Persistence and movement of monocrotophos residues from skin to pulp of mango fruits.
Sachan A. S., Singh G.
Author Affiliation: Department of Entomology, G.B. Pant University of Agriculture & Technology, Pantnagar, Uttar Pradesh, India.
Indian Journal of Plant Protection 17 : 205-211
Abstract : In studies in Uttar Pradesh, India, in 1985-86, monocrotophos applied at 0.05, 0.075 and 0.1% for the control of mango pests gave average initial deposits of 7.70-7.98, 11.90-12.05 and 13.60-14.07 p.p.m., resp., on the skin of unripe mango fruits; detectable residues of the compound persisted for 10.15 days, half-life values ranged from 2.9 to 4.0 days and the waiting period for safe consumption of the skin was 9.1-15.1 days. On ripe fruits, average initial deposits ranged from 7.5 to 14.6 p.p.m., half-life values ranged from 4 to 5 days and the waiting period from 12.5 to 16 days. The amount of insecticide migrating from the skin to the pulp remained below the tolerance limit in both unripe and ripe fruits.