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http://dx.doi.org/10.5532/KJAFM.2020.22.3.194

Quantitative Assessment of the Quality of Regional Adaptation Trial Data for Crop Model Improvement  

Hyun, Shinwoo (Department of Plant Science, Seoul National University)
Seo, Bo Hun (Department of Plant Science, Seoul National University)
Lee, Sukin (Interdisciplinary Program in Agricultural and Forest Meteorology, Seoul National University)
Kim, Kwang Soo (Department of Plant Science, Seoul National University)
Publication Information
Korean Journal of Agricultural and Forest Meteorology / v.22, no.3, 2020 , pp. 194-204 More about this Journal
Abstract
Cultivar parameters, which are key inputs to a crop growth model, have been estimated using observation data in good quality. Observation data with high quality often require considerable labor and cost, which makes it challenging to gather a large quantity of data for calibration of cultivar parameters. Alternatively, data in sufficient quantity can be collected from the reports on the evaluation of cultivars by region although these data are of questionable quality. The objective of our study was to assess the quality of crop and management data available from the reports on the regional adaptation trials for rice cultivars. We also aimed to propose the measures for improvement of the data quality, which would aid reliable estimation of cultivar parameters. DatasetRanker, which is the tool designed for quantitative assessment of the data for parameter calibration, was used to evaluate the quality of the data available from the regional adaptation trials. It was found that these data for rice cultivars were classified into the Silver class, which could be used for validation or calibration of key cultivar parameters. However, those regional adaptation trial data would fall short of the quality for model improvement. Additional information on management, e.g., harvest and irrigation management, can increase the quantitative quality by 10% with the minimum effort and cost. The quality of the data can also be improved through measurements of initial conditions for crop growth simulations such as soil moisture and nutrients. In addition, crop model improvement can be facilitated using crop growth data in time series, which merits further studies on development of approaches for non-destructive methods to monitor the crop growth.
Keywords
Data quality; Monitoring; Parameter calibration; Crop model; RealSense;
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