SHOETLEAF PINE : IMPORTANCE AND MANAGEMENT. 



29 



Table 14. — Yield 1 per acre of fully stocked second-groiotli shortleaf pine m 



North Carolina? 



QUALITY I. 











Total 

 basal 



Yield of saw timber. 





Age. 



Trees 



Average 

 diameter 



Average 







Solid 







per acre. 



(breast- 

 Mgh). 



height. 



(at breast- 

 height). 



Scribner 

 rule. 



Doyle 

 rule. 



measure. 



Years. 





Inches. 



Feet. 



Sq.ft. 



Bd.ft. 



Bd.ft. 



Cu.ft. 



20 



1,000 



5.8 



40 



158 



5,700 



2,000 



2,120 



25 



675 



6.9 



46 



175 



8,400 



3,600 



2,730 



30 



510 



7.9 



51 



188 



11,200 



5,300 



3,350 



35 



410 



8.8 



55 



198 



14,000 



7,100 



3,950 



40 



340 



9.6 



59 



205 



17,100 



8,900 



4,570 



45 



280 



10.4 



63 



211 



20,300 



10,900 



5,200 



50 



235 



11.2 



66 



215 



23,700 



12,800 



5,840 



55 



200 



11.9 



69 



218 



27,000 



14,500 



6,450 



60 



165 



12.7 



72 



220 



30,100 



16,200 



7,020 



65 



140 



13.4 



74 



222 



33,200 



17,700 



7,570 



70 



120 



14.1 



77 



224 



36, 100 



19,300 



8,100 



75 



100 



14.7 



79 



226 



38,800 



20,800 



8,600 



80 



90 



15.3 



81 



227 



41,500 



22,400 



9,110 



QUALITY H. 



20 



1,635 



4.6 



33 



129 



3,200 



300 



1,380 



25 



1,095 



5.6 



38 



145 



5,200 



1,700 



1,840 



30 



765 



6.5 



43 



156 



7,300 



3,200 



2,330 



35 



600 



7.3 



47 



165 



9,400 



4,700 



2.820 



40 



500 



8.0 



50 



172 



11,700 



6,300 



3,320 



45 



420 



8.7 



54 



176 



14,300 



7,900 



3,830 



50 



355 



9.4 



57 



179 



17,000 



9,500 



4,360 



55 



310 



10.0 



59 



182 



19,700 



11,000 



4,880 



60 



270 



10.6 



62 



183 



22,400 



12,500 



5,360 



65 



230 



11.3 



64 



185 



25,200 



13,900 



5,830 



70 



205 



11.8 



66 



186 



27,800 



15,300 



6,280 



75 



180 



12.4 



69 



187 



30,400 



16,700 



6,730 



80 



155 



13.0 



71 



188 



32,900 



18,100 



7,160 



QUALITY in. 



20 

 25 

 30 



2,450 

 1,880 

 1,405 



3.4 

 4.2 

 5.0 



26 

 31 

 35 



100 

 114 

 125 



700 

 2,100 

 3,400 





650 



930 



1,290 





1,100 



35 



1,045 



5.7 



39 



133 



4,800 



2,300 



1,670 



40 



795 



6.4 



42 



138 



6,500 



3,600 



2,070 



45 



655 



7.0 



45 



142 



8,300 



4,900 



2,470 



50 



550 



7.6 



47 



144 



10,300 



6,200 



2,880 



55 



475 



8.2 



50 



145 



12,400 



7,500 



3,300 



60 



420 



8.7 



52 



146 



14,700 



8,800 



3,700 



65 



370 



9.2 



54 



147 



17, 100 



10,100 



4,100 



70 



330 



9.7 



56 



148 



19,600 



11,400 



4,490 



75 



295 



10.2 



58 



149 



22,000 



12,600 



4,860 



80 



270 



10.6 



60 



149 



24,200 



13,900 



5,230 



1 Based on 80 sample plots in fully stocked stands; total area 21.0 acres. Saw timber scaled to 5.5 inches 

 in top diameter inside bark. Stump height 1 to 1 .5 feet. Volume of stem both in board feet and cubic feet, 

 is from 1-foot stump to 6-inch top diameter, including bark. All trees 6 inches and over in diameter breast- 

 high were scaled. 



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

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



