Efficiency of pre-planting treatment of grafted and own-rooted grape seedlings when grown in various soil and climatic conditions

Abstract

In the conditions of the Rostov region and the Chechen Republic in 2021-2023. Experiments were carried out to study the influence of pre-planting treatment of the basal (root) part of seedlings of the varieties Cabernet Sauvignon (grafted crop) and Levokumsky (root crop). The American phylloxera-resistant variety Kober 5BB was used as a rootstock for the Cabernet Sauvignon variety. As a result of the research, it was found that the yield of Cabernet Sauvignon seedlings from a grape school increased in all variants with the use of drugs and was on average higher by 16.9-25.2%, which is a significant indicator in grafted viticulture. The results of research experiments conducted on self-rooted seedlings of the Levokumsky variety show identical results. Treatment with Slavol increased the yield of rooted seedlings from the school in all concentrations. The concentration of 0.4% showed the greatest efficiency (54.4% versus 29.0% in the control), however, at concentrations of 0.5% and 0.6% a decrease in yield was observed, but the yield was higher than in the control, 52 .4% and 40.4% respectively.