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1 results

  • A Pneumatic Spreader for Applying Herbicide Granules and Herbicide-Fertilizer Mixtures to Field Plots

  • John W. Albright, R. Gordon Harvey
  • Journal:
    Weed Technology / Volume 11 / Issue 3 / September 1997
    Published online by Cambridge University Press:
    12 June 2017, pp. 614-617

  • A small -plot, pneumatic applicator was developed to apply either granular herbicide formulations or liquid herbicides impregnated on commercial dry fertilizer to field research plots. Pre-weighed herbicide samples poured into a stainless steel, motor-driven belt, cone seeder are automatically sput into four subsamples in a four-outlet rota seed distributor run by a 12-volt electric motor, and delivered to four plastic venturi chambers. A gasoline engine-powered leaf blower forces air through a 10-cm diam polyvinylchloride (PVC) pipe to the input sides of the venturi chambers. The forced air stream carries the herbicide samples through 2.5-cm diam flexible plastic tubing to four deflector shields mounted 61 cm apart on a fiberglass boom. The applicator uniformly delivers granules up to 400 kg/ha in a 2.5-m wide swath.