국내기사
Performance evaluation of APSIM and DSSAT models for simulating buckwheat growth and yield (Fagopyrum esculentum Moench) = 메밀의 생육 및 수확량 모의를 위한 APSIM과 DSSAT 모델의 성능 평가
저자명
Okwang, Stephen, Park, Hyunsu, Son, Jeongwoo, Kim, Taegon, Kwak, Jin-Hyeob, Jang, Taeil
Accurate simulation of buckwheat (Fagopyrum esculentum Moench) growth and yield is essential for predicting crop responses, optimizing water use, and supporting sustainable production. Crop growth models provide a robust framework to quantify these responses to soil and management factors, enabling more precise decision-making under variable environmental conditions. This study evaluated the performance of the APSIM and DSSAT models in simulating the soil moisture dynamics and crop yield of buckwheat in South Korea. Field data on soil moisture, leaf area index (LAI), phenology, and yield were used for model calibration. Both models successfully reproduced overall growth patterns and phenological stages, with DSSAT showing better performance in simulating final yield (observed 126.5 kg 10a ¹; DSSAT 111.3; APSIM 152.0), maximum LAI and phenology. APSIM more accurately represented early growth and final above ground biomass. Soil moisture dynamics were well captured by both models (APSIM: R² = 0.95, RMSE = 2.50%, d = 0.97; DSSAT: R² = 0.97, RMSE = 1.64%, d = 0.98). However, APSIM tended to overestimate soil moisture under wet conditions and exaggerate depletion under dry conditions, whereas DSSAT slightly underestimated soil water depletion during dry periods, reflecting differences in model structure and parameterization. Overall, both models showed strong potential as decision-support tools for sustainable buckwheat production, though further validation is required to enhance their predictive reliability under diverse climatic conditions.