BALSAM FIK. 
57 
YIELD. 
ON SMALL SAMPLE AREAS. 
The yield of balsam fir fluctuates within wide limits. Since it 
grows with spruce and other species, its yield naturally depends upon 
the degree of admixture. An idea of what can be expected from 
balsam fir may best be formed from pure stands in the swamps or 
flats. For New York a good average for large flats, cutting for pulp 
to 7 inches diameter breast high, is 15 cords to the acre. Exceptional 
areas have cut as high as 40 cords. In swamps, while the stands are 
usually dense, the individual trees are of small size, and the yield per 
acre on the whole is smaller than on the flats. Ten cords to the acre 
may be considered a good average. On the hardwood slope the yield 
varies more than for any other type; on an average it runs about 7 
cords to the acre. 
In Maine the yield runs much higher than in New York. Pure 
stands of balsam fir on flats will yield, as a general rule, about 25 
cords to the acre and occasionally as high as 30 cords for stands from 
70 to 100 years old. On the hardwood slope the yield is only half 
of that on the fiat, about 12.5 cords to the acre. 
Tables 46 and 47 give the results of actual measurements of yield 
in the Adirondacks and in Maine. 
Table 46. — Yield of balsam fir in New York, based on 10 sample plots, covering an area 
of 9 acres. 
SWAMP. 
Average age of merchantable stand (years). 
Total yield per 
acre. 
Average 
number of 
merchant- 
able trees 
per acre. 
Mean annual 
increment per 
acre. 
80 
Cubic feet. 
922 
Cords. 
10.2 
88 
Cubic feet. 
11.5 
Cords. 
1 
FLAT. 
1,270 
1,312 
1,443 
13.2 
15.3 
15.0 
102 
110 
140 
14.1 
14.6 
16.0 
90 
i 
h 
90 
Average 
1,342 
14.4 
117 
14.9 
i 
HARDWOOD SLOPE: 
70 
444 
685 
760 
713 
607 
928 
4.6 
7.1 
8.0 
7.7 
6.4 
9.7 
36 
60 
49 
55 
46 
86 
6.3 
9.8 
10.9 
8.9 
8.7 
13.3 
70 
80 
70 
Average 
690 
7.3 
55 
9.6 ^ 
