Agronomic responses of grapevine ‘Chenin Blanc’ as a function of training systems and rootstocks

Abstract

The aim of this research was to study the influence of training system and rootstock on the yield, vigor and physiology of the 'Chenin Blanc' grapevine at São Francisco Valley, northeastern Brazil. An experiment was carried out on eight harvests, from 2013 to 2017, in Petrolina, in the state of Pernambuco. Grapevines were grown under two training systems, lyre and espalier, and five rootstocks: 'IAC 572', 'IAC 313', 'IAC 766', 'Paulsen 1103' and 'SO4', using a split-plot randomized block design, with training systems assigned to the main plot and the rootstock assigned to the subplot. Lyre favored an increase in the number of bunches, branches and leaf mass in the harvest of the first semester of the year, while in the second semester there were increases of 40 % in the number of bunches and 10 % in leaf mass. Lyre promoted more balanced vines, showing a better ratio between production and pruning weight (Ravaz index). The rootstocks 'IAC 766', 'IAC 313' and 'IAC 572' increased yield and bunch mass under both training systems, while 'SO4' reduced yield and vigor. The stomatal conductance and instantaneous efficiency of water use were not influenced by either the training system or the rootstock. Under tropical conditions in the São Francisco Valley, 'Chenin Blanc' grapevine may be grown under the lyre training system, preferably on the 'IAC 766' rootstock, to obtain high yields and balanced grapevines.

Climate Change Affects Choice and Management of Training Systems in the Grapevine

“…So, it is no surprise that the GDC system is a good ft for the vigorous Lambrusco family grown in the fertile Po Valley in Italy; similarly, Scott Henry is gaining popularity in the Finger Lakes region in the US under wet conditions. Likewise, some recent work confrms that, once the chosen divided canopy fts well with the objective need of controlling excessive vigor, higher yields associated with unaltered or even improved quality are possible [32][33][34][35][36][37][38][39].…”

Training systems improved agronomic characteristics and quality of ‘Niagara Rosada’ table grapes

“…Rustic or fine grapes grown in systems such as trellis and Y usually have higher fruit yield per vine and yield due to the greater vegetative canopy (Marcon et al 2020). Although these systems enhance the vigor of the canopy, they can reduce the quality of the berries (Leão and Chaves 2021). The espalier is a vertical support system that was consolidated due to its simple construction and low cost, allowing greater planting density and vertical accommodation of the productive branches during their growth (Maia and Camargo 2012).…”

“…The choice of support system should allow intensive cultivation with severe pruning and definition of the plant's canopy architecture (Maia and Camargo, 2012), which directly interferes with the interception of solar rays, plant vigor, and canopy microclimate (Lira et al 2017). In addition, the photosynthetic rate of leaves (Sanchez-Rodriguez et al 2016) may vary, directly affecting the volume and quality of production (Leão and Chaves 2021).…”

Water Use Efficiency and Nutritional Status of a New Grapevine Rootstock Selection

“…The vigor of the shoot is induced by rootstocks, causing an effect on the vegetativeproductive balance [2,10]. In fact, rootstock genotype affects the assimilation of carbon from the air and the uptake of macronutrients from the soil, such as nitrogen (N) and phosphorous (P)-directly related to the development of biomass [11][12][13].…”