Fertilizer and conflicts: Evidence from Myanmar

IF 6.8 1区 经济学 Q1 AGRICULTURAL ECONOMICS & POLICY
Hiroyuki Takeshima , Bart Minten , Joanna van Asselt , Isabel Brigitte Lambrecht , Ian Masias , Joseph Goeb , Zin Wai Aung , May Thet Htar
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Abstract

The number of farmers residing in fragile and conflict-affected countries is rising globally, yet the impacts of conflict on the economics of inorganic fertilizer in these settings remain poorly understood. We study how conflicts in Myanmar, combined with global fertilizer market disruptions, have affected inorganic fertilizer prices, use, response, and efficiency. We utilize unique nationally representative household panel survey data and a comprehensive approach that employs various analytical methods to examine the nexus between conflicts and fertilizer-related issues. Our findings reveal that greater intensity of violent events is associated with higher prices of major types of inorganic fertilizer, particularly in areas farther from major import locations. These price changes and increases in violent events have suppressed both the likelihood and quantity of inorganic fertilizer usage, leading to decreased rice yield responses at given nitrogen application levels. Panel stochastic frontier analyses, combined with a method addressing the endogeneity of inorganic fertilizer use, suggest a significant decline in fertilizer use efficiency each year since the onset of conflict. The increase in violent events is also associated with the reduced use of extension services, seeds from markets, irrigation, and optimal fertilizer blends, which may partly explain the diminished returns and efficiency of inorganic fertilizer use. Conflict therefore seems to be associated with a change in the economics of inorganic fertilizer use through various impact channels, affecting agricultural performance in these fragile and conflict-affected settings.
化肥与冲突:来自缅甸的证据
在全球范围内,生活在脆弱和受冲突影响国家的农民人数正在上升,但冲突对这些地区无机肥料经济的影响仍然知之甚少。我们研究了缅甸的冲突以及全球化肥市场的混乱如何影响无机肥料的价格、使用、反应和效率。我们利用独特的具有全国代表性的家庭小组调查数据和综合方法,采用各种分析方法来检查冲突与肥料相关问题之间的联系。我们的研究结果表明,暴力事件的强度越大,主要类型无机肥料的价格越高,特别是在远离主要进口地点的地区。这些价格变化和暴力事件的增加抑制了无机肥料使用的可能性和数量,导致在一定施氮水平下水稻产量响应下降。面板随机前沿分析与解决无机肥料使用内生性的方法相结合,表明自冲突开始以来,肥料使用效率每年都在显著下降。暴力事件的增加还与推广服务、市场种子、灌溉和最佳肥料混合物的使用减少有关,这可能在一定程度上解释了无机肥料使用的回报和效率下降。因此,冲突似乎与无机肥料使用经济性的变化有关,通过各种影响渠道,影响这些脆弱和受冲突影响地区的农业绩效。
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来源期刊
Food Policy
Food Policy 管理科学-农业经济与政策
CiteScore
11.40
自引率
4.60%
发文量
128
审稿时长
62 days
期刊介绍: Food Policy is a multidisciplinary journal publishing original research and novel evidence on issues in the formulation, implementation, and evaluation of policies for the food sector in developing, transition, and advanced economies. Our main focus is on the economic and social aspect of food policy, and we prioritize empirical studies informing international food policy debates. Provided that articles make a clear and explicit contribution to food policy debates of international interest, we consider papers from any of the social sciences. Papers from other disciplines (e.g., law) will be considered only if they provide a key policy contribution, and are written in a style which is accessible to a social science readership.
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