Efficacy of native isolates of <em>Metarhizium</em> spp. in the control of the weevil (<em>Metamasius hemipterus</em>) of sugarcane in laboratory conditions

Abstract

The objective of this work was to evaluate the efficacy of four native isolates of Metarhizium spp., in the control of adults of Metamasius hemipterus in laboratory conditions. A completely randomized design with seven treatments and five repetitions was used. The treatments were the four native isolates (TI6301, TS6304, PS5002, PS5003; at a concentration of 1 x10 8 conidia.mL-1), Chemical (Engeo at a dose of 1mL.L-1 water), a commercial biological (Micosplag at a dose of 0.5 g.L-1 of water) and a control treatment with sterile distilled water. The treatments were applied by immersion. Mortality assessment was recorded at 5, 10, and 15 days after treatment application. Abbott's formula was used for the correction of mortality. To determine the