Seleção de isolados de Beauveria bassiana potenciais para o controle da traça-das-crucíferas

Abstract

Palavras-chave: Plutella xylostella, controle microbiano, fungo entomopatogênico, entomologia agrícola. ABSTRACT Selection of Beauveria bassiana isolates potential for diamondback moth controlDiamondback moth (DBM), Plutella xylostella (Lepidoptera: Plutellidae), is considered the most important pest of brassicas worldwide and the use of insecticides is the most used method to control this pest. Thus, the objective of this research was to select isolates of Beauveria bassiana with viability to control DBM. Seventeen isolates and one commercial product of B. bassiana were tested. DBM 2 nd instar larvae were treated with conidial suspension at concentration of 10 7 conidia mL -1 . For lethal concentration (LC) bioassay seven concentrations spaced on logarithmic scale were tested. The isolates CCA/UFES-4, 18, 31 and 35 were selected for LC bioassay because they caused over 90% confirmed mortality. The standard isolate ESALQ-447 and the commercial product had similar results and were also selected for LC bioassay. Based on the values estimated for LC 50 , the isolates CCA/UFES-4, 18, 31, ESALQ-447 and the commercial product can be selected for use in DBM control.

Compatibility of Beauveria bassiana and alternative phytosanitary products

“…In addition to APPs, entomopathogenic fungi are important for pest control, especially Beauveria bassiana (Balsamo -Crivelli) Vuilemin which is pathogenic to a variety of insects (Pires et al 2010;Potrich et al 2011;Rondelli et al 2012;Huang et al 2013;Alberto et al 2016;Toledo et al 2017).…”