Migration of carbaryl residues from skin to pulp of mango fruits.
Sachan A. S.
Author Affiliation: Department of Entomology, G.B. Pant University of Agri. & Tech., Pantnagar, Nainital (U.P.), India.
Indian Journal of Entomology 56 : 260-269
Abstract : Carbaryl sprayed at 0.05, 0.1 and 0.2% on to mango trees in Uttar Pradesh, India, with a tractor-mounted hydraulic sprayer resulted into average deposits of 28.663-31.285, 52.629-53.580 and 70.886-71.590 p.p.m. on the skin of unripe fruits and 29.954-30.305, 56.415-58.595 and 68.985-71.985 p.p.m. on the skin of ripe fruits, resp. The detectable residues of carbaryl were found to persist for 8-10 days and fell below a detectable level in 10-12 days. The half-life values varied from 1.68 to 1.94 and from 1.63 to 1.82 days and the waiting period for safe consumption of skin varied from 4.88 to 7.02 and 4.18 to 6.77 days for unripe and ripe fruits, resp. Migratory residues recorded in both unripe and ripe mango fruits were well below the tolerance limit.