Abstract
Infection of adult chinch bugs, Blissus leucopterus leucopterus, from Beauveria bassiana conidia contained in soil was investigated in the laboratory under controlled temperature and moisture conditions. Chinch bug infection was related positively to the concentration of B. bassiana in soil. Soil moisture did not significantly affect the initiation of infections at 20°C, but at 30°C, a proportionately greater percentage of chinch bugs became infected when exposed to drier soils. Mortality of infected chinch bugs occurred the fastest among bugs that had been exposed to the combination of high temperature and high soil moisture. The survival of B. bassiana conidia in soil was affected adversely by increasing soil temperature and moisture.
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