مقالات ›› Effect of Neonicotinoids insecticides (imidachlopride and thiamethoxam) on Metopolophium dirhodum (Walker) aphids laborator condition ›› پورتال سازمان جهاد کشاورزي خراسان شمالي
 
          Due to entry of neonicotinoid insecticides to the filed of pest control and because they are systemic, these pesticides are one of the most important group of insecticides in the past decade.Integrated pest management programs have great emphasis on the use of low-risk neonicotinoid insecticides. In this study some comparison tests were performed about effects of Imidachlopride and thiamethoxam insecticides Metopolophium dirhodum in laborator condition. This aphid was reared at 20±1 and relative humidity of 60±10%, 16 hours of light and 8 hours of dark photo period. Mortality rate of this aphid provided on 4-6 days nymphes with 7 concentration for imidachlopride(SC 35%) and 8 concentration for thiamethoxam(WP 25%) by leny dipping bioassay experiments.Mortality results after 48 hours analyzed with SPSS and POLO PC software.
LC50 determination were done for both insecticides. (imdachlopride 24/54 and thiametoxam 31/77) According to the results (LC 50) it can be said that Imidachlopride compared to the thiametoxam is more efficient, but more studies needed to best recommendation.