Dissipation of quinalphos (O, O, diethyl O‐quinaxalin‐2yl phosphorothioate) residues in and/or on cauliflower(Brassica oleracea Var. Botrytis)
作者:
Alamelu Gupta,
N. S. Parihar,
期刊:
Tropical Pest Management
(Taylor Available online 1989)
卷期:
Volume 35,
issue 1
页码: 105-106
ISSN:0143-6147
年代: 1989
DOI:10.1080/09670878909371330
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A field trial was conducted to study the magnitude of quinalphos residues in and/or cauliflower(Brassica oleracea Var Botrytis.The cauliflower crop was sprayed once with quinalphos 25 e.c. at 0.25 and 0.5 kg a.i./ha 104 days after transplanting. The samples of cauliflower drawn at different time intervals were analysed colorimetrically. The initial deposits of quinalphos on cauliflower were found to be 5.79 and 9.52 ppm, an the half life values 1.61 and 2.12 days, respectively, at 0.25 and 0.5 kg a.i./ha. The waiting periods determined were 11 days at the higher and 7 days at the lower dose of quinalphos.
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