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This paper generates an extrapolation suitability index (ESI) to guide scaling-out of improved maize varieties and inorganic fertilizers. The best-bet technology packages were selected based on yield gap data from trial sites in Tanzania. A modified extrapolation detection algorithm was used to g...


Muthoni, Francis K.Baijukya, Frederick P.Bekunda, Mateete A.Sseguya, H.Kimaro, Anthony A.Alabi, T.Mruma, S.Hoeschle-Zeledon, Irmgard[Accounting for correlation among environmental covariates improves delineation of extrapolation suitability index for agronomic technological packages]Accounting for correlation among environmental covariates improves delineation of extrapolation suitability index for agronomic technological packages

The areal extent and spatial distribution of evergreen forests in the tropical zones are important for the study of climate, carbon cycle and biodiversity. However, frequent cloud cover in the tropical regions makes mapping evergreen forests a challenging task. In this study we developed a simple...


Xiao, X.Biradar, Chandrashekhar M.Czarnecki, C.Alabi, T.Keller, M.[A simple algorithm for largescale mapping of evergreen forests in tropical America, Africa and Asia]A simple algorithm for largescale mapping of evergreen forests in tropical America, Africa and Asia

The agricultural sector in Nigeria provides a socio-economic resource base for exiting pervasive poverty, and transforming the economy. However, with the challenges posed by climate change through variability in rainfall, the agricultural livelihoods and poverty status of the population could be ...


Olayide, O.E.Alabi, T.[Between rainfall and food poverty: assessing vulnerability to climate change in an agricultural economy]Between rainfall and food poverty: assessing vulnerability to climate change in an agricultural economy

Poverty and malnutrition are persistent problems in Africa. Alleviation of these closely-related socioeconomic problems must be guided by knowledge of their spatial distribution and relationships to biophysical and development factors. Two country-wide surveys, one on rural livelihoods, poverty a...


Maziya-Dixon, B.B.Okechukwu, R.Kormawa, P.M.Legg, C.Ofodile, S.Alabi, T.[Report on mapping livelihood and nutrition in Nigeria using data from the national rural livelihoods survey and the national food consumption and nutrition survey]Report on mapping livelihood and nutrition in Nigeria using data from the national rural livelihoods survey and the national food consumption and nutrition survey

West Africa has experienced increases in cultivated lands over the last 50 years in order to meet increasing demand from rapidly growing populations. Most countries in the region still depend on agriculture as an important part of the economy. In most countries however agricultural productivity i...


Alabi, T.Xiao, X.Sonder, K.Biradar, Chandrashekhar M.Birte, J.Mbaye, Y.[Mapping and monitoring agricultural land use in West Africa]Mapping and monitoring agricultural land use in West Africa

Historical and recent aerial photograph and satellite images were analysed to study the change of land use/land cover and soil degradation in different agroecological zones of Nigeria and Benin. The sites were characterized by an expansion of farmland at the expense of forest and shrub, fallow an...


Junge, B.Alabi, T.Sonder, KaiMarcus, S.Abaidoo, R.C.Chikoye, D.Stahr, Karl[Use of remote sensing and GIS for improved natural resources management: case study from different agroecological zones of West Africa]Use of remote sensing and GIS for improved natural resources management: case study from different agroecological zones of West Africa

Several alternative options have been used for varietal identification. However most of the traditional methods have inherent uncertainty levels and estimates often have wide confidence intervals. In an attempt to circumvent traditional survey-based measurement errors in varietal identification, ...


Girma Tessema, G.Rabbi, Ismail Y.Olanrewaju, A.S.Alaba, O.Kulakow, P.A.Alabi, T.Ayedun, B.Abdoulaye, TahirouAssfaw Wossen, TesfamichealAlene, A.Manyong, Victor M.[A manual for large-scale sample collection, preservation, tracking, DNA extraction, and variety identification analysis]A manual for large-scale sample collection, preservation, tracking, DNA extraction, and variety identification analysis

Résumé La plupart des politiques agricoles au Nigeria ont pour objectif d’intégrer les petits agriculteurs dans l'économie de marché. Au cours de la dernière décennie, le Nigéria a connu un important apport de capitaux privés et publics dans la promotion des unités de transformation du manioc de ...


Abass, A.Olarinde, L.Okoruwa, V.Amaza, P.Awoyale, W.Alabi, T.Ndavi, M.[Drivers of technical efficiency in cassava processing in Nigeria: implications for a commercializing food sector]Drivers of technical efficiency in cassava processing in Nigeria: implications for a commercializing food sector

Cassava (Manihot esculenta) is an important staple crop for over half a billion people in Africa yet current yield at farmers’ field is only 20% of the potential yield. The African Cassava Agronomy Initiative (ACAI) project is initiated to mitigate the yield gap through developing site-specific r...


Alabi, T.Pypers, P.Chernet, M.Hauser, S.Kreye, C.Haertel, M.[Using geospatial tools to optimize cassava agronomy trials in Nigeria and Tanzania]Using geospatial tools to optimize cassava agronomy trials in Nigeria and Tanzania

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