Enhancement of Insecticidal Activity of the Acetamiprid Soluble Concentrate using a Photostabilizer

광안정제를 이용한 acetamiprid 액제의 살충효과 증진

  • Published : 2006.09.30

Abstract

The study was carried out to select the effective adjuvant as a photostabilizer for acetamiprid 5% SL(soluble concentrate) and to find its optimum content by using chemical and biological methods. Adjuvants used for the study were KS1 and KS2. Photodegradation test, insecticidal efficacies and residual analysis for the study were investigated. Although photodegradation rate of acetamiprid SL was decreased by addition of KS1 and KS2, the difference between KS1 and KS2 was not significant. As KS2 showed better efficacies against the cotton aphid (Aphis gossypii) and higher amount of residue on pepper than KS1, KS2 was selected as a photostabilizer for acetamiprid SL. Acetamipid SL with KS2 showed lower photodegradation rate, better efficacies against the cotton aphid (Aphis gossypii) and higher amount of residue on pepper as content of KS2 in acetamiprid SL was decreased. Therefore, it was concluded that the optimum content of KS2 was 0.1%. These results have demonstrated that the selected adjuvant could be used to enhance insecticidal activity and reduce spay dose of insecticide by protecting its photodegradation.

본 연구는 살충제인 acetamiprid 5% 액제(SL)의 광분해 문제를 해결하고자 화학적 및 생물학적 시험방법을 통하여 효과적인 보조제를 선발하고 선발된 보조제의 최적함량을 규명하고자 수행되었다. 시험에 사용된 보조제는 KS1과 KS2 2종이었으며, 화학적 평가를 위하여 광분해 시험을 실시하였고, 생물학적 평가를 위하여 고추를 대상으로 목화진딧물(Aphis gossypii)에 대한 살충 활성과 잎에서의 잔류량을 측정하였다. 보조제 첨가에 따라 acetamiprid 5% 액제의 광분해율은 감소되었으나 보조제의 종류에 따른 차이는 그다지 크지 않았다. 그러나 고추 목화진딧물에 대한 살충 활성과 옆에서의 잔류량 측정결과로는 보조제 KS1보다는 KS2가 우수한 생물활성과 높은 잔류량을 나타내어 KS2를 보조제로 선발하였다. 선발된 보조제 KS2를 0, 0.1, 0.5, 1% 함유한 함량별 시험에서는 함량이 가장 적은 시료에서 가장 낮은 광분해율을 보였으며, 고추 목화 진딧물에 대한 살충 활성과 잎에서의 잔류량 측정 결과에서도 보조제 KS2의 함량이 감소할수록 보다 우수한 생물활성과 높은 잔류량을 나타내는 것으로 측정되었다. 이에 따라 선발된 보조제 KS2의 최적 함량은 0.1%인 것으로 판단되었다. 이상의 결과는 적절한 보조제의 선발에 의하여 살충제의 광분해를 막을 수 있으며 이를 통하여 살충제의 활성을 증가시키고 살충제의 처리량을 줄일 수 있음을 보여주고 있다.

Keywords

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