Discloses a method of mitigating alternate bearing in a perennial fruit tree, comprising administering to the perennial crop plant a composition comprising an effective amount of 9-beta-D-adenosine, adenosine, inosine, hypoxanthine and xanthine. Further discloses where the composition comprises 6-benzylaminopurine, zeatin, zeatinriboside, kinetin, isopentenyladenine, isopentenyladenosine, 1-(2-chloro-4-pyridynl)-3- phenylurea, gibberellic acid, 6-benzyladenine, 6-benzyladenosine, 2,3,5-triiodobenzoic acid, DPX 1840, 9-hydroxyflorene-9-carboxylic acid, and naptalam (N-1-naphthylphthalamic acid), fluridone (1-methyl-3-phenyl-5-[3-trifluromethyl(phenyl)]-4-(1H)-pyridinone), abamine, 1- butanol.
