Determination of three different training systems effects on the quality yield and berry colouration of 'Red Globe' grape cultivar in Lakes Region of Turkey
This study was done in a farmland of Fruit Research Institute, located in Eğirdir town of Isparta city of Turkey. It was aimed to evaluate effect of the training systems for 'Red Globe' cultivar in Lakes Region of Turkey. Training systems were rational pergola, Large Y system with 6 wires, Y system with 4 wires. Vineyard was designed according to randomized block design with Red Globe grape cultivar grafted onto 41B rootstock in 2012 year. Trial was done with 3 replicates, each replicate contained 10 grapevines with 3×2 m row distances Data was collected in 2015, 2016, 2017. Phenological observations (bud burst time, bloom time, veraison time, harvest time), yield and quality analyses, maturation index, vegetative development, pruning weight, berry skin colour, degustation values, density of pests and diseases, fruit sunburn ratios and meteorological data had been determined. Bud burst time varied in systems 11-25 April. Harvest time was varied in systems 29 September-7 October. Berry colour was evaluated with dark red violet colour with average L 36.55, a 2.05, b -3.31, chroma 4.21, hue 293.57 values. Three years average quality parameters yield per vine vary according to systems with values of (7.0-11.6 kg), sugar content 16.4-17.6%) titratable acidity (3.8-4.4 g L‑1), single berry weight (9.4-10.2 g). According to 3 years average data, there are some significant and insignificant results variable to training systems but generally results are closer in systems. When these results were evaluated with economic analyses, we can see that Large Y system with 6 wires and Y system with 4 wires may be more hopeful training systems than rational pergola because of low production and labour costs. Getting the precious result, trial will be continued in three years period, because long-term results will be more informative for this type of trials.
Gargın, S. and Altındişli, A. (2020). Determination of three different training systems effects on the quality yield and berry colouration of 'Red Globe' grape cultivar in Lakes Region of Turkey. Acta Hortic. 1276, 57-64
grape, 'Red Globe', yield, quality, training system, colour