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| Kimhi, Ayal; Chiwele, Dennis K.. |
| The objective of this paper is to identify factors which limit the ability of Zambian farmers to increase Maize productivity and/or diversify their crop mix. Both may enable wealth accumulation, investments, and further expansion. Specifically, we link variations in agricultural decisions, practices, and outcomes, to variations in the tightness of the different constraints. We model crop production decisions as having recursive structure. Initially, farmers decide on land allocation among the different crops, based on their information set at planting time. Then, as new information (weather, market conditions) is revealed, farmers can change output by influencing the yield. This recursive structure enables to separate the effects of the constraints on the... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Crop Diversification; Maize Productivity; Recursive Decisions; Two-stage Estimation; Censored Dependent Variables; Community/Rural/Urban Development; International Development; Resource /Energy Economics and Policy; O1; Q1. |
| Ano: 2000 |
URL: http://purl.umn.edu/21877 |
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| Kimhi, Ayal. |
| Agricultural productivity is known to decline with farm size in many developing countries. This may be a result of market imperfections, such as missing rural labor markets. On the other hand, there may be economies of scale in farming, due, for instance, to the importance of lumpy inputs. Hence, it is not theoretically obvious that the inverse relationship prevails in all situations. Indeed, several studies found non-monotonic relationships between productivity and farm size, with productivity decreasing with size up to a certain size and increasing beyond that point. This paper examines the relationship between Maize productivity and plot size in Zambia. If offers a unique empirical approach. First, it focuses on Maize, which is the major crop on... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Maize Yield; Plot Size; Inverse Relationship; Recursive Decisions; Two-stage Estimation; Two-sided Tobit; Selectivity Correction; Crop Production/Industries; O1 (Economic Development); Q1 (Agriculture).. |
| Ano: 2003 |
URL: http://purl.umn.edu/14980 |
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