Evaluación del efecto del Ozono (O3) en el control del gorgojo (Sitophilus zeamais) en granos almacenados.

Abstract

This study evaluated the effect of Ozone (O3) on the control of weevil (Sitophilus zeamais) in stored grains. For its control, synthetic gasifying pesticides have been used leaving toxic residues harmful to health. Therefore, the objective of this work was to evaluate the different exposure times of Ozone in stored grains. The experiment was conducted in the Greenhouse of the Faculty of Technical Education for Development of the Catholic University of Santiago de Guayaquil. The experimental design used in the investigation was completely random, with 5 treatments and 5 repetitions, of which were T1 (Absolute Control), T2 (Chemical Control with Aluminum Phosphide), T3 (11 ppm for 10 minutes), T4 (11 ppm for 20 minutes) and T5 (11 ppm for 30 minutes). The variable studied was mortality, which was reviewed 48 hours after applying the treatments, these variables were analyzed by ANOVA (Analysis of variance) and a posterior test of Tukey. The results detected 100 % mortality in T2 (Chemical Control) and T5 (11 ppm for 30 minutes of application). It should be noted that the T5 with Ozone application caused insect mortality without affecting the quality of the treated grains and also did not cause damage to the environment, this being an organic alternative for the control of the corn weevil Sitophilus zeamais.