Akademik Veri Yönetim Sistemi
SUGAR TECH, cilt.27, sa.2, ss.1-12, 2025 (SCI-Expanded)
Crop water production functions, which describe the relationship between yield and water use, are of great importance in
determining the economic value of irrigation, identifying different irrigation strategies and determining optimum irrigation
levels. The main objective of this study was to evaluate the performance of Stewart, Jensen, Minhas, Blank and Rao functions
in predicting root yield in sugar beet. Field studies were carried out in 2019 and 2020 in Bursa Yenişehir Vocational
School Production Area. Water stress sensitivity indices of crop water production functions were determined using ET and
yield values in the first year. Root yield values simulated with crop water production functions were compared with root
yield values measured in the field in 2020. Sensitivity indices of sugar beet to water at four different growth stages were
determined using five different crop water production models. Considering the sensitivity indices of sugar beet to water in
four different growth periods, it was determined that the yield formation period (Y) was the most sensitive to water. Yield
formation (Y) period was followed by vegetative (V) and establishment (E) periods. The least water-sensitive period of sugar
beet was the ripening (R) period. Jensen and Minhas models were recommended when the sensitivity indices to water stress
calculated for four different growth stages of sugar beet were compared.