EFFECTS OF PHYLLOXERA – RESISTANT VINE CULTIVATION ON BROWN FOREST SOILS

Abstract

The widespread rootstock of phylloxera resistant vine in viticulture, as well as in Western and Eastern Georgia and beyond its borders is Berlandieri x Riparia Kober 5 BB. The paper has studied and discussed the effects of cultivation of phylloxera resistant vine in brown forest soils – in Kvareli agro ecological area, considering the shortage of phylloxera – resistant rootstocks in accordance with the current situation and challenges of the viticulture in Georgia. In 2015, PH reaction and the basic nutrients K2O and P2O5 needed for the plant have been determined in the soil with a laboratory method. In Autumn 2017, in the month of November, i.e. after the completion of vegetation in a mother plant, we examined the soil beneath the vineyard again to determine the effect of phylloxera resistant vine on the soil and the amount of the nutrients it takes out from there