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Journal Article 2002

Autor: Ngoko, Z. Cardwell, K. Marasas, W.F.O. Wingfield, M. Ndemah, R. Schulthess, F.

The aim was to identify biological and physical factors responsible for reducing maize yield in Cameroon. Two surveys were conducted in 137 fields in two agroecological zones in 1995–1997. In the Humid Forest (HF), Bipolaris maydis, Stenocarpella macrospora, Puccinia polysora, Rhizoctonia solani ...

Enlace original: https://cgspace.cgiar.org/handle/10568/92747

Investigación en Agricultura
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Ngoko, Z. ,  Cardwell, K. ,  Marasas, W.F.O. ,  Wingfield, M. ,  Ndemah, R. ,  Schulthess, F. ,  [Biological and physical contraints on maize production in the Humid Forest and Western Highlands of Cameroon] ,  Biological and physical contraints on maize production in the Humid Forest and Western Highlands of Cameroon
Journal Article 2001

Autor: Ndemah, R. Poehling, H. Borgemeister, C. Schulthess, F.

common lepidopterous borers attacking maize and/or the wild host Penni.l'etum purpureum in the forest zonc of Camcroon arc the noctuids Buss('ola.li/sca (Fuller), Sesamia calamistis (Hampson) and Poeol1oma serrata (Hampson), the pyralids Eldani! s{{cc/wrin{{ (Walker) and Mus.l'idia nigrivel1ella ...

Enlace original: https://cgspace.cgiar.org/handle/10568/103669

Investigación en Agricultura
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Ndemah, R. ,  Poehling, H. ,  Borgemeister, C. ,  Schulthess, F. ,  [Spatial dynamics of lepidopterous pests on Zea mays (Linnaeus) and Pennisetum purpureum (Moench) in the forest zone of Cameroon and their implications for sampling schemes] ,  Spatial dynamics of lepidopterous pests on Zea mays (Linnaeus) and Pennisetum purpureum (Moench) in the forest zone of Cameroon and their implications for sampling schemes
Journal Article 2001-06

Autor: Ndemah, R. Schulthess, F. Poehling, M. Borgemeister, C. Goergen, Georg E.

The importance, geographical and temporal distributions of parasitoids of lepidopterous borers on maize and elephant grass, Pennisetum purpureum, were assessed during surveys in farmers’ fields in six villages and two on-station trials in the forest zone of Cameroon between 1995 and 1996. The bor...

Enlace original: https://cgspace.cgiar.org/handle/10568/96579

Investigación en Agricultura
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Ndemah, R. ,  Schulthess, F. ,  Poehling, M. ,  Borgemeister, C. ,  Goergen, Georg E. ,  [Natural enemies of lepidopterous borers on maize and elephant grass in the forest zone of Cameroon] ,  Natural enemies of lepidopterous borers on maize and elephant grass in the forest zone of Cameroon
Journal Article 2001-12-01

Autor: Ndemah, R. Schulthess, F. Korie, S. Borgemeister, C. Cardwell, K.F.

Geographic distribution, relative importance, and effect of lepidopterous stem and ear borers on maize, Zea mays L., were studied in the humid forest and the mid-altitude zones of Cameroon from 1994 to 1997. Six villages were chosen in the forest zone and grouped into three blocks representing gr...

Enlace original: https://cgspace.cgiar.org/handle/10568/96581

Investigación en Agricultura
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Ndemah, R. ,  Schulthess, F. ,  Korie, S. ,  Borgemeister, C. ,  Cardwell, K.F. ,  [Distribution, relative importance and effect of lepidopterous borers on maize yields in the forest zone and midaltitude of Cameroon] ,  Distribution, relative importance and effect of lepidopterous borers on maize yields in the forest zone and midaltitude of Cameroon
Journal Article 1997

Autor: Schulthess, F. Bosque Pérez, N.A. Chabi-Olaye, A. Gounou, S. Ndemah, R. Goergen, Georg E.

Difficulties of identification of natural enemies of cereal stemborers for 'redistribution' in Africa are discussed. Tritrophic level studies on wild and cultivated habitats of borers and beneficial species are needed to judge the impact of a natural enemy species in the cropping system. Areas wi...

Enlace original: https://cgspace.cgiar.org/handle/10568/98681

Investigación en Agricultura
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Schulthess, F. ,  Bosque Pérez, N.A. ,  Chabi-Olaye, A. ,  Gounou, S. ,  Ndemah, R. ,  Goergen, Georg E. ,  [Exchanging natural enemies species of lepidopterous cereal stemborers between African regions] ,  Exchanging natural enemies species of lepidopterous cereal stemborers between African regions
Journal Article 2000

Autor: Ndemah, R. Schulthess, F. Poehling, H. Borgemeister, C.

Lepidopterous stem borers were monitored on plots of maize, Zea mays, and elephant grass, Pennisetum purpureum (Moench), during two consecutive cropping seasons and the off-season at two forest margin locations, Nkolbisson and Minkomeyos, in Cameroon. Busseola fusca (Fuller), Sesamia calamistis (...

Enlace original: https://cgspace.cgiar.org/handle/10568/99864

Investigación en Agricultura
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Ndemah, R. ,  Schulthess, F. ,  Poehling, H. ,  Borgemeister, C. ,  [Species composition and seasonal dynamics of lepidopterous stemborers on maize and the elephant grass, Pennisetum purpureum (Moench)(Poaceae), at two forest margin sites in Cameroon] ,  Species composition and seasonal dynamics of lepidopterous stemborers on maize and the elephant grass, Pennisetum purpureum (Moench)(Poaceae), at two forest margin sites in Cameroon
Journal Article 2012-11

Autor: Sezonlin, M. Ndemah, R. Goergen, Georg E. Le Rü, B. Dupas, S. Silvain, J.

The cereal stem borer Busseola fusca Fuller (Lepidoptera: Noctuidae) is a species endemic to sub-Saharan Africa. It is amajor pest ofmaize and cultivated sorghum, the main cereal crops on the African mainland. Previous studies using mitochondrial markers revealed the presence of three clades of h...

Enlace original: https://cgspace.cgiar.org/handle/10568/80844

Investigación en Agricultura
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Sezonlin, M. ,  Ndemah, R. ,  Goergen, Georg E. ,  Le Rü, B. ,  Dupas, S. ,  Silvain, J. ,  [Genetic structure and origin of Busseola fusca (Fuller) (Lepidoptera, Noctuidae) populations in Cameroon] ,  Genetic structure and origin of Busseola fusca (Fuller) (Lepidoptera, Noctuidae) populations in Cameroon
Journal Article 1997

Autor: Cardwell, K.F. Schulthess, F. Ndemah, R. Ngoko, Z.

Three surveys of maize fields were undertaken in 1993 in Cameroon, ranging from low to high altitudes, and from forests in the south with bimodal rainfall (two cropping seasons) to the northern savanna with monomodal rainfall distribution (one cropping season). Field conditions, insects and disea...

Enlace original: https://cgspace.cgiar.org/handle/10568/96036

Investigación en Agricultura
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Cardwell, K.F. ,  Schulthess, F. ,  Ndemah, R. ,  Ngoko, Z. ,  [A systems approach to assess crop health and maize yield lossess due to pests and diseases in Cameroon] ,  A systems approach to assess crop health and maize yield lossess due to pests and diseases in Cameroon
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

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