Different strategies of crop diversification between poor and non-poor farmers: Concepts and evidence from Tanzania
Different strategies of crop diversification between poor and non-poor farmers: Concepts and evidence from Tanzania
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DOI：
10.1016/j.ecolecon.2024.108369
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发表时间：
2025-01-01
影响因子：
7
通讯作者：
Suzuki，Aya
中科院分区：
文献类型：
--
作者：
Fujimoto，Takefumi;Suzuki，Aya
作物多样化，即在农田种植多种作物，作为小农的一种减少风险的战略受到了关注。本研究试图表明，贫困和非贫困农民采取不同的作物多样化战略。我们首先概念化农民的异质性动机作物多样化，通过引入一个生存约束下的效用最大化问题的不确定性。使用坦桑尼亚国家小组调查，我们然后检查是否过去的经验的冲击影响采用作物多样化不同的贫困和非贫困农民。我们依靠一个阈值模型来估计贫困和非贫困农民之间的异质性影响。我们发现，贫穷的农民采取作物多样化的强大的粮食安全，以应对干旱/洪水和粮食价格大幅上涨的购买。相比之下，非贫困农民采用作物多样化，以稳定市场收入，应对投入价格大幅上涨和销售作物价格大幅下跌的情况。
Crop diversification, or growing multiple crops in farmland, has received attention as a risk-reducing strategy for smallholders. This study attempts to show that poor and non-poor farmers adopt different strategies of crop diversification. We first conceptualize farmers’ heterogeneous motivations for crop diversification by introducing a subsistence constraint into a utility maximization problem under uncertainty. Using the Tanzanian National Panel Survey, we then examine whether past experiences of shocks affect the adoption of crop diversification differently between poor and non-poor farmers. We rely on a threshold model to estimate heterogeneous impacts between poor and non-poor farmers. We find that poor farmers adopt crop diversification for robust food securities in response to drought/flood and large increases in food prices for purchase. In contrast, non-poor farmers adopt crop diversification to stabilize market income in response to large increases in input prices and large declines in crop prices for sale.