20 



Table 9. — Estimated yield for second-f/roiciJt, hardwoods. Steicart and Decatur 



eo unties, Tenn.C' 











Average annual 





Average 



Yield per acre. 



production 

 within each ten- 



Age. 



trees 

 per acre. 







year period. 



Ridge. 



Slope. 



Ridge. 



Slope. 



Years. 



Nuviber. 



Cu. ft. 



Cu. ft. 



Cu. ft. 



Cu.ft. 



10 



1,340 



740 



560 



74.0 



56.0 



20 



960 



1,355 



1,200 



61.5 



64.0 



30 



700 



1,715 



1,700 



36.0 



50.0 



40 



500 



1,945 



2,015 



23.0 



31.5 



50 



355 



2,105 



2, 215 



16.0 



20.0 



60 



255 



2, 200 



2,340 



9.5 



12. 5 



70 



180 





2.440 





10.0 



._ 80 



140 



















" The second growth in this region consists mainly of oak, \Yith the white oaks and hlack 

 oaks in almost equal quantities. 



Table 10. — Yield in luiiihe)-, in irood, and in ties per acre for ridge and slope 



land. 



Age. 



Lumber (Doyle- 



Wood. 







Average annual increment 

 within each decade. 



Average an- 

 nual produc- 

 tion per acre. 



Scribner). 





Lumber 



(Doyle-Scrib- 



ner). 



Wood. 



Ties. 



Ridge. 



Slope". 



Ridge. 



Slope. 



Ridge. 



Slope. 



Ridge. 



Slope. 



Ridge. 



Slope. 



Ridge. 



Slope. 



Yrs. 

 10 

 20 

 30 

 40 

 50 

 60 

 70 



Bd.ft. 



Bd.ft. 



Corrls. 

 8.6 

 15.8 

 20.0 

 22.7 

 24.6 

 25.7 



Cords. 

 6.6 

 14.0 

 19.8 

 23. 5 

 25.6 

 27.3 

 28.5 



No. 



Ko. 



Bd.ft. 



Bd.ft. 



Cords. 

 0.86 

 .72 

 .42 

 .27 

 .19 

 .11 



Cords. 

 0.66 

 .74 

 .08 

 .37 

 .21 

 .17 

 .12 



No. 

 3.3 



No. 

 3.5 











. 



220 



660 



1,520 



2,780 



330 



885 



1,795 



3,200 















44.0 



86.0 



126. 



55. 5 

 91.0 

 140. 5 



""266' 



""•213' 

 222 





1 







1 1 







These figures apply to present forest conditions in the region and 

 can be used to determine the amounts of timber, in the form of ties, 

 cords, or board feet, which can be expected from the ridge and slope 

 lands under sprout management. 



The study of sprout forests, then, allows the following conclusions 

 to be drawn Avith regard to their management : 



(1) The species best suited to sprout management are chestnut and 

 the oaks, 



(2) Only the ridges and the upper slopes are suitable for sprout 

 forest. 



(3) The sprout forest should be managed Avith the aim of pro- 

 ducing only timber for cross-ties, for mining purposes, extract, char- 

 coal, and other minor products, 



(4) The intervals at which the sprout forest should be cut must 

 depend largely upon the product desired ; for ties and mining props 

 it will require from fifty to sixty years; for charcoal from thirty to 

 forty years. 



[Cir. 118.] 



