Effects of seed phosphorus concentration on the emergence and growth of subterranean clover (Trifolium subterraneum)

C. J. Thomson, T. P. Bolger

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Subterranean clover seed (Trifolium subterraneum cv. Dalkeith) with phosphorus concentrations of 0.75% (high P seed) and 0.48% (low P seed) and of uniform size (2.0-2.4 mm diameter) was used to measure the effect of seed P concentrations on seedling emergence and growth. Seedling emergence numbers were 35% greater for the high P seed, and this effect was independent of external P supply. High P seed also emerged more quickly than low P seed. Leaf emergence was faster and shoot dry weight was greater for seedlings grown from high compared with low P seed, but only when external P supply was deficient for plant growth. Phosphorus concentrations in the shoots of two-week old seedlings were 32-51% higher for high P seed, although by four weeks plants grown from high and low P seed had similar concentrations of P in their shoots. We suggest that establishing pastures using high P seed would improve both early and late season pasture production.

Original languageEnglish
Pages (from-to)285-288
Number of pages4
JournalPlant and Soil
Volume155-156
Issue number1
DOIs
Publication statusPublished - 1 Oct 1993
Externally publishedYes

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