Esfenvalerate Residue Accumulation on Peanuts, Cocoa Beans, and Tobacco during a Simulated Storage Season²

Farmers stock peanuts, bagged cocoa beans, exposed tobacco, and boxed tobacco were exposed to daily applications of 0.02 g AI esfenvalerate per 28.3 m³ (1,000 ft³) for 235 consecutive days. Residue accumulation on peanut shells and peanut kernels ranged from 0.2 - 22.9 ppm and 13.1 - 189.6 ppb, respectively. The bag containing the cocoa beans apparently trapped most of the insecticide residue, and residues on whole beans and roasted nibs ranged from 10.4 - 452.2 and 9.6 - 118.5 ppb, respectively. Residue accumulation on exposed tobacco ranged from 0.2 - 31.1 ppm, but residues on boxed tobacco were above minimum detectable levels on only 2 of 11 sample dates.