LONG-TERM CONTROL OF TREE GROWTH IN UTILITY RIGHTS OF WAY USING GROWTH REGULATORS

in HortScience
View More View Less
  • 1 Department of Horticulture and Forestry, University of Arkansas, Fayetteville, AR 72701

Twelve to 15 year old silver maple and wild cherry trees were top pruned severely to a height of 5m and then trunk injected with Prunit 20g/l at 0, 0.1, 0.5 or 1.0 g/inch of trunk diameter or were treated with a trunk pour of Prunit 50W at the rate of 0, 0.5 or 1.0 g/inch of trunk diameter. Treatment effects were not obvious on any trees until 12 months after treatment. After 36 months maples receiving the two highest rates had made less than 50 cm of growth above the pruned top of the tree whereas the untreated control had produced 3 m of new shoot growth. The 0.1 g rate produced less aesthetic disruption to the appearance of the tree and reduced growth to 1.2 m. Wild cherry trees responded similarly but the amount of regrowth following pruning was less. Maple trees receiving the trunk pour treatment exhibited a 50% reduction in new shoot growth 36 months after treatment.

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 22 6 1
PDF Downloads 47 26 3