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The cassava mealybug, Phenacoccus manihoti Mat.‐Ferr., spread in Zaire from foci at Kinshasa (1973), Mulandi (1978), and Goma (1982). It now occurs over an area of 560 000 km2, mainly in regions with a dry season of at least 90 days. Within these regions the pest occurs principally in areas havin...


Hennessey, R.D.Neuenschwander, P.Muaka, T.[Spread and current distribution of the cassava mealybug, Phenacoccus manihoti (Homoptera: Pseudococcidae), in Zaire]Spread and current distribution of the cassava mealybug, Phenacoccus manihoti (Homoptera: Pseudococcidae), in Zaire
Chikoye, D.Ekeleme, F.Hauser, S.Menkir, A.Kamara A.Y.Neuenschwander, P.Ajuonu, O.Ajeigbe, Hakeem A.[Weeds affecting field crops and water bodies in Africa]Weeds affecting field crops and water bodies in Africa
Neuenschwander, P.Tamo, M.Saethre, M.G.[Improving plant health in sub-Saharan Africa: conclusions and future challenges]Improving plant health in sub-Saharan Africa: conclusions and future challenges

(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.Neuenschwander, P.Schulthess, F.Herren, H.R.Baumgaertner, J.U.Wermelinger, B.Lohr, B.Ellis, C.K.[Analysis of the biological control of cassava pests in Africa: II. Cassava mealybug (Phenaccoccus manihoti)]Analysis of the biological control of cassava pests in Africa: II. Cassava mealybug (Phenaccoccus manihoti)
Alene, Arega D.Neuenschwander, P.Manyong, Victor M.Coulibaly O.Hanna, R.[The impact of IITA led biological control of major pests in sub-Saharan African agriculture: a synthesis of milestones and empirical results]The impact of IITA led biological control of major pests in sub-Saharan African agriculture: a synthesis of milestones and empirical results
Goergen, Georg E.Tamò, M.Kyofa-Boamah, M.E.Bokonon-Ganta, A.H.Neuenschwander, P.[Papaya mealybug: a new invading pest in West Africa]Papaya mealybug: a new invading pest in West Africa

Neuenschwander, P.Sinsin, B.Goergen, Georg E.[Nature conservation in West Africa: red list for Benin][Protection de la nature en Afrique de l’Ouest: une liste rouge pour le Bénin]Protection de la nature en Afrique de l’Ouest: une liste rouge pour le Bénin

During the Africa-wide Biological Control project, the neotropical parasitoid Epidinocarsis lopezi (De Santis) (Hymenoptera: Encyrtidae) was established in 26 African countries, causing a satisfactory reduction in the population density of the cassava mealybug Phenacoccus manihoti Mat.-Ferr. (Hom...


Neuenschwander, P.[Control of the cassava mealybug in Africa: lessons from a biological control project]Control of the cassava mealybug in Africa: lessons from a biological control project

The spiralling whitefly, Aleurodicus dispersus Russell (Hom., Aleyrodidae), a native of Central America, was found in continental Africa for the first time early in 1992, and has since spread to five West and Central African countries. It is a polyphagous pest which causes substantial damage also...


Neuenschwander, P.[Spiralling whitefly, Aleurodicus dispersus, a recent invader and new cassava pest]Spiralling whitefly, Aleurodicus dispersus, a recent invader and new cassava pest

Goergen, Georg E.Dupont, P.Neuenschwander, P.Tchibozo, S.Le Gall, P.[Insects][Insectes]Insectes

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