42 BULLETIX 244, U. S. DEPABTMEXT OF AGRICULTUEE. 
Table 16. — Yield of well-stocked second-growth shortleaf pine in North Carolina. — Con. 
QUALITY III. 
Age (years). 
Average 
Trees 
diameter 
per acre. 
breast 
high. 
Inches. 
1.6 
3,270 
2.5 
2,450 
3.4 
1,880 
4.2 
1,405 
5.0 
1,045 
5.7 
795 
6.4 
655 
7.0 
550 
7.6 
475 
8.2 
420 
8.7 
370 
9.2 
330 
9.7 
295 
10.2 
270 
10.6 
Average 
height. 
Feet. 
Total 
basal 
area. 
Sq.ft. 
60 
82 
100 
114 
125 
133 
138 
142 
144 
145 
146 
147 
148 
149 
149 
Yield per acre. 
Saw timber. 
Scribner j Doyle 
rule. 
Solid 
contents. 
uoyie 
rale. 
Bd.ft. : Bd.ft. 
700 
2,100 
3,400 
1,100 
4,800 
2,300 
6,500 
3,600 
8,300 
4,900 
-10, 300 
6,200 
12,400 
7,500 
14,700 
8,S00 
17,100 
10,100 
19, 600 
11,400 
22,000 
12,600 
24,200 
13,900 
Cu.ft. 
290 
450 
650 
930 
1,290 
1,670 
2,070 
2,470 
2,880 
3,300 
3,700 
4,100 
4,490 
4, 860 
5,230 
Table 17. — Yearly increment of second-growth shortleaf pine in North Carolina. 1 
[Based on SO sample plots in well-stocked stands; total area, 21.6 acres. Saw timber scaled to 6 inches in 
top diameter. Stump height, 1 to 1.5 feet. Volume of stem is from 1-foot stump to 6-inch top diameter, 
including bark. All trees 6 inches and over diameter breast high were scaled.] 
PERIODIC ANNUAL INCREMENT. 
Scribner rule. 
Doyle rule. 
Solid contents. 
Age (years). 
Quality 
Quality Quality Quality Qualitv Quality 
h. | in. j i. ii. | ni. 
Quality Quality Quality 
I. | II. III. 
20 
Bd. ft. Bd. ft. 
500 j 370 
530 ' 400 
Bd.ft. j Bd.ft. Bd.ft. ' Bd.ft. 
300 ' 
Cu.ft. 
112 
117 
121 
124 
126 
127 
128 
123 
117 
112 
106 
100 
94 
Cu.ft. i Cu.ft. 
82 50 
25 
.240 320 2S0 
88 59 
30 
35 
560 
590 
620 
650 
680 
655 
625 
605 
5S0 
560 
540 
430 1 275 340 295 ' 
460 310 1 360 310 1 240 
93 66 
98 72 
40 
485 
505 
525 
540 
550 
560 
545 
520 
490 
340 380 315 1 250 
370 400 320 j 255 
400 3S0 315 255 
101 76 
45 
50 
104 j 80 
106 82 
55 
60 
425 365 310 
455 350 300 
475 330 290 
500 315 280 
475 300 275 
445 285 ! '265 
260 
260 
260 
260 
255 
250 
104 . 84 
101 83 
65 
97 
92 
87 
82 
81 
70 
78 
75 
75 
80 
71 
MEAN ANNUAL INCREMENT. 
20 
285 
335 
370 
405 
430 
450 
470 
490 
500 
510 
515 
520 
520 
175 
205 
240 
270 
295 
320 
340 
360 
375 
385 
395 
405 
410 
50 
80 
110 
135 
160 
185 
205 
225 
245 
260 
275 
295 
310 
100 
140 
175 
205 
225 
245 
255 
265 
270 
275 
275 
280 
280 
15 
65 
105 
135 
160 
175 
190 
200 
210 
215 
220 
225 
225 
35 
65 
90 
110 
125 
135 
145 
155 
165 
170 
175 
107 
109 
111 
113 
X15 
116 
117 
117 
117 
116 
116 
115 
114 
69 
74 
78 
81 
83 
85 
87 
88 
89 
90 
90 
90 
90 
32 
25 
38 
30 
43 
35 
48 
40 
52 
A5 
55 
50 .. - 
58 
55 
60 
60 
62 
65 
63 
70 
64 
65 
so 
65 
1 Counties in North Carolina are: Alexander, Burke, Cabarrus, Catawba, Cleveland, Davie, Gaston, 
Lincoln, McDowell, Rowan, Rutherford, Surry, Wilkes, and Yadkin. 
