The introduction of Typhlodromalus limonicus (Garman & McGregor) sensu lato is a major component of an on-going biological control campaign against the exotic cassava pest Mononychellus tanajoa (Bondar) in Africa. However, long-term establishment of this exotic phytoseiid predator has not yet bee...
Rogg, H.W.
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Yaninek, John S.
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[Population dynamics of Typhlodromalus limonicus from Colombia, an introduced predator of the exotic cassava green mite in West Africa]
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Population dynamics of Typhlodromalus limonicus from Colombia, an introduced predator of the exotic cassava green mite in West Africa
During part of the dry season in 1996 (November to December), surveys were made for incidence of root and stem rot in 99 fields of cassava (Manihot esculenta Crantz) randomly selected between latitudes 6°36′N and 7°49′N in Benin (79 fields) and Nigeria (20 fields). Root rot was observed in 65 fie...
Msikita, W.
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Yaninek, John S.
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Ahounou, M.
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Baimey, H.
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Fagbemissi, R.
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[First report of Nattrassia mangiferae root and stem rot of cassava in West Africa]
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First report of Nattrassia mangiferae root and stem rot of cassava in West Africa
The fungus, Neozygitis cf. floridana is parasitic on the cassava green mite, Mononychellus tanajoa (Bondar) (Acari: Tetranychidae) in South America and may be considered for classical biological control of cassava green mites in Africa, where cassava is an important subsistence crop, cassava gree...
Oduor, G.
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Sabelis, M.
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Lingeman, R.
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Moraes , G.J. de
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Yaninek, John S.
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[Modelling fungal (Neozygites cf. floridana) epizootics in local populations of cassava green mites (Mononychellus tanajoa)]
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Modelling fungal (Neozygites cf. floridana) epizootics in local populations of cassava green mites (Mononychellus tanajoa)
(1) The effects of the cassava mealybug, Phenacoccus manihoti Mat.-Ferr., on cassava, Manihot esculenta Crantz, growth, development and yields as modified by weather, soil water and nitrogen, and natural enemies were examined. (2) Rainfall-induced mortality and plant carbohydrate stress were the...
Gutiérrez, A.P.
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Yaninek, John S.
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Wermelinger, B.
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Herren, H.R.
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Ellis, C.K.
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[Analysis of biological control of cassava pests in Africa: III. Cassava green mite Mononychellus tanajoa]
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Analysis of biological control of cassava pests in Africa: III. Cassava green mite Mononychellus tanajoa
( 1 ) A model for the growth and development of cassava, Manihot esculenta Crantz, as modified by weather, soil nitrogen and water is described, and used in later papers to evaluate damage by exotic cassava pests and the effectiveness of control by natural. (2) Analogous relationships between t...
Gutiérrez, A.P.
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Wermelinger, B.
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Schulthess, F.
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Baumgaertner, J.U.
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Herren, H.R.
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Ellis, C.K.
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Yaninek, John S.
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[Analysis of biological control of cassava pests in Africa: I. Simulation of carbon, nitrogen and water dynamics in cassava]
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Analysis of biological control of cassava pests in Africa: I. Simulation of carbon, nitrogen and water dynamics in cassava
Integrating the management of cassava pests into a strategy which meets the needs of individual farmers requires a conceptual framework for development and implementation. The Ecologically Sustainable Cassava Plant Protection (ESCaPP) project which began in 1993 in West Africa provides such a wor...
Yaninek, John S.
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James, B.
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Bieler, P.
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[Ecologically sustainable cassava plant protection (ESCaPP): a model for environmentally sound pest management in Africa]
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Ecologically sustainable cassava plant protection (ESCaPP): a model for environmentally sound pest management in Africa
The survival of Neozygites cf. floridana (Weiser and Muma) as dry hyphal bodies in mummified cassava green mites, Mononychellus tanajoa (Bondar), at 5.0% RH in the dark was affected by storage temperature. Survival of the fungus in mummies kept at 24 + 1.0°C could be demonstrated for 6-7 months. ...
Oduor, G.
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Yaninek, John S.
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Geest, L. van der
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Moraes , G.J. de
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[Survival of Neozygites cf. floridana (Zygomycetes: entomophthorales) in mummified cassava green mites and the viability of its primary conidia]
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Survival of Neozygites cf. floridana (Zygomycetes: entomophthorales) in mummified cassava green mites and the viability of its primary conidia
This is the eighth publication of a series on the determination of phytoseiid mites of sub-Saharan Africa. Twenty-three phytoseiid species of the tribe Paraseiulini Wainstein are reported in this paper. They refer to all species of this tribe known to occur in sub-Saharan Africa. Six of these spe...
Moraes, G.
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Zannou, I.
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Ueckermann, E.A.
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Oliveira, A.
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Hanna, R.
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Yaninek, John S.
,
[Phytoseiid mites of the tribe Paraseiulini Wainstein (Acari: Phytoseiidae) from subSaharan Africa]
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Phytoseiid mites of the tribe Paraseiulini Wainstein (Acari: Phytoseiidae) from subSaharan Africa
Thirty phytoseiid mite species of the genus Neoseiulus Hughes are reported from sub-Saharan Africa. Ten of these species are described for the first time and 14 nominal species are redescribed. Most of the species were collected from cassava groves in tropical Africa and from other habitats in So...
Zannou, I.
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Moraes, G.J. de
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Ueckermann, E.A.
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Oliveira, A.
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Yaninek, John S.
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Hanna, R.
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[Phytoseiid mites of the genus Neoseiulus hughes (Acari: Phytoseiidae) from subSaharan Africa]
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Phytoseiid mites of the genus Neoseiulus hughes (Acari: Phytoseiidae) from subSaharan Africa
Twenty-four phytoseiid species of the subtribe Typhlodromalina Chant & McMurtry are reported in this paper. They refer to all species of this subtribe now known to occur in sub-Saharan Africa, and they belong to the general Amblydromalus Chant & McMurtry (5 species), Prasadromalus Chant & McMurtr...
Moraes, G.D.
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Zannou, I.D.
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Oliveira, A.R.
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Yaninek, John S.
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Hanna, R.
,
[Phytoseiid mites of the subtribes Typhlodromalina and Euseiina (Acari: Phytoseiidae: Euseiini) from subSaharan Africa]
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Phytoseiid mites of the subtribes Typhlodromalina and Euseiina (Acari: Phytoseiidae: Euseiini) from subSaharan Africa