The effectiveness of selected chemical and biological insecticides in control of European corn borer (Ostrinia nubilalis Hbn.) on sweet corn
2005
Mazurek, J. | Hurej, M., E-mail: [email protected] | Jackowski, J. (Wroclaw Agricultural University (Poland). Dept. of Plant Protection)
The trials conducted with selected chemical and biological insecticides in 1998-00 showed the highest effectiveness of Karate Zeon 100 CS (lambda-cyhalotrine) in European corn borer (ECB) larvae control in sweet corn. The efficacy of biological insecticides containing Bacillus thuringiensis ssp. kurstaki: Biobit 3.2 WP and Lepinox WDG was very variable between the years. Reasons for insufficient efficacy of these products are discussed. The most appropriate time for the application of a chemical insecticide against ECB larvae are plant developmental stages since the beginning of pollen shedding to full blooming (63-67 BBCH scale). The efficacy of treatment was the highest at that time
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