TY - JOUR T1 - The Physiology of Tree Growth Regulators JF - Arboriculture & Urban Forestry (AUF) JO - JOA SP - 39 LP - 41 DO - 10.48044/jauf.1990.012 VL - 16 IS - 2 AU - S. L. Kimball Y1 - 1990/02/01 UR - http://auf.isa-arbor.com/content/16/2/39.abstract N2 - Chemical regulation of tree growth has been evaluated for over a decade. There is increased confidence today in the use of chemical growth regulators due to the development of chemicals that regulate growth by inhibiting biosynthesis of gibberellins and to an improved understanding of application technology. These products are effective growth regulators when applied by either trunk injections or soil applications; bark banding treatments are presently under development. ER -