Aplicacao de conídios de Beauveria bassiana (Bals.) Vuill. e metarhizium anisopliae (Metsch.) sor. para controle de larvas de Chalcodermus bimaculatus Boh. (Coleptera:Curculionidae) no solo.

• Autor(a) principal: QUINTELA, E. D.
• Data de Publicação: 1994
• Outros Autores: WRAIGHT, S. P., QUINDERÉ, M. A. W., ROBERTS, D. W.
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
• Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/205741
• topic: Controle Biológico; Solo; Metarhizium Anisopliae; Chalcodermus bimaculatus; Insecta; conidia

The effect of soil treatment with Beauveria bassiana (Bals.) Vuill. and Metarhizium anisopliae (Metsch.) Sor. conidia on Chalcodermus bimaculatus Boh. larvae was evaluated in cowpea (Vigna unguiculata L. Walp). In Santo Antônio de Goiás, Brazil, it was observed that both fungi reached an average control of 50% after liberation of larvae at different days in treated soil. In Quixadá, Ceará, the average control was approximately 30% for both fungi. In Caucaia, Ceará, the fungus M. anisoplae induced 46% mortality at the application date and 27.4% after 10 days. Results indicated that the fungi consistently provided 30-50% control of C. bimaculatus. Evaluation of fungi persistence in the soil indicated that this level of control was achieved through a single application.