Field evaluation of the potency of Bacillus thuringiensis on lepidopterous insects infesting some field crops in Egypt
1991
Salama, H.S. (National Research Centre, Cairo (Egypt)) | Salem, S. | Matter, M.
Agrotis ipsilon and Spodoptera littoralis can be successfully controlled on various field crops using Bacillus thuringiensis (Dipel 2X) baits and sprays. Baits based on the pathogen at 200-260 g/Feddan, scored the best efficacy against A. ypsilon in clover fields followed by potato, tomato, and cotton cultivations. Addition of some chemical additives (inorganic salts) to B. thuringiensis bait formulations greatly enhanced its potency. This was associated with an obvious increase in the yield of clover, potato and tomato crops, calcium oxide showed to be highly efficient in this respect. Sprays of Dipel 2X were also found as affective as lannate in controlling S. littoralis on clover cultivations
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