Chemical Compositions and Fumigation Effects of Essential Oils Derived from Cardamom, (L.) Maton, and Galangal, (L.) Willd, against Red Flour Beetle, (Herbst) (Coleoptera: Tenebrionidae).

This study explores the use of essential oils from cardamom ( (L.) Maton) and galangal ( (L.) Willd) as alternatives to synthetic insecticides for controlling the red flour beetle, (Herbst).

Effect of larvae treated with mixed biopesticide Bacillus thuringiensis-abamectin on sex pheromone communication system in cotton bollworm, Helicoverpa armigera.

Third instar larvae of the cotton bollworm (Helicoverpa armigera) were reared with artificial diet containing a Bacillus thuringiensis-abamectin (BtA) biopesticide mixture that resulted in 20% mortality (LD20). The adult male survivors from larvae treated with BtA exhibited a higher percentage of "orientation" than control males but lower percentages of "approaching" and "landing" in wind tunnel bioassays. Adult female survivors from larvae treated with BtA produced higher sex pheromone titers and displayed a lower calling percentage than control females.