Insecticidal effect of diatomaceous earth and dolomite powder against Corn weevil Sitophilus zeamais Motschulsky, 1855 (Coleoptera: Curculionidae)

Authors : Alyssa Cristina OLİVEİRA FREİTAS, Adriana Aparecida SİNOPELİS GİGLİOLLİ, Ronaldo Roberto TAİT CALEFFE, Helio CONTE

Pages : 490-497

View : 15 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Sitophilus zeamais Motschulsky, 1855 insert ignore into journalissuearticles values(Coleoptera: Curculionidae); which develops inside the grain, is an aggressive pest of stored grains. Here, we evaluated the efficiency of diatomaceous earth insert ignore into journalissuearticles values(DE);, Diatomita CI/325 CX, and dolomite insert ignore into journalissuearticles values(DOL);, Dolomita Dr. Kanyo, against S. zeamais reared on corn under laboratory conditions and observed external alterations on treated insects using scanning electron microscopy insert ignore into journalissuearticles values(SEM);. Insects treated with both DE and DOL were impregnated with particles on the body surface, and they showed 100% mortality after 10 days of exposure. Damages caused by inert dusts may have contributed to dehydration and desiccation, consequently, leading insects to death. Thus, diatomaceous and dolomite were effective against S. zeamais under laboratory conditions.
Keywords : Corn, scanning electron microscopy, inert dusts, pest control