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Keulen, Prof.dr.ir. H. van (Herman) |
Profession
Scientist / researcher |
Geographic expertise
Africa; Africa South of Sahara; Burkina Faso; Ethiopia; Kenya; Mali; Reunion; Sahel; West Africa |
Thematic expertise
Land Use; Agricultural Economy; Nutrition Research |
MDG expertise
Poverty; Hunger; Environmental policy; Access to new technologies; Globalisation |
E-mail
herman.vankeulen@wur.nl |
Telephone
+31 317 475955 |
NARCIS (Dutch Research Database)
PRS1237936 |
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Organisation / affiliation |
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| 1. |
Plant Research International
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Wageningen
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26 publications found in harvested repositories
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| 1. | Heterogeneity in farmers' production decisions and its impact on soil nutrient use: Results and implications from northern Nigeria
2011 - Berkhout, E.D.; Schipper, R.A.; Keulen, H., van; Coulibaly, O.
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| 2. | Climate change and food security in the drylands of West Africa
2003 - Verhagen, A.; Dietz, A.J.; Ruben, R.; Dijk, H., van; Jong, A., de; Zaal, F.; Bruijn, M., de; Keulen, H., van
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| 3. | Climate change and food security in the drylands of West Africa
2003 - Verhagen, A.; Dietz, A.J.; Ruben, R.; Dijk, H., van; Jong, A., de; Zaal, F.; Bruijn, M., de; Keulen, H., van
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| 4. | Modelling the dynamics of agricultural development at farm and regional level
2003 - Struif Bontkes, T.; Keulen, H., van
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| 5. | Evaluating alternatives for sustainable farming systems in the cercle de Koutiala, Mali. A multi-scale approach
2007 - Lopez-Ridaura, S.; Hengsdijk, H.; Kanté, S.; Lubbers, M.T.M.H.; Keulen, H., van
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| 6. | Options for intensification of mixed crop-livestock systems in rural communities of south-western Niger: Prospects and constraints
2004 - La Rovere, R.; Hiernaux, P.; Keulen, H., van
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| 7. | Nutrient balances at farm level in Machakos (Kenya), using a participatory nutrient monitoring (NUTMON) approach
2005 - Gachimbi, L.N.; Keulen, H., van; Thuranira, E.G.; Karuku, A.M.; Jager, A., de; Nguluu, S.; Ikombo, B.M.; Kinama, J.M.; Itabari, J.K.; Nandwa, S.M.
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| 8. | Co-evolutionary scenarios of intensification and privatization of resource use in rural communities of south-western Niger
2005 - La Rovere, R.; Hiernaux, P.; Keulen, H., van; Schiere, J.B.; Szonyi, J. A.
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| 9. | Productivity differences in banana-based production systems in Uganda
2003 - Rufino, M.; Ruben, R.; Keulen, H., van
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| 10. | On approaches and applications of the Wageningen crop models
2003 - Ittersum, M.K., van; Leffelaar, P.A.; Keulen, H., van; Kropff, M.J.; Bastiaans, L.; Goudriaan, J.
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| 11. | Attaining Sustainable Farm Management Systems in Semi-Arid Areas in Kenya: Few Technical Options, Many Policy Challenges
2006 - Jager, A., de; Keulen, H., van; Mainah, F.; Gachimbi, L.N.; Itabari, J.K.; Thuranira, E.G.; Karuku, A.M.
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| 12. | Soil degradation in Sub-Saharan Africa
2005 - Hartemink, A.E.; Keulen, H., van
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| 13. | Attaining Sustainable Farm Management Systems in Semi-Arid Areas in Kenya: Few Technical Options, Many Policy Challenges
2005 - Jager, A., de; Keulen, H., van; Mainah, F.; Gachimbi, L.N.; Itabari, J.K.; Thuranira, E.G.; Karuku, A.M.
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| 14. | The effect of temporal variation on inputs and outputs of future-oriented land use systems in West Africa
2002 - Hengsdijk, H.; Keulen, H., van
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| 15. | Variations in yield response to fertilizer application in the tropics: II. risks and opportunities for smallholders cultivating maize on Kenya's arable land
1997 - Rötter, R.; Keulen, H., van
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| 16. | Potential wheat yields in Zambia - a simulation approach
1984 - Keulen, H., van; Milliano, W.A.J., de
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| 17. | Participatory land use analysis for semi-arid regions in Kenya: a nutrient monitoring approach
2005 - Gachimbi, L.N.; Keulen, H., van; Jager, A., de; Thuranira, E.G.; Karuku, A.M.; Itabari, J.K.; Nguluu, S.; Gichangi, E.M.
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| 18. | Cotton-Made in Africa: Quantifying the Sustainability of Cotton Production
2005 - Bos, M.G.; Bosch, R., van den; Diemont, H.; Keulen, H., van; Lahr, J.; Meijerink, G.; Verhagen, A.
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| 19. | Participatory land use analysis for semi-arid regions in Kenya: a nutrient monitoring approach
2005 - Gachimbi, L.N.; Keulen, H., van; Jager, A., de; Thuranira, E.G.; Karuku, A.M.; Itabari, J.K.; Nguluu, S.; Gichangi, E.M.
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| 20. | Analysis for dry and wet years with the WIMISA model of tree-crop competition for wind break systems in the Sahel
1999 - Mayus, M.; Keulen, H., van; Stroosnijder, L.
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| 21. | Options for intensification of mixed crop-livestock systems in rural communities of south-western Niger: Prospects and constraints
2005 - La Rovere, R.; Hiernaux, P.; Keulen, H., van
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| 22. | Participatory diagnosis of soil nutrient depletion in semi-arid areas of Kenya
2002 - Gachimbi, L.N.; Jager, A., de; Keulen, H., van; Thuranira, E.G.; Nandwa, S.M.
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| 23. | Development scenarios: Case study from the 5th region in Mali.
1996 - Keulen, H., van
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| 24. | Participatory diagnosis of soil nutrient depletion in semi-arid areas of Kenya
2002 - Jager, A., de; Gachimbi, L.N.; Keulen, H., van; Thuranira, E.G.; Nandwa, S.M.
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| 25. | Resource limitations in Sahelian agriculture
2001 - Breman, H.; Groot, J.J.R.; Keulen, H., van
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| 26. | Instruments politiques pour stimuler un développement agricole durable en Afrique sub-saharienne: Le cas du Cercle de Koutiala au sud-Mali
2000 - Sissoko, K.; Kuyvenhoven, A.; Ruben, R.; Kruseman, G.; Keulen, H., van
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