The yield gap and variability in maize under smallholder systems in two agroecologies in northern Ghana were evaluated using a decision support system for agrotechnology transfer (DSSAT). The model was used to assess (1) the potential yield of maize (YPOT), (2) water-limited exploitable maize yie...
MacCarthy, Dilys S.
,
Adiku, Samuel G.K.
,
Freduah, B.S.
,
Kamara, A.Y.
,
Narh, S.
,
Abdulai, A.L.
,
[Evaluating maize yield variability and gaps in two agroecologies in northern Ghana using a crop simulation model]
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Evaluating maize yield variability and gaps in two agroecologies in northern Ghana using a crop simulation model
Soybean can contribute to soil N, which may partly be used to improve maize production in northeast
Nigeria. However, the efficiency of soybean to fix N can be limited by soil P deficiency. This study
evaluated the effect of P application and soybean cultivars on dry matter and grain yield of sub...
Kamara, A.Y.
,
Kwari, J.
,
Ekeleme, F.
,
Omoigui, L.O.
,
Abaidoo, R.C.
,
[Effect of phosphorus application and soybean cultivar on grain and dry matter yield of subsequent maize in the tropical savannas of north eastern Nigeria]
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Effect of phosphorus application and soybean cultivar on grain and dry matter yield of subsequent maize in the tropical savannas of north eastern Nigeria
Despite the recent release of several improved varieties of groundnut in Nigeria the productivities have not increase significantly due to lack of commensurate recommendation in agronomic practices. Two groundnut varieties were evaluated for their response to different plant density and phosphoru...
Ajeigbe, Hakeem A.
,
Kamara, A.Y.
,
Kunihya, A.
,
Inuwa, A.H.
,
Adinoyi, A.
,
[Response of groundnut to plant density and phosphorous application in the Sudan savanna zone of Nigeria]
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Response of groundnut to plant density and phosphorous application in the Sudan savanna zone of Nigeria
Groundnut production in northeast Nigeria is constrained by low level of soil phosphorus. This study evaluated four groundnut varieties for their response to P fertilization in two Nigerian agro-ecological zones (Sudan and Northern Guinea savanna) during 2005 and 2006. The experimental design was...
Kamara, A.Y.
,
Ekeleme, F.
,
Kwari, J.D.
,
Omoigui, L.O.
,
Chikoye, D.
,
[Phosphorus effects on growth and yield of groundnut varieties in the tropical savannas of northeast Nigeria]
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Phosphorus effects on growth and yield of groundnut varieties in the tropical savannas of northeast Nigeria
The study examined the socio-economic characteristics of participating seed farmers in a community-based seed production scheme organized by the project, Promoting Sustainable Agriculture in Borno State (PROSAB). In addition, it determined the technical efficiency of resource use in PROSAB seed f...
Amaza, P.S.
,
Udoh, E.J.
,
Abdoulaye, Tahirou
,
Kamara, A.Y.
,
[Analysis of technical efficiency among community-based seed producers in the savannas of Borno State, Nigeria]
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Analysis of technical efficiency among community-based seed producers in the savannas of Borno State, Nigeria
This paper evaluates the impact of the intervention of Promoting Sustainable Agriculture in Borno (PROSAB) project on the livelihoods of farminghouseholds in Borno State, Nigeria. Specifically, the paper identifies and provides information on farmers’ adoption of improved crop varietiesintroduced...
Bamire, S.A.
,
Abdoulaye, Tahirou
,
Amaza, P.
,
Tegbaru, A.
,
Alene, Arega D.
,
Kamara, A.Y.
,
[Impact of promoting sustainable agriculture in Borno (PROSAB) program on adoption of improved crop varieties in Borno State of Nigeria]
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Impact of promoting sustainable agriculture in Borno (PROSAB) program on adoption of improved crop varieties in Borno State of Nigeria
Striga hermonthica is a parasitic weed that attacks maize, sorghum and other staple cereal crops and has long been considered one of the greatest biotic constraints to cereal production in Africa. Use of resistant or tolerant maize varieties, a maize–legume rotation using trap crops that stimulat...
Kamara, A.Y.
,
Ellis-Jones, J.
,
Amaza, P.
,
Omoigui, L.O.
,
Helsen, J.
,
Dugje, I.Y.
,
Kamai, N.
,
Menkir, A.
,
White, R.W.
,
[A participatory approach to increasing productivity of maize through Striga hermonthica control in Northeast Nigeria]
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A participatory approach to increasing productivity of maize through Striga hermonthica control in Northeast Nigeria
The performances of plants and seedlings of 14 tropical-adapted, registered maize hybrids were evaluated under drought stress to assess genotype suitability for off-season planting and to identify parental materials for developing drought tolerant hybrids from locally adapted germplasm. Field eva...
Field studies were conducted in northeast Nigeria to evaluate the response ofearly and late-maturing maize varieties infested with natural populations ofStrigato different rates of nitrogen (N) fertilizer. There were significant reductions in thenumber of emergedStrigaat 120 kg N ha71for the earl...
Kamara, A.Y.
,
Ekeleme, F.
,
Omoigui, L.O.
,
Menkir, A.
,
Chikoye, D.
,
Dugje, I.Y.
,
Abdoulaye, Tahirou
,
Amaza, P.
,
[Influence of nitrogen fertilization on the performance of early and late maturing maize varieties under natural infestation with Striga hermonthica (Del.) Benth]
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Influence of nitrogen fertilization on the performance of early and late maturing maize varieties under natural infestation with Striga hermonthica (Del.) Benth
The aim of this study was to assess the influence of farmers` crop management practices on Striga infestation and maize grain yield. Sixty farmers` fields were randomly selected in nine communities across three savanna zones. About 35% of the farmers had cultivated their fields for over 10 years,...
Dugje, I.Y.
,
Kamara, A.Y.
,
Omoigui, L.O.
,
[Influence of farmers crop managemnt practices on Striga hermonthica infestation and grain yield of maize (Zea mays L.) in the savanna zones of northeast Nigeria]
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Influence of farmers crop managemnt practices on Striga hermonthica infestation and grain yield of maize (Zea mays L.) in the savanna zones of northeast Nigeria