Avaliação de seletividade de produtos fitossanitários utilizados na cultura do crisântemo a adultos de Orius insidiosus (Say, 1832) (Hemiptera: Anthocoridae) em laboratório

Abstract

The goal of this research was to evaluate the selectivity of products used in the chrysanthemum crop to adults of Orius insidiosus (Say). The experiments were kept under controlled conditions at 25±1oC, RH 70±10% and L/D 12:12 h, in Lavras, MG, Brazil. The insecticides evaluated were abamectin (0.0009 g a.i./100 ml), cartap (0.06 g a.i./100 ml), cyromazine (0.011 g a.i./100 ml), fenpropathrin (0.009 g a.i./100 ml) and imidacloprid (0.042 g a.i./100 ml). The sprays were done using Potter's tower calibrated to 15 lb/pol2, applying volume of 1.5±0.5 mg of solution/cm2. The applications were realized directly in the pairs of O. insidiosus. It was evaluated the action of the products on mortality, oviposition, fertility and the adult's predatory capacity. Abamectin, fenpropathrin and imidacloprid were highly harmful to the adults of O. insidiosus. Cyromazine and cartap were moderately toxic. Cyromazine and cartap presented possibilities of being recommended in integrated pest management programs of the chrysanthemum crop.