The insecticide resistance in two planthoppers from three areas to three insecticides
【摘要】：正 Migrating insects brown planthopper (BPH), Nilaparvata lugens Stal and white-backed planthopper (WBPH), Sogatella furcifera Horvath are both most harmful insects on rice in China. Chemical control is thought to be the best way to manage them, but it may cause insecticide resistance. Methamidophos, buprofezin, and imidacloprid were the three insecticides often used. In 2000 and 2001, resistance of the field populations collected from three areas, i.e.