Nitrogen Rates
dc.contributor.author | Sawyer, John | |
dc.contributor.author | Randall, Gyles | |
dc.contributor.author | Sawyer, John | |
dc.contributor.department | Agronomy | |
dc.date | 2018-02-18T08:29:44.000 | |
dc.date.accessioned | 2020-06-29T23:02:11Z | |
dc.date.available | 2020-06-29T23:02:11Z | |
dc.date.copyright | Tue Jan 01 00:00:00 UTC 2008 | |
dc.date.embargo | 2017-04-05 | |
dc.date.issued | 2008-01-01 | |
dc.description.abstract | <p>In most crop rotations that include corn, nitrogen (N) applied to the corn phase is a proven and profitable practice. Corn in some rotations requires little to no N input, with first-year corn following established alfalfa as an example. Corn in other rotations requires substantial N input to meet plant requirements, with continuous corn (CC) typically requiring the greatest input. Other rotations or corn phases will be intermediate in N application requirement. With corn in the two most common crop sequences in the Corn Belt, corn following soybean (SC) and CC, if N is not applied, then yield will suffer. If N is not applied on an on-going basis, then over time corn yield will often average around 50 to 60 bu ac-1 in CC and 100 to 110 bu ac-1 in SC, or less. Consequently, the soil system typically cannot supply the full corn plant N requirement. On average, the yield with no N applied is around 70% in a SC rotation and 55% in CC of the yield obtained at an economic optimum rate. Therefore, supplemental N is needed to reach economic yield potential.</p> | |
dc.description.comments | <p>This is a proceeding from <em>Final Report: </em><em>Gulf Hypoxia and Local Water Quality Concerns Workshop </em>(2008): 59. Posted with permission.</p> | |
dc.format.mimetype | application/pdf | |
dc.identifier | archive/lib.dr.iastate.edu/agron_conf/34/ | |
dc.identifier.articleid | 1031 | |
dc.identifier.contextkey | 9980182 | |
dc.identifier.s3bucket | isulib-bepress-aws-west | |
dc.identifier.submissionpath | agron_conf/34 | |
dc.identifier.uri | https://dr.lib.iastate.edu/handle/20.500.12876/4373 | |
dc.language.iso | en | |
dc.source.bitstream | archive/lib.dr.iastate.edu/agron_conf/34/2008_Sawyer_NitrogenRates.pdf|||Fri Jan 14 23:41:01 UTC 2022 | |
dc.subject.disciplines | Agricultural Economics | |
dc.subject.disciplines | Agricultural Science | |
dc.subject.disciplines | Agronomy and Crop Sciences | |
dc.title | Nitrogen Rates | |
dc.type | article | |
dc.type.genre | conference | |
dspace.entity.type | Publication | |
relation.isAuthorOfPublication | 17ce8a78-56b3-47be-abcb-b22968be40f2 | |
relation.isOrgUnitOfPublication | fdd5c06c-bdbe-469c-a38e-51e664fece7a |
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