Incorporating cultivar-specific stomatal traits into stomatal conductance models improves the estimation of evapotranspiration enhancing greenhouse climate management

نویسندگان

چکیده

The effect of considering cultivar differences in stomatal conductance (gs) on relative air humidity (RH)-related energy demand was addressed. We conducted six experiments order to study the variation evapotranspiration (ETc) pot rose cultivars, investigate underlying processes and parameterise a gs-based ETc model. Several levels crop were realised by adjusting growth environment. commonly applied Ball–Woodrow–Berry gs-sub-model (BWB-model) models validated under greenhouse conditions, showed close agreement between simulated measured ETc. model incorporated into simulator. A scenario simulation that selecting low-gs cultivars reduces (?5.75%), depending RH set point. However, BWB-model poor prediction quality at lower than 60% good fit higher RH. Therefore, an attempt made improve prediction: situ-obtained data employed adapt extend either BWB-model, or Liu-extension with substrate water potential (?; BWB-Liu-model). Both extended density (Ds) pore area. Although modified BWB-Liu-model (considering Ds) allowed accuracy (R2 = 0.59), as compared basic version 0.31), typical lack ? may be problematic for implementation real-time climate control. current lays basis development specific cultivation strategies well improving gs sub-model dynamic conditions low using model-based control systems.

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ژورنال

عنوان ژورنال: Biosystems Engineering

سال: 2021

ISSN: ['1537-5129', '1537-5110']

DOI: https://doi.org/10.1016/j.biosystemseng.2021.05.010