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Yield and nitrogen utilization by Lolium perenne and Trifolium repens on a limed stagnohumic‐gley soil in a pot experiment
Author(s) -
HOPKINS D. W.,
SHIEL R. S.,
O'DONNELL A. G.
Publication year - 1990
Publication title -
grass and forage science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.716
H-Index - 56
eISSN - 1365-2494
pISSN - 0142-5242
DOI - 10.1111/j.1365-2494.1990.tb02189.x
Subject(s) - lolium perenne , trifolium repens , agronomy , repens , nitrogen , gleysol , yield (engineering) , chemistry , soil water , biology , environmental science , poaceae , soil science , materials science , metallurgy , organic chemistry
In a pot experiment the pH of a hill peaty soil was adjusted to cover the range 3.8 to 6.8 with Ca(OH) 2 . Yield and N content of the harvested plant material was greatest at pH 6.8 in pots sown with only Lolium perenne , and greatest at soil pH 6.1 in pots sown with Trifolium repens and L. perenne. T. repens established only at soil pH between 4·3 and 6·1. A small reduction in sward yield and a large and highly significant decrease in total N recovered by the harvested material, which occurred with increase in soil pH from 3·8 to 4·3, was attributed to a combination of increased N immobilization in the soil microbial biomass and to the poor performance of both sown and self‐propagating indigenous species around pH 4·3.