Comparison of the Variability in the Levels of Pesticide Residue Observed in Japanese Cabbage and Grape Units

Abstract

To estimate variations in pesticide residue levels in crops, the variability factors (VFs, the 97.5th percentile of the residue levels in the sample divided by the average residue levels in the lot) in residue levels of acetamiprid and cypermethrin applied to cabbage and grapes were investigated, respectively. The VFs in the residue levels of both pesticides in cabbage (2.00 and 2.39, respectively) were clearly higher than those in grapes (1.82 and 1.63, respectively). Although the residue levels of both pesticides in grapes showed a normal distribution, those values in cabbage were slightly skewed at lower residue levels. Individual residue levels in grapes had a good agreement between acetamiprid and cypermethrin. In contrast, the distribution of cypermethrin residue levels in cabbage was slightly skewed at higher residue levels as compared to that of acetamiprid. These results indicate that the difference in the relative distribution of the two pesticides between cabbage and grapes might be due to the influence of various factors such as differences in crop species, plant cultivation methods, and physicochemical properties of the pesticides.

Effects of separate analyses of pulp and peel on pesticide residues in watermelons and muskmelons

“…It is well known that the neonicotinoid insecticides, including acetamiprid, have penetration and translocation abilities. 10,11) However, the pesticide residue levels in the pulp portions in this study were less than 0.04 mg/kg of acetamiprid in the watermelon from the Ibaraki field.…”

Comparison of pesticide residue levels in headed lettuce growing in open fields and greenhouses

“…In contrast, the majority of sprayed pesticides were present on the surface of outer leaves, especially in wrapped leafy vegetables such as lettuce heads and cabbage. 7,17) The assumption just described is supported by our previous study, 8) in which the Starcle ® water-dispersible granules of dinotefuran were applied to Chinese cabbage using sprayers, and the variations in residue levels of dinotefuran in size-reduced Chinese cabbage were at the same level as the other pesticides.…”

“…The first study estimated variations in pesticide residue levels in crops 7) ; the individual residue levels in grapes grown in a greenhouse had a good agreement between acetamiprid and cypermethrin. In contrast, the distribution of cypermethrin residue levels in cabbage grown in an open field was slightly skewed at higher residue levels as compared to that of acetamiprid.…”

Variability of pesticide residues in eggplant units collected from a field trial and marketplaces in Greece

“…There are no previously published data on the unit‐to‐unit residue variability in eggplant, but the VF values obtained agree with those reported for other commodity crops. As for cypermethrin, Fujita et al . obtained in cabbage a VF value of 2.39 and Ambrus that of 2.39 in lettuce.…”