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The bean seed beetle Bruchidius incarnatus is a major insect pest for stored grains that causes great economic damage. The investigated research aimed to evaluate the efficacy of two species of algae: Fucus vesiculosus and Spirulina platensis as natural alternative pesticides against Bruchidius incarnatus stages.

The efficacy of two tested algae with amounts of 0.25, 0.35 and 0.50 g were evaluated on B. incarnatus stages. The activities of some biochemical components were assayed to determine the algae effect. Seed germination and growth parameters were studied.

F. vesiculosus caused higher potent on larval and adult stages than S. platensis. Antioxidant enzymes Glutathione Peroxidase (GPX) and Superoxide Dismutases (SOD) in treated adults have reached the highest level when compared with control. Some biochemical components in adults …