Establishing the Apple Orchard 



149 



tervals in this' line, it will be possible to establish the 

 position of the trees in this first row. By establishing 

 another line at right angles to the first, it will be possible 

 with the use of stakes to sight across and establish par- 

 allel lines which will serve as guides in lining up the rows. 

 It is usually advisable to set a stake at the place for each 

 tree. Then after sighting across from the base lines, 

 it will be possible to determine the stakes which are not in 

 alignment. Figure 2 shows the three important systems 

 for laying out commercial plantings. Table VIII indi- 

 cates the number of trees to the acre under different plant- 

 ing distances and systems. 



Table VIII. — Number of Trees to the Acre 



Distance Apart 

 16x16 

 18x18 

 20x20 

 22x22 

 24x24 

 25x25 

 26x26 

 28x28 

 30x30 

 32x32 

 33x33 

 35x35 

 36x36 

 40x40 

 45x45 



Square 

 170 

 134 

 10S 

 90 

 76 

 70 

 64 

 56 

 48 

 43 

 40 

 35 

 34 

 27 

 22 



Hexagonal system. 



The use of a wire triangle is recommended for planting 

 trees under the hexagonal system. Each side of the tri- 

 angle should represent the distance between the permanent 

 trees. The wires should be connected at each angle by 

 means of rings. The triangle is then carried about by 



