DM content.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1974.tb01247.x
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  • 62
    Digitale Medien
    Digitale Medien
    LAND RESTORATION WITH PULVERIZED FUEL ASH (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 29 (1974), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Experiments were carried out with different depths of added topsoil, with different methods of cultivation and with different rates of application of fertilizers on an ash disposal site near Newark. Good yields of hay and wheat were obtained and were shown to vary systematically with the treatment of the plots. Good yields of wheat were obtained with a top dressing of 125 kg N/ha even on bare ash but, in contrast with the yields of DM from grass, yields of grain tended to increase with increasing depth of added soil. This pattern appeared to be influenced by the variations in spring rainfall. There appeared to be no adverse effects of uptake of trace elements from the ash.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1974.tb01252.x
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  • 63
    Digitale Medien
    Digitale Medien
    POTENTIAL PASTURE PRODUCTION IN THE UPLANDS OF WALES (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 29 (1974), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: The DM and N contribution of S184 white clover in mixed ryegrass/clover swards was recorded at Pant-y-dwr Hill Centre (305 m) for 4 years, 1967–70. By direct comparison with fertilized grass swards it was estimated that the clover N contribution on peaty gley soil averaged 100 kg N/ha per year (89 Ib N/ac) under cutting and 98 kg N/ha (87 ib/ac) under grazing with faecal return. On more fertile acid brown earth the corresponding contributions were 81 and 90 kg N/ha (72 and 80 Ib/ac). Full replacement of clover by N fertilizer would require average annual applications of 268, 229, 156 and 128 kg fertilizer N/ha, respectively (239, 204, 139 and 114 Ib N/ac).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1974.tb01253.x
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  • 64
    Digitale Medien
    Digitale Medien
    BOOK REVIEWS (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 29 (1974), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Book reviewed in this article:EYRE, S. R. (Editor) World vegetation types.SCHMIDT, W.; WETTERAU, H.; BEYRICH, H.; MÜLLER, M.; GOTTSCHLING, E.-M. [Silage production.] Silageherstellung.LAMBRECHTSEN, N. C. What grass is that? A guide to identification of some introduced grasses in New Zealand by vegetative characters.LEIGH, J. H.; NOBLE, J. C. (Editors) Plants for sheep in Australia.THURM, R. [Technology of agricultural production.] Technologie der landwirtschaftlichen Produktion.TAYLOR, S. A.; ASHCROFT, G. L. Physical edaphology. The physics of irrigated and nonirrigated soils.DAVIES, D. B.; EAGLE, D. J.; FINNEY, J. B. Soil management. Ipswich, Suffolk, UK, Farming Press Limited.OLSON, R. A.; ARMY, T. J.; HANWAY, J. J.; KILMER, V. J. (Editors) Fertilizer technology & use.PAPADAKIS, J. Auxins, biochemical plant interaction, growth retardants and dense high yielding crops. Córdoba, Argentina, J. Papadakis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1974.tb01256.x
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  • 65
    Digitale Medien
    Digitale Medien
    EVALUATION OF A CAPACITANCE METER FOR ESTIMATING HERBAGE PRODUCTION OF OAT CULTIVARS (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 29 (1974), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: An electronic pasture-meter was found to be of limited use for the routine estimation of DM production of oat cultivars for the reason that the relationship between the meter reading and DM varied with different cultivars.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1974.tb01241.x
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  • 66
    Digitale Medien
    Digitale Medien
    PRESIDENTIAL ADDRESS (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 29 (1974), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1974.tb01220.x
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  • 67
    Digitale Medien
    Digitale Medien
    A NOTE ON THE ERROR IN CALCULATING ORGANIC MATTER DIGESTIBILrrY FROM DRY-MATTER DIGESTIBILITY (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 29 (1974), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1974.tb01223.x
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  • 68
    Digitale Medien
    Digitale Medien
    THE EFFECT OF LEAF NUMBER ON THE SENSITIVITY OF RED CLOVER SEEDLINGS TO PHOTOPERIODIC INDUCTION (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 29 (1974), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: The duration of the juvenile phase in early-flowering (Dorset Marl) and late-flowering (S123) red clover is described. Neither cultivar responded to inductive conditions at the first leaf stage but Dorset Marl attained maximum sensitivity by the 3-leaf stage. A comparable response was obtained with S123 only after the production of 12–13 leaves. The growth characteristics of the two types under continuous long or short days are described and possible explanations are advanced for the characteristic differences in tillering and stem internode number.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1974.tb01224.x
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  • 69
    Digitale Medien
    Digitale Medien
    THE EFFECTS OF DEFOLIATION ON EMERGENT ANNUAL GRASS SWARDS UNDER SIMULATED GRAZING (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 29 (1974), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: For three weeks after emergence, micro-swards of Lolium rigidum were defoliated to a height and at a frequency which represented a range of set stocking rates of less than, similar to, and more than 7–8 sheep/ha as based on the results of Greenwood and Arnold (6) and referred to as D1, D2 and D3 respectively. The effects of these defoliation regimes on the growth and development of emergent swards were evaluated according to their effect on increments of DM from plant parts, rate of appearance of leaves and tillers, concentration of soluble carbohydrates, and on the uptake and concentration of inorganic nutrients.Defoliation began five days after emergence, when the dry weight of the shoot was 3g/m2. After 20 days of treatment, 6±7 g/m2 of DM had been removed from D1, 5±5 g/m2 from D2 and 51 g/m2 from D3; and the dry weight of shoot remaining was 13, 7 and 4±5 g/m2 on D1, D2 and D3 respectively. The effect of defoliation on dry weight of plant parts increased in severity in the order leaf 1, stem+sheaths, leaf 2, roots, leaf 3, tiller 1, tiller 2, leaf 4. Average relative growth rate of the sward was reduced from 17% per day on D1 to 13% per day on D3. There was no necrosis of root tissue. Emergence of the later leaves and of the tillers was retarded by up to three days by more frequent defoliation. Alcohol-soluble carbohydrates in the root fell from over 6% to about 1±5% on all treatments. Uptake of N. P and K was limited by increasing intensity of defoliation and because concentrations of those elements were not greatly affected, the limitation could be ascribed mainly to the effects of defoliation on plant size.The plausibility of the technique for the experimental simulation of grazing of emergent annual grass swards in Western Australia is discussed. It is concluded that for set-stocking rates of less than about 12 sheep/ha, grazing, while reducing DM production just after emergence, is unlikely to produce severe physiological stresses in the sward.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1974.tb01226.x
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  • 70
    Digitale Medien
    Digitale Medien
    STUDIES OF RESPONSE TO FERTILIZER NITROGEN (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 29 (1974), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: The uptake of N was measured in 2 successive regrowths harvested on 12 June and 13 Aug. following harvests of primary growths 8, 12, 16, 23, 29, 45 and 57 (12 June) days after applying N at 59, 118 or 177 kg N/ha on 16 Apr.Residual responses were obtained to both increments of N, leading to high apparent recoveries of fertilizer N, especially to the higher increment. This increased availability of soil N when high rates of N are applied is shown to vary with date of harvest of primary growth, reaching a maximum equivalent to 151% apparent fertilizer N recovery 23 days after N application.In the second regrowth, percentage N in the herbage showed a negative response to N applied to the primary growth. This appears to reflect a reduction in available soil N brought about by its increased availability and uptake in primary growth and first regrowth.The possibilities of improving the efficiency of fertilizer N by exploiting soil N are considered against the possible reduction in available N for future regrowths.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1974.tb01230.x
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  • 71
    Digitale Medien
    Digitale Medien
    A LOW-COST SYSTEM FOR GRAZING SMALL EXPERIMENTAL PLOTS (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 28 (1973), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: A technique using a lead running on a suspended wire, is described which allows small plots, e.g. 0.01 ha (1/40 ac) or less, to he grazed individually at 30% of the cost of conventional fencing. It also offers a means of minimizing the concentration of nutrients in dung on camp areas.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1973.tb00747.x
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  • 72
    Digitale Medien
    Digitale Medien
    THE EFFECT OF COMPANION GRASSES ON TIMOTHY PRODUCTION IN SWARDS CUT FOR CONSERVATION (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 28 (1973), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: To assess the effect of companion grasses on timothy productivity, swards of timothy sown alone or with one of eight companion grasses were harvested as for silage four times per year for two years. The companion grasses were: diploid perennial ryegrasses S24 and S23; tetraploid perennial ryegrasses Reveille and Taptoe; meadow fescues S215 and S53 and cocksfoots Trifolium and S143. Averaged over the N application rates (226, 339 and 452 kg N/ha per year) the total herhage yields of timothy/companion-grass mixtures were all significantly superior to that from timothy alone in the first year. Only perennial ryegrass S24 and the cocksfoot mixtures significantly outyielded timothy alone in the second year. Winterkill hecame evident in April of the second year and pure timothy and timothy/meadow-fescue swards were least affected. Over all swards, timothy DM increased hy a mean of 19% from the first to the second year, compared with a fall of 20% in total herhage DM. The contrihution of timothy herhage to the mixtures was very low with companions other than meadow fescue. Late-heading varieties were more compatihie than early-heading varieties, and tetraploid ryegrasses were more compatihie than diploid ryegrasses. It is concluded that if the inherently valuahle characteristics of timothy are to he exploited, it should not he sovm with aggressive companion grasses.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1973.tb00748.x
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  • 73
    Digitale Medien
    Digitale Medien
    POTENTIAL PASTURE PRODUCTION IN THE UPLANDS OF WALES (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 28 (1973), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Detailed soil and vegetation analysis at Pant-y-dwr Hill Centre illustrated the main physical, chemical and biological factors involved in low output from rough grazing on 5 soil series, ranging from acid brown earth to undifferentiated peat, which are representative of most of upland mid-Wales. While all the soils, derived from Silurian shale, had low pH and base saturation status and high lime, phosphate and potash requirements, the principal restraint on the productivity of resown grassland, particularly on the wet peaty gleys, was low available N status.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1973.tb00753.x
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  • 74
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    Digitale Medien
    CONVERSION TABLES FOR BRITISH AND METRIC WEIGHTS AND MEASURES (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 28 (1973), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1973.tb00756.x
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  • 75
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    Digitale Medien
    INFLUENCE OF DRYING AND STORAGE CONDITIONS ON NONSTRUCTURAL CARBOHYDRATE ANALYSIS OF HERBAGE TISSUE—A REVIEW (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 28 (1973), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: No one method of drying can be relied upon for all plant species, plant parts, or form (e.g., fresh v. ensiled herbage). Least changes in nonstructural carbohydrates appear to occur when fresh tissue is immersed in boiling alcohol. Freeze-drying provides results more similar to fresh tissue than heat-drying. Heat-drying at high temperatures (above 80°C) can cause thermo-cbemical degradation, while slow drying at low temperatures (below 50°C) allows time for DM losses by respiration and enzymatic conversions. The most acceptable heat-drying results have been obtained by drying for a short time at a high temperature (i.e. 100°C) and thereafter at a moderate temperature (i.e. 70°C).Changes in nonstructural carbohydrate concentrations occur during the storage of either freeze- or heat-dried tissues. Thus, analyses should be conducted as soon as possible after tissue sampling. The least changes occur during storage in alcohol, following killing of the tissue in boiling alcohol.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1973.tb00733.x
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  • 76
    Digitale Medien
    Digitale Medien
    SUMMARIES OF PAPERS READ AT THE SUMMER MEETING OF THE BRITISH GRASSLAND SOCIETY IN HEREFORDSHIRE (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 28 (1973), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1973.tb00741.x
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  • 77
    Digitale Medien
    Digitale Medien
    STUDIES OF RESPONSE TO FERTILIZER NITROGEN (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 28 (1973), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: The effects of 59, 118 or 177 kg N/ha were measured on 7 occasions from 8 to 57 days after application to a perennial ryegrass sward in terms of changes in composition.The first increase Dt of N significantly raised percentages of CP, non-protein N, K, P, Ca, Na and Mg and significantly depressed percentages of DM, OM and OM digestihility. The second increment of N resulted in a further rise in the percentages of CP, true protein, non-protein N, K, P, Ca, Na and Mg; the percentages of DM and OM were further depressed but OM digestihility was not significantly depressed. Percentages of P and Na showed increased responses for the more mature herbage; while percentage non-protein N showed a more marked response in younger herbage. As herbage matured percentages of OM and Na rose, the latter only from days 16 to 45. All other attributes showed falling percentages to levels which could be inadequate for a 500 kg dairy cow yielding 15 kg milk. CP percentage reached this critical level (1.4% N) at days 37, 45 or 56 given 59, 118 or 177 kg N/ha; P percentage became critically low (〈 0.36%) at days 27, 35 or 38, respectively; Mg percentage fell to the critical level (0.12%) at days 23, 35 and 46. Na percentage showed the reverse trend, being deficient (〈 0.13%) in the earliest samples and becoming satisfactory from days 23 or 27 at 118 and 177 kg N/ha but it remained inadequate at 59 kg N/ba.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1973.tb00740.x
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  • 78
    Digitale Medien
    Digitale Medien
    POTENTIAL PASTURE PRODUCTION IN THE UPLANDS OF WALES (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 28 (1973), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: A comprehensive study of the climatic, soil and vegetation restraints on grassland production in the hill areas of Britain is an essential preliminary stage in land use planning for those areas. Climatic data, recorded continuously at four centres in mid-Wales, emphasize the extent of altitudinal, topographic, seasonal and diurnal variation in zones with improvement potential. Annual solar energy income is negatively correlated with rainfall and cloud cover. Under wet conditions in the western hills, mean daily solar radiation during 1966–69 decreased by 15% between two centres at 30 and 305 m (103 and 1100 ft) 0.D. from 9.92 MJ/m2 to 7–07 MJ/m2= (204 to 169 cal/cm2). Radiation receipts in the drier eastern uplands at 305 m (1000 ft) were as high between May and August as in the western lowlands, but winter temperatures were considerably lower. Comparisons are made with conditions in other upland areas of Britain.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1973.tb00722.x
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  • 79
    Digitale Medien
    Digitale Medien
    THE MANAGEMENT OF LONG GRASS AS A BIRD REPELLENT ON AIRFIELDS (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 28 (1973), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Authorities responsible for the safety of aircraft have for a number of years been very concerned with the dangers and the damage caused by aircraft striking birds while in flight, particular since the introduction of the jet engine. Methods of reducing this risk have been sought, which have brought about the method of grass management described in this paper.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1973.tb00749.x
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  • 80
    Digitale Medien
    Digitale Medien
    SHEEP GRAZING PREFERENCES ON A SALTINGS PASTURE AND THEIR SIGNIFICANCE FOR WIGEON (ANAS PENELOPE L.) CONSERVATION (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 28 (1973), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Arising from the need to improve the palatability of tussocky, rank Festuca rubra swards to provide a greaer area of grazing for overwintering wigeon which avoided these swards, the effect of sheep grazing on these and close-mown F. rubra swards was studied by a point-quadrat method. This showed that close mowing improved the palatability of Festuca rubra swards for sheep to a degree comparable with swards made up of Puccinellia maritima and Agrostis stolonifera, for which sheep and wigeon had previonsly been shown to have a significant preference. The results of the study are discussed in relation to methods of managing an area of saltings pastnre made up of these two types of swards to increase the area of grazing available for wigeon; whilst still being compatible with the objectives of the grazier's sheep husbandry.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1973.tb00751.x
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  • 81
    Digitale Medien
    Digitale Medien
    PRESIDENTIAL ADDRESS (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 28 (1973), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1973.tb00712.x
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  • 82
    Digitale Medien
    Digitale Medien
    PASTURE YIELD INSTRUMENT USING A RADIO FREQUENCY BRIDGE (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 28 (1973), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: A single unit grass-meter has been developed to replace the twin transmitter-receiver units which have been in use since 1958.In the new design a radio-frequency capacitance bridge is mounted on top of a measuring head. Introduction of grass into the measuring head unbalances the bridge and the amount of unhalance, which is a function of the mass of the herbage, is indicated on a micro-ammeter. Two ranges are incorporated so that sheep pastures with short grass and cow pastures with long grass can be measured.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1973.tb00716.x
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  • 83
    Digitale Medien
    Digitale Medien
    SUMMARIES OF PAPERS READ AT THE WINTER MEETING OF THE BRITISH GRASSLAND SOCIETY IN LONDON 8 DECEMBER 1972 (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 28 (1973), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1973.tb00719.x
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  • 84
    Digitale Medien
    Digitale Medien
    CONVERSION TABLES FOR BRITISH AND METRIC WEIGHTS AND MEASURES (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 28 (1973), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1973.tb00721.x
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  • 85
    Digitale Medien
    Digitale Medien
    THE UTILIZATION OF DRIED GRASS BY EARLY WEANED LAMBS (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 27 (1972), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Three groups of 8 Polled Dorset Iambs were weaned at 8 weeks of age and were fed dried grass, a 50–50 mixture of dried grass and protein-supplemented barley and protein-supplemented barley. All rations were completed. Digestibility trials were also conducted and the effect of level of feed intake on nutrient digestibility investigated.The dried grass resulted in rates of gain comparable to those produced by the pelleted barley ration. Feed conversion efficiency was lowest for the grass and highest for the barley ration. An interaction between the dried grass and barley was observed in nutrient digestibility. Increasing the level of feeding from approximately maintenance to appetite tended to result in slight depressions in the digestibility of energy and protein of all rations.The results suggest that dried grass can be used successfully for intensive feeding of early weaned lambs and little nutritional advantage appears to be gained from combining dried grass with barley.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1972.tb01213.x
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  • 86
    Digitale Medien
    Digitale Medien
    HEADING DATES OF S24 PERENNIAL RYEGRASS AND SPRING TEMPERATURES (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 27 (1972), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: For spaced plants of Lolium perenne cv. S24 at the Welsh Plant Breeding Station, Aberystwyth, and at the National Institute of Agricultural Botany, Cambridge, linear relationships were obtained between the recorded heading dates and (a) mean March earth temperatures at 30 cm depth and (b) mean March plus mean April earth temperatures at 30 cm depth. The residual standard deviations were ±2.97 days and ±2.65 days, respectively, A mean March earth temperature of 8°C predicted heading on 5 May, 6° C predicted heading on 12 May, and 4°C predicted heading on 20 May. For sites with an average April temperature significantly below 8.7°C a correction of +2 days per degree mean temperature difference in April had to be applied to these dates. These equations could be used to predict dates for 50% ear emergence in swards with a 50% confidence limit of ±22 days for sites in Central and Southern England and Wales. In certain years, cold, wet weather in May appeared to delay heading considerably at two Scottish sites.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1972.tb01217.x
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  • 87
    Digitale Medien
    Digitale Medien
    BOOK REVIEWS (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 27 (1972), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Book reviewed in this article:BEST, K. F.; LOOMAN, J.; CAMPBELL, J. B. Prairie grasses identified and described by vegetative charactersSHLYK, A. A. Chlorophyll metabolism in green plantsDEVLIN, R. M.; BARKER, A. V. PhotosynthesisEVANS, L. T. (Editor). The induction of floweringMACHLIS, L.; BRIGGS, W. R.; PARK, R. B. (Editors). Annual review of plant physiology.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1972.tb01219.x
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  • 88
    Digitale Medien
    Digitale Medien
    A PORTABLE-CORRAL TECHNIQUE FOR MEASURING THE EFFECT OF GRAZING INTENSITY ON YIELD, QUALITY AND INTAKE OF HERBAGE (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 27 (1972), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: A grazing experiment using four stocking rates of sheep, equivalent to 34, 45, 57 and 68 sheep/ha on an assumed 200-day grazing season, was conducted using a portable grazing corral technique. Plots were subjected to fotir grazing periods between mid May and early September. The effect of stocking rate on herbage yield and quality and the influence of these factors and feed intake on liveweights of the sheep were recorded.The mean daily herbage organic matter available over the trial was 9.6, 5.8, 3.3 and 23% of the total liveweight of the sheep at each of the four stocking rates. The highest grazing pressure led to the production of high-quality herbage, but also led to reduced productivity, low feed intake and liveweight losses. The most lenient grazing pressure failed to provide adequate herbage utilization. Even at the most intensive stocking pressure, only 66% of the herbage available to ground level was utilized in grazings after July.Intake results suggested that sheep of 45 kg liveweight required 1000–1200 g digestible organic matter per day to maintain body weight. Despite the higher in vitro digestibility of herbage on offer at the higher stocking rates, intake was limited through lack of herbage; a high degree of correlation existed between herbage availability and herbage intake over the four stocking rates and at all grazings.It is concluded that the portable corral technique is well suited for grazing studies and the assessment of sward response to varying stocking rates and is particularly useful where facilities for more extensive studies are limited.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1972.tb00702.x
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  • 89
    Digitale Medien
    Digitale Medien
    A NOTE ON THE ZERO-GRAZING OF BEEF CATTLE (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 27 (1972), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Groups of 8 steers weighing 300–400 kg (660–880 Ib) were rotationally grazed on a ryegrass-dominant pasture for 115 days. The systems compared were zero grazing (Z), field grazing conducted at the same stocking rate (FC), and field grazing conducted at a stocking rate varied with the intention of giving the same liveweight gain per uiimal as zero grazing (FV). Mean daily liveweight gains were: Z, 0.98; FC, 0.78; FV, 0.90 kg/animal (2.2, 1.7 and 20 Ib/animal), and liveweight gains/unit area were in the ratio 100:78:85. Organic-matter intake, measured on four occasions, was, on average, Z, 6.54; FC, 6.18; FV, 687 kg/head daily (14.4, 13.6 and 15.1Ib).From these results it appears that a comparison of zero grazing and field grazing made at the same stocking rate is likely to underestimate the potential of field grazing for beef production from grass.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1972.tb00705.x
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  • 90
    Digitale Medien
    Digitale Medien
    THE EFFECT OF NITROGEN AND STOCKING RATE ON THE OUTPUT OF PASTURE GRAZED BY BEEF CATTLE (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 27 (1972), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: An experiment was conducted in two successire years to measure the effect of two levels of fertilizer N, 50 and 300 kg/ha (45 and 270 Ib/ac) on the productivity of pastures grazed by young beef cattle. Two stocking rates were imposed at the lower N level and 4 at the higher level. The responses per kg fertilizer N were approximately 1 kg liveweight gain, 20–24 Meal ME and 8–9 kg DM. Maximal yields of about 1000 kg gain/ha (890 Ib/ac) and 19,000 Meal ME/ha (7700 Mcal ME/acre) were recorded.Animal performance was similar on the low and the high N pastures. There was evidence that the chemical quality of pasture was lower on the low N pasture in the first year, but there was no difference in the second year.The numbers of dung pats per ha and the refusal of herbage due to fouling were reduced by Increasing the stocking rate.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1972.tb00707.x
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  • 91
    Digitale Medien
    Digitale Medien
    PRODUCING GRASS FOR SUMMER MILK (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 27 (1972), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Ways of using nitrogen fertilizer and long growth periods to produce grass for summer milk production are described. To exploit the extra production obtained from long growth periods it is suggested that the grazing system should be flexible, integrating cutting with grazing.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1972.tb00692.x
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  • 92
    Digitale Medien
    Digitale Medien
    REPEATABILITY OF A TWO-STAGE IN VITRO SYSTEM OF DIGESTIBILITY MEASUREMENT (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 27 (1972), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Five substrates (high-quality brome grass, low-quality brome grass, lucerne pellets, lucerne cubes, and barley straw) were analyzed for DM disappearance in a two-stage in vitro system in nine consecutive runs. Samples for each run were inoculated in duplicate with four independent collections of rumen fluid from the same mature, non-lactating Holstein cow. Data repeatability was excellent for the two lucerne substrates, good for high-quality brome grass, and poor for low-quality brome grass and barley straw.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1972.tb00695.x
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  • 93
    Digitale Medien
    Digitale Medien
    EFFECT OF DAY-NIGHT TEMPERATURE REGIMES ON GROWTH AND MORPHOLOGICAL DEVELOPMENT OF TIMOTHY PLANTS DERIVED FROM WINTER AND SUMMER TILLERS (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 27 (1972), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Winter (vernalized) and summer (non-vernalized) timothy tillers were grown to anthesis in day/night temperature regimes of 32/26°, 27/21°, 21/15°, and 15/10°C. Herbage and total plant yields, total leaf-blade number and area, and total plant growth-rate were highest, or very nearly so, in the 21/15°C regime for both the winter and summer plants. However, summer plants reached anthesis 13 to 14 days later than winter plants in each temperature regime. Even though virtually all primary shoots produced an infiorescence, summer plants had significantiy more leaves and leaf-blade area, produced significantiy higher yields of leaf blade, stem plus sheath, stubble, and root tissues and had a significantly higher total plant growth rate than winter plants in each temperature regime.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1972.tb00694.x
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  • 94
    Digitale Medien
    Digitale Medien
    STUDIES OF RESPONSE TO FERTILIZER NITROGEN (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 27 (1972), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Fifteen out of 36 possible combinations of 3 cutting dates for hay, 3 rates of N application and 4 intervals between N application and cutting date were compared to study the effects of pre-harvest application of N on the N, P, K, Mg and Ca contents of the aftermath and the effectiveness of utilization of these elements.According to the method of calculation given by ARC (1), the control haycrop harvested on 16 June was deficient in N, Ca, P and Mg, and the aftermath which was given no further N after harvest was of low bulk, but adequate in mineral content. Earlier harvesting improved the quality of the hay, and increased the bulk and reduced the mineral content of the aftermaths. Applying 125.6 kg N/ha after harvest resulted in a satisfactory increase in bulk, plus an improved mineral content in the aftermath. Applying N before harvest resulted in increased uptake of N, K, Ca, P and Mg in the hay and in the increased percentage of N, K, and Ca in the DM of the hay. Very early application of pre-harvest N increased the percentage of Mg.The general effect of pre-harvest N on the aftermath was to reduce yield and uptake of N, K, Ca, P and Mg. Doubling the pre-harvest N raised the mineral uptake. Very early pre-harvest application resulted in low mineral uptake in the aftermath. The percentage of N, K and P in the aftermath was reduced by pre-harvest N applied at both levels and on both dates.Deferring the application of fertilizer N until 4 days after harvesting the hay crop produced the highest mineral contents in the aftermath, without reducing its bulk.Mineral uptake in the regrowths was linearly related to N uptake at 1.43 kg K, 0.34 kg Ca, 0.157 kg P, 0.006 kg Mg/kg N uptake.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1972.tb00697.x
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  • 95
    Digitale Medien
    Digitale Medien
    LAND RESTORATION WITH PULVERIZED FUEL ASH (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 27 (1972), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: This paper describes experiments carried out with different depths of topsoil and methods of cultivation on an ash lagoon at Besthorpe, near Newark. Good yields of grass were obtained even on bare ash with suitable rates of fertilizer application. In the conditions existing at Besthorpe, the optimum depth of soil appeared to be three in. (7.62 cm), but the depth of cultivation (three in. (7.62 cm) or twelve in. (30.48 cm), die latter resulting in mixtures of soil and ash, had no significant effect.B uptake by the growing plants was markedly lower in the third year of the experiment but, apart from its possible effect on yield, it produced no ill effects.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1972.tb00679.x
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  • 96
    Digitale Medien
    Digitale Medien
    THE EFFECT OF METHOD OF DETERMINATION OF ACID-DETERGENT FIBRE ON ITS RELATIONSHIP WITH THE DIGESTIBILITY OF GRASSES (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 27 (1972), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: The acid-detergent fibre (ADF) contents of 50 grass samples of known in vivo and in vitro digestibility were determined by hydrolysing with acid for 1, 2, 3,4, 5, and 6 h. The 50 samples used consisted of 6 Lolium perenne, 9 Cenchrus ciliaris, 15 Chloris gayana, 10 Digitaria spp., and 10 Setaria spp. Regression and residual standard deviations (RSD) were calculated for each hydrolysis time for each grass and for all 50 samples.Increasing the hydrolysis time decreased the RSD for Lolium perenne and Setaria, had no effect on Chloris gayana and Digitaria and increased the RSD for Cenchrus ciliaris regressions. For regressions based on all 50 samples die RSD varied between ±4.8 and 5.0 digestibility units with only minor differences between hydrolysis times. Correcting the ADF for contaminating ash generally increased the RSD.Changing the acid strength from the 10 N recommended by van Soest (8) did not lead to any major improvement in the RSD for regressions based on Cenchrus ciliaris, but with Setaria the RSD was reduced from ±2.8 to 1.7 digestibility units when 2N acid was used and hydrolysis was extended to 2 h.It was concluded that unless the optimum conditions for determining ADF for each grass are known then the in vitro technique provides digestibility estimates with a lower error.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1972.tb00681.x
    Standort Signatur Erwartet Verfügbarkeit
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  • 97
    Digitale Medien
    Digitale Medien
    THE VISUAL ESTIMATION OF PASTURE AVAILABILITY USING STANDARD PASTURE CORES (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 27 (1972), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: A coring technique (6), that may be used for estimating the mean amount of herbage on closely grazed pastures, has been adapted to include visual scoring. Two methods are described, both of which use sets of pasture cores from the sward as reference standards. The observers score the herbage on view at random sites against the standards. In the first method the scores are converted to herbage yields directly by reference to the yields of the standards. In the second method a double sampling regression technique is used and the set of standards is used as a visual guide only.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1972.tb00682.x
    Standort Signatur Erwartet Verfügbarkeit
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  • 98
    Digitale Medien
    Digitale Medien
    THE CATTLE DUNG PATCH (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 27 (1972), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Soil samples were taken at 0–1 in. (0–2.54 cm) and 1–3 in. (2.54–7.62 cm) depths on five occasions over a period of 55 days from under (3 in. (7.62 cm) radius from centre) and around (9 in. (22.86 cm), 12 in. (30.48cm) and 18 in. (45.72 cm) radius from centre) dung patches deposited on pasture. The samples were analysed for available N, K and P. There was a significant increase in the level of all three elements in the 0–1 in. samples beneath the dung patch. The increase persisted throughout the experiment. K exhibited the greatest increase, but was not detected beyond the edge of the dung patch. The increase in soil N was smaller but was detected up to 6 in. (15.24 cm) from the edge of the dung patch. P also increased, but was more variable than either N or K. Soil N, P and K did not increase in the 1–3 in. samples.The weight and fibre content of the dung patch was also measured throughout the experiment. After high initial losses (25%) the dung patch decayed only slowly.The loss of ammonia from dung patches was followed over 13 days in a separate experiment During the relatively hot weather over this period approximately 5 % of the N iu the dung was lost as ammonia, mainly in the first five days. During the experimental period of 13 days 60% of the original weight of the dung patch was lost through evaporation.The results are discussed in relation to the growth of herbage surrounding a dung patch reported in the previous paper (12).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1972.tb00684.x
    Standort Signatur Erwartet Verfügbarkeit
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  • 99
    Digitale Medien
    Digitale Medien
    CONVERSION TABLES FOR BRITISH AND METRIC WEIGHTS AND MEASURES (1972)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 27 (1972), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1972.tb00688.x
    Standort Signatur Erwartet Verfügbarkeit
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  • 100
    Digitale Medien
    Digitale Medien
    COMPETITION BETWEEN ESTABLISHED AND NEWLY SOWN GRASS SPECIES (1971)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 26 (1971), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: The nature of competition between a grass species either invading or introduced hy sowing into an established grass sward and the estahlished sward was examined by using a divided-pot tecbnique. The species studied were Lolium perenrte S23 and Festuca rubra SS9, grown at two levels of N and P. Data are given for DM yield, tiller number, species ratio and uptake of N and P.The results show that competition for nutrients was a dominant factor and anything which affected this, such as prior establishment of one species, had an important effect on the success of the introduced species which amounted, under some conditions, to complete inhibition of growth of the latter. The data throw some light on the means whereby dominance is maintained in a pasture community.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1971.tb00668.x
    Standort Signatur Erwartet Verfügbarkeit
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