Full TGIF Record # 13404
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Web URL(s):http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.1988.tb02151.x/epdf
    Last checked: 10/02/2015
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Publication Type:
i
Refereed
Author(s):Rangeley, Anne
Author Affiliation:Hill Farming Research Organisation, Edinburgh, UK
Title:Fertilizer Requirements for Maintenance of a Perennial Ryegrass (Lolium perenne L.)/White Clover (Trifolium repens L.) Pasture Growing on a Humus Iron Podzol in N.E. Scotland
Source:Grass and Forage Science. Vol. 43, No. 3, September 1988, p. 263-272.
Publishing Information:Oxford, Blackwell Scientific Publications
Keywords:TIC Keywords: Lolium perenne; Trifolium repens; Nitrogen fertilizers; Potassium fertilizers; Uptake; Humus; Iron podzols
Abstract/Contents:"Ryegrass/white clover pastures were reseeded on heather moor in north-east Scotland in 1978/79. By 1981, despite moderate fertilizer applications, the pastures had deteriorated and dry matter (DM) production was low. After preliminary soil and herbage analysis an omission trial was carried out in 1982/83 at two sites (A and B) to identify the factors which limited production. At site A depressions in growth occurred in the absence of N, P and K. Perennial ryegrass was severely N deficient with concentrations in leaves of less than 22 g N kg-1 in spring and summer even agter application of 120 kg N ha-1 annually. Rates of Nitrogen fixation were high in spring but rapidly declined in June and July as the soil moisture tension increased. Application of N fertilizer also reduced the N2 fixation rate. Deficiencies of P and K occurred despite apparently high levels of extractable P in the soil. Uptake of these nutrients was inhibited in the dry soil during summer. White clover was more susceptible to drought than perennial ryegrass, probably because it rooted at a shallower depth. Growth at site B was limited by acidity and lack of N and K. The soil pH was 4.8 (s.d. = 0.75) at 1-5 cm depth. Application of 2.5 t lime ha-1 in spring 1982 had not altered the pH by autumn 1983. It was concluded that methods of incorporating lime into the soil, together with ways of increasing the rates of N2 fixation by white clover and transfer to grass, should be investigated further. Regular small applications of N and K may be necessary to sustain DM production at the level required by the farming system."
Language:English
References:33
Note:Figures
Tables
Geographic Terms:Scotland
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Rangeley, A. 1988. Fertilizer Requirements for Maintenance of a Perennial Ryegrass (Lolium perenne L.)/White Clover (Trifolium repens L.) Pasture Growing on a Humus Iron Podzol in N.E. Scotland. Grass Forage Sci. 43(3):p. 263-272.
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Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.1988.tb02151.x/epdf
    Last checked: 10/02/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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MSU catalog number: SB 197 .B7
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