Field olfactometry assessment of dairy manure land application methods

Robin C. Brandt, Herschel A. Elliott, M. A.Arlene Adviento-Borbe, Eileen F. Wheeler, Peter J.A. Kleinman, Douglas B. Beegle

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

Because odor potential is poorly correlated with measured concentrations of component gases, human sensory assessment (olfactometry) remains the ultimate means for quantifying agricultural odors. Field olfactometry measurements vary with wind velocity and source distance. To minimize this variability, dairy manure slurry was applied in a 10-ft swath to grassland in 200-foot diameter circles. Nasal Ranger® Field Olfactometer (NRO) instruments were used to collect dilution-to-threshold (D/T) observations from the center of each circle using four odor assessors taking four readings each over a 10-min period. The Best Estimate Threshold D/T (BET10) was calculated for five manure application methods and an untreated control. Field odor panel observations were performed before application and at <1 h, 2-4 h, and ∼24 h after manure spreading. Whole air samples were simultaneously collected for laboratory dynamic olfactometer evaluation using the triangular forced-choice (TFC) method. The BET10 of NRO data composited for all measurement times showed D/T levels decreased in the following order (α = 0.05): surface broadcast > aeration infiltration > surface + chisel incorporation > direct ground injection ≈ shallow disk injection > control, which closely followed laboratory TFC odor panel results (r = 0.83). We conclude field olfactometry can be useful for quantifying agricultural odor emissions but multiple assessors and observations, strict compliance with established protocols, and careful data analysis are essential.

Original languageEnglish (US)
Title of host publicationAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2008, ASABE 2008
PublisherAmerican Society of Agricultural and Biological Engineers
Pages6744-6759
Number of pages16
ISBN (Print)9781605605364
StatePublished - Jan 1 2008
EventAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2008 - Providence, RI, United States
Duration: Jun 29 2008Jul 2 2008

Publication series

NameAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2008, ASABE 2008
Volume11

Other

OtherAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2008
CountryUnited States
CityProvidence, RI
Period6/29/087/2/08

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences(all)

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  • Cite this

    Brandt, R. C., Elliott, H. A., Adviento-Borbe, M. A. A., Wheeler, E. F., Kleinman, P. J. A., & Beegle, D. B. (2008). Field olfactometry assessment of dairy manure land application methods. In American Society of Agricultural and Biological Engineers Annual International Meeting 2008, ASABE 2008 (pp. 6744-6759). (American Society of Agricultural and Biological Engineers Annual International Meeting 2008, ASABE 2008; Vol. 11). American Society of Agricultural and Biological Engineers.