Associação de inseticida sintético e biológicos no manejo de Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae)

Abstract

The present work aimed to evaluate an association of synthetic and biological insecticides without control of Spodoptera frugiperda. The products used were Cartugen® (Baculovirus Spodoptera frugiperda multiple nucleopolyhedrovirus) and Crystal® (Bacillus thuringiensis subsp. tolworthi, 344) bioinsecticides. Lannate® insecticide (Methomyl). The control was obtained from distilled and sterilized water + 0.01% Tween80®. All treatments were obtained from the Potter tower adapted on first instar caterpillars. After the application of treatments, evaluations were carried out every 24 hours. The experimental design was completely randomized, consisting of 6 treatments, each treatment being composed of 5 replications containing 6 insects. Obstacles to mortality obtained accumulated and efficiency. Efficiency data were prepared by analysis of variation and as treatment methods were compared by Tukey test at 5% probability. There was no significant difference between treatments regarding the efficiency of control over S. frugiperda, except for the bioinsecticide Crystal®. Regarding associations, only Lannate® associated with Crystal® provided a significant increase in efficiency. Lannate® isolated and associations with bioinsecticides provided 100% mortality up to 48 hours after applications.