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Simple protocols to determine dust potentials from cattle feedlot soil and surface samples.

Daniel N Miller1, Bryan L Woodbury

  • 1USDA Agricultural Research Service, U.S. Meat Animal Research Center, P.O. Box 166, Clay Center, NE 68933, USA. miller@email.marc.usda.gov

Journal of Environmental Quality
|October 11, 2003
PubMed
Summary

Researchers developed methods to measure cattle feedlot dust potential, finding moisture and organic matter content are key factors. These protocols help compare dust emission potential from different samples and conditions.

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Area of Science:

  • Environmental Science
  • Agricultural Engineering
  • Atmospheric Science

Background:

  • Cattle feedlot dust poses environmental challenges, including nutrient transport, odor, and pathogen dispersion.
  • Factors influencing dust emissions in feedlots are not well understood.

Purpose of the Study:

  • To develop and validate protocols for assessing the dust-producing potential of feedlot surface and soil samples.
  • To investigate the influence of environmental conditions on dust emissions from cattle feedlots.

Main Methods:

  • A modified blender was used to generate dust from dried feedlot samples.
  • Airborne particles were collected on glass fiber filters via vacuum.
  • Optimized protocols involved specific sample volumes, blending times, and dust collection durations.

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Main Results:

  • The developed protocol provided consistent dust measurements across various samples.
  • Dust potential was significantly influenced by sample moisture and organic matter content.
  • The method showed limitations with samples exceeding 700 g H2O kg(-1) dry matter.

Conclusions:

  • The protocols offer a rapid and cost-effective way to compare the dust emission potential of different feedlot samples.
  • These methods are suitable for comparative analysis, not for predicting actual particulate matter emissions.
  • Understanding dust potential is crucial for managing environmental impacts in cattle feedlots.