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Boundary Line Analysis of Rice Yield Responses to Meteorological Conditions for Yield Prediction II. Verification of Yield Prediction Model  

김창국 (농촌진흥청)
한원식 (농촌진흥청)
이변우 (서울대학교 농업생명과학대학)
Publication Information
Korean Journal of Agricultural and Forest Meteorology / v.4, no.3, 2002 , pp. 164-168 More about this Journal
Abstract
Yield prediction model of rice based on the boundary line analysis of the relationships between rice yield and meteorological conditions during rice growing period was reported in the previous report (Kim et al, 2001). Using the 15-year data of the 20 locations used for the model formulation and of the 12 locations not used, the model was tested for its predictability of location to location, year to year, and variety to variety variation of rice yield. The model predicted reliably the mean yield differences among locations, the yearly yield variation in each location, and the yield variation by variety. However, the model showed relatively lower predictability for the years of cool weather injury especially in mountainous locations. In conclusion, the model using boundary line analysis could be used to predict the yield responses to meteorological conditions during rice growth period and the locational, yearly, and varietal variations of rice yield. And the predictability of the present yield prediction model might be improved by including the boundary line analysis for the other factors such as soil characteristics, fertilization levels, etc.
Keywords
boundary line; yield; rice; model; meteorological index;
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