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Conference Proceedings 2012

Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades

Autor: Kamara, A.Y. Ewansiha, S.U. Ajeigbe, Hakeem A. Okechukwu, R.U. Tefera, H. Boukar, O. Omoigui, L.O.

A field study was conducted to determine the rate of genetic improvement in grain and fodder yields of cowpea genotypes developed in the Nigerian Sudan savannas from 1970 to 2004. Results showed that grain yield ranged from 568 kg/ha for an old variety TVX3236 to 1851 kg/ha for a recently release...

Enlace original: https://cgspace.cgiar.org/handle/10568/80471

Investigación en Agricultura

COWPEAS

GRAIN LEGUMES

LEGUMINOUS CROP

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Kamara, A.Y. , Ewansiha, S.U. , Ajeigbe, Hakeem A. , Okechukwu, R.U. , Tefera, H. , Boukar, O. , Omoigui, L.O. , [Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades] , Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades

Journal Article 2004

Sources of resistance to cowpea bacterial blight disease in Nigeria

Autor: Okechukwu, R.U. Ekpo, E.J.

The development of resistant crop varieties depends on the reliability of the method of screening for resistance. One of the techniques widely used in evaluating field resistance is the field screening method. However, most cowpea varieties regarded as having field resistance are often found to b...

Enlace original: https://cgspace.cgiar.org/handle/10568/103364

Investigación en Agricultura

BACTERIAL LEAF BLIGHT

VIGNA UNGUICULATA

COWPEAS

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Okechukwu, R.U. , Ekpo, E.J. , [Sources of resistance to cowpea bacterial blight disease in Nigeria] , Sources of resistance to cowpea bacterial blight disease in Nigeria

Journal Article 2010-03-18

Seed to plant transmission of Xanthomonas campestris pv. vignicola isolates in cowpea

Autor: Okechukwu, R.U. Ekpo, E.J.A. Okechukwu, O.C.

Seed transmission of Xanthomonas campestris pv. vignicola was investigated to ascertain the importance of seed as a primary source of inoculum for bacterial blight disease in cowpea. The study was carried out using seeds of five cowpea varieties (TVx 12349, IT86D-721, IT82D-889, Ife Brown and TVx...

Enlace original: https://cgspace.cgiar.org/handle/10568/87973

Investigación en Agricultura

VIGNA UNGUICULATA

COWPEAS

VIRULENCE

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Okechukwu, R.U. , Ekpo, E.J.A. , Okechukwu, O.C. , [Seed to plant transmission of Xanthomonas campestris pv. vignicola isolates in cowpea] , Seed to plant transmission of Xanthomonas campestris pv. vignicola isolates in cowpea

Journal Article 2008

Survival of Xanthomonas campestris pv. vignicola in infested soil, cowpea seed and cowpea debris

Autor: Okechukwu, R.U. Ekpo, E.

Field and laboratory experiments were conducted in the Sudan savanna site of IITA's experimental Station, Minjibir, Kano State, to study the survival of Xanthomonas campestris pv. vignicola in infested soil, cowpea seed, and debris. The experiment was conducted in a randomised complete block desi...

Enlace original: https://cgspace.cgiar.org/handle/10568/90917

Investigación en Agricultura

BACTERIAL BLIGHT

VIGNA UNGUICULATA

COWPEAS

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Okechukwu, R.U. , Ekpo, E. , [Survival of Xanthomonas campestris pv. vignicola in infested soil, cowpea seed and cowpea debris] , Survival of Xanthomonas campestris pv. vignicola in infested soil, cowpea seed and cowpea debris

Journal Article 2011-09

Genetic gain in yield and agronomic characteristics of cowpea cultivars developed in the Sudan savannas of Nigeria over the past three decades

Autor: Kamara, A.Y. Tefera, H. Ewansiha, S.U. Ajeigbe, Hakeem A. Okechukwu, R.U. Boukar, O. Omoigui, L.O.

A field study was conducted to determine the rate of genetic improvement in grain and fodder yields and associated agronomic and physiological changes of determinate and semideterminate cowpea [Vigna unguiculata (L.) Walp.] genotypes developed in the Nigerian Sudan savannas in 1974 to 2004. Resul...

Enlace original: https://cgspace.cgiar.org/handle/10568/82675

Investigación en Agricultura

COWPEAS

FODDER

CROP YIELD

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Kamara, A.Y. , Tefera, H. , Ewansiha, S.U. , Ajeigbe, Hakeem A. , Okechukwu, R.U. , Boukar, O. , Omoigui, L.O. , [Genetic gain in yield and agronomic characteristics of cowpea cultivars developed in the Sudan savannas of Nigeria over the past three decades] , Genetic gain in yield and agronomic characteristics of cowpea cultivars developed in the Sudan savannas of Nigeria over the past three decades

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Resultados de búsqueda

Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades

Sources of resistance to cowpea bacterial blight disease in Nigeria

Seed to plant transmission of Xanthomonas campestris pv. vignicola isolates in cowpea

Survival of Xanthomonas campestris pv. vignicola in infested soil, cowpea seed and cowpea debris

Genetic gain in yield and agronomic characteristics of cowpea cultivars developed in the Sudan savannas of Nigeria over the past three decades

Descubre y comparte nuestro conocimiento público

Resultados de búsqueda

Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades

Sources of resistance to cowpea bacterial blight disease in Nigeria

Seed to plant transmission of Xanthomonas campestris pv. vignicola isolates in cowpea

[S10ArtOkechukwuSeedNothomDev.pdf]

Survival of Xanthomonas campestris pv. vignicola in infested soil, cowpea seed and cowpea debris

Genetic gain in yield and agronomic characteristics of cowpea cultivars developed in the Sudan savannas of Nigeria over the past three decades