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Download RAW file: https://library.csbe-scgab.ca/docs/journal/39/39_4_281_raw.pdf
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Description: Air-assist, where a stream of high-velocity air is directed over or close to the spray emitted from a nozzle, is used to improve deposition efficiency and to reduce spray drift with agricultural sprayers. Forestry industries are concerned with the same issues. This study was initiated to investigate air-assist as a means of improving spray penetration and deposition from a boom sprayer while reducing drift potential in a canopy of wild red raspberry plants (Ruhus idaeus L.), a weed common in Ontario forest regeneration sites. A small air-assist boom sprayer was built and two sets of experiments were conducted, one in a walk-in wind tunnel and the other at a field site. Two air-assist configurations were used: direct-assist and air-curtain. Results showed that both configurations increased spray penetration, providing improved spray deposition on targets located within the canopy. Air-assist also reduced the potential for drift under windy conditions. However, the air-curtain configuration was not effective in a crosswind situation.

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Citation: M. Darvishvand and R.B. Brown 1997. PERFORMANCE OF AN AIR-ASSIST FORESTRY BOOM SPRAYER. Canadian Agricultural Engineering 39(4):281-287.
Volume: 39
Issue: 4
Pages -
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Date: 1997
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Type: Text.Article
Format: PDF
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Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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