Summary The codling moth [ Cydia pomonella L. (Lepidoptera: Tortricidae)] is the main pest in most apple orchards Syria. It causes billions of dollars loss fruit crops every year. present work examined effects gamma radiation and Bacillus thuringiensis (BT) on F 1 progeny C. pomonella. experimental design was based two factors, namely offspring produced by males irradiated at a dose 150 Gy, art...

Tomato leafminer, Tuta absoluta (Meyrick), (Lepidoptera: Gelechiidae), poses severe threats to sustainable tomato production globally with a high capacity develop resistance pesticides. Recently, the management programs for this cosmopolitan pest have relied on combinations of chemical insecticides which exacerbate problems cross-resistance and adverse environmental effects. A novel concept int...

El objetivo del trabajo fue evaluar Bacillus thuringiensis var. Kurstaki (Bt-K), como alternativa de control biológico polillas papa Phthorimaea operculella y Tecia solanivora, en almacenamiento Cerro Punta, Chiriquí, República Panamá. Para ello, se seleccionaron cinco lotes papa, sometidos a diferentes dosis aplicación producto Dipel 6.4WG (Bt-K). Se empleó un Diseño Bloques Completos al Azar,...

The persistence slope of Bacillus thuringiensis (Bt) based products in the field is an important parameter to evaluate their efficacy. The half-life, estimated based on persistence slope parameters, is one of the most effective tools to select microbial pesticides. The aim of this research was to study the relationship between viability loss of Bt spores on maize leaves and their concentration,...

The use of biological control products enhances the reduction harmful pressures on environment caused by conventional pesticides. Therefore, this study aims to evaluate toxicity eight bioinsecticides black cutworm Agrotis ipsilon (Hufnagel) (Lepidoptera: Noctuidae) understand relationships between insecticide exposure and insect response at individual population levels. bioassay results showed ...

Biological control is a growing branch in Brazil, and with it comes the need to obtain efficient enemies of pests. The use entomopathogens has expanded investigate their selectivity non-target organisms. present work was conducted pinecone (Annona squamosa L.) orchard objective evaluating which locations plant (lower, middle or upper third) effects entomopathogens: Beauveria bassiana, Metharhiz...