Effects of Pruning Intensity on Grape Yield and Quality of Erciş Grape Cultivar (Vitis vinifera L.)

Abstract

The present study was conducted to investigate the effects of different pruning intensity treatments on grape yield and quality of Erciş grape cultivar in the year 2014. The gobble-trained grapevines grown on their own roots were subjected to three different pruning intensities during
winter pruning [16 buds/grapevine (8 shoots x 2 buds); 24 buds/grapevine (8 shoots × 3 buds); 32 buds/grapevine (8 shoots x 4 buds)]. Compared to low pruning intensity (16 buds/grapevine), high pruning intensity treatments (32 buds/grapevine) increased grapevine yield by 55%,
but decreased cluster weight by 17%, cluster width by 25.2%, cluster length by 12.5%, grape width by 10.9%, grape length by 6.7%, 100-grape weight by 22.7% and water soluble dry matter yield by 2.6%.