Resultados de búsqueda - "Nigeria"

Yield, N uptake and N utilization of early maturing, drought and striga-tolerant maize varieties under low N conditions por Kamara, A., Ewansiha, S.U., Tofa, A.I.

“…This study evaluated the tolerance of selected early maturing drought and Striga-tolerant maize cultivars to low N conditions in Northern Nigeria. The cultivars were evaluated at 30 and 100 kg N ha−1. …”
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Agricultural policies for sustainable management and use of natural resources in Africa por International Institute of Tropical Agriculture, Food and Agriculture Organization of the United Nations

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Breeding cowpea for resistance to insect pests: attempted crosses between cowpea and Vigna vexillata por Fatokun, C.A.

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Relationships between leaf trichome characteristics and field resistance to cassava green mite (Mononychellus tanajoa (Bondar) por Nukenine, E.N., Dixon, Alfred G.O., Hassan, A.T., Zalom, F.G.

“…Experiments were conducted at Ibadan, Nigeria to assess the effect of leaf trichome characteristics (pubescence intensity index, length, and orientation) on field resistance of cassava to the green spider mite, Mononychellus tanajoa (Bondar). …”
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Effect of inter-planting Gmelina arborea with food crops on soil condition por Ojeniyi, S.O.

“…Se investigó, en tres Ingares de Nigeria del Sur, el efecto del plantío asociado de un árbol, Gmelina arborea Roxbg con cultivos alimenticios, sobre la fertitilidad del suelo. …”
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Technical Advisory Committee Twenty-Sixth Meeting, 23-30 June 1981: Report of the Meeting por CGIAR Technical Advisory Committee

“…Report of the 26th meeting of TAC held June 23-31, 1981 at IITA in Ibadan, Nigeria, Ralph Cummings presiding. TAC approved a statement on its role in the CGIAR, to be considered in the Second System Review. …”
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CGIAR International Centers Week, Washington, D.C., November 3-6, 1986: Main Conclusions Reached and Decisions Taken por CGIAR Secretariat

“…Warren Baum discussed his newly published history of the CGIAR. Bukar Shaib of Nigeria delivered the second Crawford Memorial Lecture on 'Hope for African Agriculture.' …”
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Respuesta del ñame espino a diferentes densidades de siembra y altura de espalderas: densidades de siembra en Dioscorea rotundata por Tamara Morelos, Ricardo Enrique, Luna Castellanos, Lily Lorena, Espitia Montes, Amaury Aroldo, Novoa Yanez, Rafael Segundo, Regino Hernandez, Sol Mara, Ossa Albis, Victor Alfonso De la

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Licensing of public plant varieties: the case of CSIR por Kuhlmann, Katrin, Nalinya, Adron Naggayi, Botey, Mireku, Puozaa, Doris Kanvenaa, Gichuru, Lilian, Ojiewo, Chris Ochieng

“…These include an Annotated Guide on Flexible Licensing Models and Agreements, which outlines various options for structuring licensing agreements and includes examples of potential provisions; Tanzania and Nigeria Guidebooks for Regulatory Aspects of Disseminating Public Varieties,2 which examine the regulatory frameworks in both countries and their relevance to the licensing of public varieties; and Model Plant Variety Licensing Agreements tailored to the specific regulatory environments of Tanzania and Nigeria. …”
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A USA Africa collaborative strategy for identifying, characterising and developing maize germplasm with resistance to aflatoxin contamination por Menkir, A., Brown, R.L., Bandyopadhyay, Ranajit, Chen, Z.Y., Cleveland, T.E.

“…Following confirmation tests in the laboratory, lines with consistently low aflatoxin levels will be inoculated with A. flavus in the field in Nigeria to identify lines resistant to strains specific to both US and West Africa. …”
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Responses of maize hybrids developed for drought tolerance to low soil nitrogen por Meseka, S.K., Menkir, A., Elhassan, A., Ibrahim, S.S., Ajala, S., Kamara, A.

“…Ninety-six hybrids along with four checks, arranged in a 10 x 10 triple lattice design, were evaluated under both low and high N at Mokwa, Nigeria, in the rainy season in 2002 and 2003. Genotype x nitrogen interaction was highly significant (P 0.01) for all traits, except the second leaf death score. …”
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Influence of leaf age, soil moisture, VPD and time of day on leaf conductance of various Musa genotypes in a Humid Forest Moist Savanna transition site por Ekanayake, I.J., Ortíz, R., Vuylsteke, D.R.

“…The irradiance levels increased three-fold while leaf to air vapour pressure deficit levels increased two- to four-fold from morning to afternoon during the sampling period in a field site located in the humid forest-moist savanna transition zone of Nigeria. Conductance values were reduced in older, and senescing leaves relative to the young and mature leaves both in the morning and in the afternoon. …”
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Nitrogen fertilizer management effects on maize grain quality in the West African moist savanna por Oikeh, S.O., Kling, J.G., Okoruwa, A.E.

“…In 1993 and 1994, five maize cultivars under four N levels (0, 30, 60, and 120 kg ha- ') were evaluated at Zaria (11° U' N), northern Nigeria, on a Plinthustalf (fiue-Ioamy isohyperthermic). …”
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Promising high-yielding tetraploid plantain-bred hybrids in west Africa por Tenkouano, A., Lamien, Niéyidouba, Agogbua, J., Amah, D., Swennen, Rony L., Traoré, S., Thiemele, D., Aby, N., Kobenan, K., Gnonhouri, G., Yao, N., Astin, G., Sawadogo-Kabore, S., Tarpaga, V., Issa, W., Lokossou, B., Adjanohoun, A., Amadji, G.L., Adangnitode, S., Igue, K.A.D., Ortíz, R.

“…The goal of this research and development (R&D) undertaken was assessing the development and dissemination of two plantain hybrids PITA 3 and FHIA 21 bred in the 1980s by the International Institute of Tropical Agriculture (IITA, Nigeria) and the Fundación Hondureña de Investigación Agrícola (FHIA, Honduras), respectively. …”
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Alley cropping with Leucaena leucocephala (Lam) de Wit and Acioa barteri (Hook F.) Engl. por Siaw, D.E.K.A., Kang, B.T., Okali, D.U.U.

“…The trial was carried out on an Alfisol in the humid zone of southwestern Nigeria. Hedgerows were established in 1983, using 4 m interhedgerow spacing and pruned to 25 cm height during cropping. …”
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Exploring genetic diversity and disease response of cultivated rice accessions (Oryza spp.) against Pyricularia oryzae under rainfed upland conditions in Benin por Yelome, O.I., Audenaert, K., Landschoot, S., Dansi, A., Vanhove, W., Silué, D., Damme, P.V., Haesaert, G.

“…Therefore, the genetic and phenotypic variability of a set of 350 cultivated rice accessions originating from Africa (Benin, Mali and Nigeria, Ivory Coast etc.) was examined. Seventy-seven fluorescent amplified fragment polymorphism (AFLP) markers were used to gain insight into the genetic variation and to classify the germplasm collection. …”
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Analysis of population structure and genetic diversity reveals gene flow and geographic patterns in cultivated rice (O. sativa and O. glaberrima) in West Africa por Yelome, O.I., Audenaert, K., Landschoot, S., Dansi, A., Vanhove, W., Silué, D., Damme, P. van, Haes, G.

“…In this paper, the population structure and genetic diversity of 42 cultivated African rice (Oryza spp.) accessions originating from West Africa (Benin, Mali and Nigeria, Liberia etc.) were investigated using 20 simple sequence repeats (SSR) and 77 amplified fragment length polymorphisms (AFLP). …”
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Genetic Diversity of Selected Upland Rice Genotypes (Oryza sativa L.) for Grain Yield and Related Traits por Anyaoha, C., Adegbehingbe, F., Uba, U., Popoola, B., Gracen, V., Mande, S., Onotugoma, E., Fofana, M.

“…Seventy-seven upland rice genotypes including popular cultivars in Nigeria and introduced varieties selected from across rice-growing regions of the world were evaluated under optimal upland ecology. …”
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Pro-poor risk reduction strategy for HPAI control in backyard poultry in Indonesia: a project overview and approaches used por Unger, Fred, Mariner, Jeffrey C., Narrod, C., Syafrison, I., Sudarman, A., Arifin, B., Nuryartono, N., Sumiarto, B., Siregar, E.S.

“…Considering that Highly Pathogenic Avian Influenza (HPAI) in developing countries is not solely a veterinary problem, especially in backyard flocks, and an acceptable control can only be successful with the involvement of those small holders a research agenda was developed by an international expert team in collaboration with national partners from four African countries (Nigeria, Kenya, Ethiopia, Ghana) and Indonesia. The team includes veterinary and economic scientists. …”
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Geographic distribution and abundance of the Afrotropical subterranean scale insect Stictococcus vayssierei (Hemiptera: Stictococcidae), a pest of root and tuber crops in the Congo... por Doumtsop, A.R., Hanna, R., Tindo, M., Tata-Hangy, W.K., Fotso, A.K., Fiaboe, K.K.M., Fomena, A., Kemga, A., Normark, B.B.

“…It was not found on the sites surveyed in Chad and Nigeria. The pest occurred in the forest and the forest-savannah mosaic as well as in the savannah where it was never recorded before. …”
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