A comparative evaluation of weight loss in grains of Vigna aconitifolia caused by Callosobruchus chinensis Linn. when treated with different plant extracts

Abstract

Pulses are amongst the rich sources of protein and play a very significant role in the diet of common men but unfortunately they suffer an extensive damage during the storage especially due to insect infestation. The pulse beetle, Callosobruchus chinensis Linn. (Coleoptera: Bruchidae), is a notorious pest that causes serious major damage to stored pulses, resulting in economic losses for farmers and the food industry. The losses caused are both, quantitative as well as qualitative. The various hazards linked with presently employed synthetic pesticides, such as residual effects, pest resurgence, prevalent environmental and ecological hazards, insect pest resistance, and farmer economy, have led us to the use of some alternates to manage insect pests that are environmentally friendly, biodegradable, economical, and equally effective, and also causing no harm to the non-target species. One such strategy is to employ phytochemicals, which are natural plant-derived compounds with insecticidal properties. The present work was therefore undertaken to screen certain plant formulations to test their efficacy against the bruchid raised on grains of Vigna aconitifolia and to study their potency as grain protectant against the bruchid.