Laguna Loop Survey (1987 - 1988)

The Laguna Loop survey is a farm household level data set collected by the IRRI - Agricultural Economics Department prior to the introduction of the high yielding varieties of rice. This initial survey refers to 1965 dry season - data that provided excellent benchmark information from rice farming respondents. The study was based upon a survey in which information was obtained regarding farm practices and costs and returns and other associated data related to rice production. The subsequent surveys have been taken every two to four years to note the pattern of adoption of the high yielding varieties, paddy yield, prices, various farming inputs, labor use, land tenure arrangement and the changes that have occurred in farming practices and costs and returns that have occurred overtime. These data are extremely useful historical records of the changes that have occurred during the four decades, the dynamic period of Philippine rice production. The sample farms are selected from the six municipalities in Laguna province - namely: Calauan, Bay, Calamba, Cabuyao, Sta. Rosa and Binan. In the later years - some of the farmers discontinue farming because their rice farms were converted into industrial and residential purpose. Hence, there was a reduction in the number of respondents per year or per season in the later years. Generally, the focal objective of this study is to track the changes in the farmer's rice technology, cultural practices, land tenure, mechanization, and labor practices that occurred during the survey period from 1965 to 2008. A number of publications, research papers, reports, and vast collections of Masters and Dissertations theses have already been published that utilized this very exhaustive panel data sets.

拉古纳循环调查（Laguna Loop Survey）是国际水稻研究所（International Rice Research Institute, IRRI）农业经济系在高产水稻品种（High Yielding Varieties, HYV）推广前收集的农户层面数据集。本次初始调查对应1965年旱季数据，为水稻种植受访农户提供了优质基准信息。本研究基于该项调查，收集了耕作模式、成本收益及其他与水稻生产相关的关联数据。后续调查每2至4年开展一次，用于记录高产水稻品种的采用模式、稻谷产量、价格、各类农业生产投入、劳动力使用情况、土地权属安排，以及水稻耕作模式与成本收益随时间推移发生的变化。这些数据堪称菲律宾水稻生产这四十余年动态变革期的珍贵历史记录。调查样本农场选自拉古纳省（Laguna）的6个市镇，分别为卡劳安（Calauan）、贝（Bay）、卡兰巴（Calamba）、卡布尧（Cabuyao）、圣罗莎（Sta. Rosa）与比南（Binan）。后续年份中，部分农户因水稻田被转为工业与住宅用地而放弃种植，因此每年度或每季的受访农户数量有所减少。本研究的核心目标为追踪1965年至2008年调查周期内，农户水稻种植技术、栽培农艺、土地权属、机械化水平与劳动力使用方式的变迁。目前已有大量学术著作、研究论文、研究报告以及海量硕士与博士学位论文，基于这套全面的面板数据集完成创作。