Experimental data on the time of bud break and leaf abscission of selected species are modeled by a modified logistic function. Positive effects are shown for temperature but not [CO2] for the bud break time in spring. Both higher temperature and higher [CO2] prolong the life of leaves in autumn. Problems caused by late and early frost events are discussed.
KeywordsBud break Leaf discoloration Leaf abscission Leaf longevity
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