THE ASHES I THEIR CHARACTERISTICS AND MANAGEMENT. 
31 
In this region the growth falls off rapidly after 25 years, and is 
not sufficiently sustained to make management profitable. On the 
better classes of sites, however, with moist soils, especially on bottom 
land, green ash has a fair chance of profitable growth in the Plains 
States (Tables 47 to 49) . On bottom lands in western Kansas and 
Nebraska, in young natural stands, green ash has been found to 
average an inch in diameter growth in three to four years, and in 
planted stands it grows an inch in diameter every two to three years. 
In planted stands on uplands in the same region green ash takes five 
to six years to grow an inch in diameter. 
BLACK ASH. 
Table 14 shows the rate of growth of black ash in original all-aged 
selection forests on typical wet land sites in Michigan and Maine. 
Table 14. — Rate of growth of black ash in original all-aged selection forests on wet sites. 
A 
. In northern Michigan. i 
B. 
[n Maine 
Diameter breasthigh. 
Height. 
Diameter breasthigh. 
Height. 
Age. 
Maxi- 
Aver- 
Fast 
Aver- 
Fast 
Maxi- 
Aver- 
Fast 
Aver- 
Fast 
growth. 
age 
growth . 
growth. 
age 
growth . 
growth. 
mum 
growth. 
age 
growth . 
growth. 
age 
growth . 
growth . 
Years. 
Inches. 
Inches. 
Inches. 
Feet. 
Feet. 
Inches. 
Inches. 
Inches. 
Feet. 
Feet. 
10 
1.0 
0.4 
0.7 
9 
12 
1.8 
0.4 
1.1 
8 
15 
20 
2.4 
1.0 
1.7 
17 
24 
4.4 
1.1 
2.7 
15 
28 
30 
3.9 
1.7 
2.7 
26 
34 
7. 2 
1.9 
4.4 
22 
38 
40 
5.5 
2.5 
3.9 
34 
44 
9.9 
2.7 
6.3 
28 
45 
50 
7.3 
3.2 
5.2 
40 
52 
12.2 
3.5 
8.1 
34 
50 
60 
9.2 
4.1 
6.5 
47 
58 
14.1 
4.4 
9.9 
38 
54 
70 
11.1 
4.9 
7.9 
52 
63 
15.7 
5.2 
11.5 
41 
5S 
80 
12.9 
5.8 
9.3 
57 
67 
17.1 
6.1 
13.1 
44 
60 
90 
14.6 
6.7 
10.7 
61 
70 
18.5 
7.0 
14.5 
47 
63 
100 
16.1 
7.6 
12.1 
64 
73 
19.8 
7.9 
15.7 
50 
65 
110 
17.6 
8.6 
13.5 
68 
76 
21.0 
8.9 
16.9 
52 
66 
120 
18.9 
9.5 
14.7 
70 
78 
9.8 
18.1 
54 
68 
130 
20.3 
10.4 
15.9 
72 
80 
10.7 
19.3 
56 
70 
140 
21.6 
11.4 
17.1 
74 
82 
11.6 
20.5 
57 
71 
150 
22.9 
12.4 
18.2 
76 
83 
12.6 
60 
160 
170 
180 
190 
200 
210 
220 
230 
240 
250 
260 
270- 
280 
24.2 
13.3 
14.2 
15.1 
16.0 
16.8 
17.6 
18.5 
19.3 
20.1 
20.9 
21.7 
22.5 
23 3 
19.3 
20.4 
21.5 
22.5 
23.5 
24.5 
78 
79 
81 
82 
83 
84 
S6 
87 
88 
89 
90 
91 
92 
85 
86 
87 
88 
89 
90 
13.5 
14.5 
15. 5 
16.5 
17.6 
18.7 
19.7 
20.9 
22.1 
23.3 
24.6 
61 
63 
64 
66 
67 
69 
70 
72 
73 
75 
76 
290 
300 
24.1 
25.0 
92 
93 
i Based on 90 trees 79 to 292 years old. 
2 Based on 45 trees S5 to 242 years old. 
This growth is much slower than can be expected of second growth 
on land with fair drainage. Black ash planted on uplands in Illinois 
has been found to grow as fast or faster than white ash. 
