Abstract

MENDOZA ELOS, Mariano et al. Bio-insecticides to control storage pests and their relationship to the physiological seed quality. Rev. Mex. Cienc. Agríc [online]. 2016, vol.7, n.7, pp.1599-1611. ISSN 2007-0934.

A globally 13% of estimated damage by weevils. In Mexico there are more than 25 species of insects that attack stored grains and seeds and at the same time they reduce the physical and physiological seed quality. Therefore, the objective of this study was to evaluate bio-insecticides to control weevils of corn, beans and wheat and their relationship to the physiological seed quality. The work was conducted at the Instituto Tecnológico de Roque, Celaya, Guanajuato, Mexico, in 2011. The castor oil plant extracts, governor and garlic was used in two concentrations to control Acanthoscelides obtectus, Sitophilus granarius and Sitophilus zeamais. The experimental design used in the research was completely randomized factorial arrangement with 11 treatments and three repetitions. They are sampling at 24, 48 and 144 h, to assess mortality, vigor and seed germination were performed. The results detected significant differences between treatments. Excelling the castor oil as the most effective, because it caused 100% mortality at 24 h for the three species of weevils. All extracts in the three species of seed and for the three species of weevils exceed the criterion of 50% mortality rate, which is considered acceptable. The biopesticide castor ricin was affecting greater proportion physiological seed quality of the three cultivars studied.

Keywords : bioinsecticides; extracts; mortality; vigor and seed germination.

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