42 



BULLETINf 244, U. S. DEPARTMENT OF AGRICULTURE. 



Table 16. — Yield of uell-stocJced second-growth shortleaf pine in North Carolina. — Con. 



QUALITY III. 





Trees 

 per acre. 



Average 



diameter 



breast 



high. 



Average 

 height. 



Total 

 basal 

 area. 



Yield per acre. 



Age (years). 



Saw timber. 



Solid 





Scribner j Doyle 

 rule. J rule. 



contents. 



10 





Inches. 

 1.6 

 2.5 

 3.4 

 4.2 

 5.0 

 5.7 

 6.4 

 7.0 

 7.6 

 8.2 

 8.7 

 9.2 

 9.7 

 10.2 

 10.6 



Feet. 

 14 

 ■21 

 26 

 31 

 35 

 39 

 42 

 45 

 47 

 50 

 52 

 54 

 56 

 58 

 60 



Sq.ft. 

 60 

 82 

 100 

 114 

 125 

 133 

 138 

 142 

 144 

 145 

 146 

 147 

 14S 

 149 

 149 



Bd.ft. 



Bd.ft. 



Cu.ft. 

 290 



15 



3,270 



2,450 



1,880 



1,405 



1,045 



795 



655 



550 



475 



420 



370 



330 



295 



270 







450 



20 



700 



2,100 



3,400 



4,800 



6,500 



8,300 



10,300 



12,400 



14, 700 



17, 100 



19,600 



22,000 



24,200 





650 



25 





930 



30 



1,100 

 2,300 

 3,600 

 4,900 

 6,200 

 7,500 

 8,800 

 10,100 

 11,400 

 12,600 

 13,900 



1,290 



35 



1,670 



40 



2,070 



45 



2,470 



50 



2,880 



55 



3,300 



60 



3,700 



65 



4,100 



70 



4,490 



75 



4,860 



80 



5,230 







Table 17. — ■ Yearly increment of second-grovAh shortleaf pine in North Carolina. 1 



[Based on 80 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 

 I.- II. 



Quality 

 III. 



Quality Quality 

 I. II. 



Quality 

 III. 



Quality 



I 

 Quality Quality 



h. I m. 



20 



Bd. ft. 

 500 

 530 

 560 

 590 

 620 

 650 

 680 

 655 

 625 

 605 

 580 

 560 

 540 



Bd. ft. 

 370 

 400 

 430 

 460 

 485 

 505 

 525 

 540 

 550 

 560 

 545 

 520 

 490 



Bd.ft. 



240 

 275 

 310 

 340 

 370 

 400 

 425 

 455 

 475 

 500 

 475 

 445 



Bd.ft. Bd.ft. 

 300 



Bd.ft. 



Cu.ft. 

 112 

 117 

 121 

 124 

 126 

 127 

 128 

 123 

 117 

 112 

 106 

 100 

 94 



Cu.ft. Cu.ft. 

 82 50 



25 



320 1 280 

 340 [ 295 

 360 1 310 

 380 315 

 400 320 

 3S0 ! 315 

 365 310 

 350 300 

 330 290 

 315 280 

 300 275 

 285 265 



240 

 250 

 255 

 255 

 260 

 260 

 260 

 260 

 255 

 250 



88 59 



30 



35 



40 



93 

 98 

 101 

 104 

 106 

 104 

 101 

 97 

 92 

 87 

 82 



66 

 72 



76 



45 



80 



50 



82 



55 



84 



60 



83 



65 



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 

 •i sO 

 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 

 115 

 116 

 117 

 117 

 117 

 116 

 116 

 115 

 114 



69 

 74 

 78 

 SI 

 83 

 85 

 87 

 88 

 89 

 90 

 90 

 90 

 90 



32 



25 



38 



30 



43 



35 



48 



40 



52 



45 



55 



50 



58 



55 



60 



60 



62 



05 



63 



70 



64 



75 



65 



80 



65 







i Counties in North Carolina are: Alexander, Burke, Cabarrus. Catawba, Cleveland, Davie, Gaston, 

 Lincoln, McDowell, Rowan, Rutherford, Surry, Wilkes, and Yadkin. 



