Ecological alternatives for the control of Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) in the dent corn crops

Abstract

With the purpose of generate ecological alternatives’s effects for the control of Spodoptera frugiperda through the dent corn crops. It has been made a field experiment in La Libertad-Peru. It has been employing a completely randomized experimental design (CRED) with 3 ecological treatments (T3, T4 y T5), a chemical witness (T2) and a cero witness (T1) with 4 repetitions. The variables evaluated were: number of adults captured of Spodoptera frugiperda, average of eggs masses per plant, parasitism percentage, damage percentage, infestations percentage, amount of died caterpillars and finally the yield of dent corn production. The results show that in all the evaluated variables, at exception of average of eggs masses per plant and eggs parasitism percentage, exist a slight superiority of the chemical treatment (T2) in relation to the ecological treatments, but without being significantly different in exception to the amount of died caterpillars. At the same time the ecological treatments show that if they are applied since the corn emergence these can control the damage that causes Spodoptera frugiperda. According to the evaluated variables and to the analysis performed, it is concluded that the ecological treatment T3 could be an ecological alternative to control to Spodoptera frugiperda through the dent corn crops.