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ably the amount of spray oatd on f any one tree. The* moat efficient •concentration a have been between } two end'eight times. :
Moat inaecticidec • and fungi* a tides can be used in concentrate, form. With some, each as parathion, the gsower must take additional precautions because of the highly poisonous natureof the . chemical. * *
The spray machine must be designed so concentrate sprays can be used in it. The machine incorporates an air blast with water as a carrier. Some machines can* be converted for concentrate spraying, with a spray attachment head.
Dreiling says it has been cOm
44.2%