. 



LOBLOLLY OB NORTH CAROLINA PINE. 



trees in tin- stand but tlu-ir individual growth should have equaled that 

 of the predominant tnt-s. Careful incasiiivmrnts have been made to 

 deUrmiiir tin- an -a of the iiitiniuin crown space required for the growth 



i.iiiiinani tr.t-s of different diameters (at different ages) on different 

 qualitv sites. Table 78 give.s the crown space of dominant trees and 

 the between trees, while in Table 79 is given the number of 



b tnvs of different diameters which would occupy an acre without 

 retarding accretion. 



TABLE 7*. CBOWW SPACE. DISTANCE BETWEEN TREES AND INDEX OF TOLERANCE OP DOMINANT 

 TftBE* Or LOBLOLLT PlNE OT DIFFERENT DIAMETERS ON DIFFERENT QUALITY SlTEB. 



The trees which enter into the crown cover can be so thinned as to 

 give each tree the optimum crown space required for that diameter : if 

 the crown space is less than the optimum (Plate XXVII), although 

 there are more trees per acre, the accretion of the individual tree is 

 retarded; if it exceeds the optimum the stand is understocked. (Plate 

 VI. A., 



Table 79, to show yield of thinned stand and yield of thinnings, gives 

 the average diameter of the predominant trees in stands of different 

 ages on different quality sites; the number of guch trees which could 

 occupy an acre as determined by the areas of their crown spaces; the 

 total yield of such stands, and the yield of the trees removed in thin- 

 ning ; the full value of the entire stand at different ages, and the value of 



