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The present work was conducted in the laboratory of Plant protection, Shandweel Agricultural Research Station, Sohag Governorate to investigate the effect of priming of faba bean seeds with three concentrations, 50, 100 and 200ppm for each substances of salicylic acid, acetyl salicylic acid and methyl salicylate on survival, duration and wing formation of the cowpea aphid, Aphis craccivora Koch., also, their repellent effect was determined. Results obtained showed that the highest effect was recorded in salicylic acid at 200ppm (86.96%) after 24 hours, however, no repellent effects were recorded from acetyl-salicylic acid. Priming faba bean seeds with salicylic acid and methyl salicylate elongated the nymphal stage, decreased their survival and increased wing formation compared to control. The effects of the three substances were found to be concentrated dependant. The use of salicylic acid and methyl salicylate as resistance inducers hold great promise for application for A. craccivora control as eco-friendly method.

journal of plant protection and pathology /journal of plant protection and pathology

The Impact of Faba Bean Seeds Soaking in Salicylic Acid, Acetyl-Salicylic Acid and Methyl Salicylate on Inducing Plant Resistance against the Cowpea Aphid, Aphis craccivora Koch.