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Presentation
Anhydrous ammonia application losses using single-disc and knife fertilizer injector
Agricultural and Biosystems Engineering Conference Proceedings and Presentations
  • H. Mark Hanna, Iowa State University
  • Paul M. Boyd, United States Army
  • James L. Baker, Iowa State University
  • Thomas S. Colvin, United States Department of Agriculture
Document Type
Article
Conference
2005 ASAE Annual International Meeting
Publication Version
Published Version
Publication Date
1-1-2005
DOI
10.13031/2013.18844
Conference Title
2005 ASAE Annual International Meeting
Conference Date
July 17–20, 2005
Geolocation
(27.941145, -82.455173)
Abstract

Anhydrous ammonia (NH3) is injected below the soil surface during application to limit loss to the atmosphere. Application at a shallower depth may reduce tractor power or allow greater speed which could increase field capacity if NH3 losses are held to acceptable levels. Losses of NH3 during, and for one hour after, field application were measured from a typical knife injector treatment operated at a 15-cm (6-in.) depth and 8 km/h (5 mi/h) travel speed and from a single-disc injector operated at shallower depths (5 and 10 cm (2 and 4 in.) and a range of travel speeds (8, 12, and 16 km/h (5, 7.5, and 10 mi/h). NH3 losses during application as measured with a hood over the single-disc injector were 3 to 7% in clay loam, silty clay loam, and loam soils and 21 to 52% in a coarser-textured fine sandy loam soil. Applying with a knife injector at deeper depth resulted in losses of 1 to 2% across all soil types. NH3 losses measured during an hour after application with stationary collection over the injection trench were 1% or less for all treatments. Losses during application were 5 to 55 times greater than during the first hour after application.

Rights
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
Language
en
Date Available
2015-04-13
File Format
application/pdf
Citation Information
H. Mark Hanna, Paul M. Boyd, James L. Baker and Thomas S. Colvin. "Anhydrous ammonia application losses using single-disc and knife fertilizer injector" Tampa, FL, United States(2005) p. 051060
Available at: http://works.bepress.com/mark_hanna/96/