PT  - JOURNAL ARTICLE
AU  - Antonietta Baiano
AU  - Ennio La Notte
AU  - Antonio Coletta
AU  - Carmela Terracone
AU  - Donato Antonacci
TI  - Effects of Irrigation Volume and Nitrogen Fertilization on Quality of Redglobe and Michele Palieri Table Grape Cultivars
AID  - 10.5344/ajev.2010.09127
DP  - 2010 Dec 10
TA  - American Journal of Enology and Viticulture
PG  - ajev.2010.09127
4099  - http://www.ajevonline.org/content/early/2010/12/10/ajev.2010.09127.short
4100  - http://www.ajevonline.org/content/early/2010/12/10/ajev.2010.09127.full
AB  - The effects of water management and nitrogen fertilization, on yield, quality and sensory profile of two red table grapes cultivars, Redglobe and Michele Palieri were studied. Two irrigation volumes corresponding to 1000 and 2000 m3/ha and two nitrogen levels represented by 120 and 180 kg/ha were imposed. The effects of these parameters were cultivar-dependent. Concerning Redglobe, significant increases of soluble solids and titratable acidity and significant decreases of resistance to compression, and resistance to penetration were caused by irrigation. The increases of nitrogen fertilization level exerted significant effect only on titratable acidity (increased) and resistance to compression (decreased). Significant interactions between the two practices were demonstrated for soluble solids, pH, and resistance to compression. With regard to Michele Palieri, increasing irrigation volumes caused significant decreases of soluble solids and resistance to penetration and significant increases of resistance to compression. The higher nitrogen level caused decreases of the weight of berries whereas soluble solid content and resistance to mechanical stress increased. Significant interactive effects were highlighted on yield, cluster weight, titratable acidity and resistance to penetration. The not significant correlation between physical/chemical and sensory results indicated that the changes induced by the agricultural practices on composition and mechanical behavior of berries were not perceptible either by a trained panel.