Mortality of nymph of Nezara viridula L. affected of entomophatogen fungus Beauveria bassiana Vuill. in various concentration levels
1999
Sapdi (Universitas Syiah Kuala Darussalam, Banda Aceh (Indonesia). Fakultas Pertanian)
The objectives of this research is to study the pathogenicity and possibility of using the fungus B. bassiana Vuill. to control N. viridula L. Completely Randomized Design (CRD) with five treatments and four replications was set up in this research. The treatments were the concentration levels of 0, 1, 5, 10, and 15 g/1 aquadest. The variables observed were the mortality and dying time of N. viridula L. nymph. The results showed that concentration levels influenced mortality and dying time. The higher concentration on B. bassiana Vuill., the more pathogen it was. However, of the five treatments studied, the concentrations of 10 and 15 g/l caused the same dying time. It was also concluded, the result studied in the laboratory showed that concentration levels of 10 and 15 g/l could cause the nymph mortality 60-100 percent. This fact indicated that B. bassiana Vuill. is possible to use in controlling N. viridula L. However, research in detail about its pathogenicity on various levels of growth of N. viridula L. and field application is necessary to conduct
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