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Journal Article 2007-05

Autor: Zannou, I.D. Hanna, R. Agboton, B. Moraes, G.J. de Kreiter, S. Phiri, G. Jone, A.

The need to evaluate non-target effects of classical biological control of arthropod pests has received considerable attention in recent years. We determined with repeated field surveys the changes in abundance and distribution of the phytoseiid mite fauna in cassava fields resulting from the int...

Enlace original: https://cgspace.cgiar.org/handle/10568/93024

Investigación en Agricultura
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Zannou, I.D. ,  Hanna, R. ,  Agboton, B. ,  Moraes, G.J. de ,  Kreiter, S. ,  Phiri, G. ,  Jone, A. ,  [Native phytoseiid mites as indicators of non-target eVects of the introduction of Typhlodromalus aripo for the biological control of cassava green mite in Africa] ,  Native phytoseiid mites as indicators of non-target eVects of the introduction of Typhlodromalus aripo for the biological control of cassava green mite in Africa
Journal Article 2007-02

Autor: Zundel, C. Hanna, R. Scheidegger, Urs C. Nagel, P.

The establishment of the neotropical predatory mite Typhlodromalus aripo in sub-Saharan Africa has resulted in broadly successful biological control of the cassava green mite Mononychellus tanajoa throughout the cassava belt of Africa. In some mid-altitude areas and drier lowland savannahs of sub...

Enlace original: https://cgspace.cgiar.org/handle/10568/92375

Investigación en Agricultura
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Zundel, C. ,  Hanna, R. ,  Scheidegger, Urs C. ,  Nagel, P. ,  [Living at the threshold: where does the neotropical phytoseiid mite Typhlodromalus aripo survive the dry season?] ,  Living at the threshold: where does the neotropical phytoseiid mite Typhlodromalus aripo survive the dry season?
Conference Paper 2007

Autor: Kariuki, C.W. Hanna, R. Toko, M. Ngari, B.M.

Cassava green mite, Mononychellus tanajoa (Bondar) has been a major pest of cassava since its accidental introduction in Africa. Studies conducted recently on its biological control in the major cassava growing areas in Kenya demonstrate definite establishment of Typhlodromalus aripo in Kenya. Th...

Enlace original: https://cgspace.cgiar.org/handle/10568/90610

Investigación en Agricultura
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Kariuki, C.W. ,  Hanna, R. ,  Toko, M. ,  Ngari, B.M. ,  [The spread and persistence of exotic phytoseiid, typhlodromahs aripo de leon (acari: phytoseiidae) and its effect on cassava green mite in Kenya] ,  The spread and persistence of exotic phytoseiid, typhlodromahs aripo de leon (acari: phytoseiidae) and its effect on cassava green mite in Kenya
Conference Paper 2007

Autor: Tata-Hangy, K.W. Legg, J.P. Hanna, R. Toko, M. Lema, K.M. Dixon, A. Mahungu, N.M.

A countrywide survey on cassava constraints in D.R. Congo was initiated in 2002 and completed in 2004 with the aim of assessing the health status of cassava in various agro-ecological zones of the 11 provinces of the country. The survey permitted to update the list of diseases and pests that cont...

Enlace original: https://cgspace.cgiar.org/handle/10568/90614

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Tata-Hangy, K.W. ,  Legg, J.P. ,  Hanna, R. ,  Toko, M. ,  Lema, K.M. ,  Dixon, A. ,  Mahungu, N.M. ,  [Incidence and distribution of cassava diseases and pests in the Democratic Republic of Congo] ,  Incidence and distribution of cassava diseases and pests in the Democratic Republic of Congo
Conference Paper 2007

Autor: Gnanvossou, D. Hanna, R. Pallangyo, B. Toko, M. Nsami, E. Mfugale, O.

Two surveys were conducted in Tanzania in May- June 2003 and June-August 2004 to determine the incidence and severity of several cassava arthropod pests including cassava green mite, cassava mealybug, spiralling whitefly, Bemisia spp., cassava scale, red mite, Zonocerus elegans, and several speci...

Enlace original: https://cgspace.cgiar.org/handle/10568/90612

Investigación en Agricultura
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Gnanvossou, D. ,  Hanna, R. ,  Pallangyo, B. ,  Toko, M. ,  Nsami, E. ,  Mfugale, O. ,  [Distribution and abundance of cassava pests in Tanzania with a note on the spiralling whitefly] ,  Distribution and abundance of cassava pests in Tanzania with a note on the spiralling whitefly
Journal Article 2007

Autor: Ueckermann, E.A. Zannou, I.D. Moraes, G.J. de Oliveira, A.R. Hanna, R. Yaninek, John S.

This is the seventh publication in a series concerning the phytoseiid mites of sub-Saharan Africa. Sixteen phytoseiid species of the subfamily Phytoseiinae (Chantia: 1 species, Phytoseius: 13 species and Platyseiella: 2 species) are reported in this paper. They include all species of this subfami...

Enlace original: https://cgspace.cgiar.org/handle/10568/92831

Investigación en Agricultura
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Ueckermann, E.A. ,  Zannou, I.D. ,  Moraes, G.J. de ,  Oliveira, A.R. ,  Hanna, R. ,  Yaninek, John S. ,  [Phytoseiid mites of the subfamily Phytoseiinae (Acari: Phytoseiidae) from sub-Saharan Africa] ,  Phytoseiid mites of the subfamily Phytoseiinae (Acari: Phytoseiidae) from sub-Saharan Africa
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
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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 2004

Autor: Tata-Hangy, K. Hanna, R. Toko, M. Solo, M.

Typhlodromallus aripo, a predatory phytoseiid species of the cassava green mite Mononychellus tanajoa was introduced to the Democratic Republic of Congo in 1998. It established easily and spread quickly to other areas from the sites of first release. But its dispersal was constrained by intense c...

Enlace original: https://cgspace.cgiar.org/handle/10568/96404

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Tata-Hangy, K. ,  Hanna, R. ,  Toko, M. ,  Solo, M. ,  [Effect of cassava leaf harvesting on a cassava green mite predator in the Democratic Republic of Congo] ,  Effect of cassava leaf harvesting on a cassava green mite predator in the Democratic Republic of Congo
Journal Article 2013-12

Autor: Njukwe, E. Hanna, R. Kirscht, H. Araki, S.

To assess farmers’ perception and criteria for cassava variety preference prior to the dissemination of improved varieties in Cameroon, field visits were organized at the Mbalmayo research farm of International Institute of Tropical Agriculture (IITA ) during the vegetative and harvest periods, a...

Enlace original: https://cgspace.cgiar.org/handle/10568/76676

Investigación en Agricultura
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Njukwe, E. ,  Hanna, R. ,  Kirscht, H. ,  Araki, S. ,  [Farmers perception and criteria for cassava variety preference in Cameroon] ,  Farmers perception and criteria for cassava variety preference in Cameroon
Journal Article 2014

Autor: Njukwe, E. Hanna, R. Sarr, S. Shigeru, A. Kirscht, H. Mbairanodji, A. Ngue-Bissa, T. Tenkouano, A.

In order to understand product flows of cassava and actors along its value chain, a study was conducted in three out of the five antennas of National Program for Roots and Tuber Development (PNDRT); South and Centre, West and North West and East regions in Cameroon with the aid of structured ques...

Enlace original: https://cgspace.cgiar.org/handle/10568/76097

Investigación en Agricultura
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Njukwe, E. ,  Hanna, R. ,  Sarr, S. ,  Shigeru, A. ,  Kirscht, H. ,  Mbairanodji, A. ,  Ngue-Bissa, T. ,  Tenkouano, A. ,  [Cassava value chain development through partnership and stakeholders platform in Cameroon] ,  Cassava value chain development through partnership and stakeholders platform in Cameroon

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