Higher farmer willingness to pay for quality cassava (Manihot esculenta Crantz) planting materials: evidence from experimental auctions in Cambodia and Lao PDR. Replication data including socioeconomic survey and experimental auction results

Data includes paired socioeconomic survey responses and results from experimental auctions for cassava planting material in Cambodia (4 provinces, N=321) and Lao PDR (5 provinces, N=391). This information was gathered to measure farmer demand / willingness to pay for different classes of cassava planting material with different traits. The goal of the activity was to understand farmer behavior and preferences surrounding seed purchase and exchange. Metodology:Surveys and auction responses were gathered between 10 November, 2020 and 5 April, 2021, from cassava growing households across the major cassava production areas of both countries. Post-survey auctions were conducted on groups of 20 participants with three experimental products: farmer seed, an elite cassava variety less susceptible to cassava mosaic disease, and the same elite variety tested and virus-free. Participants placed bids for the maximum they would pay for a single 20 stem bundle of planting material of each product in a single full round, silent bidding approach. The study was designed to elicit farmer willingness to pay for improved planting materials.

本数据集涵盖柬埔寨（4个省份，N=321）与老挝人民民主共和国（5个省份，N=391）地区木薯种植材料的配对社会经济问卷应答数据及实验拍卖结果。本次数据采集工作旨在测算不同性状类别的木薯种植材料的农户需求及支付意愿，同时探究农户在薯种购买与流通环节的行为与偏好。

研究方法：问卷与拍卖应答数据采集于2020年11月10日至2021年4月5日期间，覆盖两国木薯主产区的木薯种植农户。问卷调研结束后，针对每组20名参与者开展后续拍卖实验，实验共设置三类产品：农户自留薯种、对木薯花叶病抗性更强的优良木薯品种，以及经检测脱毒的同品种优良种薯。参与者采用无声竞价（silent bidding）方式，在单轮完整竞价流程中，针对每类产品的单份20茎秆装种植材料，填报其愿意支付的最高报价。本研究旨在测算农户对改良型种植材料的支付意愿。