Tarbiat Modares University Journal of Crop Protection 2251-9041 4 1 2015 03 01 Influence of grain type on the susceptibility of Tribolium confusum adults to three diatomaceous earth formulations 113 119 1194 10.48311/jcp.2015.1194 EN Masumeh Ziaee Department of Plant Protection, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran. Journal Article Insecticidal efficacy of three diatomaceous earth (DE) formulations, DEBBM, DEA and F2 was evaluated on three different wheat cultivars, Chamran, Verinak and Behrang, against <em>Tribolium confusum</em> Jacqueline du Val. DEs were applied at the rates of 100, 200 and 300 mg/kg. Bioassays were carried out on wheat at 27 ± 1 °Cand 55 ± 5% RH in continuous darkness. Mortality of adults was counted after 2, 7 and 14 days of exposure. Adults of<em> T. confusum</em> were the most susceptible to DEBBM in Behrang. So that DEBBM concentration of 100 mg/kg after 7 days of exposure caused 98% mortality which reached 100 after 14 days. Therefore, Behrang was the most tolerant cultivar to <em>T. confusum</em> infestations. Furthermore, DEBBM was more effective than the other two testedformulations. https://jcp.modares.ac.ir/article_1194_a42a596fc71e17828440030074d15e74.pdf