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The company, in its fourth year of spraying, treated about 8,000 acres last year, Mr. LeMarr said. The operation is self-contained, with the helicopter supported by a truck which carries tanks containing aviation fuel, water and a third tank to mix the pesticide spray. Mr. LeMarr’s mechanic doubles as the truck’s driver, so minor mechanical problems can be attended to in the field.
The Hiller 12-E helicopter, fitted with spray booms extending about 10 feet out on each side of the craft, carries 55 gallons of spray, the legal limit, on each run. Mr. LeMarr said the concentration of Dimilin sprayed is minute, requiring two. ounces of the pesticide mixed with three quarts of water on each acre. Dimilin’s half-life, once sprayed, is five to seven days.
The chopper can spray an acre in about six seconds, not counting turns at the end of each pass, he added.
The cost of spraying varies greatly depending on the amount of acreage involved. Obviously, he explained, the larger the block the more efficient the operation is, and the lower the cost per acre.
At the high end of the scale, spraying an isolated block of from one to 10 acres would cost about $450, while if several neighbors get together and arrange for a large block to be sprayed at one time, the cost may drop as low as $11 per acre, Mr. LeMarr sale!.
But the cost may be a moot point for those who have not already made arrangements to spray, he added. Unless the property is next to a block already scheduled for treatment, there’s slim chance that his company has time available. For those latecomers, he suggested, callv ing early next year may be their only recourse.
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