Spring applications of several plant growth regulators were evaluated for their effects on delaying bloom in six cultivars of almond namely:Mamay, Monagha, Nonpariel,Azar shahar, Hybrid-43 and Hybrid-46. Sprays of GA3,CCC,ABA and IBA at 250 PPM on excised twigs at green tip strage had no significant effect on time of bloom (p>0.05),but, ethephon (2-chloroethylphonict acid)at 250 PPM applied to six cultivars of almond, significantly delayed blooming (p
PPM.
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