476 



STATE BOARD OF AGRICULTURE. 



of white pine. The white pine can be grown closer together than the 

 larch and while an individual tree in the open does not grow so fast the 

 plantation will produce more timber to the acre. 



The following table gives the diameter and height of the average tree 

 and the diameter of the maximum tree for a few existing plantations 

 in the southern part oi the State and the yield in timber is given in 

 cubic feet, A standard cord of wood contains 128 cubic feet of space 

 of which, in a stacked cord, about 30 per cent is air space between the 

 sticks, so that an average standard cord contains about 90 cubic 

 feet of solid wood. 



Species. 



White pine 



White pine 



White pine 



White pine 



Norway spruce. . . 

 Mixed hardwoods 



*Chestnut 



♦Chestnut 



*Chestnut 



Catalpa 



Catalpa 



Catalpa 



Black locust 



Honey locust. . . . 

 Black walnut . . . . 

 Carolina poplar. . 

 White ash 



Age, 

 years. 



8 

 12 

 18 

 24 

 20 

 42 

 12 

 37 

 45 

 11 

 12 

 2.5 

 10 

 23 

 23 



9 

 10 



Number 

 of trees 

 per acre. 



500 

 600 

 680 

 416 



1,120 



162 



100 



67 



51 



1,280 

 834 

 100 

 620 

 260 

 524 

 700 



2,800 



Diameter 

 average 



tree, 

 inches. 



1.3 

 2.2 

 6.0 

 8.2 

 5.0 

 9.0 

 4.0 

 14.4 

 19.9 

 3.1 

 4.0 

 10.0 

 3.0 

 5.0 

 3.0 

 3.5 

 1.0 



Height 



average 



tree, 



feet. 



9 

 15 

 28 

 42 

 24 

 50 

 20 

 65 

 65 

 23 

 24 

 45 

 16 

 40 

 20 

 28 

 12 



Yield 



per acre, 



cubic 



feet. 



300 



1,600 



2,580 



1,456 



2,264 



78 



2,100 



2,700 



760 



850 1 



810 



173 



6.50 



260 



700 



♦Planted with wide spacing for nut production. 

 {About 80 fence posts having already been taken out. 



Figures of the yield per acre of some plantations in other states are 

 given below. These data have been compiled from various Government 

 and State reports. 



Scotch pine and larch. New York, 25 years old, 13,000 board feet per acre. 

 Scotch pine, New York, 35 years old, 27,000 board feet per acre. 

 Silver maple, Illinois, 9 years old, 16.2 cords per acre. 

 Silver maple, Iowa, 20 years old, 20.1 cords per acre. 

 Black walnut, Indiana, 12 years old, 7.5 cords per acre. 

 Black walnut, Illinois, 38 years old, 33.8 cords per acre. 

 White pine, Iowa, 21 years old, 4,760 board feet per acre. 

 White pine. New York, 28 years old, 24,000 board feet per acre. 

 White pine, Massachusetts, 38 years old, 29,000 board feet per acre. 

 White pine, Massachusetts, 43 years old, 37,710 board feet per acre. 

 White pine, Massachusetts, 55 years old, 43,796 board feet per acre. 

 Norway spruce, New York, 22 years old, 10,000 board feet per acre. 



