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Journal Article 2005-08

Autor: Hanna, R. Onzo, A. Lingeman, R. Yaninek, John S. Sabelis, M.W.

We applied time series analysis and a mechanistic predator-prey model to long-term data of monthly population counts of the herbivorous pest mite Mononychellus tanajoa and its introduced phytoseiid predator Typhlodromalus aripo from a cassava field in Benin, West Africa. In this approach, we dete...

Enlace original: https://cgspace.cgiar.org/handle/10568/95968

Investigación en Agricultura
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Hanna, R. ,  Onzo, A. ,  Lingeman, R. ,  Yaninek, John S. ,  Sabelis, M.W. ,  [Seasonal cycles and persistence in an acarine predator-prey system on cassava in Africa] ,  Seasonal cycles and persistence in an acarine predator-prey system on cassava in Africa
Journal Article 2019-04-08

Autor: Fotso Kuate, A. Hanna, R. Doumtsop Fotio, A.R.P. Abang, A.F. Nanga, S.N. Ngatat, S. Tindo, M. Masso, C. Ndemah, R. Suh, C. Fiaboe, K.K.M.

Maize farmers in sub-Saharan Africa recently experienced unusual damage in their farms, attributed to the fall armyworm (FAW) Spodoptera frugiperda (J. E. Smith). This pest was first recorded in Africa in 2016, but detailed information on its distribution and damage and farmer's response in invad...

Enlace original: https://cgspace.cgiar.org/handle/10568/101304

Investigación en Agricultura
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Fotso Kuate, A. ,  Hanna, R. ,  Doumtsop Fotio, A.R.P. ,  Abang, A.F. ,  Nanga, S.N. ,  Ngatat, S. ,  Tindo, M. ,  Masso, C. ,  Ndemah, R. ,  Suh, C. ,  Fiaboe, K.K.M. ,  [Spodoptera frugiperda Smith (Lepidoptera: Noctuidae) in Cameroon: case study on its distribution, damage, pesticide use, genetic differentiation and host plants] ,  Spodoptera frugiperda Smith (Lepidoptera: Noctuidae) in Cameroon: case study on its distribution, damage, pesticide use, genetic differentiation and host plants
Journal Article 2014-02

Autor: Abang, A.F. Kouamé, C.M. Abang, Mathew M. Hanna, R. Fotso, A.K.
Enlace original: https://cgspace.cgiar.org/handle/10568/72981

Investigación en Agricultura
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Abang, A.F. ,  Kouamé, C.M. ,  Abang, Mathew M. ,  Hanna, R. ,  Fotso, A.K. ,  [Assessing vegetable farmer knowledge of diseases and insect pests of vegetable and management practices under tropical conditions] ,  Assessing vegetable farmer knowledge of diseases and insect pests of vegetable and management practices under tropical conditions
Journal Article 2002

Autor: Gnanvossou, D. Hanna, R. Dicke, M.

Typhlodromalus manihoti and Typhlodromalus aripo are exotic predators of the cassava green mite Mononychellus tanajoa in Africa. In an earlier paper, we showed that the two predators were attracted to odors from M. tanajoa-infested cassava leaves. In addition to the key prey species, M. tanajoa, ...

Enlace original: https://cgspace.cgiar.org/handle/10568/99972

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Gnanvossou, D. ,  Hanna, R. ,  Dicke, M. ,  [Prey-related odor preference of the predatory mites Typhlodromalus manihoti and Typhlodromalus aripo (Acari: Phytoseiidae)] ,  Prey-related odor preference of the predatory mites Typhlodromalus manihoti and Typhlodromalus aripo (Acari: Phytoseiidae)
Journal Article 2016-05

Autor: Ndengo, N.E. Ki-Munseki, A.L. Hanna, R. Ngbolua, K.

Cassava is, economically, one of the most important root and tuber crops in Africa. However, its production is compromised by a large number of diseases and pests among which the african root and tuber scale (Stictococcus vayssierei Richard). This insect causes damage that can result in a low yie...

Enlace original: https://cgspace.cgiar.org/handle/10568/83204

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Ndengo, N.E. ,  Ki-Munseki, A.L. ,  Hanna, R. ,  Ngbolua, K. ,  [Screening cassava (Manihot esculenta CRANTZ) genotypes for resistance to African root and tuber scale (Stictococcus vayssierei Richard) in differents Agro-ecological zones of Beni (North Kivu, DR Congo)] ,  [Criblage de génotypes de manioc (Manihot esculenta CRANTZ) pour la résistance à la cochenille Africaine de racines et tubercules (Stictococcus vayssierei Richard) dans différentes zones agro-écologiques de Beni (Nord Kivu, RD Congo)] ,  Criblage de génotypes de manioc (Manihot esculenta CRANTZ) pour la résistance à la cochenille Africaine de racines et tubercules (Stictococcus vayssierei Richard) dans différentes zones agro-écologiques de Beni (Nord Kivu, RD Congo)
Journal Article 2003-11

Autor: Onzo, A. Hanna, R. Sabelis, M.

To determine the impact of an acarine predator guild on the abundance of a shared herbivorous prey and its principal exotic predator, a series of surveys were conducted in ca. 200 cassava fields in swamp and non-swamp areas in southwestern Benin, West Africa. For each field, the surveys provided ...

Enlace original: https://cgspace.cgiar.org/handle/10568/96357

Investigación en Agricultura
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Onzo, A. ,  Hanna, R. ,  Sabelis, M. ,  [Interactions in an acarine predator guild: impact on Typhlodromalus aripo abundance and biological control of cassava green mite in Benin, West Africa] ,  Interactions in an acarine predator guild: impact on Typhlodromalus aripo abundance and biological control of cassava green mite in Benin, West Africa
Journal Article 2017-09-09

Autor: Manju, E.B. Fokunang, C.N. Mbong, G.A. Tima, T.S. Suh, C. Tembe-Fokunang, E.A. Hanna, R.

The study was conducted in the research field sites of the Institute of Agricultural Research (IRAD), Bambui, North West Region, (IRAD), Ekona South West Region and the International Institute of Tropical Agriculture (IITA) Nkolbisson, Yaoundé, Center Region of Cameroon. Four cultivars of taro (D...

Enlace original: https://cgspace.cgiar.org/handle/10568/87989

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Manju, E.B. ,  Fokunang, C.N. ,  Mbong, G.A. ,  Tima, T.S. ,  Suh, C. ,  Tembe-Fokunang, E.A. ,  Hanna, R. ,  [Impact of fungicide application on taro leaf blight disease in three regions of Cameroon] ,  Impact of fungicide application on taro leaf blight disease in three regions of Cameroon
Journal Article 2006

Autor: Tata-Hangy, K.W. Lema, K. Ndambi, N. Lutete, D. Hanna, R. Toko, M. Nkakwa, A.

The African root and tuber scale insect (ARTS)(Stictococcus vayssierei. Richard) has increasingly become a major pest of cassava in the forest areas of the Bas-Fleuve District in the most western province of the Democratic Republic of Congo where it was known since long ago without any noticeable...

La Cochenille Africaine des Racines et Tubercules(CART) Stictococcus vayssierei Richard estdevenu un ravageur majeur dans les parties desfor6ts secondaires du district du Bas-Fleuve dansla province du Bas-Congo en R6publiqueD6mocratique du Congo oir cet insecte est connudepuis de longues dates sa...

Enlace original: https://cgspace.cgiar.org/handle/10568/91763

Investigación en Agricultura
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Tata-Hangy, K.W. ,  Lema, K. ,  Ndambi, N. ,  Lutete, D. ,  Hanna, R. ,  Toko, M. ,  Nkakwa, A. ,  [Notes on the African root and tuber scale, Stictococcus vayssierei Richard, a recent reported cassava pest in the BasCongo Province of the Democratic Republic of Congo] ,  Notes on the African root and tuber scale, Stictococcus vayssierei Richard, a recent reported cassava pest in the BasCongo Province of the Democratic Republic of Congo
Journal Article 2006

Autor: Tindo, M. Doumtsop, A. Goergen, Georg E. Hanna, R.

The African root and tuber scale Stictococcus vayssierei Richard is the only known hypogeal species of the family Stictococcidae. Its wide range of host plants together with concurrently field observed differences in host preference provided evidence of polyphagy or the involvement of more than a...

La cochenille Africaine des plantes it racines et tubercules Stictococcus vayssierei Richard est l'unique espece souterraine decrite appartenant it la farnille des Stictococcidae. La large gamme des plantes attaquees ainsi que les differences de preference observees suggerent l'implication de plu...

Enlace original: https://cgspace.cgiar.org/handle/10568/91775

Investigación en Agricultura
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Tindo, M. ,  Doumtsop, A. ,  Goergen, Georg E. ,  Hanna, R. ,  [Morphological description and illustration of the female developmental stages of Stictococcus vayssierei (Homoptera: Stictoccocidae)] ,  Morphological description and illustration of the female developmental stages of Stictococcus vayssierei (Homoptera: Stictoccocidae)
Journal Article 2006

Autor: Adango, E. Onzo, A. Hanna, R. Atachi, P. James, B.

A survey of the mite fauna associated with Amaranthus cruentus L. (amaranth), Solanum macrocarpon L. (Gboma) and S. aethiopicum L. (African eggplant), three major indigenous vegetables produced in Benin, was carried out from August to October 2004 both at IITA-Benin station and on a vegetable far...

Un inventaire de la faune des acariens associes a Amaral1.thus cruentus L. (amarante), Solanum macrocarpon L. (Gboma), et SoLanum aethiopicwn L. (aubergin fricaine), h•ois principaux legumes indigenes cultives au Benin, a ete entrepris d'aout a octobre 2004 sur la Station de IITA Benin et sur Ie ...

Enlace original: https://cgspace.cgiar.org/handle/10568/91774

Investigación en Agricultura
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Adango, E. ,  Onzo, A. ,  Hanna, R. ,  Atachi, P. ,  James, B. ,  [Inventaire de la faune des acariens sur Amaranthus cruentus L. (Amaranthaceae); Solanum macrocarpon L. et Solanum aethiopicum L. (Solanaceae) dans le SudBenin] ,  Inventaire de la faune des acariens sur Amaranthus cruentus L. (Amaranthaceae); Solanum macrocarpon L. et Solanum aethiopicum L. (Solanaceae) dans le SudBenin

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