Özet:

During the active growing period, green pruning operations are carried out to establish a balance between the vegetative and generative development of the vines. In this research conducted in the Tekirdağ province, the effects of leaf removal and cluster thinning applications on shoot characteristics were investigated in a 10-year-old vineyard established with the Michele Palieri/110R combination. The experiment was carried out for two years during the 2018-2019 and 2019-2020 vegetation periods. Four different leaf removal and cluster thinning applications [control (no cluster thinning and no leaf removal), cluster thinning, leaf removal, leaf removal-cluster thinning] were performed at three different developmental stages (berry set, bunch closure, veraison). To determine shoot characteristics, shoot length (cm), shoot elongation rate (cm per 15 days), pruning wood weight per vine (vegetative development status) (kg per vine), vigor (weight of one-year-old cane) (g), strength, Ravaz Index, total pruning wood weight (kg), and yield (kg per vine) criteria were examined. As a result, the balance between vegetative and generative development (Index Ravaz) was achieved during the veraison with cluster thinning (9.34), leaf removal (9.98), and control (10.44) applications, respectively. This had a positive effect on shoot characteristics. Additionally, cluster thinning (13.66 kg per vine) and leaf removal-cluster thinning (9.89 kg per vine) reduced the yield as expected.