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 ...
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]
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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
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...
Ndemah, R.
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Schulthess, F.
,
Poehling, M.
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Borgemeister, C.
,
Goergen, Georg E.
,
[Natural enemies of lepidopterous borers on maize and elephant grass in the forest zone of Cameroon]
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Natural enemies of lepidopterous borers on maize and elephant grass in the forest zone of Cameroon
Life table studies of Mussidia nigrivenella Ragonot, a pest of maize in Benin, showed that host plant species had a significant effect on larval survival and developmental time. The maximum percentage of larvae surviving was recorded on jackbean, Canavalia ensiformis (36%) and lowest on maize (18...
Sétamou, M.
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Schulthess, F.
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Bosque Pérez, N.A.
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Poehling, H.M.
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Borgemeister, C.
,
[Bionomics of Mussidia nigrivenella (Lepidoptera: Pyralidae) on three host plants]
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Bionomics of Mussidia nigrivenella (Lepidoptera: Pyralidae) on three host plants
The effects of egg clutch size on development and survivorship of the larger grain borer, Prostephanus truncatus (Horn) (Col.: Bostrichidae) on maize were measured in the laboratory using single grains of the white maize variety, TZSR-W, at 30 ± 2°C and 70 ± 5% RH. Varying numbers of P. truncatus...
Laboratory experiments using whole cobs were conducted to examine the effect of varying densities of the larger grain borer, Prostephanus truncatus and the maize weevil, Sitophilus zeamais on rate of population increase by the histerid beetle, Teretriosoma nigrescens, a predator primarily of P. t...
Ayertey, J.N.
,
Meikle, W.G.
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Borgemeister, C.
,
Camara, M.
,
Markham, R.H.
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[Studies on predation of Prostephanus truncatus (Horn) (Col., Bostrichidae) and Sitophilus zeamais Mots. (Col., Curculionidae) at different densities on maize by Teretriosoma nigrescens Lewis (Col., Histeridae)]
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Studies on predation of Prostephanus truncatus (Horn) (Col., Bostrichidae) and Sitophilus zeamais Mots. (Col., Curculionidae) at different densities on maize by Teretriosoma nigrescens Lewis (Col., Histeridae)
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...
Ndemah, R.
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Schulthess, F.
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Korie, S.
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Borgemeister, C.
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Cardwell, K.F.
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[Distribution, relative importance and effect of lepidopterous borers on maize yields in the forest zone and midaltitude of Cameroon]
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Distribution, relative importance and effect of lepidopterous borers on maize yields in the forest zone and midaltitude of Cameroon
Delta traps baited with maize cobs, which were infested each with one male Prostephanus truncatus (Horn) (Col.: Bostrichidae), were distributed in southern Benin and collected after one, two, three and four weeks. The numbers of P. truncatus caught during the different trapping periods were not s...
Scholz, D.
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Borgemeister, C.
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Meikle, W.G.
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Markham, R.H.
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Poehling, H.M.
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[Infestation of maize by Prostephanus truncatus initiated by maleproduced pheromone]
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Infestation of maize by Prostephanus truncatus initiated by maleproduced pheromone
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 (...
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]
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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
The spatial distribution of Mussidia nigrivenella Ragonot was studied in maize fields and on four major wild host plants in the Republic of Benin, West Africa. Maize ears were sampled at harvest in 1994 and 1995, and fruits of the wild host plants were collected monthly from January 1996 to Decem...
Sétamou, M.
,
Schulthess, F.
,
Poehling, H.
,
Borgemeister, C.
,
[Spatial distribution of and sampling plans for Mussidia nigrivenella (Lepidoptera: Pyralidae) on cultivated and wild host plants in Benin]
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Spatial distribution of and sampling plans for Mussidia nigrivenella (Lepidoptera: Pyralidae) on cultivated and wild host plants in Benin
In many countries in West Africa, the pyralid ear borer Mussidia nigrivenella Ragonot occasionally causes severe damage to pre- and postharvest maize. Between 1992 and 1995, the distribution of and damage caused by M. nigrivenella were studied in Benin using survey data and an on-station field ex...
Sétamou, M.
,
Schulthess, F.
,
Poehling, H.
,
Borgemeister, C.
,
[Monitoring and modeling of field infestations and damage by the maize ear borer Mussidia nigrivenella Ragonot (Lepidoptera: Pyralidae) in Benin, West Africa]
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Monitoring and modeling of field infestations and damage by the maize ear borer Mussidia nigrivenella Ragonot (Lepidoptera: Pyralidae) in Benin, West Africa