Insecticide Usage Patterns on Curry Leaf

Abstract

Curry leaf [Murraya koeinigii (L.) Sprengel] exported from India contains insecticide residues above maximum residue limits, which can be hazardous to consumer health and cause rejection of the commodity at point of entry. It is important to study current insecticide usage patterns in major curry leaf growing areas. Farmers were surveyed regarding insecticide use on curry leaf. It is necessary to use larger quantities of insecticides causing greater than legal levels of residues on the products. About 98% of farmers use insecticides to control psyllids, followed by ber leaf roller Psorosticha zizyphi Stainton. Major insecticides used are Polytrin C (cypermethrin 4% + profenofos 40%), followed by Exodus and Monocrotophos. Around 50% of farmers use 30 mL per tank of insecticides. About 62% of farmers used insecticides at 10-day intervals. Only 16% of farmers had knowledge on natural enemies, use of plant products, and fungal bioagents. About 84% of farmers get plant protection advice from pesticide dealers. Extension educational interventions are necessary to produce fresh curry leaf free from insecticide residues.

Keywords:

• Murraya koeinigii
• Ber leaf roller
• Curry leaf
• Polytrin C
• Psyllids
• Tetranychid mite