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In the farming systems approach to technology development, trials are carried out on a limited number of farmers’ fields. Results of these trials are extrapolated to the entire target area and used either to identify directions for further research or to develop recommendations for farmers. Extra...


Smith, J.Walker, P.Oyewole, B.[Representativeness of farmers and sites in onfarm trials]Representativeness of farmers and sites in onfarm trials
Guiller, KETittonell, Pablo A.Rufino, Mariana C.Wijk, Mark T. vanZingore, ShamieMapfumo, PaulAdjei-Nsiah, SamuelHerrero, Mario T.Chikowo, RegisCorbeels, MarcRowe, ECBaijukya, Frederick P.Mwijage, ASmith, J.Yeboah, E.Burg, W.J. van derSanogo, O.M.Misiko, Michael T.Ridder, N.A. deKaranja, S.Kaizzi, CKungu, J.Mwale, MNwaga, DPacini, C.Vanlauwe, Bernard[Communicating complexity: integrated assessment of trade-offs concerning soil fertility management within African farming systems to support innovation and development]Communicating complexity: integrated assessment of trade-offs concerning soil fertility management within African farming systems to support innovation and development

The regeneration of secondary forests (SF) on previously cleared land in the Amazon is a promising development within the generally pessimistic scenario about tropical deforestation. This has stimulated efforts to augment the value of SF to farmers to induce them to increase the area in SF. The o...


Smith, J.Kop, P. van deReategui, K.Lombardi, I.Sabogal, C.Díaz, A.[Dynamics of secondary forests in slash-and-burn farming: interactions among land use types in the Peruvian Amazon]Dynamics of secondary forests in slash-and-burn farming: interactions among land use types in the Peruvian Amazon
Smith, J.Weber, G.K.Manyong, Victor M.Fakorede, M.A.B.[Systems dynamics and heterogeneity: the key to unlocking West Africa`s potential? the case of maize in Nigeria]Systems dynamics and heterogeneity: the key to unlocking West Africa`s potential? the case of maize in Nigeria
Manyong, Victor M.Smith, J.Weber, G.Jagtap, S.S.Oyewole, B.[Macrocharacterization of agricultural systems in West Africa: an overview]Macrocharacterization of agricultural systems in West Africa: an overview
Smith, J.Weber, G.[Strategic research in heterogenous mandate areas: an example from the West African Savanna]Strategic research in heterogenous mandate areas: an example from the West African Savanna

The northern Guinea savanna in Africa (NGS) with a season length of 151–180 days and an altitude below 800 m has long been recognized as highly suitable for crop production and animal husbandry. At present, land use intensity and farming as well as livestock systems vary widely across the zone. S...


Weber, G.Smith, J.Manyong, V.[System dynamics and the defintion of research domains for the northern Guinea Savanna of West Africa]System dynamics and the defintion of research domains for the northern Guinea Savanna of West Africa

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