Current status of insecticide susceptibility in the brown planthopper in Cambodia

• Published in: Journal of Pesticide Science Vol. 42; no. 2; pp. 45 - 51
• Main Authors: Matsukawa, Mizuki, Ito, Kasumi, Kawakita, Kazuhito, Tanaka, Toshiharu
• Format: Journal Article
• Language: English; Japanese
• Published: Japan Pesticide Science Society of Japan 01.01.2017; Japan Science and Technology Agency
• Subjects: Abamectin; Chlorpyrifos; Cypermethrin; Developing countries; Farming; Ingredients; Insecticides; Labels; LDCs; leaf-dipping method; Markets; Nilaparvata lugens (Stål); Original; Pest control; Pesticides; Populations; rice pest insects; Risk; Risk reduction; Rural areas; Cambodia; rice pest insects; Nilaparvata lugens (Stål); leaf-dipping method
• ISSN: 1348-589X; 1349-0923
• DOI: 10.1584/jpestics.D16-101

Little information exists about pesticide availability and its effect on pest control in rural regions of developing countries. The availability of different insecticidal ingredients in rural areas of Cambodia was determined by inspecting labels on products used by farmers and in retail shops. A large number of products available in markets and used by farmers contained abamectin, emamectin benzoate, cypermethrin, and chlorpyrifos. The effects on the brown planthopper (BPH; Nilaparvata lugens (Stål)) were investigated by comparing the susceptibility of three BPH populations in Cambodia to twelve active ingredients in 2015. All populations showed high susceptibility to abamectin and cypermethrin; however, regional differences in susceptibility were observed for the other ingredients. The implication was that farmers selected the most effective products based on sellers’ opinions. It is important to monitor insecticide use and BPH susceptibility in each region of Cambodia in order to minimize the risk of high BPH population densities.