Data/hora: 03/06/2024 09:45:28

Provedor de dados: | 1
País: | Brazil
Título: | Compatibility of polymers to fungi Beauveria bassiana and Metarhizium anisopliae and their formulated products stability
Autores: | Wenzel Rodrigues, Inajá Marchizeli; Batista Filho, Antonio; Giordano, Isabella Barichello; Denadae, Bárbara Evelin; Fernandes, João Batista; Forim, Moacir Rossi.
Data: | 2017-08-11
Ano: | 2017
Palavras-chave: | Microbial control; Formulations; Entomopathogens; Encapsulation; Shelf-life; Microbiology.
Resumo: | Stability during storage is a limiting factor in the development and use of bioinsecticides. This study aims to evaluate the compatibility of the entomopathogenic fungi Metarhizium anisopliae and Beauveria bassiana with components used in encapsulated formulations and to evaluate shelf-life in formulations with B. bassiana. Sodium alginate and maltodextrin, hemicellulose, and dimethyl sulfoxide solvents were evaluated. Compatibility was evaluated by mixing the components with PDA, and the parameters evaluated were vegetative growth, sporulation and viability. The formulations of fungi were prepared in various concentrations of sodium alginate and then added drop-wise to calcium chloride. To evaluate the stability, formulations were stored at 26.5, 4.0, and -20.0°C. Monthly, samples were taken, and the capsules were placed on Petri dishes with PDA to verify the growth after seven days of incubation. These evaluations were performed by the 12th month. Biopolymers evaluated were compatible with both fungi, exception maltodextrin at 1.5%, which was classified as moderately toxic to B. bassiana. Dimethyl sulfoxide was classified as moderately toxic to B. bassiana at 3.0% and to M. anisopliae at 2.0% and 3.0%. The formulations were stable throughout the 12 months in the conditions evaluated, while for the pure conidia of the fungus, 46% viability in the 6th month at 26.5°C was observed.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32903

10.4025/actasciagron.v39i4.32903

Editor: | Universidade Estadual de Maringá
Relação: | http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32903/pdf
Formato: | application/pdf

Fonte:

Acta Scientiarum. Agronomy; v. 39, n. 4 (2017); 457-464

Acta Scientiarum. Agronomy; v. 39, n. 4 (2017); 457-464

1807-8621

1679-9275

Fonte: | Direitos autorais 2017 Acta Scientiarum. Agronomy