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Weed control with pre‐sowing herbicides in irrigated cotton ( Gossypium barbadense L.) and groundnut ( Arachis hypogaea L.) in the Sudan. II. Economic, labour requirement, crop safety and operational aspects of trifluralin and benfluralin
Author(s) -
JENNINGS E. A.,
DRENNAN D.S.H.
Publication year - 1979
Publication title -
weed research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 74
eISSN - 1365-3180
pISSN - 0043-1737
DOI - 10.1111/j.1365-3180.1979.tb01542.x
Subject(s) - trifluralin , sowing , arachis hypogaea , agronomy , weed control , crop , gossypium barbadense , seedbed , fiber crop , biology , malvaceae , gossypium hirsutum
Summary: Soil incorporated. pre‐sowing application of trifiuralin in cotton or of benfluralin in gruundnut, each at 1–68 kg a.i., ha, cut labour requirement for handweeding to levels where the tenant could he largely independent of hired labour, Economic returns from a combination of these herbicides plus supportive hand‐ weeding for herbicide‐resistant species compared favourably with those from hand‐ weeding only as presently recommended. Application and incorporation of trifluralin and benfluralin fited well into existing practices for seedbed preparation and any likely modifications of these. There was no evidence of crop phytoxicity and crop maturity was not affected. Residue analysis indicated no soil residue problems for crops in rotations and no residues were detected in crop seed. Trifluralin applied many months in advance of cotton planting in the dry season, did not start to disappear until the soils were wetted just before couon planting.