The Growth and Strength of Apple Trees with Unions Weakened by Frost Damage in the Nursery

Abstract

SummaryApple trees with weak and normal unions were planted out in the orchard and grown for three years, during which there were no significant differences in the amount of annual shoot growth. With cvs Cox and Spartan on MM. 106 there was no significant residual effect of the initially weak unions on their strength at the end of three years; there was, however, a residual effect with cv Egremont on M.26, although probably not of practical importance.