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Performance of Russet Norkotah line selections at different rates of nitrogen

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dc.contributor.authorSather, Kent P., author
dc.contributor.authorThompson, Asunta L., advisor
dc.contributor.authorHolm, David G., advisor
dc.contributor.authorNissen, Scott J., committee member
dc.contributor.authorWallner, Stephen J., committee member
dc.date.accessioned2023-01-27T14:54:00Z
dc.date.available2023-01-27T14:54:00Z
dc.date.issued2003
dc.descriptionCovers not scanned.
dc.description.abstractRusset Norkotah line selections may be utilized to increase yields and profitability while reducing nitrogen applications normally required when producing Russet Norkotah. The Solanum tuberosum L. cultivar, Russet Norkotah, has increased in acreage since its release in 1987. Since the early 1990's, several breeding programs have made line selections that possess superior production potential under lower nitrogen rates. Five line selections and Russet Norkotah, were grown for two years at three rates of nitrogen in the San Luis Valley, Colorado. Selections included were Colorado 3 (CO3), Colorado 8 (CO8), Texas 112 (TXNS112), Texas 223 (TXNS223), and Texas 278 (TXNS278). The low, medium and high rates of nitrogen applied were approximately 100, 148 and 192 kilograms per hectare, respectively. Total and marketable yields generally increased as nitrogen rates increased. Yields were fairly consistent between years, except for standard Russet Norkotah. In 1998, selections at the low rate out yielded Russet Norkotah under higher rates. In 1999, selections grown under the low rate yielded similarly to Russet Norkotah at the high rate. Selections grown at the medium and high rate yielded significantly more. CO3 was the best producer overall. As vine fresh weight increased, tuber yield also increased. These results indicate acceptable tuber yields may be attained with Russet Norkotah line selections grown at lower nitrogen rates than currently used for standard Russet Norkotah production. Using Russet Norkotah line selections may result in increased profitability by increasing yields and reducing input costs, and may also minimize nitrogen loss due to leaching and run-off.
dc.format.mediummasters theses
dc.identifier.urihttps://hdl.handle.net/10217/236177
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relationCatalog record number (MMS ID): 991018868389703361
dc.relationSB211.P8S27 2003
dc.relation.ispartof2000-2019
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subject.lcshPotatoes
dc.subject.lcshCrops and nitrogen
dc.titlePerformance of Russet Norkotah line selections at different rates of nitrogen
dc.typeText
dc.typeStillImage
dcterms.rights.dplaThis Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
thesis.degree.disciplineHorticulture & Landscape Architecture
thesis.degree.grantorColorado State University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science (M.S.)

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