76 



SOUTHERN HARDWOODS 



YIELD PER ACRE — SOUTHERN HARDWOODS 

 U. S. Forest Service Data 



Scrub pine, Maryland 



Yellow poplar, Virginia. . . 

 Yellow poplar, Tennessee. 



Hickory 



Red cedar 



Quality i site, pure, even aged stands 



25 years 



cubic feet 



2510 



3425 

 2000 



75 



so years 



cubic feet 

 4650 

 54SO 

 4000 

 500 

 1500 



75 years 



cubic feet 



92s 

 2400 



100 years 



cubic feet 



1300 



These figures are unsatisfactory at best because they do not 

 differentiate between the types, cove, slope and ridge. Unfor- 

 tunately, there are no really satisfactory yield data in existence. 

 However, as a guess, using the meagre information available, the 

 average annual growth conditions in even aged stands is esti- 

 mated to be: 



Cubic feet 



Cove SO 



Slope , 30 



Ridge 10 



Or in other words it is unreasonable to expect in a rotation of 

 100 years more than the following amounts unless the stands are 

 thinned intensively: 



Cubic feet Board feet 



Cove 5000 30,000 



Slope 3000 18,000 



Ridge 1000 6,000 



And even these figures could not be realized unless there was 

 complete stocking and thoro fire protection. 



Timber Valuation. — It is difficult to generalize in regard to the 

 methods of estimating; There are so many variable factors. In 

 the first place the size of the tracts differs greatly in the different 

 regions. In the southern Appalachians they tend to be large 

 because there are few farms to cut them up, but even there there 

 is no uniformity. The grant system of selling land has led to the 

 setting aside of small holdings of less than 100 years in between 



