Table 1b.
Effect of tree diameter on injectability of mature American elm trees in 1982.
Size class (dbh cm)
Number of trees
Chemical uptake
Time (hr)
Rate l/hr/cm)
<50
30
2.8 (1.5-7)
*
0.81
50-62
26
3.0 (1.5-7)
0.67
63-75
22
2.8 (1.5-6.5)
0.74
>75
5
2.8 (2-3.5)
0.72
Total Mean
83
2.8
0.75
↵
* Mean (range)