Measurement and Modeling of Carbon Balance of the Apple Tree

Abstract

Apple (Malus domestica Borkh.) trees can produce very large crops under optimal conditions. In New Zealand, record yields approaching 120 to 140 tha -1 fresh weight (18-20 tha -1 dry weight) have been sustained over several years (D.S. Tustin, personal communication). The high yields in New Zealand have been attributed to relatively cool but sunny growing conditions and a long postharvest season Thus, for a C 3 crop, apple has high potential productivity.