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Journal Article 2001-05

Autor: Chabi-Olaye, A. Schulthess, F. Poehling, H.M. Borgemeister, C.

This study aimed at an assessment of the potential of the egg parasitoid Telenomus isis (Polaszek) as a biological control agent of cereal stem borers. Therefore, the effects of temperature, host species, host age, and time of host deprivation on the development and the reproductive potential of ...

Enlace original: https://cgspace.cgiar.org/handle/10568/103411

Investigación en Agricultura
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Chabi-Olaye, A. ,  Schulthess, F. ,  Poehling, H.M. ,  Borgemeister, C. ,  [Factors affecting the biology of Telenomus isis (Polaszek) (Hymenoptera : Scelionidae), an egg parasitoid of cereal stem borers in West Africa] ,  Factors affecting the biology of Telenomus isis (Polaszek) (Hymenoptera : Scelionidae), an egg parasitoid of cereal stem borers in West Africa
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
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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 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: Setamou, M. Cardwell, K. Schulthess, F. Hell, K.

Eighty and sixty maize fields were sampled in 1994 and 1995, respectively, to monitor Aspergillus infection and aflatoxin contamination of preharvest maize in Benin. Three Aspergillus species were isolated from different agroecological zones, with A. flavus being the most prevalent. The countrywi...

Enlace original: https://cgspace.cgiar.org/handle/10568/98657

Investigación en Agricultura
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Setamou, M. ,  Cardwell, K. ,  Schulthess, F. ,  Hell, K. ,  [Aspergillus flavus infection and aflatoxin contamination of preharvest maize in the Republic of Benin] ,  Aspergillus flavus infection and aflatoxin contamination of preharvest maize in the Republic of Benin
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 1997

Autor: Hailemichael, Y. Schulthess, F. Smith, W. Overholt, W.A.

The palaeotropical, gregarious, endoparasitic braconids Cotesia sesamiae, Cotesia flavipes and Cotesia chilonis were recently imported into Benin as candidates for biological control of stem and cob borers of maize. Host acceptability and host suitability of six gramineous borers occurring in wes...

Enlace original: https://cgspace.cgiar.org/handle/10568/98699

Investigación en Agricultura
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Hailemichael, Y. ,  Schulthess, F. ,  Smith, W. ,  Overholt, W.A. ,  [Suitability of West African gramineous stemborers for the development of Cotesia species (Hymenoptera: Brachonidae)] ,  Suitability of West African gramineous stemborers for the development of Cotesia species (Hymenoptera: Brachonidae)
Journal Article 1992

Autor: Boavida, C. Neuenschwander, P. Schulthess, F.

The spatial dispersion pattern and the intracanopy distribution of the mango mealybug, Rastrococcus invadens Williams, were assessed during one year in a small mango plantation, in order to develop sampling plans and facilitate sampling in mango trees. Mean number of mango mealybugs per leaf diff...

Enlace original: https://cgspace.cgiar.org/handle/10568/103272

Investigación en Agricultura
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Boavida, C. ,  Neuenschwander, P. ,  Schulthess, F. ,  [Spatial distribution of Rastrococcus invadens Williams (Hom., Pseudococcidae) in mango trees] ,  Spatial distribution of Rastrococcus invadens Williams (Hom., Pseudococcidae) in mango trees
Journal Article 1996

Autor: Chabi-Olaye, A. Schulthess, F. Shanower, T.G. Bosque Pérez, N.A.
Enlace original: https://cgspace.cgiar.org/handle/10568/103262

Investigación en Agricultura
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Chabi-Olaye, A. ,  Schulthess, F. ,  Shanower, T.G. ,  Bosque Pérez, N.A. ,  [Factors influencing the bionomics of Telenomus busseolae (Gahan) (Hym.: Scelionidae) an egg parasitoid of Sesamia calamistis Hampson (Lep.: Nactuidae)] ,  Factors influencing the bionomics of Telenomus busseolae (Gahan) (Hym.: Scelionidae) an egg parasitoid of Sesamia calamistis Hampson (Lep.: Nactuidae)
Journal Article 2013-01

Autor: Agboka, K. Schulthess, F. Tounou, A.K. Tamò, M. Vidal, S.

In southern Benin, the use of cover crops to improve and maintain soil fertility is on the increase. The present study investigated the effect of two leguminous cover crops, Canavalia ensiformis (L.) DC and Sesbania rostrata Brem. & Oberm., planted at different dates before maize (Zea mays (L.)),...

Enlace original: https://cgspace.cgiar.org/handle/10568/76032

Investigación en Agricultura
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Agboka, K. ,  Schulthess, F. ,  Tounou, A.K. ,  Tamò, M. ,  Vidal, S. ,  [The effect of leguminous cover crops and cowpea planted as border rows on maize ear borers with special reference to Mussidia nigrivenella Ragonot (Lepidoptera: Pyralidae)] ,  The effect of leguminous cover crops and cowpea planted as border rows on maize ear borers with special reference to Mussidia nigrivenella Ragonot (Lepidoptera: Pyralidae)
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

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