Avaliação do efeito de actellic super e sumicombi no controlo de gorgulho -callosobruchus sp no feijão boer - cajanus cajan L millsp

Abstract

The aim of this work was to test in the laboratory the effect of the insecticide Atellic super powder, and the insecticide Sumicumbi 1.8% powder, on the level of weevil infestation in pigeonpea. The trial conducted in the Plant Health Laboratory of the Faculty of Agronomy and Forestry Engineering (growth room n 1) with material (pioneer beans and pests) collected in the District of Murrumbala Province of Zambézia. It was carried out in two different environments for each pesticide: i) Environment inside the cage - where insects could choose between treatments. ii) Environment inside the frescoes - where insects were confirmed at each treatment. Collection of final data on percent infestation was carried out twenty-nine days (29) after artificial infestation. The results showed that both insecticides significantly reduced infestation levels. In general, no significant differences were observed between the doses tested. The mean infestation level observed in treated beans was 4.4% and 6.6% respectively for Actellic and sumicombi in the cages. Calculation of the costs of applying Actellic and the loss of production value if the beans are not treated suggest that treatment with Actellic is economically beneficial if the product is going to be stored for more than a month before being sold. Based on the morphological and external morphological characteristics of males, it was concluded that only the species C., maculatus F. was present.