Vol. 5 No. 2
Propargite residues in okra and brinjal fruits.
Author(s): H. BANERJEE, A. GHOSH CHOWDHURY, D. BANERJEE, M. PARAMASIVAM, T. BANERJEE AND S. ROY
Abstract: A supervised field trial was carried out to examine the persistence and dissipation behaviour of propargite (Omite 57 % EC) in okra and brinjal following two spray application @ 570 (T1) and 1140 (T2) g. ai/ha. Propargite residue was estimated by HPLC. The LOD and LOQ were found to be 0.03 mg/kg and 0.1 mg/kg respectively for both the substrates. Initial deposits of propargite ranged from 2.95-5.68 mg/kg in okra and 2.20-4.30 mg/kg in brinjal at T1 and T2 dosages respectively. The dissipation followed first order reaction kinetics with half-life of 2.38-3.04 days for okra and 5.63-7.06 days for brinjal. The calculated PHI of propargite ranged from 1.08 -3.40 for okra and 1.0 -7.63 days for brinjal. The residues reached below MRL of 2 mg/kg at 1 days for both the crop.
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