Odor Control for Liquid Manure Land Application - Injection

Injecting or incorporating manure shortly after surface application can best prevent odorous emissions that occur as result of land application. Estimated costs to inject manure are $0.003 per gallon above the cost to haul and broadcast liquid manure. A portion of the added cost can be recaptured in the form of reduced nitrogen losses for injected manure versus broadcast application. Field tests in Iowa demonstrate odor reduction ranging from 50 to 75 percent with injection as compared to broadcast application. Based on these reports, greater benefits can be realized by incorporating manure after broadcast application.

Extension Publications

• PM 1970a Practices to Reduce Odor from Livestock Operations (pdf)
• PM 1970b Practices to Reduce Odor from Livestock Operations Flowchart (pdf)
• PM 1990 Instruments for Measuring Concentrations and Emissions Rates of Gasses and Particulates from Animal Feeding Operations (pdf)
• PM-1754e Iowa Odor Control Demonstration Project-Soil Injection (pdf)
• EDC 162h Air Quality and Animal Agriculture (pdf)
• PM-1935 Gaseous Emissions from Animal Agriculture (pdf)
• PM-1936 Air Quality Resources for Iowa Animal Agriculture
• PM 1963a The Science of Smell Part 1: Odor perception and Physiological Response (pdf)
• PM 1963b The Science of Smell Part 2: Odor Chemistry (pdf)
• PM 1963c The Science of Smell Part 3: Odor detection and measurement (pdf)
• PM 1963d The Science of Smell Part 4: Principles of Odor Control (pdf)
• PM 1964 Odor Control Methods Used by Iowa Pork Producers (pdf)
• FS925-A Understanding Livestock Odors (pdf)

Abstracts, Conference Proceedings, Presentations and Reports

Journal Articles

• Sweep Injection Tool Effects on Soil Surface Profile, Manure Exposure and Odor Emission

Newsletter Articles

Other Links

• Section 3 Outdoor Air Quality (MWPS-18)
• Minimizing Odor Generation, LPES Curriculum Lesson 41 (pdf)
• DNR 113 Separation Distances for Land Application of Manure (pdf)