The efficacy of partial treatment of two commodities (wheat and rice) with thiamethoxam against adults of Rhyzopertha dominica (F.) and Sitophilus oryzae (F.) was tested by mixing different proportions of thiamethoxam-treated and untreated grains. Thiamethoxam was applied to these grains in two different doses 1 and 5 ppm, while the percentage of the treated grain quantity ranged between 0 and 100%. Adult mortality was recorded after time exposure intervals of 7 and 14 d. Irrespectively of the dose, adult mortality was raised with increase in the percentage of treated kernels as well as the exposure time. Applications of thiamethoxam on wheat were more effective than on rice and on R. dominica than on S. oryzae, especially at 1 ppm, for both exposure intervals. The effective “critical” percentage, causing control similar to 100% treatment, of thiamethoxam to grain mass at 5 ppm was 50% for both species. For the examined scenario of partial treatment, thiamethoxam found to be effective against the tested species which makes it a candidate for use in the stored grain protection.

通过混合不同比例的噻虫嗪处理和未处理的谷物，测试了用噻虫嗪对两种商品（小麦和大米）进行部分处理对多米尼卡根霉(F.)和米粒线虫( Sitophilus oryzae) (F.)成虫的效果。噻虫嗪以 1 ppm 和 5 ppm 两种不同的剂量施用于这些谷物，而处理过的谷物数量的百分比范围在 0 到 100% 之间。在 7 天和 14 天的暴露时间间隔后记录成人死亡率。与剂量无关，成年死亡率随着处理谷粒百分比和暴露时间的增加而增加。噻虫嗪在小麦上的应用比水稻和多米尼加红豆比对稻瘟病更有效，尤其是在 1 ppm 时，对于两个暴露间隔。两种物种的 5 ppm 噻虫嗪与谷物质量的有效“临界”百分比（导致控制类似于 100% 处理）为 50%。对于部分处理的检查场景，发现噻虫嗪对受试物种有效，这使其成为用于储存谷物保护的候选物。