Efectividad del ozono sobre Sitophilus oryzae (L.) (Coleoptera: Curculionidae) bajo condiciones de laboratorio

José Alexander Triana Arcano; Yohan Alexander Solano Rojas; Rita María Ávila; Dilcia María Hernández; José Morales Sánchez

doi:10.18004/investig.agrar.2020.diciembre.2202640

Authors

José Alexander Triana Arcano Universidad Centroccidental Lisandro Alvarado, Decanato de Agronomía, Programa de Ingeniería Agroindustrial. Lara, Venezuela.
Yohan Alexander Solano Rojas Universidad Centroccidental Lisandro Alvarado, Decanato de Agronomía, Departamento de Ecología y Control de Calidad. Lara, Venezuela. https://orcid.org/0000-0001-9762-2815
Rita María Ávila Universidad Centroccidental Lisandro Alvarado, Decanato de Agronomía, Departamento de Procesos Agroindustriales. Lara, Venezuela. https://orcid.org/0000-0002-2366-952X
Dilcia María Hernández Departamento de Ciencias Biológicas. Decanato de Agronomía. Universidad Centroccidental Lisandro Alvarado. Lara, Venezuela. https://orcid.org/0000-0001-5813-4982
José Morales Sánchez Universidad Centroccidental Lisandro Alvarado, Decanato de Agronomía, Departamento de Ciencias Biológicas. Lara, Venezuela. https://orcid.org/0000-0002-2125-5905

DOI:

https://doi.org/10.18004/investig.agrar.2020.diciembre.2202640%20

Keywords:

insecticide, silo, Sitophilus oryzae

Abstract

Ozone has been used as a control strategy to fungi and insects which affect grains and stored foods, due to be highly reactive and its strong oxidizing activity. In this research the insecticide effect of ozone at concentration of 20 ppm, was evaluated on adults of rice weevil, Sitophilus oryzae (L.), applied during 15, 30, 45 and 60 minutes, in prototypes of empty silos and silos with maize. The experiment design was completely randomized with factorial array. There were significant differences (P < 0.001) in the mortality percentage of rice weevilin empty silos (53.5%) and those with maize (16.88%). The exposure time also caused a significant effect on the mortality (P < 0.001), which increased as time did and reached the highest value at 60 minutes (58.25%). Similarly, the interaction silo condition by exposure time to ozone was significative (P < 0,001) and allowed to see differences in the mortality of S. oryzae, which percentages were higher in empty silos than in silos with maize. These results show that ozone had a moderate insecticide effect on S. oryzae.

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