Biocontrol Science and Technology (1998) 8, 345-355

B. Odongo, M.O. Odindo, M. Brownbridge and R. Kumar (1998)
Comparative biological efficacy of Hirsutella thompsonii and Neoseiulus teke for cassava mite (Mononychellus tanajoa) suppression
Biocontrol Science and Technology 8 (3), 345-355
Abstract: The biological control potential of Hirsutella thompsonii Fisher (Deuteromycetes: Monilianes) was compared with that of Neoseiulus teke Pritchard and Baker (Acari: Phytoseiidae) for cassava mite, Mononychellus tanajoa (Acari:Tetranychidae), suppression. Mite infestation levels (egg and mite motile counts and damage rating) were lower on H. thompsonii- and N. teke- treated plants than on plants sprayed with water. N. teke reduced the pest attack to a comparable level to that of H. thompsonii. In the field, applications of aqueous suspensions of H. thompsonii at concentrations of 1.2 1011 conidia/ha (CPH) and 6.0 1010 CPH significantly lowered mite infestation on a number of recording dates. As rainfall levels increased, mite infestation and the number of cadavers on the leaves declined. The study showed that H. thompsonii has promise for controlling M. tanajoa when the fungus is applied in harmony with other natural mortality factors.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Michael Brownbridge

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Mononychellus tanajoa	Cassava (Manihot esculenta)
Hirsutella thompsonii (entomopathogen)	Mononychellus tanajoa	Cassava (Manihot esculenta)
Neoseiulus teke (predator)	Mononychellus tanajoa	Cassava (Manihot esculenta)