Search Results - "Nigeria"

Innovation in banana value chain development in Metema district, northwestern Ethiopia: IPMS experiences by Berhe, Kahsay, Puskur, Ranjitha, Teka, W., Hoekstra, Dirk, Tegegne, Azage

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Heterotic responses among crosses of IITA and CIMMYT early white maize inbred lines under multiple stress environments by Badu-Apraku, Baffour, Fakorede, M.A.B., Gedil, Melaku A, Talabi, A.O., Annor, B., Oyekunle, M., Akinwale, R., Fasanmade, Y., Akaogu, I.C., Aderounmu, M.

“…Seventeen early maturing maize inbreds from IITA and CIMMYT were used as parents to produce 136 diallel crosses which were evaluated along with four checks in contrasting environments atfour locations for 2 year in Nigeria. The objectives of the study were to (i) examine the combin- ing ability of the lines under drought, low soil nitrogen (low N), optimal and across environments; (ii) classify the inbreds into heterotic groups using the specific combining ability (SCA) effects of grain yield, heterotic group’s specific and general combining ability (HSGCA), the heterotic grouping based on general combining ability (GCA) of multiple traits (HGCAMT) and the molecular-based genetic distance methods; (iii) compare the efficiencies of the four heterotic grouping methods in classifying the inbreds and identifying the best testers; and (iv) examine the performance of the inbreds in hybrid combinations across environments. …”
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Determination of ploidy among yam (Dioscorea spp.) landraces in Kenya by flow cytometry by Muthamia, Z.K., Nyende, A.B., Mamati, Edward George, Ferguson, Morag E., Wasilwa, J.

“…Flow cytometry was used to estimate the ploidy level of 155 accessions of Kenyan yam including two checks, TDr.18544 a tetraploid and TDc.98136 an octoploid from International Institute of Tropical Agriculture (IITA), Nigeria. Also included in the study were Dioscorea dumetorum Pax, Dioscorea asteriscus Burkill and Dioscorea schimperiana Kunth which are yam wild relatives. …”
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Response of weeds and soil microorganisms to imazaquin and pendimethalin in cowpea and soybean by Chikoye, David, Abaidoo, Robert C., Fontem, Lum. A.

“…Field studies were conducted in 2005 and 2006 in Zaria, Nigeria, to evaluate the response of weeds and soil microorganisms to imazaquin applied at 0.05, 0.10, 0.20 and 0.40 kg a.i.…”
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Relationships between normalized difference vegetation index (NDVI) and other traits of tropical testcross maize (Zea mays L.) hybrids under drought and wellwatered conditions by Adebayo, M.A., Menkir, A., Hearne, S.

“…A trial composed of 44 maize hybrids comprising 41 testcrosses and 3 hybrid checks were evaluated under simulated drought stress and well-watered conditions at Ikenne in the rainforest agro-ecology of Nigeria during the dry seasons of 2010 and 2011. Each trial was laid out in the field in a 4 x 11 ?…”
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Response of cowpea to sowing date and maize plant population in a Sudan savannah environment by Ewansiha, S.U., Kamara, A., Chiezey, U.F., Onyibe, J.E.

“…A field trial was conducted to investigate the performance of contrasting cowpea cultivars when sown at different dates under varying maize plant populations at Minijibir in the Sudan savannah of Nigeria in 2008 and 2009. The trial was laid out in a randomized complete block design with split-split-plot arrangement and replicated four times. …”
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Expanding the application of cassava value chain technologies through UPoCA project by James, B., Bramel-Cox, P.J., Witte, E.R., Asiedu, R., Watson, D., Okechukwu, R.

“…UPoCA project covers DR Congo, Ghana, Malawi, Mozambique, Nigeria, Sierra Leone, and Tanzania. UPoCA project draws on prior research results to increase on-farm cassava productivity and value adding processing for markets. …”
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Morphological and molecular characterisation and diagnostics of some species of Scutellonema Andrassy, 1958 (Tylenchida: Hoplolaimidae) with a molecular phylogeny of the genus by Berg, E. van den, Tiedt, L.R., Coyne, Danny L., Ploeg, A.T., Navas-Cortes, J.A., Roberts, P.A., Yeates, G.W., Subbotin, S.A.

“…In this study, we provide morphological and molecular characterisation of S.brachyurus from the USA and South Africa, S. bradys from Nigeria and three unidentified species from California, USA, New Zealand and Burkina Faso. …”
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Genetic analysis of grain yield and other traits of early maturing maize inbreds under drought and wellwatered conditions by Oyekunle, M., Badu-Apraku, Baffour

“…One hundred and fiftyhybrids obtained by crossing 30 inbreds in sets using the North Carolina DesignII plus six checks were evaluated under drought and well-watered conditions for2 years at three locations in Nigeria. The objectives of the studies were to (i)determine the mode of gene action controlling grain yield and other importantagronomic traits of selected early inbred lines, (ii) examine the relationshipbetween per se performance of inbreds and their hybrids and (iii) identify appropriatetesters for maize breeding programmes in WCA. …”
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Simulating planting date and cultivar effects on dryland maize production using CERESmaize model by Jibrin, J. M., Kamara, A., Ekeleme, F.

“…Data on two open-pollinated maize cultivars (TSB-SR and TZE-COMP4) sown on different dates (June 29th, July 13th, July 21st and July 28th) in 2006 and 2007 at Azir (11° 01.820´ N, 12°37.714´ E; 441 m) and Damboa (11° 10.379´; 12° 47.145´E; 396 m) in the Sudan Savanna of Nigeria were used in running the model. Experimental data from Azir in 2006 was used to calibrate the model, while the data for 2007 at Azir 2006 and 2007 at Damboa were used for model validation. …”
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Impact of inadequate regulatory frameworks on the adoption of bio-fertilizer (eg PGPR) technologies: a case study of sub-Saharan Africa by Masso, C., Jefwa, J.M., Jemo, M., Thuita, Moses N., Tarus, D., Vanlauwe, Bernard

“…Based on a stepwise assessment of 66 bio-fertilizer products found in Ethiopia, Kenya, and Nigeria in 2009-2011, in more than 90% of cases, product composition didn’t match indications on the product labels or label claims related to product benefits were not supported by our research results. …”
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A thermostable presentation of the live, attenuated peste des petits ruminants vaccine in use in Africa and Asia by Mariner, Jeffrey C., Gachanja, J., Tindih, H.S., Toye, Philip G.

“…The present research applied the rinderpest lyophilization method to the attenuated Nigeria 75/1 PPR vaccine strain, and measured thermostability in accelerated stability tests (AST) at 37 °C. …”
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Relationships among traits of tropical early maize cultivars in contrasting environments by Badu-Apraku, Baffour, Akinwale, R.O., Ajala, S.O., Menkir, A., Fakorede, M.A.B., Oyekunle, M.

“…Two sets of experiments were conducted at four locations in Nigeria for 2 yr. In the first experiment, cultivars were evaluated under low (30 kg ha−1) and high (90 kg ha−1) N and drought and well-watered environments in the second experiment. …”
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Expanding the application of cassava value chain technologies through UPoCA project by James, B., Bramel-Cox, P.J., Witte, E.R., Asiedu, Robert, Watson, D., Okechukwu, R.U.

“…UPoCA project covers DR Congo, Ghana, Malawi, Mozambique, Nigeria, Sierra Leone, and Tanzania. UPoCA project draws on prior research results to increase on-farm cassava productivity and value adding processing for markets. …”
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Annual report 2016: CGIAR Research Program on Agriculture for Nutrition and Health by CGIAR Research Program on Agriculture for Nutrition and Health

“…Following a successful Nigeria pilot stage, the aflasafe™ approach for managing aflatoxins consistently reduced groundnut and maize aflatoxin contamination by at least 80 percent, with plans and investments to expand the approach to 11 other African countries. …”
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The pattern of grain yield response of normal and quality protein maize cultivars in stress and nonstress environments and nonstress environments by Badu-Apraku, Baffour, Lum, A.F.

“…Benth infestation and Striga-free environments in Nigeria from 2006 to 2008 to identify stable and high yielding cultivars. …”
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Evaluation of local maize (Zea mays L.) varieties from Burkina Faso as source of tolerance to drought by Olaoye, G., Menkir, A., Ajala, S.O., Jacob, S.

“…Methodology and results: Fourteen local maize varieties from Burkina Faso and a hybrid check were evaluated under well-watered condition and drought stress imposed by withdrawing irrigation from 23 days before 50% anthesis until harvest at Ikenne in Nigeria in 1999 and 2000. Moisture deficiency significantly (P<0.05) reduced the number of ears per plant by 22% and grain yield by 53%. …”
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Evaluation of tropical maize hybrids under drought stress by Oyekale, K.O., Daniel, I.O., Kamara, A.Y., Adegbite, A.E., Ajala, M.O.

“…Field evaluation was done at a rain forest location (Ikenne, Ogun State, Nigeria) on irrigated plots under well-watered and water-deficit conditions during the dry period of 2002/2003 cropping season. …”
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Yield potential and yield stability of maize hybrids selected for drought tolerance by Meseka, S.K., Menkir, A., Ibrahim, A.

“…Methodology and results: Six hybrids, each formed by crossing drought tolerant x tolerant (TxT), susceptible x susceptible (SxS), T x S and S x T inbred lines and 4 checks were selected from 100 hybrids tested for two years under severe drought, mild drought, low N and high N; and for four years under optimal conditions, making a total of 12 environments in Nigeria. Combined analysis of variance showed that environments, genotypes and genotype-by-environment (GE) interaction effects were highly significant, suggesting that the hybrids responded differently relative to each other to a change in environment. …”
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Response to low soil nitrogen stress of S1 maize breeding lines selected for high vertical rootpulling resistance by Kamara, A.Y., Menkir, A., Kureh, I., Omoigui, L.O.

“…Poor soil fertility, especially with low levels of nitrogen (N), is a major constraint to productivity and the production of maize in the Guinea Savanna of Nigeria. To improve efficiency of the maize to use N in the Savanna, maize genotypes with improved root systems to exploit the available N from the soil and to give optimum yields even at low N levels are required. …”
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