AFTER CARE — FERTILIZERS 59 



less than that of any other irrigation system, 

 which might be considered. The cost of a 

 field equipment varies with each particular 

 installation, ranging from ^90 to ^150 per 

 acre; however, the usual cost for this equip- 

 ment lies between ^100 and ^125 per acre. 

 This figure does not include the pumping 

 plant, the cost of which, together with the 

 cost of the mains leading to the field, should 

 be added. 



The investment is permanent, and the life 

 of the system is limited only by the life of the 

 pipe used to conduct the water. Owing to 

 the fact that this system can be operated 

 with less pressure and with less water waste 

 than any other known system of this form of 

 irrigation^ the cost of installing a pumping 

 plant is reduced to a minimum. It may be 

 added also that fertilizers and fungicides in 

 solution may also be distributed through 

 these pipes under certain circumstances. 



