[The Hwankyung Ilbo] The Rural Development Administration found microorganisms in the soil that can break down seven types of organophosphorus insecticide.

Organophosphorus insecticide is the most widely used insecticide in the world and more than 100 species are commercially available. Organophosphorus insecticides are less toxic and persistent than organic chlorinated insecticides such as DDT but can be detected in crops and soil if misused.

The strain, Sphingobium Cam5-1, was found to break down seven organophosphorus insecticides. There are six types of pesticides used in Korea, including Ethoprophos, Cadusafos, Phenthoate, Phorate, Fosthiazate and Profenofos, and one type of malathion that is not currently used.

When this strain was inoculated on the soil containing the insecticide Cadusafos (10 mg / kg), the insecticide was completely decomposed in two days. It took more than 30 days for the insecticide to be decomposed in the soil that the strain was not inoculated.

“Using this technology, we can effectively remove any pesticide left in the soil, thereby preventing the cancellation of eco-certification caused by unintentional introduction of agricultural chemicals, and it will also help preserve soil ecosystem,” said an official from the Rural Development Administration.

조수빈 리포터  press@hkbs.co.kr

<저작권자 © 환경일보, 무단 전재 및 재배포 금지>