The test includes two parts: the community test and the field demonstration. The community experiment was conducted in Zhangjiagang and Jiangyan. A total of 4 treatments including 20% ​​chlorantraniliprole suspension (10 ml), 5% fipronil suspension (50 ml), 40% chlorpyrifos (50 ml), and blank control were used. Demonstration in Daejeon was carried out in Zhangjiagang, Jiangyan, and Fuyang, using 20% ​​chlorotoluene benzamide suspension 10 ml per acre. The control agents in Zhangjiagang were 5% fipronil suspension and 32% propofol flomberine EC, each dose was 50 ml; the control agent of Jiangyan was 20% methomoxetine, chlorpyrifos WP and 16 % of fipronil chlorpyrifos emulsifiable concentrate, the dosage per acre was 100 grams and 120 milliliters respectively; the control agent of Fuyang was 5% fipronil suspension, and the dose per acre was 50 milliliters. All treatments were applied during the peak period of the youngest larvae of the fifth-generation (3rd generation) rice leaffolder.
The results of the plot test showed that after 3-15 days of treatment with chlorantraniliprole, they all showed higher insecticidal and leaf-preserving effects. The insecticidal effect was 79.2% 3 days after the treatment, which was higher than that of the control agent. The insecticidal effect (94.3-96.29%) and the leaf-protecting effect (94.4-96.42%) were good for 7-15 days after the drug. The field demonstration results showed that the insecticidal and leaf-protecting effects were more than 92.4% 7-15 days after the treatment with chlorantraniliprole, and the control effect was significantly better than the single agent of fipronil and its compound, and 32% of profenofosin fluoride. Bellus urea EC and 20% methionine chlorpyrifos WP.
The summary results showed that chlorantraniliprole has a good effect on the control of rice leaf roller, and has a long effective period. The insecticidal and leaf-preserving effects are better than the control agent. It is recommended to use 10% of 20% chlorantraniliprole suspension per acre from the time of egg hatching of rice leaf roller to the peak of young larvae. The drug is highly toxic to silkworms, and the mixed area of ​​rice and mulberry should pay attention to safe drug use.
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