Abstract

QUINONES DENA, Héctor et al. Effectiveness of vegetable powders on adults of Sitophilus zeamais Motschulsky Coleoptera: Curculionidae. Rev. Mex. Cienc. Agríc [online]. 2017, vol.8, n.3, pp.721-726. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v8i3.45.

Maize is the most important crop in Mexico due to its varied uses, such as food for human and animal consumption, extraction of oils and other derivatives, among others. This crop, like many others, presents phytosanitary problems of diseases and pests, among which is the corn weevil (Sitophilus zeamais), considered as one of the most important stored grain pests. Chemical insecticides have been used for its control, which has caused problems of resistance, contamination of the environment and residues in stored foods. An alternative to this problem is the use of biorrational products derived from plants, which are generally biodegradable, do not produce ecosystem disequilibrium nor effects to health. In this investigation, nine plant powders were evaluated on the mortality of S. zeamais adults, in concentration of 1, 2 and 3 g of each of them for each 0.5 k of corn grains. A completely randomized design with 10 treatments and three replicates was used. The highest mortality was obtained with the treatment based on three grams for all treatments, with black pepper and ruda having the highest mortality rates with 68.84 and 60.42%, respectively, while the other treatments showed mortalities less than 50%.

Keywords : botanical insecticides; corn weevil; stored grains; vegetable powders.

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