Acessibilidade / Reportar erro

EFFICIENCY OF METARHIZIUM ANISOPLIAE (METSCH.) SOROKIN ON THE CONTROL OF DEOIS FLAVOPICTA (STAL., 1854), IN BRACHIARIA DECUMBENS PASTURE

ABSTRACT

This study was carried out to evalute the efficiency of the entomopathogenic fungiMetarhizium anisopliae (isolate IBCB 425) for control of spittlebug Deois flavopicta. The test was carried out under field conditions, in Brachiaria decumbens pasture, in Itatinga, São Paulo State, Brazil, from February to May 2006. Grain rice containing sporulated M. anisopliae was washed in water, strained and applied in 5 doses, after 17h, under average temperature and relative air humidity of 18º C and 69%, respectively, at the volume of 300 L ha-1. Evaluations were performed 14, 29 and 44 days after applications, counting the spittlebugs (nymphs) per 0.0625 m2 (0.25 m x 0.25 m square). The results showed thatM. anisopliae (IBCB 425), at doses of 16 x 1012 and 20 x 1012 viable conidias ha-1, is effective for the control of D. flavopicta, in B. decumbens pasture.

KEY WORDS
Spittlebug; entomopathogenic fungi; biological control; microbial control; integrated pest management

Instituto Biológico Av. Conselheiro Rodrigues Alves, 1252 - Vila Mariana - São Paulo - SP, 04014-002 - São Paulo - SP - Brazil
E-mail: arquivos@biologico.sp.gov.br