Agronomic and Economic Performance Characteristics of Conventional and Low-External-Input Cropping Systems

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dc.contributor.author Liebman, Matthew
dc.contributor.author Sundberg, David
dc.contributor.author Borza, Jaclyn
dc.contributor.author Heggenstaller, Andrew
dc.contributor.author Chase, Craig
dc.date 2018-02-13T08:09:39.000
dc.date.accessioned 2020-06-30T03:54:30Z
dc.date.available 2020-06-30T03:54:30Z
dc.date.copyright Mon Jan 01 00:00:00 UTC 2007
dc.date.embargo 2013-04-01
dc.date.issued 2007-01-01
dc.description.abstract <p>A 22-acre field experiment was conducted in Boone, IA, from 2003–2006 to test the hypothesis that low-external-input(LEI) cropping systems can produce yields and profits that match or exceed those obtained from conventional systems. A conventionally managed 2-year rotation system [corn (<em>Zea mays</em> L.)/soybean (<em>Glycine max</em> (L.) Merr.)] was compared with a 3-year LEI rotation system [corn/soybean/small grain + red clover (<em>Trifolium pratense</em> L.)], and a 4-year LEI rotation system [corn/soybean/small grain + alfalfa (<em>Medicago sativa</em> L.)/alfalfa]. Triticale (× <em>Triticosecale</em> Wittmack) was used as the small grain in 2003–2005; oat (<em>Avena sativa</em> L.) was used in 2006. Over the period of 2003– 2006, synthetic N fertilizer use was 59% and 74% lower in the 3- and 4-year systems, respectively, compared with the 2-year system. Similarly, herbicide use was reduced 76% and 82% in the 3- and 4-year systems.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/farms_reports/844/
dc.identifier.articleid 1845
dc.identifier.contextkey 3978941
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath farms_reports/844
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/36821
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/farms_reports/844/AgronEconomicPerformance.pdf|||Sat Jan 15 02:11:35 UTC 2022
dc.subject.disciplines Agricultural Science
dc.subject.disciplines Agriculture
dc.subject.disciplines Agronomy and Crop Sciences
dc.subject.keywords Agronomy
dc.title Agronomic and Economic Performance Characteristics of Conventional and Low-External-Input Cropping Systems
dc.type article
dc.type.genre ag_eng_agr_centr_ia_bio_research_farms
dspace.entity.type Publication
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