8 



BULLETIN 1061, U. S. DEPARTMENT OF AGRICULTURE. 



in diameter than those of similar age growing in the open. Like- 

 wise, at relatively early ages — at 30 years for example — an acre that 

 was half stocked might have trees of saw-timber size, whereas a fully 

 stocked stand might not have any trees of merchantable saw-timber 



sizes. 



AGE 

 YEARS 



- GROWTH UPTO JUNE 22 



BRANCHES (2) (Spring) 

 RESERVE BUD (Late Summer) 



MID-SEASONAL NODE 



MID-SEASONAL NODE 



— BRANCHES (2) (Spring) 



BRANCH (Spring) 



BRANCH FROM RESERVE BUD 



Fig. 2. — Natural growth of longleaf pine for the past 4 seasons under fire protection ; 

 nearly 8 feet tall in 9J years. Photographed in June during period of rapid upward 

 growth. (Jasper County,. S. C.) 



Table 1 shows, for different ages, the average height and diameter 

 of longleaf pine trees growing in well-stocked, even-aged stands, on 

 three different grades of land or situations. These figures, it is be- 

 lieved, are approximately representative of the rate of growth in 

 stands of good density over the range of longleaf pine. They are 

 based upon the measurement of selected portions of 78 longleaf pine 

 stands whose locations range from South Carolina to Texas. 



