Abstract
In this study, the entomopathogenic fungi; Beauveria bassiana, Isaria fumosorosea and Metarhizium anisopliae were evaluated against fourth nymphs and adults of the green shield bug, P. prasina. The experiment was conducted both under field and laboratory conditions. Isolates included six Beauveria bassiana, one Metarhizium anisopliae and one Isaria fumosorosea. Isolates were bioassayed against nymphs and adults in both under field and laboratory conditions. Four replications of the bioassays were analyzed and evaluated daily for 14 days. LT50 and LT95 values for the experimented isolates ranged from 4.19 to 7.11 days and from 6.68 to 11.30 days, respectively in laboratory for nymphs, ranged from 4.98 to 7.18 days and from 8.03 to 12.22 days, respectively in laboratory for adults. LT50 and LT95 values for the experimented isolates ranged from 6.69 to 10.70 days and from 10.29 to 17.91 days, respectively in field for nymphs, ranged from 7.29 to 10.70 days and from 11.23 to 17.91 days, respectively in field for adults. It was obvious that BB1/21b (Beauveria bassiana) was the most virulent on adults of P. prasina. As a result, while the effect of the isolates used in the study was high due to controlled conditions in the laboratory, it was low in field conditions.
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