Post-budbreak pruning changes intra-spur phenology dynamics, vine productivity and berry ripening parameters in Vitis vinifera L. cv. ‘Pinot Noir’

Post‐budburst hand finishing of winter spur pruning can delay technological ripening without altering phenolic maturity of Merlot berries

“…Coincident with lower TSS, berries of late‐pruned vines had lower pH and higher TA, indicating that pruning after budburst delayed all the parameters of technological ripening, as reported by Frioni et al ().…”

“…In the last few years, many studies have showed the effects of post‐budburst spur pruning on red wine cultivars and it was reported that the phenological stage at which vines were pruned had a substantial effect on yield and final TSS concentration (Frioni et al , , Gatti et al , , Moran et al , , Palliotti et al , Petrie et al , Silvestroni et al ). It was also demonstrated that this technique, if applied appropriately, was able to delay sugar accumulation and increased the concentration of phenolic substances of berries while not affecting anthocyanin (Palliotti et al , Silvestroni et al ).…”

Delaying Budbreak to Reduce Freeze Damage: Seasonal Vine Performance and Wine Composition in Two Vitis vinifera Cultivars

“…Our results support previous studies on Amigo where the extent of delayed budbreak was similar to what we observed (i.e., 11 days or less), and there were no effects on juice or wine chemistry in either V. vinifera (Centinari et al 2018) or hybrid cultivars (Dami and Beam 2004). Previous research on the effects of late pruning on juice chemistry reported lower TSS accumulation and higher TA in berries during ripening (Frioni et al 2016, Frioni et al 2019; however, these differences were observed when pruning was performed at a later phenological stage (Frioni et al 2016), or when a more extensive delay in budbreak was reported (Frioni et al 2019) than in our study. Similarly, differences in wine chemistry between late pruning and control treatments were reported when delays in budbreak were more extensive (i.e., over two weeks) than we measured under our study conditions (Moran et al 2018).…”

“…In comparison to applications of vegetable oil-based adjuvants, the extent of delay induced by late pruning is mostly attributed to the phenological stage of the apical buds at the time of removal (Frioni et al 2016. Late pruning applied at a similar phenological stage of our study (between two-to-three leaves unfolded) delayed budbreak from 17 days (Gatti et al 2016) in Sangiovese vines, to four weeks or more (Frioni et al 2019 in Pinot Noir and Shiraz vines, respectively, compared to standard pruning. Delays in budbreak of late-pruned vines were less pronounced in our study, but still consistent between years and cultivars.…”

“…Delaying budbreak can also delay berry maturation (Frioni et al 2016, Frioni et al 2019, resulting in reduced fruit soluble sugar concentration at harvest and altered wine chemical composition (Moran et al 2018). Delaying the onset of berry ripening is desirable in warm climates, where late pruning has been used to offset rapid sugar accumulation in fruit (Frioni et al 2016, Palliotti et al 2017; however, effects of delaying budbreak on fruit and wine composition may be detrimental in cool climates, where the growing season is relatively short.…”