In-Season Nitrogen Fertilization of Soybean Sawyer, John Sawyer, John Barker, Daniel Barker, Daniel 2018-02-13T10:41:30.000 2020-06-30T03:46:26Z 2020-06-30T03:46:26Z Mon Jan 01 00:00:00 UTC 2001 2013-05-07 2001-01-01
dc.description.abstract <p>Nitrogen (N) fertilization is not a traditional nutrient management practice for soybean production in Iowa. Soybean is a legume plant and is assumed to adequately obtain needed N through symbiotic fixation. However, there is interest in using N fertilization to increase yield and grain protein due to the recognition of the large N requirement associated with high yields. Despite the fact that soybean is a legume, it readily utilizes soil inorganic N and will do so preferentially to symbiotic N<sub>2</sub> fixation. Depending on the residual inorganic N level and soil N mineralization characteristics, approximately 40 to 75% of the N in a mature soybean plant is derived from the soil. Also, soybean seems to require this soil derived N for high yield. The overall objectives of this research were to determine the impact of soil applied N fertilizer at the beginning pod stage (R3) of soybean growth on grain yield and quality components. Additional objectives were to study response to N fertilizer placement, material (N release characteristic), and rate.</p>
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dc.identifier archive/
dc.identifier.articleid 2834
dc.identifier.contextkey 4112912
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath farms_reports/1831
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 21:40:11 UTC 2022
dc.subject.disciplines Agricultural Science
dc.subject.disciplines Agriculture
dc.subject.disciplines Agronomy and Crop Sciences
dc.subject.keywords Agronomy
dc.title In-Season Nitrogen Fertilization of Soybean
dc.type article
dc.type.genre rhodes_research_and_demonstration_farm
dspace.entity.type Publication
relation.isAuthorOfPublication 17ce8a78-56b3-47be-abcb-b22968be40f2
relation.isAuthorOfPublication 9c31ee99-d456-4aef-8e50-5c46e4e21cd7
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