Anhydrous ammonia application losses using single-disc and knife fertilizer injector

dc.contributor.author Hanna, H. Mark
dc.contributor.author Hanna, H. Mark
dc.contributor.author Boyd, Paul
dc.contributor.author Baker, James
dc.contributor.author Colvin, Thomas
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-16T04:33:54.000
dc.date.accessioned 2020-06-29T22:34:18Z
dc.date.available 2020-06-29T22:34:18Z
dc.date.embargo 2015-04-13
dc.date.issued 2005-01-01
dc.description.abstract <p>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.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_conf/429/
dc.identifier.articleid 1426
dc.identifier.contextkey 6978200
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_conf/429
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/459
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_conf/429/2005_Hanna_AnhydrousAmmonia.pdf|||Sat Jan 15 00:14:16 UTC 2022
dc.source.uri 10.13031/2013.18844
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords Anhydrous ammonia
dc.subject.keywords injector
dc.subject.keywords NH3
dc.subject.keywords nitrogen
dc.subject.keywords knife
dc.subject.keywords losses
dc.subject.keywords opener
dc.title Anhydrous ammonia application losses using single-disc and knife fertilizer injector
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 732298de-2ea9-4502-8fcf-3418080016e1
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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