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DIFFERENTIAL TOLERANCE WITHIN CERTAIN CRUCIFEROUS CROPS TO VEGADEX, CIPC,
DYMID AND TREFLAN*
Ahsan A.
Vahidy
Abstract:
The selectivity of Vegadex, CIPC, Dymid and Treflan was
studied with six members of cruciferous crops, viz. head cabbage,
cauliflower, chinese cabbage, leaf mustard, mustard cabbage and radish.
In general, Vegadex and Treflan were found to be suitable herbicides
while Dymid was very toxic to the crops studied. The selectivity was not
due to a single factor but it was an interaction of morphological,
physiological and genetical factors which made a particular crop
tolerant or susceptible. It is assumed that genetical basis of
selectivity is not of primary importance though it seems to affect
secondarily.
The
differential selectivity of
leaf mustard and mustard cabbage to CIPC and Vegadex is discussed on
geneticpl basis.
Department of Genetics,
University of Karachi, Karachi
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