When growing grapes should be taken to protect it from adverse environmental conditions and to prevent crop losses. The above mentioned heat-loving grape and the need for bush the best conditions of lighting and heating the sun. At air temperatures below – 18 begin to be damaged eyes, and at – 20 or more damaged vines and wood. Vine ripened less damaged by low- temperatures, different grape varieties have different frost. Eyes can. Damaged by winter icing and damping off. Stronger affected vines, when immediately after the thaw begins decrease in temperature.
Due to the fact that the temperature below – 20 in winter, a phenomenon common in Ukraine, almost throughout the country to cover the bushes for the winter underground. Only on the southern coast and in the foothills Crimea, as well as in parts of the Transcarpathian region (with the exception of the lowlands) vines in the winter you can not hide. In the southern areas of Odessa, Kherson and Zaporizhzhya regions, where winter is usually not large and cold where owing to wet and warm weather is often observed damping off holes, we can restrict hilling bushes so that the vine was covered for 4-5 holes. The expediency of such ukryvki confirmed by experiment. Point is that if damaged by frosts top of the vine is cut short bushes, and the corresponding load is achieved by increasing the number of fruit branches. At the same damping off holes in the bottom of the vine shoots are cut longer, and load is achieved by lengthening the left by the fruit stems. In the north-eastern regions of Ukraine should consider the possibility of damage to winter frosts root vines.
It is believed that root system of European varieties resistant to lowering the temperature of the soil – 6-8 . Such decrease, especially in the absence of snow cover and dry soil, are in the northern and eastern regions of the republic about once every 8-10 years. If there is a danger of soil freezing on small vineyards preferably after the ground cover bushes and hills cover the aisle for a further 10-15 cm of humus, leaves, peat, some of IPT other organic material. In the spring after the coldest winters on young plantations should check the roots by digging. Damaged roots in cross sections have a dark color. If there is damage to shrubbery should be given a small load so as not to weaken them and allow them to gradually restore the root system. During bud break and early shoot growth is necessary to protect the vineyards from the lower the temperature at freezing. Source: The fruit garden