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Journal Article 1998

Autor: Vanlauwe, Bernard Sanginga, N. Merckx, R.

Quantification of the fate of residue N is essential in low-input tropical cropping systems for the development of management practices that optimize N-use efficiency. The recovery of N from 15N-labeled leucaena (Leucaena leucocephala (Lam.) de Wit) and dactyladenia (Dactyladenia barteri (Hook f ...

Enlace original: https://cgspace.cgiar.org/handle/10568/95958

Investigación en Agricultura
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Vanlauwe, Bernard ,  Sanginga, N. ,  Merckx, R. ,  [Recovery of leucaena and dactyladenia residue nitrogen15 in alley cropping systems] ,  Recovery of leucaena and dactyladenia residue nitrogen15 in alley cropping systems
Journal Article 1998

Autor: Vanlauwe, Bernard Diels, J. Duchateau, L. Sanginga, N. Merckx, R.

In tropical cropping systems with few external imputs, efficient management of mineral N derived from added organic residues is essential for the proper functioning of the system. We studied the dynamics of mineral Nitroden (N) in the top 100 cm of soil with a system tensiometers and suction cups...

Enlace original: https://cgspace.cgiar.org/handle/10568/100983

Investigación en Agricultura
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Vanlauwe, Bernard ,  Diels, J. ,  Duchateau, L. ,  Sanginga, N. ,  Merckx, R. ,  [Mineral N dynamics in bare and cropped Leucaena leucocephala and Dactyladenia barteri alley cropping systems after the addition of 15Nlabelled leaf residues] ,  Mineral N dynamics in bare and cropped Leucaena leucocephala and Dactyladenia barteri alley cropping systems after the addition of 15Nlabelled leaf residues
Journal Article 1996

Autor: Lattanzio, V. Cardinali, A. Linsalata, V. Perrino, P. Ng, N.Q.

Flavonoid chemical markers together with other biochemical markers and/or morphological data can provide useful characters for defining species in Vigna genus. In this paper flavonoid HPLC fingerprints have been utilized to assess taxonomic relationships amongst species and accessions of Vigna.Wi...

Enlace original: https://cgspace.cgiar.org/handle/10568/101029

Investigación en Agricultura
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Lattanzio, V. ,  Cardinali, A. ,  Linsalata, V. ,  Perrino, P. ,  Ng, N.Q. ,  [A Chemosystematic study of the flavonoids of Vigna] ,  A Chemosystematic study of the flavonoids of Vigna
Journal Article 1996

Autor: Singh, B.B. Sharma, B.

The cowpea breeding programmes are reviewed and achievements at two major centres of cowpea research, i.e. IITA (Nigeria) and IARI (India), are summarized. Earlyand extra early genotypes are always photoperiod-insensitive, medium maturity varieties could be sensitive or neutral today length, whil...

Enlace original: https://cgspace.cgiar.org/handle/10568/101025

Investigación en Agricultura
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Singh, B.B. ,  Sharma, B. ,  [Restructuring cowpea for higher yield] ,  Restructuring cowpea for higher yield
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

Investigación en Agricultura
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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: Bottenberg, H.

Farmers of rainfed cowpea/groundnut/millet/sorghum cropping systems in Kano, Nigeria, ranked arthropods as the major production constraint in cowpea and groundnut in 1991 and 1992. At least 25% of the farmers also reported severe infestations by Striga gesneroides a parasitic weed of cowpea. Drou...

Enlace original: https://cgspace.cgiar.org/handle/10568/101052

Investigación en Agricultura
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Bottenberg, H. ,  [Farmers perceptions of crop pests and pest control practices in rainfed cowpea cropping systems in Kano, Nigeria] ,  Farmers perceptions of crop pests and pest control practices in rainfed cowpea cropping systems in Kano, Nigeria
Journal Article 1995

Autor: Dreyer, H. Baumgaertner, J.U.

Stage-specific survival rates of cowpea seeds were evaluated in fields planted during both cropping seasons of 1991 and 1992 in southern Benin using Manly's regression model. Considerable seed damage could be recognised in all seed growth stages and reflected the variable pest infestations during...

Enlace original: https://cgspace.cgiar.org/handle/10568/101061

Investigación en Agricultura
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Dreyer, H. ,  Baumgaertner, J.U. ,  [The influence of postflowering pests on cowpea seed yield with particular reference to damage by Heteroptera in southern Benin] ,  The influence of postflowering pests on cowpea seed yield with particular reference to damage by Heteroptera in southern Benin
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

Investigación en Agricultura
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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: Sonnante, G. Piergiovanni, A.R. Ng, Q.N. Perrino, P.

Isozyme variation in 25 accessions of wild and cultivated Vigna unguiculata, 49 accessions of seven wild species belonging to section Vigna, and 11 accessions of V vexillata (subgenus Plectrotropis) was scored at 17 putative loci to assess genetic relationships within and among species. The wild ...

Enlace original: https://cgspace.cgiar.org/handle/10568/101024

Investigación en Agricultura
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Sonnante, G. ,  Piergiovanni, A.R. ,  Ng, Q.N. ,  Perrino, P. ,  [Relationships of Vigna unguiculata (L) Walp., V. vexilata (L) A.Rich. and species of section Vigna based on isozyme variation] ,  Relationships of Vigna unguiculata (L) Walp., V. vexilata (L) A.Rich. and species of section Vigna based on isozyme variation
Journal Article 1996

Autor: Verdier, Valérie Assigbétsé, K. Khatri-Chhetri, G. Wydra, K. Rudolph, K. Geiger, J.

Strains of Xanthomonas campestris pv. vignicola (Xcv), isolated from cowpea leaves with blight or minute pustules and collected from various geographic areas, were selected on the basis of pathological and physiological features. All strains were analyzed for genotypic markers by two methods: rib...

Enlace original: https://cgspace.cgiar.org/handle/10568/101011

Investigación en Agricultura
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Verdier, Valérie ,  Assigbétsé, K. ,  Khatri-Chhetri, G. ,  Wydra, K. ,  Rudolph, K. ,  Geiger, J. ,  [Molecular characterization of the incitant of cowpea bacterial blight and pustule, Xanthomonas campertris pv. vignicola] ,  Molecular characterization of the incitant of cowpea bacterial blight and pustule, Xanthomonas campertris pv. vignicola

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