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  • 1
    Electronic Resource
    Electronic Resource
    Grass production studies in the uplands of north-east Scotland 2. The effects of fertilizer treatment (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 35 (1980), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The effects of fertilizer treatment were studied over two seasons on a 2 × 2 factorial arrangement of altitude and major soil group. The soil groups were brown earths and podzols and the altitudinal zones were 260–320 m and 380–440 m. Major responses were found to N only and these were generally linear in terms of overall dry matter yield up to the highest treatment level of 176 kg ha-1. Productivity on brown earths was significantly higher than on podzols and differences between soil groups were not removed by increasing fertilizer input. In most instances 88–132 kg ha-1 N would have to be added to podzols to achieve the same yields as on brown earths with no N input. Apparent fertilizer recoveries and responses per unit of fertilizer input did not, however, differ markedly between soil groups. Overall yields were comparable with those from lowland situations at similar levels of N input, but the growing season was short and 60–80% of production was obtained by early July.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1980.tb01513.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Grass production studies in the uplands of north-east Scotland 1. The effects of soil parent material, altitude and soil major group (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 35 (1980), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Sites were established on good quality grass swards in areas representative of three of the most extensive soil parent materials in north-east Scotland and covering an altitudinal range of 260–460 m. Overall yields of herbage dry matter in 1975 were high, ranging from 6280 kg ha-1 with no fertilizer to 9190 kg ha-1 with an application of 100, 26 and 50 kg ha-1 N, P and K respectively. Differences in production between parent material and altitude groupings were found to be associated with differences in major soils group and past land use, with long-enclosed brown earths outyielding podzols recently reclaimed from heather moorland by about 30% overall. Increasing inputs of fertilizer appeared to reduce the effects of soil and climatic conditions. Brown earths showed higher apparent recoveries of N fertilizer than did podzols.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1980.tb01500.x
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    Paper (German National Licenses)
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  • 3
    facet.materialart.
    Unknown
    Relationships between soil moisture-holding properties and soil texture, organic matter content, and bulk density (1981)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Specimens from the surface horizon and the subsoil of 62 soil horizons in Hedmark and Oppland were investigated to study how the mechanical composition of the soil, the organic matter content and the bulk density affect their porosity and air capacity and their total and available water content. Most of the specimens belonged to the loam group, and a smaller number was from sandy and silty types of soil. Equations were established to make it possible to calculate the water retention curves and the amount of available water from the above mentioned parameters. As a rule, errors derived from the equations are no greater than those which are found in similar research in other countries.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-TM-76674
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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