Effects of phosphorus application on grass and grass/clover swards

An experiment on a young marine clay soil was started in which the effects of P application on pure perennial ryegrass swards and on mixed swards are studied. In January 1994 the trial site was ploughed to a depth of 24 cm and plots were seeded in April with either grass or grass/clover. At the star...

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Bibliographic Details
Main Authors Schils, R. L. M, Snijders, P. J. M. (Research Station for Cattle, Lelystad (Netherlands). Sheep and Horse Husbandry)
Format Conference Proceeding
LanguageEnglish
Published Tartu (Estonia) Estonian Agricultural University Publishers 1995
Subjects
ABONOS FOSFATADOS
ABONOS NITROGENADOS
ENGRAIS AZOTE
ENGRAIS PHOSPHATE
GRAMINEAS
GRAMINEE
PAISES BAJOS
PASTIZAL MIXTO
PAYS BAS
PRAIRIE MIXTE
TRIFOLIUM REPENS
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Summary:An experiment on a young marine clay soil was started in which the effects of P application on pure perennial ryegrass swards and on mixed swards are studied. In January 1994 the trial site was ploughed to a depth of 24 cm and plots were seeded in April with either grass or grass/clover. At the start of the trial soil available P was very low. Grass-only and grass/clover swards were combined with three and two levels of fertilizer N, respectively. These treatments were then combined with four P fertilizer rates. The results in this establishment year showed a modest positive effect of P application on grass and white clover DM yields. On grass-only plots a consistent interaction existed between N and P application rate when considering P offtake, P content and DM yield. In contrast, grass/clover plots receiving fertilizer N showed a poorer response to P than those receiving no N. Results in the following years will show whether the above effects are consistent or not
Bibliography:9600099
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