Ruben, Ruerd; Kruseman, Gideon; Kuyvenhoven, Arie - In: Agricultural Economics 34 (2006) 2, pp. 167-181
Strategies for poverty alleviation and sustainable natural resource management usually focus on land use options for improving yields. Increasing the returns to critical factors requires possibilities for input substitution. Inadequate timing of input applications or nonavailability of...