A Boat-mounted Spray Boom for Deepwater Rice

Abstract
To overcome the difficulties of applying pesticides in flooded rice, a light-weight spray boom was designed and built for use with a local type of boat. The 5 m long boom is equipped with 4 Micron rotary atomizers powered by a 12 V car battery and can spray a 4 m swath on 1 side of the boat. The major pest in Bangladesh ricefields is the stem borer, Tryporyza incertulas. Field trials using this equipment to spray diazinon showed a reduction in stem borer infestation and an increase in yield.

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