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Journal Article 2004

Autor: Kormawa, P.M. Ezedinma, C. Singh, B.

Diffusion of improved technologies among small-scale farmers, especially where formal methods and market mechanisms are inefficient, can be enhanced through the participation of farmers. Unfortunately, formal methods of disseminating improved seed in most African countries have not taken advantag...

Enlace original: https://cgspace.cgiar.org/handle/10568/103375

Investigación en Agricultura
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Kormawa, P.M. ,  Ezedinma, C. ,  Singh, B. ,  [Factors influencing farmer-to-farmer transfer of an improved cowpea variety in Kano State, Nigeria] ,  Factors influencing farmer-to-farmer transfer of an improved cowpea variety in Kano State, Nigeria
Journal Article 2007

Autor: Oigiangbe, O.N. Igbinosa, I.B. Tamo, M.

The bioactivity of water and methanol extracts of Alstonia booneii stem bark against Maruca vitrata Fabricius, was studied in the laboratory through a bioassay. When incorporated into the artificial diet at 0.0% (control), 1.0%, 2.5 %, 5.0 %, and 10.0 % concentrations, respectively, both extrac...

Enlace original: https://cgspace.cgiar.org/handle/10568/92856

Investigación en Agricultura
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Oigiangbe, O.N. ,  Igbinosa, I.B. ,  Tamo, M. ,  [Bioactivity of extracts of Alstonia boonei (Apocynaceae) De wild stem bark against Maruca vitrata (Lepidoptera: Pyralidae) Fabricius] ,  Bioactivity of extracts of Alstonia boonei (Apocynaceae) De wild stem bark against Maruca vitrata (Lepidoptera: Pyralidae) Fabricius
Journal Article 2000

Autor: Singh, B.B. Ishiyaku, M.

Seed coat texture is an important trait in determining the acceptability of cowpea varieties in different regions. A rough seed coat is preferred in western and central Africa, since it permits easy removal of the seed coat which is essential for indigenous food preparations. On the other hand, a...

Enlace original: https://cgspace.cgiar.org/handle/10568/99848

Investigación en Agricultura
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Singh, B.B. ,  Ishiyaku, M. ,  [Genetics of rough seed coat texture in cowpea] ,  Genetics of rough seed coat texture in cowpea
Journal Article 2000

Autor: Asante, Stephen K. Jackai, L.E.N. Tamo, M.

Field surveys were conducted on cowpea and pigeon pea in 1995 and 1996 to assess the effect of indigenous egg parasitoids on populations of Clavigralla tomentosicollis Stål in northern Nigeria. From the egg masses of C. tomentosicollis, three species of Hymenoptera belonging to three families, na...

Enlace original: https://cgspace.cgiar.org/handle/10568/99837

Investigación en Agricultura
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Asante, Stephen K. ,  Jackai, L.E.N. ,  Tamo, M. ,  [Efficiency of Gryon fulviventris (Hymenoptera: Scelionidae) as an egg parasitoid of Clavigralla tomentosicollis Stal. (Hemiptera: Coreidae) in northern Nigeria] ,  Efficiency of Gryon fulviventris (Hymenoptera: Scelionidae) as an egg parasitoid of Clavigralla tomentosicollis Stal. (Hemiptera: Coreidae) in northern Nigeria
Journal Article 1992

Autor: Jackai, L.E.N. Inang, E.E. Nwobi, P.

The insecticidal activity of neem, Azadirachta indica A. Juss., was tested on two major cowpea pests using different concentrations of aqueous extracts, and powders of both neem seed and kernel. The pests were larvae of Maruca testulalis Geyer (Lepidoptera: Pyralidae), the legume pod borer and Cl...

Enlace original: https://cgspace.cgiar.org/handle/10568/100038

Investigación en Agricultura
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Jackai, L.E.N. ,  Inang, E.E. ,  Nwobi, P. ,  [The potential for controlling postflowering pests of cowpea, Vigna unguiculata Walp., using neem, Azadirachta indica A. Juss] ,  The potential for controlling postflowering pests of cowpea, Vigna unguiculata Walp., using neem, Azadirachta indica A. Juss
Journal Article 1992

Autor: Mesfin, T. Thottappilly, G. Singh, S.R.

The feeding activity of Aphis craccivora (Koch) was monitored on cowpea plants of aphid‐susceptible (Vita 7) and aphid‐resistant (TVu 801) cultivars, using an AC electronic feeding monitoring system. Waveforms corresponding to salivation, phloem ingestion and non‐phloem ingestion were observed. A...

Enlace original: https://cgspace.cgiar.org/handle/10568/100022

Investigación en Agricultura
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Mesfin, T. ,  Thottappilly, G. ,  Singh, S.R. ,  [Feeding behaviour of Aphids craccivora (Koch) on cowpea cultivars with different levels of aphid resistance] ,  Feeding behaviour of Aphids craccivora (Koch) on cowpea cultivars with different levels of aphid resistance
Journal Article 1992

Autor: Adebitan, S.A. Ikotun, T. Dashiell, Kenton E. Singh, S.R.

Twelve cowpea cultivars were screened for reactions to infection by Colletotrichum lindemuthianum and C. truncatum, causal agents of anthracnose and brown blotch diseases, respectively. Three different inoculation techniques were used: spraying a spore suspension on leaves of seedlings, injecting...

Enlace original: https://cgspace.cgiar.org/handle/10568/100025

Investigación en Agricultura
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Adebitan, S.A. ,  Ikotun, T. ,  Dashiell, Kenton E. ,  Singh, S.R. ,  [Use of three inoculation methods in screening cowpea genotypes for resistance to two Colletotrichum species] ,  Use of three inoculation methods in screening cowpea genotypes for resistance to two Colletotrichum species
Journal Article 2000

Autor: Fritzsche, M. Tamo, M.

The effects of two diets, i.e., cowpea leaves plus Megalurothrips sjostedti larvae versus cowpea leaves alone, on nymphal development and mortality of Orius albidipennis were studied under controlled laboratory conditions in Benin, West Africa. Nymphal development was longer when O. albidipennis ...

Enlace original: https://cgspace.cgiar.org/handle/10568/99878

Investigación en Agricultura
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Fritzsche, M. ,  Tamo, M. ,  [Influence of thrips prey species on the lifehistory and behaviour of Orius albidipennis (Reuter) (Heteroptera)] ,  Influence of thrips prey species on the lifehistory and behaviour of Orius albidipennis (Reuter) (Heteroptera)
Journal Article 2000

Autor: Boxtel, J. van Singh, B. Thottappilly, G. Maule, A.

Virus diseases cause substantial yield reduction in cowpea ( Vigna unguiculata (L.) Walp) production in West and Central Africa. Improved cowpea cultivars have been developed and distributed to various national programs but these cultivars were tested only against local virus isolates. To identif...

Enlace original: https://cgspace.cgiar.org/handle/10568/100086

Investigación en Agricultura
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Boxtel, J. van ,  Singh, B. ,  Thottappilly, G. ,  Maule, A. ,  [Resistance of cowpea (Vigna unguiculata (L.) Walp.) breeding lines to blackeye cowpea mosaic and cowpea aphid borne mosaic potyvirus isolates under experimental conditions] ,  Resistance of cowpea (Vigna unguiculata (L.) Walp.) breeding lines to blackeye cowpea mosaic and cowpea aphid borne mosaic potyvirus isolates under experimental conditions

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