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Effect of different soil and nitrogen fertilizer conditions on 32 P‐labelled phosphate uptake by two grass species
Author(s) -
HUGHES D. M.,
GOODMAN P. J.
Publication year - 1976
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1976.tb00607.x
Subject(s) - phosphate , peat , nitrogen , sorption , agronomy , biology , fertilizer , soil water , phosphate fertilizer , zoology , chemistry , ecology , biochemistry , adsorption , organic chemistry
SUMMARY In two years of trials, roots of ryegrass took up more 32 P‐labelled phosphate than roots of fescue. Application of 672 kg N ha ‐1 increased phosphate absorption compared with application of 112 kg N ha ‐1 . Roots in mineral soil absorbed more phosphate than those in peat soil. In both soils uptake decreased as depth of phosphate injection increased from 5 to 30 cm. An interaction occurred whereby roots in the intermediate depth (10–22‐5 cm) in peat absorbed less phosphate than in mineral soil and this was apparently unrelated to the exchange or sorption properties of the soil.