Yield and nitrogen utilization by Lolium perenne and Trifolium repens on a limed stagnohumic‐gley soil in a pot experiment

D. W. HOPKINS*, R. S. SHIEL, A. G. O'DONNELL

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)107-112
Number of pages6
JournalGrass and Forage Science
Volume45
Issue number1
DOIs
Publication statusPrint publication - Mar 1990
Externally publishedYes

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