30 
BULLETIN 299, U. S. DEPARTMENT OF AGRICULTURE. 
Table 12. — Rate of growth of green ash x on river bottom land, Mississippi County, 
Arkansas, based on 394 trees 20 to 160 years old. 
Age. 
Fast growth. 
Average growth. 
Diameter 
breast- 
high. 
Height. 
Diameter 
breast- 
high. 
Height. 
Years. 
10 
20 
30 
40 
50 
60 
70 
80 
90 
100 
110 
120 
130 
140 
150 
160 
Inches. 
4.0 
7.8 
11.4 
14.6 
17.4 
19.9 
22.1 
24.2 
26.2 
28.1 
29.9 
31.7 
Feet. 
Inches. 
2.1 
2.9 
7.4 
9.7 
11.7 
13.5 
15.3 
17.0 
18.6 
20.1 
21.7 
23.1 
Feet. 
14 
31 
45 
57 
67 
76 
85 
92 
99 
105 
111 
117 
122 
126 
130 
134 
1 Measurements taken by G. M. Homans, 1905. 
In growing green ash under management it should be possible to 
secure an average rate of growth on bottom lands well above the aver- 
age for growth under natural conditions, but hardly as rapid as the 
figures for fast growth given in Tables 10 and 12. 
On uplands, and farther north and west, the rate of growth of 
green ash is considerably slower. A green ash plantation on good 
prairie soil in central Illinois shows an average rate of growth under 
management no greater than that under natural conditions on south- 
ern bottom lands, and in Iowa the growth is still slower. The per 
acre yield will always be greatest on the well-drained, moist bottom 
lands of the South, where the greatest density of stand is possible. 
Farther west the possibilities of growth are constantly less. The 
rate of growth in upland plantations in eastern Nebraska is consid- 
erably slower than the average for natural bottom land growth in 
the East. 
Table 13. — Diameter and height growth of green ash 1 in eastern Nebraska in upland 
plantations, diameter growth based on 57 trees and height on 216 trees. 
Age. 
Average. 
Dominant. 
Height. 
Years. 
Inches. 
Inches. 
Feet. 
5 
10 
15 
1.1 
2.1 
2.9 
11 
19 
24 
3.3 
20 
3.6 
4.5 
28 
25 
4.4 
5.6 
32 
30 
5.0 
6.5 
36 
35 
5.3 
7.1 
38 
40 
5.4 
7.5 
40 
45 
50 
5.5 
5.6 
41 
43 
1 Measurements taken by F. G. Miller, 1905. 
