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The effect of pesticide application on the establishment of white clover in a newly‐sown ryegrass/white clover sward
Author(s) -
MOWAT D. J.,
SHAKEEL M. A.
Publication year - 1988
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.1365-2494.1988.tb01892.x
Subject(s) - agronomy , biology , sowing , perennial plant , chlorpyrifos , dry matter , lolium perenne , cultivar , pesticide
In plots of perennial ryegrass and white clover, regular treatment with chlorpyrifos and methiocarb more than trebled the clover content of the sward, compared with untreated plots, in just over 2 years from sowing. Chlorpyrifos alone accounted for most of the effect, which was attributed mainly to the control of Sitona lepidus. Combined treatment increased total herbage dry matter yield by 4·24 t ha −1 during this period but had little effect on grass‐only plots. Methiocarb appeared to have contributed by assisting earlier establishment of clover, but otherwise had little effect until slugs, which were initially uncommon, became more abundant in the later stages of the experiment. The effect of slug control was most noticeable in a cultivar of low cyanogenic potential. This factor did not influence the effect of chlorpyrifos.