Resultados de búsqueda - "Nigeria"

Estimation of soybean grain yield from multispectral high-resolution UAV data with machine learning models in west Africa por Alabi, T.R., Abebe, A.T., Chigeza, G., Fowobaje, K.R.

“…We acquired multispectral images through a Sequoia® camera aboard a senseFly eBee X UAV from five variety trials during the 2020 growing season in Nigeria. UAV-based spectral bands, canopy height, vegetation indices (VI), and texture features were generated by gray level co-occurrence matrix (GLCM) and integrated to predict crop grain yield using five machine learning (ML) regression models, including Cubist, Extreme Gradient Boosting (XGBoost), Stochastic Gradient Boosting (GBM), Support vector machine (SVM), and Random Forest (RF). …”
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Opportunities for orphan crops: Expected economic benefits from biotechnology por Zambrano, Patricia, Wood-Sichra, Ulrike, Ruhinduka, Remidius D., Phillip, Dayo, Nin-Pratt, Alejandro, Komen, John, Kikulwe, Enoch Mutebi, Falck-Zepeda, José B., Dzanku, Fred M., Chambers, Judith A.

“…This paper focuses on case studies involving insect-resistant cowpea in Nigeria and Ghana; disease-resistant cassava in Uganda and Tanzania; and disease-resistant banana in Uganda. …”
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Hadithi za ufanisi kuhusu matumizi ya mchanganyiko wa mbinu za kuhifadhi rutuba ya udongo. Sauti za wakulima kutoka Wilaya ya Babati, Tanzania por Kihara, Job Maguta, Kinyua, Michael, Massam, Jonus, Pallagjo, Rose, Songoyani, Inot, Kyekaka, Jetrida

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Genetic variability and genotype by environment interaction of two major cassava processed products in multi-environments por Aghogho, C.I., Eleblu, S.J.Y., Bakare, M.A., Kayondo, S.I., Asante, I., Parkes, Elizabeth Y., Kulakow, Peter A., Offei, S., Rabbi, I.Y.

“…Sixty-seven advanced breeding genotypes from the International Institute of Tropical Agriculture (IITA) were evaluated across eight environments in Nigeria. Root conversion rate means across trials ranges from 14.72 to 22.76% for gari% and 16.96–24.24% for fufu%. …”
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Seizing opportunity towards sustainable rice cultivation in sub-Saharan Africa por Ibrahim, A., Saito, Kazuki, Kokou, A., Johnson, J.-M., Diagne, M., Fagnombo, D.J., Felix, F., Sylvia, B.O., Martial, H.

“…Data were collected from 2,060 farmers in irrigated lowland (IL), rainfed lowland (RL), and rainfed upland (RU) rice production systems across two agroecological zones (semi-arid and subhumid) in the 2018/19 wet season at 18 sites in Burkina Faso, Ghana, Nigeria, Senegal, and Tanzania. Average yields were 4,952, 2,988, and 1,816 kg ha−1 in IL, RL, and RU. …”
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Genotype-environment-interaction and stability of root mealiness and other organoleptic properties of boiled cassava roots por Uchendu, U.K., Njoku, D., Ikeogu, Ugochukwu N., Dzidzienyo, D., Tongoona, Pangirayi, Offei, S., Egesi, Chiedozie N.

“…Experiments were conducted using an alpha-lattice design with three replications for two years in three locations in Nigeria. The analysis of variance revealed a significant influence of genotype, environment, and GEI on the performance of genotypes. …”
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Establishing the linkage between Eba's instrumental and sensory descriptive profiles and their correlation with consumer preferences: implications for cassava breeding por Alamu, Emmanuel Oladeji, Teeken, Béla, Ayetigbo, Oluwatoyin, Adesokan, Michael, Kayondo, Ismail, Chijioke, Alamu Ugo, Madu, Tessy, Okoye, Benjamin, Abolore, Bello, Njoku, Damian, Rabbi, Ismail, Egesi, Chiedozie N., Ndjouenkeu, Robert, Bouniol, Alexandre, Sousa, Kauê de, Dufour, Dominique, Maziya-Dixon, Busie

“…Gari and eba, forms of cassava semolina, are mainly consumed in Nigeria and other West African countries. This study aimed to define the critical quality traits of gari and eba, to measure their heritability, to define medium and high throughput instrumental methods for use by breeders, and to link the traits with consumer preferences. …”
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Target capture sequencing for the first Nigerian genotype I ASFV genome por Adeola, A.C., Luka, P.D., Xiang-Xiang Jiang, Zheng-Fei Cai, Oluwole, O.O., Xian Shi, Oladele, B.M., Olorungbounmi, T.O., Boladuro, B., Omotosho, O., Okoro, V.M.O., Dawuda, P.M., Olaogun, S.C., Sanke, O.J., Hai-Bing Xie, Bishop, Richard P., Jianlin Han, Jianbo Li, Ya-Ping Zhang, Min-Sheng Peng

“…This provides insight into the origin and relationship of ASFV strains from Nigeria and Italy. The study reports for the first time the determination of near-complete genomes of ASFV using in-solution hybrid capture sequencing, which represents an important advance in understanding the global evolutionary landscape of ASFVs.…”
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Correlate the cyanogenic potential and dry matter content of cassava roots and leaves grown in different environments por Alamu, E.O., Dixon, A., Adesokan, M., Maziya-Dixon, B.

“…Genetic Gain Assessment (GGA) cassava genotypes (N = 400) selected for the Uniform Yield Trial (UYT) breeding stage were planted under IVS (Dry season in Inland Valley Hydromorphic area) and Upland (rain-fed conditions) in two locations of IITA Research Farms, namely; Ibadan (IVS and Upland) and Mokwa (Upland) in Nigeria. The CNP content of cassava leaves in IVS, Mokwa, and Upland ranged from 3.39 to 272.16 mg/100 g, 4.28 to 228.72 mg/100 g, and 13.13 to 127.39 mg/100 g, respectively. …”
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Heterotic grouping of provitamin A-enriched maize inbred lines for increased provitamin A content in hybrids por Sayadi Maazou, A.R., Gedil, M., Adetimirin, V., Unachukwu, N., Mengesha Abera, W., Meseka, S.K., Menkir, A.

“…The resulting 120 testcrosses hybrids were evaluated for two years at four locations in Nigeria. Results The two testers effectively classified the inbred lines into two heterotic groups. …”
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qSUB2: A novel QTL with positive epistasis with SUB1 locus enhances submergence tolerance in rice por Akintayo, O., Daniel, I., Afeez, S., Jolayemi, O., Semwal, V., Venuprasad, R.

“…The screening for submergence was conducted at the Africa Rice Center (AfricaRice) station in Ibadan, Nigeria during 2016–2018. The three mapping populations were genotyped with single nucleotide polymorphic markers either on the Kompetitive allele specific PCR or the DArTseq platforms. …”
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Impact of nitrogen-fixation bacteria on nitrogen-fixation efficiency of Bambara groundnut [Vigna subterranea (L) Verdc] genotypes por Bitire, T.D., Abberton, M., Tella, E.O., Edemodu, A., Oyatomi, O., Babalola, O.O.

“…Pot experiments were carried out at the International Institute of Tropical Agriculture (IITA) in the glasshouse between August to December 2018/2019 cropping season in Ibadan, Nigeria. Field studies were also performed in two different agroecological zones, "Ibadan and Ikenne" between August and December of 2019/2020 cropping season. …”
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NPS book launch: Political Economy and Policy Analysis (PEPA) Sourcebook - Soundcloud por Breisinger, Clemens, Mockshell, Jonathan, Resnick, Danielle, Quintero, Marcela, Nicol, Alan, Simbine, Antonia, Morrison, Jamie, Cantillo, Marco V. Sánchez, Iyob, Biniam, Karachiwalla, Naureen

“…A G E N D A Opening remarks Clemens Breisinger, Lead, CGIAR Initiative on National Policies and Strategies (NPS) and Country Program Leader, Kenya, IFPRI PEPA Sourcebook for food systems transformation: Framework, analytical tools, and case studies Jonathan Mockshell, Research Scientist – Senior Agricultural Economist, Alliance of Bioversity International and CIAT Danielle Resnick, Senior Research Fellow, IFPRI Systems Transformation Research Group Perspective on PEPA Marcela Quintero, Senior Director, Food Systems Transformation Science Group, CGIAR and Associate Director General, Research Strategy, and Innovation, Alliance of Bioversity International and CIAT Frank Place, Senior Advisor, Director General Office, IFPRI Alan Nicol, Co-lead, CGIAR Initiative on National Policies and Strategies (NPS) and Principal Researcher, IWMI Panel Discussion: Evidence based insights from political economy and policy analysis for national policies and strategies Antonia Simbine, Director General, Nigeria Institute of Social and Economic Research (NISER) Jamie Morrison, Senior Advisor, Policy and External Relations, GAIN Marco V. …”
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Impacts of Africa RISING in Malawi por Haile, Beliyou, Azzarri, Carlo, Boukaka, Sedi Anne, Vitellozzi, Sveva, Chikowo, Regis

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Serological and RT‑PCR evaluation of African yam bean (Sphenostylis stenocarpa (Hochst ex. A. Rich) Harms) accessions to viral resistance under field condition por Jeffrey, I., Kehinde, I., Ayo-John, E., Bankole, P., Abberton, M., Kumar, P.L., Adegboyega, T., Oyatomi, O.

“…The AYB accessions were planted using a randomized complete block design on the experimental field at the International Institute of Tropical Agriculture (IITA) Ibadan, Nigeria. Viral disease severity was assessed at 10, 12, 14, 16 and 18 weeks after planting (WAP) based on disease symptoms using disease severity index on visual scale of 1--5. …”
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Agricultural mechanisation and child labour in developing countries por Vos, Rob, Takeshima, Hiroyuki

“…The present study aims to fill some of this void by studying the evidence from comparable farm household survey data in seven developing countries, including three in Asia (India, Nepal, and Vietnam) and four in sub-Saharan Africa (Ethiopia, Ghana, Nigeria, and Tanzania). Various key findings emerge. …”
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Macro-economic models: how to spend Uganda’s expected oil revenues? A CGE analysis of the agricultural and poverty impacts of spending options por Wiebelt, Manfred, Pauw, Karl, Matovu, John Mary, Twimukye, Evarist, Benson, Todd

“…This is comparable to the level of oil reserves in African countries such as Chad (0.9 billion barrels), Republic of the Congo (1.9 billion barrels), and Equatorial Guinea (1.7 billion barrels) but far short of Angola (13.5 billion) and Nigeria (36.2 billion) (World Bank 2010). Using a conservative reserve scenario of 800 million barrels, peak production, likely to be reached by 2017, is estimated by the World Bank to range from 120,000 to 140,000 barrels per day, with a production period spanning 30 years. …”
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Spatially distributed freshwater demand for electricity in Africa por Gerbens-Leenes, P. W., Vaca-Jiménez, S. D., Holmatov, Bunyod, Vanham, Davy

“…Countries with high annual WW amounts include Egypt (8937 Mm3 ), Ghana (7893 Mm3 ), Zambia (5262 Mm3 ), Mozambique (2602 Mm3 ), Nigeria (2309 Mm3 ) and South Africa (1068 Mm3 ). …”
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High-resolution crop-type mapping in northern Ghana por Alabi, Tunrayo, Muthoni, Francis, Uponi, John, Alabi, William, Oluwaleye, Josiah

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Off-grid cooling: Experimental evaluation of solar powered cold storage and evaporative coolant por Salaudeen, Kamaldeen Oladimeji, Takeshima, Hiroyuki, Yamauchi, Futoshi

“…Tomato (UTC variety), Orange (Dan Benue variety) and Carrot (Orange Chantenay) were procured from the international fruits market in Duste, Jigawa State, Nigeria. The products were sorted and stored in three different storage conditions: room temperature (RT), solar powered cool room (SCR), and wall-in-wall evaporative coolant. …”
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