Accurate measurement of field size is essential for analysis of smallholder survey data

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dc.creatorFlor, Rica Joy
dc.creatorYuan, Shen
dc.creatorRizzo, Gonzalo
dc.creatorAgus, Fahmuddin
dc.creatorPame, Anny Ruth P.
dc.creatorOuk, Akhara
dc.creatorThen, Rathmuny
dc.creatorKeo, Sokheng
dc.creatorKumar, Virender
dc.creatorGrassini, Patricio
dc.date2024-05
dc.date2024-11-01T14:46:21Z
dc.date2024-11-01T14:46:21Z
dc.date.accessioned2026-06-27T04:15:24Z
dc.descriptionContext Agronomic surveys play a vital role in identifying on-farm yield constraints and opportunities to increase productivity, input-use efficiency, and farmer profit. These surveys typically rely on farmer-reported data, where crop yield and applied inputs per hectare are estimated based on farmer-reported total harvested output and applied inputs per field and associated field size. At question is how accurate field size is, which is vital in the case of smallholders as small inaccuracies can lead to large biases in estimated yield and inputs. Objectives The goals of this study are to assess current approaches to determine field size in smallholders, analyze biases between measurements and farmer estimates, and their influence on the analysis of the survey data. Cost-effective approaches for accurate field size measurement are also discussed. Methods We reviewed published studies that used survey data collected from smallholders to determine the extent to which field size is independently validated by researchers. Subsequently, we used data from thousands of smallholder fields in Southeast Asia to compare farmer-reported versus measured field size and examined the associated impact on estimated yields, inputs, and their relationships. Results We found that most published studies using survey data did not validate field size reported by farmers. Furthermore, our analysis of the field size data from smallholders in Southeast Asia showed substantial differences between farmer-reported and measured field size, resulting in significant biases in estimated yield and applied inputs, and leading to spurious relationships between them. Conclusion Uncertainty in field size can mislead analysis of smallholder survey data. Implications Future studies relying on survey data from smallholders should incorporate measurements of field size for accurate determination of crop yield and inputs.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/158405
dc.identifier.urihttp://hdl.handle.net/123456789/26758
dc.languageen
dc.publisherElsevier
dc.rightsOpen Access
dc.sourceFlor, Rica Joy, Shen Yuan, Gonzalo Rizzo, Fahmuddin Agus, Anny Ruth P. Pame, Akhara Ouk, Rathmuny Then, Sokheng Keo, Virender Kumar, and Patricio Grassini. "Accurate measurement of field size is essential for analysis of smallholder survey data." Field Crops Research 311 (2024): 109383. https://doi.org/10.1016/j.fcr.2024.109383
dc.subjectfield size
dc.subjectsmallholders
dc.subjectyields
dc.subjectinputs
dc.subjectsurveys
dc.subjectimpact assessment
dc.titleAccurate measurement of field size is essential for analysis of smallholder survey data
dc.typeJournal Article

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Instituto Internacional de Investigación del Arroz (IRRI)