Increased farmer willingness to pay for quality cassava (Manihot esculenta Crantz) planting materials: evidence from experimental auctions in Cambodia and Lao PDR

IF 5.6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

Food Security Pub Date : 2024-05-08 DOI:10.1007/s12571-024-01453-0

Erik Delaquis, Vanya Slavchevska, Conny J. M. Almekinders, Jonathan C. Newby, Chea Sareth, Chanphasouk Tanthapone, Paul C. Struik

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Abstract

Varietal turnover is a major mechanism for farmer adaptation to rapidly changing environmental and market conditions. Understanding factors related to varietal turnover is critical for safeguarding food security in the face of increasingly rapid changes to production contexts. Preference elicitation methods like experimental auctions reveal farmers’ willingness to pay (WTP) for seeds with different characteristics. We engaged farmers growing cassava (Manihot esculenta Crantz) across a wide geographic scope in Cambodia (n = 321, 4 provinces) and Lao PDR (n = 391, 5 provinces) in modified second-price experimental auctions to determine WTP for three cassava seed classes: farmer-produced planting stems of an undescribed variety, farmer-produced planting stems of an elite variety with lower susceptibility to Cassava Mosaic Disease (CMD), and virus-free tested planting stems of the same elite variety. In Lao PDR, mean auction bids for a bundle of 20 planting stems were 0.54, 0.92, and 1.40 USD for farmer, elite, and elite tested stems, while in Cambodia the analogous mean bids were 0.58, 0.77, and 1.16 USD, respectively. A significantly higher WTP associated with elite variety and tested stems in both countries was influenced by both geographic location (province) and individual socioeconomic farmer characteristics. In Lao PDR this included lower WTP of women, higher WTP of ethnic minorities, and, for improved stems, lower WTP of farmers with increased cassava growing experience. In Cambodia fewer socioeconomic variables affected WTP. Our results indicate significant increases in WTP for clean planting materials and new varieties, supporting market-based clean seed approaches as a component of regional control strategies for the CMD epidemic currently threatening a global agri-food value chain.

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提高农民为优质木薯（Manihot esculenta Crantz）种植材料付费的意愿：柬埔寨和老挝人民民主共和国试验性拍卖的证据

品种更替是农民适应快速变化的环境和市场条件的主要机制。面对生产环境日新月异的变化，了解与品种更替相关的因素对于保障粮食安全至关重要。实验性拍卖等偏好激发方法揭示了农民对不同特性种子的支付意愿（WTP）。我们在柬埔寨（n = 321，4 个省）和老挝人民民主共和国（n = 391，5 个省）广泛的地理范围内让种植木薯（Manihot esculenta Crantz）的农民参与修改后的二次价格实验拍卖，以确定三种木薯种子类别的 WTP：农民生产的未描述品种的种植茎、农民生产的对木薯花叶病（CMD）敏感性较低的优良品种的种植茎，以及同一优良品种的无病毒测试种植茎。在老挝人民民主共和国，农民、优良品种和经测试的优良品种的一捆 20 根种植茎的平均拍卖出价分别为 0.54、0.92 和 1.40 美元，而在柬埔寨，类似的平均出价分别为 0.58、0.77 和 1.16 美元。在这两个国家，与优良品种和经过测试的茎秆相关的 WTP 都明显较高，这既受地理位置（省）的影响，也受农民个人社会经济特征的影响。在老挝人民民主共和国，妇女的 WTP 较低，少数民族的 WTP 较高，对于改良茎，木薯种植经验丰富的农民的 WTP 较低。在柬埔寨，影响 WTP 的社会经济变量较少。我们的研究结果表明，清洁种植材料和新品种的 WTP 显著增加，支持以市场为基础的清洁种子方法，将其作为目前威胁全球农业食品价值链的 CMD 流行病区域控制战略的组成部分。

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来源期刊

Food Security FOOD SCIENCE & TECHNOLOGY-

CiteScore

14.00

自引率

6.00%

发文量

审稿时长

>12 weeks

期刊介绍： Food Security is a wide audience, interdisciplinary, international journal dedicated to the procurement, access (economic and physical), and quality of food, in all its dimensions. Scales range from the individual to communities, and to the world food system. We strive to publish high-quality scientific articles, where quality includes, but is not limited to, the quality and clarity of text, and the validity of methods and approaches. Food Security is the initiative of a distinguished international group of scientists from different disciplines who hold a deep concern for the challenge of global food security, together with a vision of the power of shared knowledge as a means of meeting that challenge. To address the challenge of global food security, the journal seeks to address the constraints - physical, biological and socio-economic - which not only limit food production but also the ability of people to access a healthy diet. From this perspective, the journal covers the following areas: Global food needs: the mismatch between population and the ability to provide adequate nutrition Global food potential and global food production Natural constraints to satisfying global food needs: § Climate, climate variability, and climate change § Desertification and flooding § Natural disasters § Soils, soil quality and threats to soils, edaphic and other abiotic constraints to production § Biotic constraints to production, pathogens, pests, and weeds in their effects on sustainable production The sociological contexts of food production, access, quality, and consumption. Nutrition, food quality and food safety. Socio-political factors that impinge on the ability to satisfy global food needs: § Land, agricultural and food policy § International relations and trade § Access to food § Financial policy § Wars and ethnic unrest Research policies and priorities to ensure food security in its various dimensions.