Abstract

CONTRERAS-MIRANDA, Javier Antonio  and  RAMIREZ MARIN, Miguel Ángel. Synthetic insecticides to control the brown bug (Euchistus heros f.) (Hemíptera: Pentatomidae). RCTU [online]. 2020, vol.7, n.1, pp.8-13. ISSN 1390-7697.  https://doi.org/10.26423/rctu.v7i1.505.

Laboratory test were stablished, with the objective of evaluate the susceptibility of adults of the brown bug, Euchistus herus, to two organophosphorus insecticides: Chlorpyrifos and Acephate. The LC50 of each chemical was initially determined. Later it was evaluated the effect of every product on the mortality of the insect at four different time periods after application. Four experimental treatments (24, 48, 72, 96 hours after the application) were distributed in a random design with 4 replicates each. Within each insecticide there were no significant differences between the mortality and the period of time after application. However, it was observed that Acephate killed 75% of the bugs, while the Chlorpyrifos had a mortality of 66.6%. In order to reach higher levels of mortality and control of E. herus it is recommended to evaluate other chemicals that present different modes of action.

Keywords : con-trol; bug; soy-bean.

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