Resultados de búsqueda - "Nigeria"

Cultivar and nitrogen fertilization effects on Striga infestation and grain yield of early maturing tropical maize por Kamara, A., Menkir, A., Chikoye, David, Omoigui, L.O., Ekeleme, F.

“…The experiment was conducted in Mokwa and Abuja, Nigeria, during the 2004 and 2005 cropping seasons. …”
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Inclusion of gender in Africa’s climate change policies and strategies por Nyasimi, Mary, Ayanlade, Ayansina, Mungai, Catherine, Derkyi, M., Jegede M.O.

“…The countries are Kenya, Uganda, Tanzania in East Africa, and Ghana and Nigeria in West Africa. Drawing upon a common framework/guideline, we examined commonality in policies, while recognizing the complexity in the social, economic and ecological systems of each country. …”
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Testcross performance and diversity analysis of white maize lines derived from backcrosses containing exotic germplasm por Menkir, A., Ingelbrecht, I.L., The, C.

“…Forty-one BC1F4 lines derived from these backcrosses and the recurrent parent were crossed with a common inbred tester (9071) and the progeny were evaluated at eight environments in Nigeria. The testcrosses × environment interaction mean square was not significant for all agronomic traits. …”
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Genetic variances and correlations in an early tropical white maize population after three cycles of recurrent selection for Striga resistance por Badu-Apraku, Baffour

“…Three hundred full-sib families within half-sib groups from cycle 3 of TZE-W Pop DT STR were evaluated under artificial Striga infestation in Ferkéssedougou, Côte d’Ivoire, 2002, and in Mokwa, Nigeria, 2003. Estimates of additive genetic variances were positive and moderate-to-large for all traits except lodging percentage. …”
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Regeneration of earthworm populations in a degraded soil by natural and planted fallows under humid tropical conditions por Tian, G., Olimah, J., Adeoye, G., Kang, B.

“…–cassava (Manihot esculenta Crantz) established in 1989 in a degraded Alfisol (Oxic paleustalf) in southwestern Nigeria. Compared to leaves of Chromolaena (3.3% N), N concentrations were lower in those of Senna and Acacia, and higher in Leucaena Acacia and Leucaena had higher polyphenol relative to the natural fallow (2%). …”
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Improvement of the physical fertility of a degraded Alfisol with planted and natural fallows under humid tropical conditions por Salako, F., Hauser, S., Babalola, O., Tian, G.

“…Topsoil (0–15 cm) bulk density, aggregate stability, soil dispersibility, water retention and infiltration were measured between 1989 and 1996 on an Alfisol under rehabilitation in southwestern Nigeria. The planted leguminous species were Pueraria phaseoloides, Senna siamea, Leucaena leucocephala, Acacia leptocarpa and A. auriculiformis. …”
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Maize yield determinants in farmer-managed trials in the Nigerian northern Guinea savanna por Carsky, R.J., Nokoe, S., Lagoke, S.T.O., Kim, S.

“…Farmer-managed tests of Striga hermonthica-resistant maize varieties were conducted in 1994 in a moderately intensified zone in the northern Guinea savanna of Nigeria. Field history, soil properties, current season fertility management, and crop management observations were recorded for 37 farmer-managed trials. …”
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Reproductive and staygreen trait response of maize hybrids, improved openpollinated varieties, and farmers local varieties to terminal drought stress por Kamara, A.Y., Menkir, A., Badu-Apraku, Baffour, Ibikunle, O.

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Rice mill waste as organic manure on a degraded Alfisol por Schulz, S., Tian, G., Oyewole, B., Bako, S.

“…An on-farm experiment was conducted in the northern Guinea savanna of Nigeria to evaluate the fertilizer effect of rice (Oryza sativa L.) mill waste (RMW) on a degraded Alfisol. …”
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Soil water depletion under various leguminous cover crops in the derived savanna of west africa por Salako, F.K., Tian, G.

“…Therefore, a study was carried out at Alabata, Ibadan, southwestern Nigeria, to evaluate the effects of leguminous cover crops on soil water suctions in 1993 and 1994 in order to assess the possibility of integrating them into the farming systems of the savanna zone of West Africa. …”
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Identification of promiscuous nodulating soybeans efficient in N2 fixation por Pulver, Edward L., Kueneman, E.A., Ranga-Rao, V.

“…When 400 diverse soybean lines were tested at five sites in Nigeria for the ability to nodulate with indigenous rhizobia, only 10 were highly promiscuous, that is, capable of forming an effective symbiosis at all sites. …”
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An impact assessment of IITAs benchmark area approach por Douthwaite, Boru, Baker, D., Weise, Stephan F., Gockowski, J., Manyong, Victor M., Keatinge, J.D.H.

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Development and regional deployment of streak virus resistant maize germplasm: an overview por Fakorede, M.A.B., Fajemisin, J., Ladipo, J., Ajala, S., Kim, S.K.

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Four Seasons of Learning and Engaging Smallholder Farmers: Progress of Phase 1. por Abate, Tsedeke

“…Progress made during this period was reviewed in 2011 at regional meetings held in ICRISAT-Patancheru, India (May 9-11 and Sept 5-6); Ibadan, Nigeria (16-18 May); and Lilongwe, Malawi (22-25 May). …”
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Field validation of intraspecific variation in phosphorus use efficiency and nitrogen fixation by provenances of Gliricidia sepium grown in low P soils por Sanginga, N., Danso, S., Zapata, F., Bowen, G.

“…The field experiment was conducted at Fashola (Guinea Savanna Zone), southwestern Nigeria. Large differences in growth occurred among the G. sepium provenances at both low and high P levels. …”
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Response of yam (Dioscorea rotundata Poir.) to various periods of weed interference in an intercropping with maize (Zea mays L.), okra (Abelmoschus esculentus L. Moench), and sweet... por Orkwor, G., Okereke, O., Ezedinma, C.I., Hahn, S., Ezumah, H., Akobundu, I.

“…The field trials were conducted for two cropping seasons at the research farm of the National Root Crops Institute, Umudike, Nigeria, 5° 29' N latitude and 7° 32' E on an altitude of 122 m above sea level to determine the critical period of weed interference in yam/maize/okra/sweet potato intercrop; assess the crop yield losses due to uncontrolled associated weeds; and assess the wrong timing of the removal of weeds and the ability of sweet potato to suppress weeds as a planofile in the mixture. …”
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Stratification and synthesis of crop–livestock production systems using GIS por Jagtap, S.S., Amissah-Arthur, A.A.

“…Potential for integrated crop-livestock systems remains untapped and/or knowledge of its existence is unknown for large parts of Nigeria. Using data from 36 case studies and georeferenced data on cropping intensities and livestock population for the entire country, it was possible to predict emerging crop-livestock systems using GIS. …”
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Arbuscular mycorrhizal fungi (AMF) respond to rhizobial inoculation and cropping systems in farmers fields in the Guinea savanna por Sanginga, N., Carsky, R.J., Dashiell, Kenton E.

“…Pot and field experiments were conducted for 2 years using 13 farmers' fields with different cropping histories in two agroecological zones (Zaria, northern Guinea savanna and Zonkwa, southern Guinea savanna) in Nigeria. We quantified the influence of cropping systems and rhizobial inoculation on plant growth, mycorrhizal colonization and diversity of promiscuous soybean and maize grown in rotation. …”
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Plantaciones de pecan (Carya illinoinesis): Fuente o sumidero de gases traza? por Awang, E.D., Cosentino, Vanina Rosa Noemi, Cambareri, Gustavo Sebastián

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Proyecto Soporte de Decisiones para la incorporación y ampliación del Manejo Sustentable de Tierras (SD MST) : Memoria y Productos de la Comisión Ad hoc para el Mapeo de Sistemas d... por Bran, Donaldo Eduardo, Garcia, Cesar Luis, Corso, Maria Laura

“…De este Proyecto coordinado por FAO participan 15 países: Argentina, Colombia, Ecuador, Panamá, Lesoto, Marruecos, Nigeria, Túnez, Bangladés, China, Filipinas, Tailandia, Bosnia y Herzegovina, Turquía y Uzbekistán.…”
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