SHORTLEAF PINE : IMPORTANCE AND MANAGEMENT. 



31 



Table 16. — Yield 1 per acre of fully stocked second-growth sJwrtleaf pine in 



Arkansas. 



QUALITY I. 



Age. 



Trees, 

 total 

 per 

 acre. 



Basal 



area 

 (breast- 

 height), 



total 

 per acre. 



Average 

 diameter 



trees 



6 inches 



and 



over. 



Height. 



Saw timber. 



Solid 

 measure . 



Scribner 

 rule. 



Do vie 

 rule. 



Years. 

 20 

 25 

 30 

 35 

 40 

 45 

 50 

 55 

 60 

 65 

 70 

 75 

 80 



Number. 

 639 

 473 

 380 

 316 

 276 

 245 

 220 

 201 

 186 

 174 

 164 

 155 

 147 



Sq.ft. 

 166 

 182 

 195 

 205 

 213 

 219 

 225 

 230 

 234 

 237 

 240 

 242 

 243 



Inches. 

 7.5 

 8.6 

 9.6 

 10.6 

 11.4 

 12.2 

 13.0 

 13.6 

 14.2 

 14.8 

 15.3 

 15.8 

 16.2 



Feet. 

 43 

 50 

 55 

 60 

 65 

 69 

 73 

 76 

 79 

 81 

 84 

 86 

 88 



Bd.ft. 

 8,000 

 12, 700 

 17,500 

 22, 400 

 27,500 

 32, 500 

 37,400 

 42,200 

 46,850 

 51,350 

 55, 750 



Bd.ft. 



en. ft. 



2,500 

 3,630 

 4,900 

 6,060 

 7,010 

 7,730 

 8,320 

 8,850 

 9,320 

 9,760 

 10, 160 

 10,520 

 10, 850 



4,200 

 6,600 

 9,700 

 13, 400 

 17, 600 

 21, 800 

 25,600 

 29,000 

 32, 100 

 35,000 

 37,800 

 40,500 







QUALITY II. 



20 



1,130 



125 



6.6 



35 



4,350 

 7,450 





1,740 



25 



784 



139 



7.5 



41 



2,700 



2,520 



30 



595 



150 



8.3 



46 



10, 600 



4,500 



3,390 



35 



479 



159 



9.1 



51 



13, 800 



6,800 



4,220 



40 



404 



167 



9.9 



55 



17, 000 



9,500 



4,930 



45 



351 



173 



10.7 



58 



20, 200 



12, 400 



5,520 



50 



308 



178 



11.3 



61 



23, 450 



15, 400 



6,050 



55 



277 



183 



12.0 



64 



26, 850 



18, 200 



6,520 



60 



249 



186 



12.5 



67 



30, 600 



20, 600 



6,980 



65 



229 



189 



13.1 



69 



34,050 



23,000 



7,410 



70 



214 



191 



13.6 



72 



37,500 



25,200 



7,800 



75 



197 



193 



14.1 



74 



40, 850 



27, 400 



8,160 



80 



184 



194 



14.5 



76 



44,000 



29,500 



8,500 



QUALITY III. 



20 

 25 



1,510 

 1,088 















95 



6.3 



33 



2,600 



1,200 



1,390 



30 



802 



105 



7.0 



37 



4,300 



2,500 



1,870 



35 



638 



113 



7.7 



41 



6,000 



3,900 



2,360 



40 



521 



120 



8.4 



44 



7,900 



5,500 



2,850 



45 



446 



126 



9.1 



47 



10, 000 



7,200 



3,310 



50 



385 



131 



9.7 



50 



12, 200 



9,000 



3,760 



55 



343 



135 



10.3 



53 



14,600 



10, 700 



4,210 



60 



312 



138 



10.8 



55 



17, 000 



12, 300 



4,650 



65 



284 



140 



11.4 



57 



19, 500 



13,900 



5,070 



70 



260 



142 



11.9 



59 



22,000 



15, 400 



5, 450 



75 



242 



143 



12.4 



61 



24,000 



16, 900 



5,810 



80 



225 



143 



12.9 



63 



27, 100 



18,400 



6,150 



1 Based on 38 fully stocked sample plots; area 5.8 acres. All trees inches and over in diameter breast- 

 high were scaled: Top diameter, 5.5 indies; si iimp height, 1 foot. Tablo is only preliminary, based upon 

 Insufficient measurements but used here for comparison until more complete data are available. 



