THE ASHES : THEIR CHARACTERISTICS AND MANAGEMENT. 



33 



Table 15 is the result of tabulating the yields per acre of 63 sample 

 plots in comparatively pure, even-aged stands of ash, half in natural 

 and half in planted stands, from 5 to 75 years old, and drawing three 

 curves to represent high but not the highest (Quality I), average 

 (Quality II), and low (Quality III) yields. The stands represented 

 were mostly on average - quality ash sites. Practically all were 

 unthinned stands, and the yields may be considered as representing 

 conservatively the possibilities of well-stocked ash stands under 

 management on fair to good sites. 



Table 15. — Yield of pure,. even-aged, well-stocked stands of ash on different quality sites. 1 



QUALITY I. 









Yield per acre 







Number 

 of trees 



Average 

 diameter 











Age. 



per acre 



breasthigh 



Scribner Decimal C 







3" and 

 over. 



3" and 

 over. 





Cords. 













7" and over. 



3" and over. 





Years. 



Number. 



Inches. 



Board feet. 



Cubicfeet. 





20 



427 



5.4 



2,000 



2,200 



24.4 



25 



391 



6.5 



4,200 



3,100 



34.4 



30 



375 



7.5 



6, 500 



3,900 



43.3 



35 



361 



8.3 



9,000 



4,600 



51.1 



40 



341 



9.1 



11, 700 



5,250 



58.3 



45 



322 



9.9 



14, 700 



5,830 



64.8 



50 



288 



10.5 



18,000 



6,350 



70.6 



55 



251 



11.2 



21, 700 



6,800 



75.6 



60 



224 



11.8 



25, 700 



7,220 



80.2 



65 



203 



12.4 



29, 500 



7,600 



84.4 



70 



188 



13.0 



32,800 



7,950 



88.3 



75 



176 



13.5 



35, 600 



8,280 



92.0 



80 



166 



14.0 



38,000 



8,600 



95.6 



QUALITY II. 



20 



482 



4.0 





850 



9.4 



25 



435 



5.0 



1,000 



1,680 



18.7 



30 



415 



5.8 



2,200 



2,400 



26.7 



35 



393 



6.6 



3,600 



3,050 



33.9 



40 



378 



7.4 



5,300 



3,630 



40.3 



45 



367 



8.0 



7,500 



4,130 



45.9 



50 



361 



8.7 



9,900 



4,590 



51.0 



55 



350 



9.3 



12, 700 



5,000 



55.6 



60 



340 



9.8 



15, 700 



5,380 



59.8 



65 



326 



10.4 



19,100 



5,720 



66.8 



70 



309 



10.9 



22, 600 



6,010 



66.8 



75 



288 



11.5 



25,500 



6,270 



69.7 



80 



268 



12.0 



28, 000 



6,520 



72.4 



QUALITY III. 



25 



469 



3.5 





470 



5.2 



30 

 35 



456 

 452 



4.2 

 4.9 





970 

 1,470 



10.8 

 16.3 



300 



40 



426 



5.5 



1,300 



1,950 



21.7 



45 



410 



6.2 



2,400 



2,400 



26.7 



50 



402 



6.8 



3,900 



2,790 



31.0 



55 



392 



7.3 



5,600 



3,150 



35.0 



60 



382 



7.9 



7,700 



3,470 



38.6 



65 



377 



8.4 



10,200 



3,760 



41.8 



70 



371 



8.9 



12, 900 



4,020 



44.7 



75 



365 



9.3 



15,700 



4,260 



47.3 



80 



359 



9.8 



18,000 



4,490 



49.9 



1 Based on 18 plots, Quality I, 30 plots, Quality II; 14 plots, 

 Quality III, with a total area of 16.9 acres. 



6023°— Bull. 299—15- 



