Double cropping in<i>Vitis vinifera</i>L. cv. Pinot Noir: agronomical and physiological validation

Background and Aims Environmental effects of global warming are leading to extended ripening seasons, which may either require or allow new vineyard management techniques. An innovative double-cropping technique is proposed for temperate climate areas. Methods Results The principle was maintain the primary crop as well obtain a second, late through release dormancy auxiliary buds during current season. Potted Pinot Noir vines were subjected two forcing treatments over 2 years: trimming all shoots at six nodes removing any developing laterals end flowering pea size stages. Vine growth, yield components grape composition monitored on both forced shoots. In second season, seasonal whole-vine gas exchange evaluated in detail. Forced carried 40–50% vine compared fruit quality greatly enhanced higher TA observed. Forcing reached similar net carbon dioxide rate per unforced Control about weeks following budburst. For remainder maintained much water-use efficiency than vines. Conclusions Detailed agronomical physiological evaluation years confirmed reliability without compromising pruning point selection next cropping year. Significance Study Future field application disclose that this able warrant crops potentially suited different wine styles within single