Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Can sub-Saharan Africa feed itself?
Ittersum, M.K. van; Bussel, L.G.J. van; Wolf, J. ; Grassini, Patricio ; Wart, Justin van; Guilpart, Nicolas ; Claessens, L.F.G. ; Groot, H.L.E. de; Wiebe, Keith ; Mason-d’Croz, Daniel ; Yang, Haishun ; Boogaard, H.L. ; Oort, P.A.J. van; Loon, M.P. van; Saito, Kazuki ; Adimo, Ochieng ; Adjei-Nsiah, Samuel ; Agali, Alhassane ; Bala, Abdullahi ; Chikowo, Regis ; Kaizzi, Kayuki ; Kouressy, Mamoutou ; Makoi, Joachim H.J.R. ; Ouattara, Korodjouma ; Tesfaye, Kindie ; Cassman, Kenneth G. ; Hall, Lindsey ; Kalka, Gogi - \ 2017
Environmental Science Journal for Teens (2017). - 4 p.
By the year 2050, the world’s population will need 60% more food than it did in 2005. In sub-Saharan Africa (we’ll call it SSA) (Fig. 1) this problem will be even greater, with the demand for cereals increasing by more than three times as the population rises.
We collected and calculated farming data for 10 countries in sub-Saharan Africa. This made us realize that countries in SSA must make many large changes to ncrease their yield of cereals (the amount of cereals that are grown on the current farmland each year) to meet this greater demand.
If countries in SSA are unable to increase cereal yield, there are two options. either farmland areas will have to increase drastically, at the expense of natural land, or SSA will need to buy more cereal from other countries than it does today. This may put more people in these countries at risk of not having enough food to be able to live healthily.
Can sub-Saharan Africa feed itself?
Ittersum, Martin K. Van; Bussel, Lenny G.J. Van; Wolf, Joost ; Grassini, Patricio ; Wart, Justin Van; Guilpart, Nicolas ; Claessens, Lieven ; Groot, Hugo de; Wiebe, Keith ; Mason-d’Croz, Daniel ; Yang, Haishun ; Boogaard, Hendrik ; Oort, Pepijn A.J. van; Loon, Marloes P. van; Saito, Kazuki ; Adimo, Ochieng ; Adjei-Nsiah, Samuel ; Agali, Alhassane ; Bala, Abdullahi ; Chikowo, Regis ; Kaizzi, Kayuki ; Kouressy, Mamoutou ; Makoi, Joachim H.J.R. ; Ouattara, Korodjouma ; Tesfaye, Kindie ; Cassman, Kenneth G. - \ 2016
Proceedings of the National Academy of Sciences of the United States of America 113 (2016)52. - ISSN 0027-8424 - p. 14964 - 14969.
Although global food demand is expected to increase 60% by 2050 compared with 2005/2007, the rise will be much greater in sub-Saharan Africa (SSA). Indeed, SSA is the region at greatest food security risk because by 2050 its population will increase 2.5-fold and demand for cereals approximately triple, whereas current levels of cereal consumption already depend on substantial imports. At issue is whether SSA can meet this vast increase in cereal demand without greater reliance on cereal imports or major expansion of agricultural area and associated biodiversity loss and greenhouse gas emissions. Recent studies indicate that the global increase in food demand by 2050 can be met through closing the gap between current farm yield and yield potential on existing cropland. Here, however, we estimate it will not be feasible to meet future SSA cereal demand on existing production area by yield gap closure alone. Our agronomically robust yield gap analysis for 10 countries in SSA using location-specific data and a spatial upscaling approach reveals that, in addition to yield gap closure, other more complex and uncertain components of intensification are also needed, i.e., increasing cropping intensity (the number of crops grown per 12 mo on the same field) and sustainable expansion of irrigated production area. If intensification is not successful and massive cropland land expansion is to be avoided, SSA will depend much more on imports of cereals than it does today.
Shelterbelts and farmers needs
Onyewotu, L.O.Z. ; Stigter, C.J. ; Abdullahi, Y. ; Ariyo, J. - \ 2003
LEISA : ILEIA newsletter for low-external-input and sustainable agriculture 19 (2003)4. - ISSN 1569-8424 - p. 28 - 29.
landbouwhervorming - landbouwsituatie - windsingels - bescherming - landbouwgronden - communicatie - non-participatie - boeren - nigeria - agrarian reform - agricultural situation - shelterbelts - protection - agricultural soils - communication - non-participation - farmers
As a response to desertification and long periods of drought in Northern Nigeria in the 1970s, the Kano State Forestry Department designed a programme of land rehabilitation using shelterbelts. It soon became clear, however, that the shelterbelts had design errors and had many disadvantages. Farmers had not been consulted when they had been established and this added to their sense of dissatisfaction with the measures implemented. In this article the authors use the Nigerian experience to stress the importance of actively involving farmers as well as researchers and policy makers in soil management and rehabilitation programmes.
Reclamation of desertified farmlands and consequences for its farmers in semiarid Northern Nigeria: a case study of Yambawa Rehabilitation Scheme
Onyewotu, L.O.Z. ; Stigter, C.J. ; Abdullahi, A.M. ; Ariyo, J.A. ; Oladipo, E.O. ; Owonubi, J.J. - \ 2003
Arid Land Research and Management 17 (2003). - ISSN 1532-4982 - p. 85 - 101.
shelterbelt - millet - sand
As a trial relief measure to rehabilitate abandoned desertified fields at Yambawa in semiarid northern Nigeria, the forest department, acting on advice from the Forestry Research Institute of Nigeria (FRIN), established a system of multiple shelterbelts using a monoculture of Eucalyptus camaldulensis. Farmers returning did so not because of the shelterbelts but for socioeconomic reasons related to unemployment and food security. Local farmers were not consulted at the planning stage, and this led to their resentment of the rehabilitation scheme. They would have preferred their choice of tree species that have medicinal or food value. This omission by the government was worsened by inadequate design rules and failure to pay adequate compensation for the 15-20% of land utilized. The use of much land led to more fragmentation in the family tenure, which negatively influences farm use and planning. Income wise, farmers in unsheltered areas appear, therefore, better off. Although 50% of all farmers consulted extension workers, services of the forestry and agricultural extension units were inadequate and uncoordinated, resulting in farmers in the protected area not fully understanding what measures they should take to improve on their crop yields. Farmers who had expected that the belts would enhance their financial and social status became also disappointed when they saw that revenue generated from fuel wood and poles harvested went to the government. Grain yields of millet in farmers' plots were 46 +/- 3% lower in unprotected areas than in the areas between the belts, during the very different 1993 and 1994 rainy seasons for two differently determined planting dates. Better extension would have brought more of such benefits to the farmer and better design rules would have even increased these advantages.
The Farming Systems in the Coffee Area, Kyeni South Location, Embu District, Kenya
Abdullahi, Y.A. ; Hekstra, P. ; Ibrahim, M.A. ; Ickowicz, A.E. ; Pleumpanya, S. ; Wickstead, M.R. - \ 1986
Wageningen : ICRA (ICRA bulletin 22) - 89 p.
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