Residual study of a synthetic parathyroid on okra

Abstract

Okra is an annual green vegetable crop cultivated in various parts of India and popularly known as bhendi. Residue of fenvalerate 20 EC was analyzed by GLC. Total recovery of fenvalerate was observed to be 89%, 98% and 99% at 0.1, 0.5 and 1.0 mg/kg fortified fruit samples respectively. Dissipation was faster on both fruits and leaves at double dose (0.150) as compared to normal dose (0.075). Peak I was found to dissipate faster on fruit as compared to leaves. The half life ranged between 2.24 to 2.62 days on fruits and 4.11 to 5.52 days on leaves. Application of fenvelarate 20 EC is found to be safe on okra crop for pest management because MRL of the insecticide was found to be higher than the deposit of pesticide on fruits.