Thirteen plants were ground to powder and evaluated under laboratory conditions singly and in combination with calcium carbonate against the maize weevil, Sitophilus zeamais. Twenty couples of seven days old of S. zeamais were placed in a container with 250 g of corn mixed with the dusts. 44 treatments with three replicates were evaluated in a completely randomized design with factorial arrangement. Treatments that caused at least 40% mortality of adults or at least 50% reduction of the F1 emergence in relation to the untreated control were considered promissory, and were submitted to an analysis of variance and to a Tukey multiple test of comparison (p=0.05). The highest levels of mortality in the treatments with vegetable dusts alone were obtained with Chenopodium ambrosioides L, Peumus boldus M. and seeds of Azadirachta indica J., with mortality values of 100, 99.1 and 88.4%, respectively. Regarding the percent of F1 reduction, the best treatments were Ocimum basilicum L, Laurus nobilis L. and Piper auritum K., with 97.5, 98.2 and 100% reduction in F1 progeny, respectively. Mixing vegetable powders with calcium carbonate increased their activity. Weight loss of corn grain was not a good parameter for evaluating the efficacy of these treatments.