With only two seasons in a year: a cooler dry winter and a hot summer, vines have no dormant period. This shortens life expectancy and pushes vines to grow new shoots right after pruning. The potential for two or three yields per annum is given unless carefully tamed for the sake of quality wine production.
The indian vinter prunes twice. Foundation pruning is normally in May to prepare the vines for the monsoon season. Pre-growing-season pruning is normally between late August and the beginning of October. Timing is critical, because, onthe one hand, the earliest ist is done, the higher the mildew pressure as the monsoon is going out:and, on the other hand, the later is is done the later the harvest will be in the spring when temperatures are on the rise with the approach of the monsoon.
Two types of trellis are prevalent in the vineyards of quality Indian producers. The cordon system allows for a single -or double -Guyot and vertical shoot positioning (VSP), whilst the Y-Trellis is favoured in hot tropical areas allowing for even ripening and deeper colour as a result of the increased exposure to sun.
The Growing season falls between October and March, a dry period ensuring very low levels of disease pressure and necessitating irrigation, The change of temperatures during the growing season, however, is the exact opposite to that of traditional wine growing regions in the world. The mercury drops from bud break onwards and starts to rise again as harvest approaches. Hence is the skill of the winemakers required to achieve a balance between phenolic and sugar ripeness whilst retaining sufficient acidity in the grapes.