Management of Cabbage Aphid, Brevicoryne brassicae L. on Canola Crop Using Neonicotinoids Seed Treatment and Salicylic Acid

الملخص

Cabbage aphid, Brevicoryne brassicae L. is one of the most important pests on canola worldwide and in Egypt. Field experiments were conducted in the Faculty of Agriculture Farm, Suez Canal University, Ismailia Governorate during 2012/13 and 2013/14 seasons. The efficacy of neonicotinoids seed treatment and spraying salicylic acid (SA) alone or in combination against B. brassicae and their impact on canola yield were investigated. Results showed that canola seeds treated with Gaucho 70% WS, Cruiser70% WS and Actara 25% WG were not effective for managing of B. brassicae in the late of growing season from 15^th week to 21^st week. However, SA application showed significant difference in reduction of infestation compared to control. Data revealed that seed treatment with neonicotinoid insecticides followed by foliar application with SA was associated with enhanced resistance against B. brassicae. Moreover, results showed relatively increase in seed yield/plant (g) and yield/fed. (kg) in this treatment than neonicotinoid insecticides seed treatment alone, or SA alone and control.