In order to assess the sensitivity levels of *Chilo suppressalis* to various types of insecticides across different regions in Jiangxi Province, researchers from Jiangxi conducted a study using the spot method. They tested the susceptibility of representative rice pest populations to eight insecticides belonging to five major classes.
The results revealed that mites found in Jing'an, Nanchang, and Ji'an rice-growing areas showed extremely high sensitivity to triazophos, chlorpyrifos, rice flour, and certain other insecticides. They were also highly sensitive to butene fipronil (butyronitrile) and insect benzamide. However, the most notable finding was their exceptionally high sensitivity to acesulfame and the biopesticide avermectin.
Interestingly, when comparing the sensitivity of scorpion mite populations across the three regions, the relative sensitivity index for chlorpyrifos and avermectin was relatively high—3.88 and 3.85, respectively. For all other tested agents, the differences in sensitivity were much smaller, with relative sensitivity indices remaining below 1.5. This suggests that while some insecticides are more effective against these pests, others may not be as impactful, highlighting the need for targeted pest management strategies in different parts of Jiangxi.
This study provides valuable insights into the effectiveness of various insecticides and can help guide future pesticide use in rice cultivation, ensuring both environmental safety and agricultural productivity.
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