Abstract
A study on 12 entomopathogenic fungi for controlling broad mite (Polyphagotarsonemus latus (Banks)) in mulberry found that Metarhizium anisopliae CKM-048 was the most virulent strain in controlling both larvae and adult broad mites at the concentration of 2 × 108 conidia/ml. There was no ovicidal effect when tested with broad mite eggs. Median lethal concentrations (LC50) of M. anisopliae in killing larvae and adults were 8.7 × 106 and 1.3 × 107conidia/ml, respectively. Median lethal times (LT50) of larvae and adults were 2.4 and 3.8 days, respectively, at the concentration of 2 × 108 conidia/ml. The fungus was found to produce protease and chitinase. Scanning electron microscope (SEM) studies were done to monitor the infection steps of the fungus on broad mites. A greenhouse test on mulberry trees revealed that M. anisopliae could reduce the broad mite population within 4 days after treatment. However, after 7 days, its efficacy was decreased significantly.
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Maketon, M., Orosz-Coghlan, P., Sinprasert, J. (2008). Evaluation of Metarhizium anisopliae (Deuteromycota: Hyphomycetes) for control of broad mite Polyphagotarsonemus latus (Acari: Tarsonemidae) in mulberry. In: Bruin, J., van der Geest, L.P.S. (eds) Diseases of Mites and Ticks. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-9695-2_13
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DOI: https://doi.org/10.1007/978-1-4020-9695-2_13
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