As cries vine Bashny.Net

The fact is that in the spring, with the arrival of the first heat, the vines come to life, fill your body with moisture from the ground, and then ... crying. Inside the plant takes a unique process - sap flow. When the temperature in the root layer of soil (40-60 cm) 7-9 ° heat at the roots begins spring awakening - they are beginning to absorb moisture from the soil. Under the pressure of 1, 5 air sucked liquid rises back through the vessels of wood and flows from wounds, cuts the trunk, branches, annual vines, as the amount of intake of water in the absence of the leaf surface becomes redundant. That is why they say that grapes are crying ...




The onset of sap flow of grape and degree of its manifestations depend on the temperature and soil moisture. For example, on the southern coast of the Crimea, where the stony skeletal soil heats up faster sap flow of grape usually begins in late March and ends in early April. It continues depending on environmental conditions and grape from 9 to 50 days. The amount of liquid flowing in the sap flow of grape, is a bush: in the Crimea, to 1, 4 liters of fresh cut and when to 0, 2 l without refreshing slice; in the Odessa region 3 and 1, 4 l, in the Krasnodar region - 5 and 2 liters.



Vinogradov tears called PASOK. PASOK is a very weak solution of organic and mineral substances. The intensity of the sap flow is directly dependent on the moisture content of the soil and the degree of development of the bush. Sap flow ends after the buds of grapes, when the young leaves of grapes begin to evaporate water.



Per liter of sap contained 1-2 g of solids, of which 66% are organic (sugar, nitrogen), and the rest - mineral (potassium, calcium, phosphoric acid, etc.).



In case of insufficient soil moisture (drought), "weeping" vine does not happen. At a later period of mourning in the bud vine sap contains more organic substances that can weaken the strength of vines.



If soil moisture is sufficient pressure in the vine, so much so that as soon as you make it to the cut, immediately begin to act as a drop of sap.



But when the grapes started to cry, so soon we should expect buds and lush green foliage



This means that the spring is fully included in its own right in the vineyards ...



Source: pilip-pilipich.livejournal.com