Abstract

CANDELL DROUET, Andrés. Effect of the application of Bacillus thuringiensis on the control of the armyworm (Spodoptera frugiperda J.E. Smith) of the hybrid corn (Zea mays) INIAP H-551 in the commune of Río Verde, province of Santa Elena. RCTU [online]. 2018, vol.5, n.1, pp.47-56. ISSN 1390-7697.  https://doi.org/10.26423/rctu.v5i1.312.

Corn is a major crop that is planted in the Ecuadorian coastline, primarily attacked by Spodoptera frugiperda. So, this research aims to evaluate the effect of the application of Bacillus thuringiensis (BT) in controlling fall armyworm (Spodoptera frugiperda) of hybrid corn (Zea mays) INIAP H-551 in Rio Verde commune province of Santa Elena. An applied and experimental research was conducted in which two variables were studied: the effect on BT armyworm and fall armyworm population in maize. Seven treatments were established with five different doses of BT, doses were compared with two treatments, one chemical and the control treatment. It was demonstrated that the absolute control was the most targeted treatment and applications of BT and cypermethrin did not allow it reached the threshold of economic damage to the crop. It is recommended to use BT technology as a clean alternative for armyworm control in order to reduce contamination of soil and water, as well as prevent harmful substances entering the food chain.

Keywords : Biological control; Treatment; Cypermethrin; Clean technological alternative.

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