Behaviour of various rootstocks on different trellising systems in Iaşi vineyard

Abstract

The appearance of the phylloxera on the European continent has in time led to a radical change in the system of vine propagation and cultivation, namely the transition to grafted vine-growing and the use of phylloxera -resistant American species as rootstocks. Cultivated in general to obtain cuttings for the rooting and grafting of grape varieties, rootstock varieties are an important factor in wine production. Therefore, the establishment of specific technological links for rootstock cultures should be the focus of specialists in viticulture. In the present study, during the year 2017 three varieties of rootstocks were studied, namely Berlandieri Riparia Kober 5 BB, Berlandieri Riparia Selection Oppenheim 4 and Chasselas Berlandieri 41 B, all cultivated in the ampelographic collection of USAMV Iaşi. Each of these varieties was trellised on the following systems: a 4 legged pyramid, a monoplane trellis with diagonal vine training and a T-shaped horizontal trellis. Following the studies, it was found that although the length of the canes was higher at pyramid training, the percent to thelength of the matured wood was registered in the monoplane trellis with diagonal vine training. The weakest results were registered in the lead in T-shaped horizontal trellis.