16 FORESTRY WORK 



These paths will be each 200 feet long (approx.). Their 

 total width will be 32 feet, making an area of 6,400 

 square feet to be deducted from the acre, leaving 37,160 

 square feet — say, 37,000 square feet. 



If the plants are placed at intervals of 3 inches in lines 

 12 inches apart, each plant occupies 36 square inches 

 of growing space, equal to a ^ square foot, or 4 plants 

 per square foot. 



37,000 X 4 = 148,000, the number of plants per acre. 



If the lines are only 9 inches apart, each plant will 

 occupy 27 square inches of space — 5| plants per square 

 foot, or approximately 197,000 plants per acre. Another 

 way to arrive at the number of plants is to count the 

 lines on each bed or break. 



The latter will be about 192 feet long, and with lines 

 1 foot apart there will be 190 lines. Each line will be 

 68 feet long, and the number of plants 4 to each foot of 

 length — say, 250 plants in each line. 250 x 190 x 8 (the 

 number of beds) =142,500, which is a better estimate 

 *ihan the former one, as it allows for the spaces left between 

 the plants and the edges of the bed. 



Allowing for 10 per cent, of culls or badly shaped 

 plants, this leaves approximately 128,000 trees fit to 

 plant out. 



If the trees are to be planted at 3| feet apart each way — 

 i.e., about 3,600 plants per acre — there are enough plants 

 for 35| acres. 



A certain percentage of the plants, however, must be 

 reserved for beating up — i.e., replacing plants that have 

 died in the plantation from drought, frost, etc. An 



