The content of polyphenols in low-growing apple rootstocks depending on the type of soil in Central Russia

Field studies were carried out in 2017-2021. horticultural farms of Central Russia. We analyzed 11 varieties apple trees four seasons (winter, spring, summer, autumn) for the content polyphenols rootstocks - dwarf 62-396, semi-dwarf 54-118 and PB-9, grown on 7 types soil: floodplain granular, layered , podzolized chernozem, leached meadow-chernozem, gray forest sod-podzolic soil. It was found that all organs cultivated trees, largest amount is concentrated 1-2-year-old shoots. The highest concentration flavonols shoots studied catechins rootstock when growing most low-fertile soddy-podzolic less affected by weather conditions year than catechins. annual tree an unstable variable indicator. Its value may increase or decrease 5.4-12.0 times during first two years. Of three rootstocks, noted 54-118. with proportion fine dust physical sand a medium soil, 62-396 increases, more are contained With increases PB-9 tree. proposed accumulation should be considered as adaptation to soil fertility.