RESEARCH ON THE INFLUENCE OF SOME TECHNOLOGICAL FACTORS ON GRAPE PRODUCTION UNDER THE CONDITIONS OF THE TÂRNAVELOR VINEYARD

The paper presents the results of the researches carried out during the period 2017-2019, under the conditions of the Târnavelor Vineyard, in the Jidvei-Alba area, regarding the influence of some technological factors on the level of grape production. The factors considered in the study were: Factor A - irrigation regime, with graduations a1 - non-irrigated, a2 - irrigated at 50% IUA; Factor B - fertilization, with graduations b1 - basic fertilization, b2 - basic fertilization + chemical fertilization; b3 - organic fertilization; Factor C, biological material, with graduations c1 - Muscat Ottonel variety, c2 - Feteasca Regala variety, c3 - Sauvignon Blanc variety. The production results recorded during the three years of experimentation highlighted in particular the favorable effect of irrigation on the production of grapes, in all three varieties, regardless of the applied fertilization level

THE INFLUENCE OF TECHNOLOGICAL FACTORS ON QUALITY INDICATORS FOR THREE VITIS VINIFERA VARIETIES CULTIVATED IN THE JIDVEI VINEYARD

The article presents partial results of the study regarding the influence of some technological factors on the evolution of quality indicators for three Vitis vinifera L. varieties, namely Fetească Regală, Muscat Ottonel and Sauvignon Blanc. The experiments underlying the research were conducted in Jidvei’s experimental field, located in the eastern part of Alba County, on the lower course of the river Târnava Mică. The three varieties were tested under different irrigation and fertilization conditions to determine grapes’s levels of sugar, acidity and pH, which are responsible for the quality of wine production

The Economic Impact of Paraffin Type and Substrate Mixture on the Production of Grafted Vines—Case Study Muscat Ottonel

The study focussed on a nursery by analyzing its strategic choices to obtain the best profit on grapevine planting material. The production of grapevine grafts involves high labor and material costs. In this study, Muscat Ottonel grape variety grafted on Oppenheim Sellection 4 rootstock was paraffined with different types of wax: standard wax (SW), paraffin with 8-chinolinol (8C) and paraffin with oxiquinolein (OX) (before callusing), and silver color (S), blue color (B) and standard (SW) paraffin (after grafting callusing and before planting in field nursery). After uprooting from the field nursery, all variants were paraffined with red paraffin for storage. The unit cost price was calculated based on total expenses and the yield of grafts obtained in the vine field nursery. The lowest price per unit cost was recorded for the 8C/S variant, directly related to the first quality yield after uprooting from the nursery. The highest profit rate was for the 8C/S variant, while the lowest was registered to the SW/SW variant. The grafts of the 8C/S variant were potted in three rooting mixtures. Variant B (forest ground 60% + black peat 25% + river sand 10% + conifer sawdust 5%) generated the highest yield of the potted grafted vine with a rate of profit of over 170%, due to the lower production cost and high yield of potted vines, while variant C (forest ground 70% + river sand 15% + conifer sawdust 15%), determinate the lowest yield. Results may be useful in orienting the small-to-medium grapevine planting materials producers to choose the best cooperative strategies, which nurseries might implement to enhance their competitiveness and survive in the long-run