A field trial was carried out in a 'Niagara Rosada' table grape vineyard trained on a Y shaped trellis system under permeable plastic overhead cover at Louveira (São Paulo State, Brazil) from 2008 to 2011 aiming to evaluate yield, bunch characteristics and phenology for the summer and winter growing seasons. Yield, cluster weight and size showed higher values during the summer growing season when compared to the winter season. The mean values of yield ranged from 30 to 35 t.ha-1 for the summer growing season and from 20 to 22 t.ha-1 for the winter season. Also the cycle length during the winter (125 days) was shorter when compared to the summer (140 days) growing season.
table grape; training system; Vitis sp
