Dissipation behaviour and risk assessment of profenofos and triazophos in capsicum under sub-temperate conditions

VINAY SINGH; R S CHANDEL; I D SHARMA

doi:10.56093/ijas.v86i9.61509

Authors

VINAY SINGH CSK HPKV, Palampur (Himachal Pradesh)
R S CHANDEL RHRTS and KVK, Sharbo, Kinnaur, HP
I D SHARMA University of Horticulture and Forestry, Nauni, Solan, HP

https://doi.org/10.56093/ijas.v86i9.61509

Keywords:

Bell pepper, Culinary processes, Insecticides, Persistence, Risk assessment

Abstract

This study documents the residual persistence of profenofos and triazophos on capsicum fruits. The persistence was observed on 0, 1, 3, 5, 7, 10, 15 and 20 days of insecticides spray and analyzed using QuEChERS technique and estimated with Gas Chromatograph equipped with Flame Photometric Detector. The analysis revealed the presence of profenofos with less initial deposits of 1.403 mg/kg compared to 1.870 mg/kg of triazophos which further reduced to below detectable level (BDL) on 15^th and 10^th day with residual half-lives of 2.0 and 1.5 days, respectively. The different household processing (s) from washing to cooking gave residual relief up to 73.77%. The soil analysis revealed initial deposits of 0.913 and 0.816 mg/kg, for respective insecticides, which disappeared to BDL on 10^th day. The waiting periods worked out at the limit of quantification (0.05 mg/kg) were 10 and 8 days, for profenofos and triazophos, respectively.

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