122 SILVICULTURE METHODS OF ARTIFICIAL REPRODUCTION 



these conditions, notably in the South, is a dibble or planting bar. 

 By such methods, two or three times as many trees may be planted 

 per man per day as with the mattock. 



Recently the Syracuse forestry plow as developed by Heiberg has 

 been successfully used in the East where the planting site, usually 

 submarginal land, is free of large rocks, logs, or stumps. The plow 

 clears and cultivates a strip in which planting and direct seeding are 



FIG. 63. A series of seven, two-man planting crews reforesting submarginal land 

 under the direction of a planting foreman. One man makes the hole with a 

 mattock, and the other plants the little tree. Under favorable conditions, such 

 as shown in this picture, 2 men can readily plant from 1000 to 1200 trees or 

 more per crew in an 8-hour day. 



extremely simple and easy, weed competition is reduced, and moisture 

 conditions are more favorable. The cost of planting an acre includ- 

 ing plants and planting is usually from $5 to $10 per acre, and 

 somewhat lower when the plow method is used. 



The following table illustrates recommended spacing for forest 

 trees used in general field planting as well as in gullies and eroded 

 areas. These species are largely used in the South, the Southeast, and 

 the lower Central States, depending upon climatic and other local 

 conditions. Some, as longleaf pine, are used only in the warmest por- 

 tions of the South. 



