Effect of Rootstock on Vineyard Establishment Using Green-Growing Benchgrafts

Demand for vine plant material has increased drastically due to the ongoing expansion of viticulture, and recent widespread replanting efforts. Nurseries growers are turning green-grafted vines meet demand. Unfortunately, most vineyard establishment studies have centered around dormant benchgrafted vines. Thus, little is known regarding specific trends green-growing benchgrafts. This study aimed explore role rootstock selection in benchgraft development over first four years post-planting. Vitis vinifera L. cv. Sauvignon blanc was grafted onto multiple rootstocks varying parentage, including ‘101-14MGT’ (V. riparia × V. rupestris), ‘1103P’ berlandieri ‘110R’ ‘420A MGT’ riparia), ‘Teleki 5C’ riparia). The experimental site organized using a completely randomized design (n = 12) with all managed industry-standard cultural practices. Vines 1103P had largest average trunk diameter (p 0.0012) circumference < 0.0001) at 22.2 mm 7.57 cm, respectively. 110R second-largest 6.65 cm. concentration total non-structural carbohydrates planting 1.47 g/L, followed by 1.25 g/L 0.0001). Total carbohydrate concentrations during dormancy highest 16.0% dry weight 0.0008). larger size more extensive reserves suggest that benchgrafts or higher capacity likelihood success.