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  • Blackwell Publishing Ltd  (28,447)
  • 1985-1989  (28,447)
  • 1
    Electronic Resource
    Electronic Resource
    A method to measure the susceptibility of pasture soils to poaching by cattle (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Soil use and management 1 (1985), S. 0 
    Details
    ISSN: 1475-2743
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. A new method of measuring susceptibility to poaching is described, based on the concept that poaching is caused by a progressive loss of soil strength during repeated treading in wet weather. Susceptibility was measured by the rate of loss of strength in response to concurrent treading and irrigation at standard rates. The pressures exerted on the ground by a walking dairy cow were simulated by a purpose-built penetrometer, whilst water was applied via a network of plastic pipes fitted with syringe needles. Measurements were performed on four pasture soils having a range of clay contents and compared in relation to a mechanism proposed for the process. The results show susceptibility to be a property not wholly determined by the clay content of the soil, but suggest that it is influenced by bulk density and the strength of the sward, which will van, according to weather and pasture management.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-2743.1985.tb00976.x
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  • 2
    Electronic Resource
    Electronic Resource
    Urea for topdressing winter cereals: an interim report (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Soil use and management 1 (1985), S. 0 
    Details
    ISSN: 1475-2743
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-2743.1985.tb00663.x
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  • 3
    Electronic Resource
    Electronic Resource
    The nitrate issue—a review (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Soil use and management 1 (1985), S. 0 
    Details
    ISSN: 1475-2743
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: IT IS now almost two years since the Royal Society published its authoritative study group report, The Nitrogen Cycle of the UK, the first comprehensive account of the nitrate issue. For the first time a complete picture was revealed of the nitrogen cycle in the UK and the Study Group was able to make a wide-ranging series of recommendations for future research.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-2743.1985.tb00667.x
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  • 4
    Electronic Resource
    Electronic Resource
    Soil degradation and management under intensive sugarcane cultivation in North Queensland (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Soil use and management 1 (1985), S. 0 
    Details
    ISSN: 1475-2743
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. Sugarcane yields in the Herbert Valley in North Queensland have been declining over the past 15 years. Better yields are obtained where crops are grown on previously unused land. Soils under cane are more compacted, more acid, contain less organic matter and are lower in cation exchange capacity and exchangeable cations. These differences reflect soil degradation caused by intensive cultivation.Contributing factors to the degradation of soils include soil compaction and structural breakdown occurring during harvest and cultivation operations, losses of organic matter due to burning of crop residues and acidification of soils due to large applications of nitrogen fertilizers.Soil management practices should aim to increase soil organic matter levels, provide a more favourable biological environment, reduce physical damage to soils during harvesting and cultivation, reduce soil acidity and improve the effectiveness of fertilizing practices.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-2743.1985.tb00972.x
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  • 5
    Electronic Resource
    Electronic Resource
    Assessment of soil erosion risk in England and Wales (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Soil use and management 1 (1985), S. 0 
    Details
    ISSN: 1475-2743
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. Information on rainfall erosivity, soil erodibility and land capability is combined to produce a map of England and Wales showing areas with a risk of soil erosion at rates above the soil loss tolerance level. About 20 500 km2 or 37% of the arable area is at risk. Given the shallow soils and current rates of erosion, sustained use of this area for cereal, sugar beet and vegetable production beyond the first quarter of the next century is threatened. A further 4000 km2 is at risk in non-arable areas, mainly associated with blanket peat in the uplands and with coastal sand dunes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-2743.1985.tb00974.x
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  • 6
    Electronic Resource
    Electronic Resource
    Review of information on lime loss and changes in soil pH gained from ADAS experiments (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Soil use and management 1 (1985), S. 0 
    Details
    ISSN: 1475-2743
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. Data on lime loss and soil acidification obtained from a range of ADAS experiments are reviewed. The trials, which include drainage and lysimeter studies and long-term liming, manuring and soil management experiments, indicate a wide range of annual lime losses, with maximum rates in excess of 1000 kg ha−1 CaCO3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-2743.1985.tb00645.x
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  • 7
    Electronic Resource
    Electronic Resource
    Recent trends in lime use and soil pH in England and Wales (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Soil use and management 1 (1985), S. 0 
    Details
    ISSN: 1475-2743
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. Survey information on the use of lime in England and Wales between 1974 and 1983 shows year-to-year fluctutions but no marked trend. Areas limed per year are compared for different types of region and cropping, and estimates given of the percentages of agricultural soils by pH according to rotation type. There was no general change in soil acidity between 1969–73 and 1974–78 but recent data show some reductions in grassland pH.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-2743.1985.tb00646.x
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  • 8
    Electronic Resource
    Electronic Resource
    The acidity of Welsh soils (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Soil use and management 1 (1985), S. 0 
    Details
    ISSN: 1475-2743
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. The pH of soil surface horizons in Wales ranges from 3.5 to 7.5 and is significantly higher on agricultural land than under either rough grazing, unenclosed grassland or woodland. Sufficient information exists to map broad classes of soil pH. Rough grazing and woodland sites are concentrated on soil types which are naturally very acid. In Wales, such soils are found on the main mountain ranges and show up clearly on the map of pH. Their acidity is the result of an interrelationship between soil, climate and vegetation. However, afforestation, particularly with coniferous species, appears to lower the pH of the underlying soil. There is a trend in agricultural soils towards lower pH under a moister climate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-2743.1985.tb00647.x
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  • 9
    Electronic Resource
    Electronic Resource
    The possible role of forests in streamwater acidification (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Soil use and management 1 (1985), S. 0 
    Details
    ISSN: 1475-2743
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-2743.1985.tb00649.x
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  • 10
    Electronic Resource
    Electronic Resource
    Causes of soil acidification: a summary (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Soil use and management 1 (1985), S. 0 
    Details
    ISSN: 1475-2743
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. A review of recent data shows that (i) dissolved CO2 has its greatest acidifying effect in soils with pH values above about 6.5, (ii) fertilizers containing NH−1+ ions or urea will acidify soil whether the ions are taken up directly by plants or are first nitrified, (iii) oxidation of nitrogen and sulphur in soil organic matter causes acidification especially after deforestation, and (iv) the acidifying effect of rainfall and dry deposition is due to sulphuric and nitric acids, SO2 and NH−1+ ions. A table is given showing the order of magnitude of each source of acidification.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-2743.1985.tb00651.x
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