Performance of a Chill Overlap Model for Predicting Budbreak in Chardonnay Grapevines over a Broad Range of Growing Conditions

fruclimadapt: An R package for climate adaptation assessment of temperate fruit species

“…The function predicts phenology using a user-defined starting date and forcing heat data (GDD or GDH), and a dataframe for starting dates and heat requirements. Although the thermal models are highly unrealistic in a biological sense, and not recommended for most species, so far is still the best approach to estimate phenology in grapevine, as more realistic models have not demonstrated superior efficacy (Parker et al, 2011;Prats-llinàs et al, 2018), in contrast to other species like apple (Darbyshire et al, 2017), cherry (Darbyshire et al, 2020) or almond (Diez-Palet et al, 2019).…”