RT Journal Article
SR Electronic
T1 Trunk Injection of Plant Growth Regulators to Control Tree Regrowth
JF Arboriculture & Urban Forestry (AUF)
FD International Society of Arboriculture
SP 141
OP 144
DO 10.48044/jauf.1981.034
VO 7
IS 6
A1 Subhash C. Domir
A1 Bruce R. Roberts
YR 1981
UL http://auf.isa-arbor.com/content/7/6/141.abstract
AB In a continuing study of the chemical control of trees under utility rights-of-way, the sprout regrowth of the American sycamore (Platanus occidentalis), silver maple (Acer saccharinum), red oak (Quercus rubra), and shamel ash (Fraxinus uhdei) injected with water solutions of 1,2-dihydro-3,6-pyridazinedione (maleic hydrazide, MH) and the sodium salt of 2,3:4, 6-bis-0-(1-methylethylidene)-iz-L-xylo-2-hexulofuranosonic acid (dikegulac) in the spring of 1977 was recorded again in the fall of 1979 after 3 growing seasons. High concentrations of dikegulac were effective in reducing regrowth on silver maple and red oak after 3 years when compared to untreated controls. Although treatmens made on sycamore and shamel ash showed no significant effect in 1979, visual observations by utility line clearance personnel suggest that chemically treated trees will need no trimming for an additional year or two.