Uptake of Emamectin Benzoate Residues from Soil by Rotational Crops

J. Agric. Food Chem. 1996, 44, 4015−4021

4015

Uptake of Emamectin Benzoate Residues from Soil by Rotational Crops Amechi C. Chukwudebe,*,† William F. Feely,† Thomas J. Burnett,‡ Louis S. Crouch,† and Peter G. Wislocki† Department of Drug Metabolism, Merck Research Laboratories, P.O. Box 450, Hillsborough Road, Three Bridges, New Jersey 08887, and ABC Laboratories, Pan Ag Division, 32380 Avenue 10, Madera, California 93638

Radiocombustion analyses of barley, carrots, and lettuce planted in 30, 120, 141, and 365-DAT plots after applications of the test compound [14C]4′′-deoxy-4′′-epi-methylaminoavermectin B1a ([14C]MAB1a; 0.1008 kg ai ha-1) demonstrated that total residues in edible lettuce and carrots were below the limits of quantitation (LOQ;