Improving Productivity and Fruit Quality of 'Crimson Seedless' Grapes : Effect of Horticultural Practices: Nitrogen and Potassium Fertilization, Defoliation and Fruit Thinning on Grape's yield and Qua

Improving Productivity and Fruit Quality of 'Crimson Seedless' Grapes. For improving fruit quality of 'Crimson Seedless' table grape the balance of vegetative and generative growth was regulated by different N and K fertilization, by pruning, and by fruit thinning. Dry matter, sugar content, acidity as well as anthocyanins, stilbenes, hydroxycinnamic acids, proanthocyanidins and flavonols were estimated as quality parameters. Fruit quality was positively influenced by reduced N-fertilization and by fruit thinning combined with basal leaf removal.