Investigation of Agrochemicals in Use for Cultivation of Medicinal Plants (Part 4) Agrochemicals for Cultivation of Cornus Fruit in China

Abstract

We made an investigation into the current status of agrochemicals used for cultivation of Cornus fruit in four cultivation provinces in China: Anhui, Henan, Shaanxi and Sichuan. As a result, no agrochemicals except for aluminum phosphide were used in any province. Furthermore, we quantitatively determined the contents of residual pesticides on Cornus fruit which were available commercially in Japan. Although we were not able to obtain any Cornus fruit from Anhui in the Japanese market, seven and one pesticide residues were detected in the samples from Henan and Shaanxi, respectively, and none of those were detected in the samples from Sichuan. The amounts of the six pesticides, other than isocarbophos and triazophos in the samples from Henan, were less than each upper residual limit for fruit stipulated in the Food Sanitation Act in Japan, so we retested on the other three samples from Henan. As a result, isocarbophos and triazophos were not detected in those samples from Henan.