Studii asupra valorii agrobiologice şi tehnologice a soiurilor de struguri pentru vinuri aromate cultivate în podgoria Iaşi

The purpose of this paper is to study the climatic conditions of 2017 and to correlate them with the quality of the grape varieties for aromatic wines (Busuioacă de Bohotin, Tămâioasa românească and Muscat Ottonel), from the Ampelographic Collection of the Faculty of Horticulture Iasi. The climatic conditions specific to 2017 and their influence on production (grape mass, sugars, acidity, mass of 100 berries, etc.) were analyzed. The line of production specific to Iasi vineyard, namely the production of aromatic wines, should be maintained also under the current climatic conditions

Influenţa dioxidului de sulf şi a dimetil dicarbonatului asupra calităţii vinurilor albe

Beinga complex system in continuousevolution, wine needs different stabilization and conditioning treatments.Sulphur dioxide and dimethyl dicarbonate areone of the most used in winemaking because they havean important role in wine protection and stabilization.For this study, nine wine variants were obtained from a blend of FeteascăRegală and Muscat Ottonelvarieties. All samples were treated with6 % SO2solution anddimethyl dicarbonateliquid solution, in various concentrations. Theaim of this experimentwas to follow the evolution ofphysical-chemical and chromatic parametersof wines, depending on treatments used and the analyzes period. The analyzes were repeated and compared atthree months difference.Both treatments, SO2and dimethyl dicarbonateshowed significant influence on the physical-chemical and chromatic characteristics of wines, dependingon added substances concentration and the analysis periods, representing a good alternative for modern winemakin

Influenţa conţinutului de hidraţi de carbon asupra calusării la altoire la soiurile pentru struguri de masă Gelu şi Paula

The factors that determine the formation of the callus at the grafting point, respectively the percentage of vines capable of being planted in the nursery, are of genetic, technological and ecological nature. Thus, the genetic nature of the two symbionts is crucial to the success of grafting. In the present work determinations were made regarding the behavior of table grape varieties Gelu and Paula grafted on three rootstocks RipariaGloire, Berlandieri x Riparia Selection Oppenheim 4-clone 4 Blaj and Berlandieri x Riparia Selection Crăciunel 2. It was found that the highest total content of carbohydrates had the rootstock RipariaGloire (13.49%), followed by Crăciunel 2 (12.78%) and SO4-4(12.02%). In the Vinifera varieties the same indicator was higher for Paula grape variety (14.32%) and for Gelu variety (13.07%). As a result of the grafting and forcing, the following aspects resulted: the percentage of vines suitable for planting was the highest in the Paula variety grafted on Crăciunel 2, respectively 99%, and in the Gelu variety grafted on Ripariagloire, of 98%. The vines for which the grafting point was complete, where the buds entered vegetation and the root primordia was in maximum percentage were found at the Paula / Crăciunel 2 variant, at 76%. Gelu / Crăciunel 2 variant resulted in obtaining the most vines (7%) that formed root primordia at the intermediate node as well

Comportarea unor soiuri de viţe portaltoi cultivate pe diverse mijloace de susţinere în podgoria Iaşi

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