66 SOWING AND PLANTING IN THE FOREST 



or line planting, may be found as follows : Divide 43,560 (the 

 number of square feet in an acre) by the product obtained by 

 multiplying the distance between the lines by the distance 

 between the plants in the lines, and multiply the result by the 

 number of acres. Thus if 10 acres are to be planted at 

 4 feet by 4 feet the number of plants required is : 



43> ^ x 10 = 27,220. 

 4x4 



The number of plants required per acre for planting at 

 different distances apart in square and triangle planting is as 

 follows : 



The distance between the lines in triangle planting is as 

 follows : 



