Under the shelter of a film, which is a good average daily temperature jumps smooths it, and just raspuhnuv sprouted greens shoots, at low positive temperatures as would freeze and sometimes scaly buds sit under one and a half weeks. And this phenomenon is, oddly enough was a positive factor in the increase of fruitfulness grapes. I would like to quote from the book of graduates of the Kuban agrouniversiteta Owner-practice for over thirty years has worked in the vineyards agronomist Don V. Drilling: "It is known that in the spring low temperatures (8-10 C), only kidneys swell, but do not bloom, and it contributes to the development and formation of new inflorescences, while increasing their fruitfulness. With early onset of high temperatures kidney bloom faster, but they are less fruitfulness. " The next phase of the spring of grapes – the intensive growth of shoots, leaves and inflorescences shaping, and diurnal growth of shoots during this period may reach 15 cm this time spend the first fragment of the green shoots.
But before you start this procedure you must learn by heart itself, as a rule, the following: the highest fruitfulness different eyes are located at sites with a stepson and tendril, less fertile eyes only with the stepchild, or only with a mustache. Very low fruitfulness have eyes on the nodes that do not have any stepchildren or tendrils. That's why I recommend not to break out stepchildren completely, but only pinch them over 2-3 pieces. Also, contrary to the advice of many publications on agricultural grapes do not advise to carry out a short pruning vines to fruition.