SPRAY BAFFLE FOR CONTROL OF WHITE PINE WEEVIL
WITH A GARDEN SPRAYER


A spray baffle can be made for attachment to the nozzle of a garden sprayer to improve spray coverage on leaders of host trees for control of white pine weevil*. The baffle is fashioned from a No. 2 1/2 tin can as shown above. The ends of the can are removed, and the can is cut down the side. A hole is punched in the side opposite the cut, large enough to fit the bushing between the nozzle tip and the nozzle body. To install the spray baffle, place the nozzle tip inside the baffle and insert the nozzle body from outside and screw on tight.

A 4-foot rod with 3 1/2 feet of hose attached is recommended for spraying all trees up to 10 feet. Rods can be lengthened by adding 2-foot sections available from spray equipment manufacturers. Inexpensive 1/4-inch aluminum tubing and standard 1/4-inch fittings may also be used to make spray rods of any desired length. Bamboo or similar light-weight support material should be bound to the tubing for rigidity.

* See Forest Pest Sheet on white pine weevil, Pissodes strobi, for detailed life history and control information.

MAINE DEPARTMENT OF AGRICULTURE, CONSERVATION AND FORESTRY
Maine Forest Service - Forest Health and Monitoring Division
April 2000

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