Main Article Content

Authors

Experiments carried out to study the effect of the entomopathogenic fungi Beauveria bassiana (isolate Bb9205) and Metarhizium anisopliae (isolate Ma9101) on Cephalono­mia stephanoderis, a parasitoid of the coffee berry borer, Hypothenemus hampei, under laboratory conditions (R.H.=90%; T=23.4 ± 1°C) demonstrated that both fungi (10' conidia/ ml) applied directly killed 48% and 40% of parasitoids respectively. In subsequent field trials, in the Experimental Station "La Catalina" (1,340 mas!; T=21.9°C; R.H.= 80.9%), coffee branches, previously infested artificially into entomological sleeves, were sprayed with the fungi (7.9 x 109conidia/tree) according to the following treatments: 21, 14, 7 and O days before parasitoid release, and 2, 4, and 7 days after parasitoid release. The highest mortality (24% B. bassiana, 5% M. anisopliae) occurred when the fungi were sprayed on the same day that parasitoids were released. In all other treatments, the mortal­ity was less than 7% and was not significantly different from the control. Results indicate than the fungi are compatible with the adult parasitoid and can be used in an IPM pro­gramme though fungal sprays should not be carried out shortly before or after parasitoid release.

REYES-ARISTIZÁBAL, I. C., BUSTILLO-PARDEY, A. E., & CHAVES-CÓRDOBA, B. (1995). Effect of Beauveria bassiana and Metarhizium anisopliae on the coffee berry borer parasitoid Cephalonomia stephanoderis. Revista Colombiana De Entomología, 21(4), 199–204. https://doi.org/10.25100/socolen.v21i4.9985