Planting in Squares 



207 



writes as follows on the subject (Okla. Exp. Sta. Circ. No. 20): 

 "From the standpoint of the number of trees contained on an acre 

 we find: That planted by the square system, with trees 25 feet apart, 

 an acre will contain sixty-four trees. This leaves, however, about 

 16 M feet around the sides between the last row of trees and the out- 

 side line, instead of 12 J^, as would be intended. When the acre is 

 planted by the triangular or hexagonal system it will be found to 



Fig. 65. Twenty-five trees planted accord: 

 • lines indicate feeding-area assi 



,ng to square system. Dotted 

 igned to each tree. 



contain sixty-seven trees. Here again, however, in planting the 

 single acre, the trees do not fit the plat, and there is a margin left 

 over on two of the sides of 165^ feet, instead of 12J^. It is difiieult to 

 say how many trees may be planted on an acre by the quincunx 

 system on account of the difference of meaning as to what is intended. 

 Usually in comparing this system with others they are compared 

 with the trees the same distance apart in the rows. This is not a 

 fair comparison, however, for when trees are planted by this 

 system the nearest tree to any given tree is not the next tree down 

 the row, but the next tree diagonally across. Taking it in the sense 

 in which it is generally used, an acre of land planted according to 



