Control of the pea weevil (Sitona lineatus L.) (Col., Curculionidae) by the entomopathogenic fungus Metarhizium anisopliae in field beans
1992
Verkleij, F.N. (Wageningen Univ. (Netherlands). Dept. of Ecological Agriculture) | Amelsvoort, P.A.M. van | Smits, P.H.
The efficacy of the entomopathogenic fungus Metarhizium anisopliae, formulated in granulates of dried mycelium, was tested in field beans infested by the pea weevil (Sitona lineatus L.) in greenhouse and in field experiments. The application of M. anisopliae did not significantly result in a reduction of the damage to the root nodules. Similarly, a significant effect on the mortality of S. lineatus was not found. In a separate study on a field bean site, 33 % of the plants sampled in the middle of the season contained larvae, pupae and adults with mycosis by a naturally occurring strain of M. anisopliae. Overall 10 % of the found insects showed mycosis. The results are discussed in relation to the formulation and differences in virulence between strains of M. anisopliae
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