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What about upwind buffer zones for aerial applications?

L W Kirk1, M E Teske, H W Thistle

  • 1Southern Plains Agricultural Research Center, USDA Agricultural Research Service, College Station, Texas 77845-4966, USA. i-kirk@tamu.edu

Journal of Agricultural Safety and Health
|October 5, 2002
PubMed
Summary

Upwind buffer zones are generally not needed for aerial pesticide applications. Scientific literature and the AgDRIFT model indicate that spray drift does not necessitate buffer zones on the upwind side of spray areas.

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Area of Science:

  • Agricultural science
  • Environmental science
  • Pesticide application technology

Background:

  • Buffer zones are established adjacent to pesticide-sprayed areas to mitigate consequences of spray drift.
  • There is a prevailing suggestion that buffer zones should completely encircle areas designated for pesticide spraying.

Purpose of the Study:

  • To evaluate the necessity of upwind buffer zones for aerial pesticide applications.
  • To assess the significance of upwind spray drift based on existing scientific literature and a mechanistic model.

Main Methods:

  • Comprehensive review of the scientific literature concerning spray drift and buffer zones.
  • Utilization of the AgDRIFT mechanistic model to simulate and analyze spray drift patterns.

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Main Results:

  • The scientific literature does not provide evidence supporting the need for upwind buffer zones.
  • The AgDRIFT model simulations indicate that upwind spray drift is not a significant concern for typical aerial applications.

Conclusions:

  • Upwind buffer zones are not required for standard aerial pesticide applications.
  • Current scientific understanding and modeling do not support the implementation of buffer zones on the upwind side of spray areas.