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The interactions between cowpea and one of its key pests, Megalurothrips sjostedti (Trybom), were evaluated via a simulation model based on three modules building the core of the cowpea growth model, i.e. the time-varying distributed delay, the functional response acquisition function, and the me...


Tamo, M.Baumgaertner, J.U.Gutiérrez, A.[Analysis of the cowpea agroecosystem in West Africa: II. Modelling the interactions between cowpea and the bean flower thrips Megalurothrips sjostedti (Trybom) (Thysanoptera, Thripidae)]Analysis of the cowpea agroecosystem in West Africa: II. Modelling the interactions between cowpea and the bean flower thrips Megalurothrips sjostedti (Trybom) (Thysanoptera, Thripidae)

The objective of this study was to investigate on how the interactions between the microbial syrnbionts (AMF+rhizobia) and the rnycopesticide M. anisopliae can affect the cowpea production in varied agro ecological zones of Cameroon. Cowpea of the Bafia local cultivar was grown from 1999 to 2004 ...


Ngakou, A.Nwaga, D.Ntonifor, N.N.Tamo, M.Nebane, C.L.N.Parh, I.A.[Contribution of Arbuscular mycorrhizal fungi (AMF), rhizobia and metarhizium anisopliae to cowpea production in Cameroon]Contribution of Arbuscular mycorrhizal fungi (AMF), rhizobia and metarhizium anisopliae to cowpea production in Cameroon

Cowpea (Vigna unguiculata Walp.) is the most economically important legume crop in arid regions of sub-Saharan Africa. Cowpea is grown primarily by subsistence farmers who consume the leaves, pods and grain on farm or sell grain in local markets. Processed cowpea foods such as akara (a deep-fat f...


Ba, Malick N.Huesing, J.E.Tamo, M.Higgins, T.J.V.Pittendrigh, B.R.Murdock, L.L.[An assessment of the risk of Bt-cowpea to non-target organisms in west Africa]An assessment of the risk of Bt-cowpea to non-target organisms in west Africa

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...


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

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...


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

A number of recent studies have added further information on the genetics of important traits in cowpea. These include inheritance of qualitative traits such as plant pigmentation; flower colour, seed colour, seed coat texture, resistance to rust, scab, smut, nematode, severe mosaic virus, Striga...


Fatokun, C.A.Tarawal, S.A.Singh, B.B.Kormawa, P.M.Tamo, M.[Challenges and opportunities for enhancing sustainable cowpea production: proceedings of the World Cowpea Conference III held at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, 48 September 2000]Challenges and opportunities for enhancing sustainable cowpea production: proceedings of the World Cowpea Conference III held at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, 48 September 2000

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 ...


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)

The bioecology of the cowpea pod weevil, Piezotrachelus varius, and post-harvest seed losses were studied in the laboratory and in cowpea fields in the Western Highlands of Cameroon during the first and second cropping seasons of 1999 and 2000. Adult weevils appeared before flowering and fed on c...


Ntonifor, N.Edimengo, P.Tamo, M.[Bioecology of the cowpea pod weevil Piezotrachelus varius Wagner (Coleoptera: Curculionidae), and cowpea seed damage]Bioecology of the cowpea pod weevil Piezotrachelus varius Wagner (Coleoptera: Curculionidae), and cowpea seed damage

Damping-off and stem rot of cowpea is an important soil-borne disease worldwide. Cowpea fields were randomly chosen in each agro-ecological zone in Benin and surveyed in 2001 and 2002 to determine the occurrence of the diseases throughout the country. Diseased plants, prevailing environmental con...


Adandonon, A.Aveling, T.A.S.Tamo, M.[Occurrence and distribution of cowpea damping-off and stem rot and associated fungi in Benin]Occurrence and distribution of cowpea damping-off and stem rot and associated fungi in Benin

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