Succession of spring weed vegetation under the conditions of glyphosates application

The change in the species composition of weed vegetation in the plantations of grapes on alluvial meadow soils is largely due to the features of the development of their vegetative mass and the system of agrochemical provision, mainly by the use of herbicides. In turn, the morphology of vegetative organs is determined by the taxonomic characteristics of weeds. Early spring plants, families of clove and labial flowers (stellate, thigh, Veronica, etc.), as a rule, develop a more powerful overground part and a root system branched in the horizontal plane, but shallow in depth. Plants of the families of cruciferous and astrope (shepherd's bag, bug, sow, bojadak, etc.) form a large mass of the aerial part and a deep, rod-shaped root system. Causes of different degrees of weed and flora. It has been established that the use of glyphosate-containing herbicides contributes to the total destruction of weed plants of clove and cloverberry families with subsequent species of composition to astropea and crucifers. In plantations from cover varieties, plowing of bushes and their blowing are carried out on time. By this time, the weeds in the rows of plantations are growing. As a result, as a result of plowing and blowing out the bushes, the sprouting and stalking seeds of weed plants are dying. The revealed regularity of succession of alluvial-meadow soils. The change in the types of glyphosate used affects the timing of their onset of weeds, but there is no difference in their effectiveness over a long period. Thus, the Hurricane causes the death of more than 80% of the weeds 7 days after its application, and Roundup and Ground almost 60%. Two weeks later, the degree of weed loss in comparison with the control exceeded 90-95%. The fact of the noticeable effect of herbicides on the quality of the vine harvest is not revealed. So, there was no difference in the content of sugars and acidity of berries, as well as the phenolic compounds in the juice of the two varieties of grapes of different maturity, although harvesting of the 12-15 days earlier than the Gift of Magarach.