156 LOBLOLLY OR NORTH CAROLINA PINE. 



however, takes place only during the drier seasons, consequently there 

 is no assurance that they will form a large part of the stand. Their 

 yield and value is so much greater than that of the gum and water ash 

 with which they are associated that management should look to eradi- 

 cating or reducing these species and supplanting them with cypress and 

 pine. 



(6) Loblolly Pine With Pocoson Pine on Stii-anitas. 



The open stands of this type, which consists of scattered trees, require 

 that the density be increased in order to utilize fully the soil. (Plate 

 V, A.) Where the stands are open and the age classes are very irregular, 

 selection, cutting (culling) must continue at present. The diameter for 

 cutting should be controlled as indicated in selection cutting in open 

 stands in Qualities II and III. Old even-aged groups should be cut 

 clean, leaving seed trees. There are numerous, though scattered, even- 

 aged groups of young trees, and with these as nuclei a group selection 

 form of forest should be developed. If the cutting interval is 20 years, 

 these can eventually be merged into definite even-aged blocks, the age 

 interval between them being 20 to 30 years. As these even-aged blocks 

 mature they should be cut clean, the immature blocks being thinned 

 during each cutting. 



It is necessary to destroy moss during dry seasons since its accumula- 

 tion retards aeration and renders the soil more acid, thus rendering it 

 less suitable for loblolly pine which has no visible mycorrhiza on its 

 roots. It 'also prevents the establishment of loblolly pine seedlings on 

 thick carpets of living sphagnum or on its raw humus, although the 

 pocoson pine can establish itself. Likewise the heavy sod of grasses and 

 herbaceous plants materially interferes at times with the establishment 

 of seedlings, although the presence of water on these lands during the 

 spring germinating, period tends to limit their occupancy by loblolly 

 pine. The mixture on these sites should consist of longleaf, pocoson, and 

 loblolly pines. These lands are capable of yielding from 300 to 350 

 board feet a year in a rotation of 60 to 80 years, with cutting intervals 

 of 20 to 25 years. At present the annual yield is less than 200 feet. 



(7) Loblolly Pine With Shortleaf Pine and Hardwoods on Uplands. 



The forests of this type should be managed as selection, preferably as 

 group selection stands. (Plate VII.) The loblolly pine should be cut 

 when it is about 16 inches in diameter breasthigh and when not more 

 than 70 years old. The trees will yield about 3 logs, the average log 

 scaling about 55 feet. Although Icblolly pine makes more rapid growth 

 than shortleaf in this type it is not so desirable a tree as the latter on 

 account of its coarse, knotty wood, except on lower slope?, where the 

 moist soils are suited to its growth. The ideal mixture which should be 



