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Conference Paper 2007

Autor: Tindo, M. Hanna, R. Wijnans, L. Nolte, C. Goergen, Georg E. Nguekam, A. Ngeve, J.M.

The African root and tuber scale (ARTS) Stictococcus vayssierei Richard is a subterranean insect originally infesting several native plant species in the forest zones of Central Africa. With help of the native ant Anoplolepis tenella Santchi, ARTS has recently emerged as a major constraint to cas...

Enlace original: https://cgspace.cgiar.org/handle/10568/90603

Investigación en Agricultura
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Tindo, M. ,  Hanna, R. ,  Wijnans, L. ,  Nolte, C. ,  Goergen, Georg E. ,  Nguekam, A. ,  Ngeve, J.M. ,  [Pre-planting removal of host-plant residues to reduce African root and tuber scale infestations in cassava fields in Cameroon] ,  Pre-planting removal of host-plant residues to reduce African root and tuber scale infestations in cassava fields in Cameroon
Conference Paper 2007

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

A two year follow up of the African root and tuber scale (ARTS) population dynamics was conducted on two cassava cultivars, a sweet variety Lueki and a bitter variety Mvuama, in a highly infested site of secondary agro-ecological forest zone of Bas-Flueve District, in D.R. Congo. Both cultivars w...

Enlace original: https://cgspace.cgiar.org/handle/10568/90607

Investigación en Agricultura
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Tata-Hangy, K.W. ,  Hanna, R. ,  Toko, M. ,  Lema, K.M. ,  Solo, M. ,  [Changes in population abundance of the African root and tuber scale stictococcus vayssierei Richard (hornoptera; stictococcidae) on cassava in the bas-fleuve district in the democratic Republic of Congo] ,  Changes in population abundance of the African root and tuber scale stictococcus vayssierei Richard (hornoptera; stictococcidae) on cassava in the bas-fleuve district in the democratic Republic of Congo
Conference Paper 2007

Autor: Pallangyo, B. Hanna, R. Toko, M. Gnanvossou, D. Mgoo, V. Otema, M. Onzo, A. Hountondji, F.C.C. Nsami, E. Mfugale, O.

The cassava green mite Mononychellus tanajoa (Bondar) (Acari: Tetranychidae) is one of the most important pests of cassava, a main staple food crop in Tanzania. The International Institute of Tropical Agriculture (ETA) in collaboration with the Tanzania National Biological Control P r o m (NBCP) ...

Enlace original: https://cgspace.cgiar.org/handle/10568/90608

Investigación en Agricultura
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Pallangyo, B. ,  Hanna, R. ,  Toko, M. ,  Gnanvossou, D. ,  Mgoo, V. ,  Otema, M. ,  Onzo, A. ,  Hountondji, F.C.C. ,  Nsami, E. ,  Mfugale, O. ,  [Biological control of cassava green mite in Tanzania] ,  Biological control of cassava green mite in Tanzania
Journal Article 2010

Autor: Christine, Z. Richard, C. Urs, S. Peter, N. Hanna, R.

Cassava is one of the most important staple food crops in Africa and has recently been gaining importance asa cash crop for smallholder farmers. The dynamics of the system requires new cultivars. The broad objectivesof the present study were (a) to specify the need for new cassava varieties; (b) ...

Enlace original: https://cgspace.cgiar.org/handle/10568/90328

Investigación en Agricultura
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Christine, Z. ,  Richard, C. ,  Urs, S. ,  Peter, N. ,  Hanna, R. ,  [Developing cassava cultivars based on farmers needs and on the agroecological conditions of northwestern Cameroon] ,  Developing cassava cultivars based on farmers needs and on the agroecological conditions of northwestern Cameroon
Journal Article 2009

Autor: Agboton, B.V. Hanna, R. Hountondji, F.C.C. Tiedemann, A. von

Neozygites tanajoaeis a host-specific acaropathogen introduced in the late1990s from Brazil into cassava fields in West Africa for biocontrol ofthe cassava green mite (Mononychellus tanajoa). Local African isolates ofN. tanajoaeare morphologically similar to introduced Brazilian strainsbut the ...

Enlace original: https://cgspace.cgiar.org/handle/10568/90165

Investigación en Agricultura
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Agboton, B.V. ,  Hanna, R. ,  Hountondji, F.C.C. ,  Tiedemann, A. von ,  [Pathogenicity and host specificity of Brazilian and African isolates of the acaropathogenic fungus Neozygites tanajoae to mite species associated with cassava] ,  Pathogenicity and host specificity of Brazilian and African isolates of the acaropathogenic fungus Neozygites tanajoae to mite species associated with cassava
Journal Article 2017-11

Autor: Ngatat, S. Hanna, R. Kumar, P.L. Gray, S.M. Cilia, M. Ghogomu, R.T. Fontem, D.A.

Banana bunchy top disease (BBTD) is a serious threat to banana and plantain (Musa spp.) production. BBTD is caused by the Banana bunchy top virus (BBTV, genus Babuvirus) which is spread through infected plant propagules and banana aphid, Pentalonia nigronervosa. A high level of resistance to BBTD...

Enlace original: https://cgspace.cgiar.org/handle/10568/83214

Investigación en Agricultura
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Ngatat, S. ,  Hanna, R. ,  Kumar, P.L. ,  Gray, S.M. ,  Cilia, M. ,  Ghogomu, R.T. ,  Fontem, D.A. ,  [Relative susceptibility of Musa genotypes to banana bunchy top disease in Cameroon and implication for disease management] ,  Relative susceptibility of Musa genotypes to banana bunchy top disease in Cameroon and implication for disease management
Journal Article 2017-10

Autor: Singh, A. Weisser, W.W. Hanna, R. Houmgny, R. Zytynska, S.E.

BACKGROUND Intercropping can help reduce insect pest populations. However, the results of intercropping can be pest- and crop-species specific, with varying effects on crop yield, and pest suppression success. In Cameroon, okra vegetable is often grown in intercropped fields and sown with large ...

Enlace original: https://cgspace.cgiar.org/handle/10568/83469

Investigación en Agricultura
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Singh, A. ,  Weisser, W.W. ,  Hanna, R. ,  Houmgny, R. ,  Zytynska, S.E. ,  [Reduce pests, enhance production: benefits of intercropping at high densities for okra farmers in Cameroon] ,  Reduce pests, enhance production: benefits of intercropping at high densities for okra farmers in Cameroon
Journal Article 2013-06

Autor: Agboton, B. Hanna, R. Onzo, A. Vidal, S. Tiedemann, A. von

The predatory mite Typhlodromalus aripo and the entomopathogenic fungus Neozygites tanajoae, both introduced from Brazil for control of the cassava green mite (CGM) Mononychellus tanajoa, now co-occur in cassava fields in Benin. However, studies on interactions between these two natural enemies a...

Enlace original: https://cgspace.cgiar.org/handle/10568/76416

Investigación en Agricultura
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Agboton, B. ,  Hanna, R. ,  Onzo, A. ,  Vidal, S. ,  Tiedemann, A. von ,  [Interactions between the predatory mite Typhlodromalus aripo and the entomopathogenic fungus Neozygites tanajoae and consequences for the suppression of their shared prey/host Mononychellus tanajoa] ,  Interactions between the predatory mite Typhlodromalus aripo and the entomopathogenic fungus Neozygites tanajoae and consequences for the suppression of their shared prey/host Mononychellus tanajoa
Journal Article 2013

Autor: Bothon, F. Gnanvossou, D. Noudogbessi, J. Hanna, R. Sohounhloue, D.

GC/MS analysis of essential oils extracted from four Cymbopogon species revealed that the majors compounds were trans-p-mentha-1(7),8-dien-2-ol (21.9%), cis-p-mentha-1(7),8-den- 2-ol (19.4%), trans-p-mentha-2,8-dien-1-ol (9.6%), cis-p-mentha-2,8-dien-1-ol (7.2%), cis-pmenth-2-en-1-ol (7.2%), limo...

Enlace original: https://cgspace.cgiar.org/handle/10568/76409

Investigación en Agricultura
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Bothon, F. ,  Gnanvossou, D. ,  Noudogbessi, J. ,  Hanna, R. ,  Sohounhloue, D. ,  [Bactrocera Cucurbitae response to four Cymbopogon species essential oils] ,  Bactrocera Cucurbitae response to four Cymbopogon species essential oils
Journal Article 2012-01

Autor: Onzo, A. Houedokoho, A. Hanna, R.

In Benin, the tarsonemid mite Polyphagotarsonemus latus (Banks) (Prostigmata: Tarsonemidae) is a key pest of gboma eggplant Solanum macrocarpon (L.) (Solanales: Solanaceae), a leafy vegetable on which it causes considerable damage to the plants and substantial reduction in yield. Predatory mites ...

Enlace original: https://cgspace.cgiar.org/handle/10568/77420

Investigación en Agricultura
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Onzo, A. ,  Houedokoho, A. ,  Hanna, R. ,  [Potential of the predatory mite, Amblyseius swirskii to suppress the broad mite, Polyphagotarsonemus latus on the gboma eggplant, Solanum macrocarpon] ,  Potential of the predatory mite, Amblyseius swirskii to suppress the broad mite, Polyphagotarsonemus latus on the gboma eggplant, Solanum macrocarpon

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