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Interception of spray drift by border structures. Part 2: field experiments.

M De Schampheleire1, D Nuyttens, D Dekeyser

  • 1Ghent University, Laboratory of Crop Protection Chemistry Coupure Links 653, BE-9000 Gent, Belgium. Mieke.Deschampheleire@UGent.be

Communications in Agricultural and Applied Biological Sciences
|February 21, 2009
PubMed
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Artificial screens and natural hedges can reduce spray drift from agricultural field sprayers. A 1.5m artificial screen with 16% open area provided the highest drift reduction in grassland experiments.

Area of Science:

  • Agricultural Engineering
  • Environmental Science
  • Agronomy

Background:

  • Spray drift from field crop sprayers poses environmental risks.
  • Drift mitigation measures are crucial for sustainable agriculture.
  • Existing measures do not fully incorporate border structures like screens and hedges.

Purpose of the Study:

  • To evaluate the efficacy of artificial screens and natural hedges as drift-intercepting structures.
  • To determine the impact of screen height and open area on spray drift reduction.
  • To assess the potential of these structures as part of drift mitigation strategies in Belgium.

Main Methods:

  • Drift-interception experiments were conducted in a grassland (Lolium perenne) setting.
  • Tested structures included artificial screens (1-2m height, 16-63% open area) and Fagus sylvatica hedges (1.5m height).

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  • Experiments followed the international standard ISO 22866, with structures placed 1m from the field border.

    • Main Results:

    • The type of border structure significantly influences spray drift.
    • Screen height and open area are critical factors affecting drift interception.
    • The most effective drift reduction was achieved with a 1.5m artificial screen featuring a 16% open area.

    Conclusions:

    • Artificial screens and natural hedges are effective drift mitigation tools.
    • Optimized artificial screen design (1.5m height, 16% open area) offers substantial spray drift reduction.
    • Incorporating these structures into agricultural practices can enhance environmental protection.