Promalin promotes lateral shoot development of young cherry trees

Abstract

Promalin (a commercial formulation of N-(phenylmethy1)-1 H-purin-6-amine plus gibberellins A4 + A7) applied at bud swell and bud burst increased the number of spurs and lateral shoots on one-year-old wood of primary scaffold limbs of young cherry trees. Painted applications gave more consistent responses than sprayed applications. Total length of shoot growth on treated three-yearold cherry trees was more than double that of control trees and lateral shoots induced by Promalin had broad crotch angles.