Stored-product insects can cause postharvest losses, estimated from up to 9% in developed countries to 20% or more in developing countries. There is much interest in alternatives to conventional insecticides for controlling stored-product insects because of insecticide loss due to regulatory action and insect resistance, and because of increasing consumer demand for product that is free of inse...

A microwave radar system that senses motion was tested for capability to detect hidden insects of different sizes and activity levels in stored products. In initial studies, movements of individual adults or groups of Lasioderma serricorne (F.), Oryzaephilus surinamensis (L.), Attagenus unicolor (Brahm), and Tribolium castaneum (Herbst) were easily detected over distances up to 30 cm in air. Bo...

The objectives of this work were to assess phosphine resistance in insect populations (Tribolium castaneum, Rhyzopertha dominica, Sitophilus zeamais and Oryzaephilus surinamensis) from different regions of Brazil and to verify if the prevailing mechanism of phosphine resistance in these populations involves reduced respiration rates. Sixteen populations of T. castaneum, 15 of R. dominica, 27 of...

Approximately 50% of total harvested cereal grains are lost during the post-harvest handling and storage, insects main cause for both quantity (reductions in weight) quality. In present study effect microwave radiation was studied on one stored product pest, flour beetle Tribolium castaneum (Hersbt). Adult were obtained from infested products at stores specialized selling Sakaka. Insects with i...

In the present investigation various solvents i.e. acetone, chloroform, petroleum ether, methanol, hexane and aqueous extracts of stem, root and flower of Capparis decidua were evaluated for insecticidal activity against the Rhizopertha dominica (Fabr). For evaluation of insecticidal activity different bioassays were conducted and insects were exposed with varying doses of each extract. These h...