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Journal Article 1986

Autor: Jackai, L.E.N. Daoust, R.A.

Cowpeas (blackeye peas, or simply beans in many parts of Africa), Vigna unguiculata, are widely grown in the tropics and subtropics for human as well as for animal food. Nigeria, Brazil, and Niger are among the major producers and account for over 70% of the world crop (137, 174). Nigeria alone...

Enlace original: https://cgspace.cgiar.org/handle/10568/96327

Investigación en Agricultura
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Jackai, L.E.N. ,  Daoust, R.A. ,  [Insect pests of cowpeas] ,  Insect pests of cowpeas
Journal Article 2001-06

Autor: Jackai, L.E.N. Nokoe, S. Tayo, B.O. Koona, P.

Studies were conducted in the laboratory to investigate the different components of the resistance of Vigna vexillata A. Richards, TVnu 72, and several cultivars of cultivated Vigna spp. to infestation and damage by the brown cowpea coreid, Clavigralla tomentosicollis Stäl. The main objective was...

Enlace original: https://cgspace.cgiar.org/handle/10568/96908

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Jackai, L.E.N. ,  Nokoe, S. ,  Tayo, B.O. ,  Koona, P. ,  [Inferences on pod wall and seed defenses against the brown cowpea coreid bug, Clavigralla tometosicollis Stal ( Hempptera Coreidae) in wild and cultivated Vigna species] ,  Inferences on pod wall and seed defenses against the brown cowpea coreid bug, Clavigralla tometosicollis Stal ( Hempptera Coreidae) in wild and cultivated Vigna species
Book Chapter 1997

Autor: Bottenberg, H. Tamo, M. Arodokoun, D. Jackai, L.E.N. Singh, B. Youm, O.

The population dynamics of major cowpea pests was studied in northern Nigeria during 1992-95 in both the wet and dry seasons. Rainfall cowpea is grown as a subsistence crop, mixed at low densities with cereals. Dry-season cowpea is irrigated or grown on residual moisture in monocultures as a cash...

Enlace original: https://cgspace.cgiar.org/handle/10568/95972

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Bottenberg, H. ,  Tamo, M. ,  Arodokoun, D. ,  Jackai, L.E.N. ,  Singh, B. ,  Youm, O. ,  [Population dynamics and migration of cowpea pests in northern Nigeria: implications for integrated pest management] ,  Population dynamics and migration of cowpea pests in northern Nigeria: implications for integrated pest management
Book Chapter 1997

Autor: Jackai, L.E.N. Adalla, C.

Cowpea yields are known to be low in most parts of the tropics because of heavy insect pest problems. In Africa, cowpea growers do not generally use synthetic insecticides; however, in most parts of Asia, dependence on the use of insecticides is common, often with serious environmental consequenc...

Enlace original: https://cgspace.cgiar.org/handle/10568/95978

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Jackai, L.E.N. ,  Adalla, C. ,  [Pest management practices in cowpea: a review] ,  Pest management practices in cowpea: a review
Journal Article

Autor: Machuka, J. Damme, E.V. Peumans, W.J. Jackai, L.E.N.

The legume pod‐borer Maruca vitrata (Fabricius), [Lepidoptera: Pyralidae] is a major constraint restricting increased cowpea production in tropical Africa and Asia. Since lectins are known to have insecticidal properties against several pests, a survey was undertaken to screen for the effects of ...

Enlace original: https://cgspace.cgiar.org/handle/10568/96019

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Machuka, J. ,  Damme, E.V. ,  Peumans, W.J. ,  Jackai, L.E.N. ,  [Effect of plant lectins on larval development of legume pod borer, Maruca vitrata] ,  Effect of plant lectins on larval development of legume pod borer, Maruca vitrata
Journal Article 1995

Autor: Jackai, L.E.N.

Cowpea varieties were evaluated for resistance to Maruca testulalis using differential insecticide sprays that provided a range of pest densities and crop damage. The latter was expressed as a pod evaluation index, Ipe, which uses the degree of pod production or pod load (PL) and pod damage (PD)....

Enlace original: https://cgspace.cgiar.org/handle/10568/101055

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Jackai, L.E.N. ,  [The legume pod borer, M. testulalis, and its principal host plant, Vigna unguiculata (L.) Walp Use of selective insecticidal sprays as an aid in the identification of useful levels of resistance] ,  The legume pod borer, M. testulalis, and its principal host plant, Vigna unguiculata (L.) Walp Use of selective insecticidal sprays as an aid in the identification of useful levels of resistance
Journal Article 1995

Autor: Oghiakhe, S. Jackai, L.E.N. Makanjuola, W.A.

Eighteen cowpea cultivars were screened for resistance to the legume pod borer, Maruca testulalis under field conditions at two locations (Mokwa and Ibadan) in Nigeria under unprotected and two types of insecticide protection levels. Unprotected plots gave zero yield due to their exposure to the ...

Enlace original: https://cgspace.cgiar.org/handle/10568/101072

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Oghiakhe, S. ,  Jackai, L.E.N. ,  Makanjuola, W.A. ,  [Evaluation of cowpea genotypes for field resistance to the legume pod borer, M. testulalis in Nigeria] ,  Evaluation of cowpea genotypes for field resistance to the legume pod borer, M. testulalis in Nigeria
Journal Article 1996

Autor: Jackai, L.E.N. Padulosi, S. Ng, Q.

A large number of accessions belonging to selected wild Vigna species namely V. unguiculata subspecies dekindtiana, V. oblongifolia, and V. vexillata were evaluated using choice (DCAT) and no-choice (NCFT) laboratory feeding bioassays to determine their resistance to the pod borer, Maruca vitrata...

Enlace original: https://cgspace.cgiar.org/handle/10568/101036

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Jackai, L.E.N. ,  Padulosi, S. ,  Ng, Q. ,  [Resistance to the legume pod borer, Maruca vitrata Fabricius and the probable modalities involve in wild Vigna] ,  Resistance to the legume pod borer, Maruca vitrata Fabricius and the probable modalities involve in wild Vigna
Journal Article 1991

Autor: Jackai, L.E.N. Oyediran, I.O.

Neem oil (NO), and different formulations of neem oil in a solution of Tetrapleura tetraptera as emulsifier, including neem oil emulsifiable concentrate (NOEC), neem oil slurry emulsifiable concentrate (NOSEC) and 5% NOEC obtained from the seeds of the neem plant, were tested for their efficacy i...

Enlace original: https://cgspace.cgiar.org/handle/10568/101727

Investigación en Agricultura
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Jackai, L.E.N. ,  Oyediran, I.O. ,  [The potential of neem, Azadirachta indica A. Juss., for controlling postflowering pests of cowpea, Vigna unguiculata Walp. Maruca testulalis, the pod borer] ,  The potential of neem, Azadirachta indica A. Juss., for controlling postflowering pests of cowpea, Vigna unguiculata Walp. Maruca testulalis, the pod borer

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