The bioefficacy of several inert materials, such as Diatomaceous earth (DE), bentonite, and biochar enhanced with pirimiphos-methyl against Sitophilus oryzae, was used to evaluate the insecticidal activity of three new formulations using the technique of mixing with grain. DE was the most effective material (LC₅₀ 3.198 g/kg), followed by biochar LC₅₀ 3.709 g/kg, whereas bentonite was the least effective (LC₅₀ 3. 979 g/kg). The three materials were loaded with pirimiphos-methyl (0.5%). The formula of Pirimiphos-methyl with DE reported the highest significant effect compared to the other two formulations, with an LC₅₀ value of 0.082 g/kg. DE formula had a co-toxicity coefficient value that was 6.46 times greater than pirimiphos-methyl, followed by the biochar formula, which was 1.74 times more effective, and the bentonite formula, which had a 0.69-fold increase in activity. In the laboratory examination of the wheat’s free and compact bulk densities after being treated with LC50s of each dust material, DE slightly affected wheat-free bulk density. Still, both bentonite and biochar reduced the free bulk density. However, all the tested materials decreased in compact bulk density. The germination percentages of wheat treated with LC₅₀ values of DE and bentonite and biochar after 10 days of storage revealed no significant difference between treated and untreated seeds after 7 days of germination.

采用甲基嘧啶磷增强的硅藻土 (DE)、膨润土和生物炭等几种惰性材料对米蝇的生物功效，通过与谷物混合的技术来评估三种新制剂的杀虫活性。 DE 是最有效的材料（LC ₅₀ 3.198 g/kg），其次是生物炭 LC ₅₀ 3.709 g/kg，而膨润土效果最差（LC ₅₀ 3. 979 g/kg）。这三种材料均负载有甲基嘧啶磷 (0.5%)。与其他两种制剂相比，含有 DE 的甲基吡米磷配方具有最高的显着效果，LC ₅₀值为 0.082 g/kg。 DE配方的共毒性系数值是甲基嘧啶磷的6.46倍，其次是生物炭配方，其活性提高了1.74倍，膨润土配方的活性提高了0.69倍。在用每种粉尘材料处理后小麦的游离堆积密度和致密堆积密度的实验室检查中，DE 轻微影响了游离小麦堆积密度。尽管如此，膨润土和生物炭都降低了自由堆积密度。然而，所有测试材料的致密堆积密度均下降。用DE、膨润土和生物炭的LC ₅₀值处理的小麦在储存10天后的发芽率显示，在发芽7天后，处理过的种子和未处理过的种子之间没有显着差异。