Abstract
Bacillus thuringiensis Berliner (B.t.) preparations were bioassayed against larvae of the European corn borer,Ostrinia nubilalis Hübner, to determine their potency.B.t. serovar 3a3b,kurstaki (Dipel) was more potent thanB.t. serovar 1,thuringiensis (Bactospeine I);B.t. serovar 3a3b,kurstaki (Toarow CT) — in which the spores are inactive; or serovar 7,aizawai (ABG 6104). Another preparation of 3a3b,kurstaki (Bactospeine III), at concentrations of 0.5 and 1% sprayed on leaves of potted sweet corn seedlings and plants in the field, was active against larvae reared on an artificial diet in the laboratory. The pH of the corn leaf surface ranged from 6.9 to 7.5, before and after application.
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Navon, A., melamed-madjar, V. Screening ofbacillus thuringiensis preparations for microbial control ofostrinia nubilalis in sweet corn. Phytoparasitica 14, 111–117 (1986). https://doi.org/10.1007/BF02980897
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DOI: https://doi.org/10.1007/BF02980897