Non-destructive estimation of leaf area is a more efficient and convenient method than leaf excision. Thus, several models predicting leaf area have been developed for various horticultural crops. However, there are limited studies on estimating the leaf area of strawberry plants. In this study, we predicted the leaf areas via nonlinear regression analysis using the leaf lengths and widths of three-compound leaves in five domestic strawberry cultivars (‘Arihyang’, ‘Jukhyang’, ‘Keumsil’, ‘Maehyang’, and ‘Seollhyang’). The coefficient of determination (R2) between the actual and estimated leaf areas varied from 0.923 to 0.973. The R2 value varied for each cultivar; thus, leaf area estimation models must be developed for each cultivar. The leaf areas of the three cultivars ‘Jukhyang’, ‘Seolhyang’, and ‘Maehyang’ could be non-destructively predicted using the model developed in this study, as they had R2 values over 0.96. The cultivars ‘Arihyang’ and ‘Geumsil’ had slightly low R2 values, 0.938 and 0.923, respectively. The leaf area estimation model for each cultivar was coded in Python and is provided in this manuscript. The estimation models developed in this study could be used extensively in other strawberry-related studies.

Abstract
Introduction
Materials and Methods
Results and Discussion
Acknowledgments
Literature Cited

• Jung Su Jo(Research Professor, Institute of Agricultural Science and Technology, Kyungpook National University, Daegu 41566, Korea)
• Ha Seon Sim(Graduate Student, Department of Horticultural Science, College of Agricultural & Life Science, Kyungpook National University, Daegu 41566, Korea)
• Soo Bin Jung(Graduate Student, Department of Horticultural Science, College of Agricultural & Life Science, Kyungpook National University, Daegu 41566, Korea)
• Yu Hyun Moon(Graduate Student, Department of Horticultural Science, College of Agricultural & Life Science, Kyungpook National University, Daegu 41566, Korea)
• Won Jun Jo(Graduate Student, Department of Horticultural Science, College of Agricultural & Life Science, Kyungpook National University, Daegu 41566, Korea)
• Ui Jeong Woo(Graduate Student, Department of Horticultural Science, College of Agricultural & Life Science, Kyungpook National University, Daegu 41566, Korea)
• Sung Kyeom Kim(Professor, Department of Horticultural Science, College of Agricultural & Life Science, Kyungpook National University,Professor, Institute of Agricultural Science and Technology, Kyungpook National University, Daegu 41566, Korea) Corresponding author