Descubre y comparte nuestro conocimiento público

Se han encontrado 35 recursos

Resultados de búsqueda

Book 1985

Autor: Theberge, R.L. Caveness, F.E. Herren, H.R. Lema, K. Neuenschwander, P. Yaninek, John S.
Enlace original: https://cgspace.cgiar.org/handle/10568/98081

Investigación en Agricultura
Enlace permanente

Theberge, R.L. ,  Caveness, F.E. ,  Herren, H.R. ,  Lema, K. ,  Neuenschwander, P. ,  Yaninek, John S. ,  [Common African pests and diseases of cassava, yam, sweet potato and cocoyam] ,  Common African pests and diseases of cassava, yam, sweet potato and cocoyam
Journal Article 1993

Autor: Gutiérrez, A. Neuenschwander, P. Alphen, J. van

1. A unified ratio-dependent supply-demand driven tritrophic model of the cassava (Manihot esculenta Crantz) system was compared to field data, and then used to explore the basis for the successful control of cassava mealybug (CM, Phenacoccus manihoti Mat.-Ferr.) in Africa by the exotic parasitoi...

Enlace original: https://cgspace.cgiar.org/handle/10568/98623

Investigación en Agricultura
Enlace permanente
Gutiérrez, A. ,  Neuenschwander, P. ,  Alphen, J. van ,  [Factors affecting biological control of cassava mealybug by exotic parasitoids: a ratio dependent supply demand driven model] ,  Factors affecting biological control of cassava mealybug by exotic parasitoids: a ratio dependent supply demand driven model
Journal Article 1997

Autor: Staubli Dreyer, B. Baumgaertner, J.U. Neuenschwander, P. Dorn, S.
Enlace original: https://cgspace.cgiar.org/handle/10568/103837

Investigación en Agricultura
Enlace permanente
Staubli Dreyer, B. ,  Baumgaertner, J.U. ,  Neuenschwander, P. ,  Dorn, S. ,  [The functional responses of two Hyperaspis notat strains to their prey, the cassava mealybug Phenacoccus manihoti] ,  The functional responses of two Hyperaspis notat strains to their prey, the cassava mealybug Phenacoccus manihoti
Journal Article 1997

Autor: Schulthess, F. Neuenschwander, P. Gounou, S.

The effect of fertilizer and mulch across tropic level of the cassava ecosystem, i.e. the plant, the cassava mealybug(CM), the wasp Apoanagyrus lopezi and its hyperparasitoids, was studied in two field experiments planted ins southern Benin. Several cassava cultivars with different branching patt...

Enlace original: https://cgspace.cgiar.org/handle/10568/98647

Investigación en Agricultura
Enlace permanente

Schulthess, F. ,  Neuenschwander, P. ,  Gounou, S. ,  [Multitrophic interactions in cassava, Manihot esculenta, cropping systems in the subhumid tropics of West Africa] ,  Multitrophic interactions in cassava, Manihot esculenta, cropping systems in the subhumid tropics of West Africa
Journal Article 1990

Autor: Neuenschwander, P. Hammond, W. Ajuonu, O. Gado, A. Echendu, N. Bokonon-Ganta, A.H. Allomasso, R. Okon, I.

Population data concerning the cassava mealybug (CM) Phenacoccus manihoti Matile-Ferrero, the introduced parasitoid Epidinocarsis lopezi (De Santis), and indigenous antagonists were collected, together with ecological and plant growth variables, during a survey of 414 fields covering all ecologic...

Enlace original: https://cgspace.cgiar.org/handle/10568/98695

Investigación en Agricultura
Enlace permanente
Neuenschwander, P. ,  Hammond, W. ,  Ajuonu, O. ,  Gado, A. ,  Echendu, N. ,  Bokonon-Ganta, A.H. ,  Allomasso, R. ,  Okon, I. ,  [Biological control of the cassava mealybug, Phenacoccus manihoti (Hom., Pseudococcidae) by Epidinocarsis lopezi (Hym., Encyrtidae) in West Africa, as influenced by climate and soil] ,  Biological control of the cassava mealybug, Phenacoccus manihoti (Hom., Pseudococcidae) by Epidinocarsis lopezi (Hym., Encyrtidae) in West Africa, as influenced by climate and soil
Journal Article 2001-07

Autor: Neuenschwander, P.

Among several natural enemies introduced to combat the cassava mealybug, Phenacoccus manihoti (Homoptera: Pseudococcidae), the neotropical parasitoid Apoanagyrus (Epidinocarsis) lopezi (Hymenoptera: Encyrtidae) was the most successful. It established in 26 African countries, causing a satisfactor...

Enlace original: https://cgspace.cgiar.org/handle/10568/103409

Investigación en Agricultura
Enlace permanente
Neuenschwander, P. ,  [Biological control of the cassava mealybug in Africa: a review] ,  Biological control of the cassava mealybug in Africa: a review
Journal Article 1993

Autor: Cudjoe, A. Neuenschwander, P. Copland, M.

In surveys of cassava fields in the coastal savanna and rain forest zones of Ghana, eight species of ants, mostly in the genera Camponotus, Crematogaster and Pheidole (Hymenoptera: Formicidae), were found attending cassava mealybug, Phenacoccus manihoti Matile-Ferrero. Ant densities were much hig...

Enlace original: https://cgspace.cgiar.org/handle/10568/98669

Investigación en Agricultura
Enlace permanente
Cudjoe, A. ,  Neuenschwander, P. ,  Copland, M. ,  [Interference by ants in biological control of the cassava mealybug Phenacoccus manihoti (Hemiptera: Pseudococcidae) in Ghana] ,  Interference by ants in biological control of the cassava mealybug Phenacoccus manihoti (Hemiptera: Pseudococcidae) in Ghana
Journal Article 1997

Autor: Staubli Dreyer, B. Neuenschwander, P. Baumgaertner, J.U. Dorn, S.

The coccinellid, Hyperaspis notata Mulsant, is associated with the mealybugs Phenacoccus manihoti Mat.‐Ferr. and P. herreni Williams, on cassava in southern Brazil and the highlands of Colombia. Brought to Africa to help control the accidentally introduced P. manihoti, its range of target prey an...

Enlace original: https://cgspace.cgiar.org/handle/10568/98698

Investigación en Agricultura
Enlace permanente
Staubli Dreyer, B. ,  Neuenschwander, P. ,  Baumgaertner, J.U. ,  Dorn, S. ,  [Trophic influences on survival, development and reproduction of Hyperaspis notata (Col., Coccinellidae)] ,  Trophic influences on survival, development and reproduction of Hyperaspis notata (Col., Coccinellidae)
Journal Article 2003

Autor: Dixon, Alfred G.O. Bandyopadhyay, Ranajit Coyne, D.L. Ferguson, M. Ferris, R.S.B. Hanna, R. Hughes, J. Ingelbrecht, I. Legg, J.P. Mahungu, N.M. Manyong, Victor M. Mowbray, D. Neuenschwander, P. Whyte, J. Hartmann, P. Ortiz, R.

Cassava(Manihot esculenta), a root crop originating in Tropical America, has been called Africa’s food insurance but vital as that is, it has the potential to be much more. Already, cassava provides more than half of the dietary calories for over 200 million people in sub-Saharan Africa (about ha...

Enlace original: https://cgspace.cgiar.org/handle/10568/96342

Investigación en Agricultura
Enlace permanente
Dixon, Alfred G.O. ,  Bandyopadhyay, Ranajit ,  Coyne, D.L. ,  Ferguson, M. ,  Ferris, R.S.B. ,  Hanna, R. ,  Hughes, J. ,  Ingelbrecht, I. ,  Legg, J.P. ,  Mahungu, N.M. ,  Manyong, Victor M. ,  Mowbray, D. ,  Neuenschwander, P. ,  Whyte, J. ,  Hartmann, P. ,  Ortiz, R. ,  [Cassava: from poor farmers crop to pacesetter of African rural development] ,  Cassava: from poor farmers crop to pacesetter of African rural development
Journal Article 1992

Autor: Goergen, Georg E. Neuenschwander, P.

Different combinations of insects belonging to three trophic levels were released in large cages with hydroponie cultures of cassava in a greenhouse. The cassava mealybug (CM )' Phenacoccus manihoti Matile-Ferrero (Horn., Pseudococcidae) was applied at two initial infestation densities to cassava...

Enlace original: https://cgspace.cgiar.org/handle/10568/99912

Investigación en Agricultura
Enlace permanente
Goergen, Georg E. ,  Neuenschwander, P. ,  [A cage experiment with four trophic levels: cassava plant growth as influenced by cassava mealybud, Phenacoccus manihoti, its parasitoid Epidinocarsis lopezi,and the hyperparasitoids Prochiloneurus insolitus and Chartocerus hyalipennis] ,  A cage experiment with four trophic levels: cassava plant growth as influenced by cassava mealybud, Phenacoccus manihoti, its parasitoid Epidinocarsis lopezi,and the hyperparasitoids Prochiloneurus insolitus and Chartocerus hyalipennis

Selecciona los documentos para visualizarlos

Nombre del archivo Ver recurso
Marcar todos
Limpiar todo