Article Figures & Data
Figures
- Figure 1
Comparison of percentage of crown removed versus wound growth inhibition for plane tree, red maple, and Norway maple treated with Atrinal In 1984. Wound growth Inhibition equals the relative wound regrowŧh of untreated trees minus that of Atrinal treated trees. Relative wound regrowth was determined by comparing wound regrowth versus sprout growth prior to wounding.
Tables
- Table 1.
Comparison by species of the average sprout growth and standard errors In Inches of trees trunk-Injected with Atrinal In 1984 versus untreated trees.
Previous Growth 1984 1985 1986 Plane tree * ** Treated 7.1 ±1.2 10.8 ±1.8 22.5 ±3.5 .... Control 7.7 ±2.0 20.9 ±4.8 33.2 ±6.0 .... Red maple ** Treated 5.4 ±0.5 5.4 ±0.6 17.2 ±1.2 .... Control 4.9 ±0.6 7.1 ±1.1 18.8 ±1.5 .... Norway maple * * * Treated 6.0 ±0.2 3.6 ±0.3 19.3 ±1.2 23.6 ±2.2 Control 5.8 ±0.3 5.4 ±0.8 23.4 ±2.7 29.9 ±4.0 - Table 2.
Comparison by species of the longest sprout growth and standard errors In inches of trees trunk-Injected with Atrinal in 1984 versus untreated trees.
1984 1985 1986 Plane tree * ** Treated 22.2 ±4.5 57.1 ±9.0 .... Control 47.9 ±13.2 77.0 ±20.9 .... Red maple * ** Treated 11.7 ±1.2 44.4 ±2.2 .... Control 19.9 ±3.7 49.0 ±4.3 .... Norway maple * * * Treated 8.3 ±1.0 48.4 ±2.4 64.8 ±3.8 Control 11.7 ±1.6 63.3 ±6.0 83.3 ±9.4 - Table 3.
Average sprout growth and standard errors in inches of Norway maples trunk....injected with Atrinal in 1984 in Yonkers, White Plains, and New Castle, New York.
1983 1984 1985 1986 Yonkers ** Treated 6.7 ±0.6 7.3 ±1.1 16.3 ±2.4 .... Control 5.3 ±0.9 6.7 ±1.9 12.8 ±1.9 .... White Plains * Treated 5.0 ±0.3 1.2 ±0.1 11.5 ±0.7 .... Control 5.8 ±0.5 1.5 ±0.3 11.4 ±0.9 .... New Castle * * * Treated 6.6 ±0.2 4.6 ±0.5 27.8 ±2.0 38.4 ±2.8 Control 6.0 ±0.3 8.4 ±1.2 37.5 ±4.0 43.1 ±4.3 - Table 4.
Difference in dbh, urban stress, and percentage of crown removal between trees growing in Yonkers, White Plains, and New Castle, NY.
Community Tree dbh (inches) Urban stress ratinga Crown removed(%) Yonkers 14.2 1.15 11 White Plains 9.43 0.82 11 New Castle 5.19 0.06 27 a —Rating based on cumulative presence of wounds, root girdling, and exposed roots. A rating of 1 would indicate that on average each tree is subject to at least one major stress factor such as wounding, girdling roots, or exposed roots.
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