Earlier fall leaf drop. New shoots may be red to red-brown. Foliage may be sparse, small and distorted. Very distinctive symptoms. Leaves may crinkle and roll upwards.
Young leaves are small and distorted with curled back leaf tips.
Shoots may be stunted and show some dieback. Older leaves show marginal and interveinal reddening. Leaves may be brittle and thin. Apples may drop prematurely. In the fall as temperatures cool plants are unable to take up Mg and leaves will turn a purple color.