dc.contributor.advisor | Raun, William Robert | |
dc.contributor.author | Morris, Keri Brixey | |
dc.date.accessioned | 2014-04-15T22:06:15Z | |
dc.date.available | 2014-04-15T22:06:15Z | |
dc.date.issued | 2004-12-01 | |
dc.identifier.uri | https://hdl.handle.net/11244/9350 | |
dc.description.abstract | Winter wheat yields are directly affected by the amount of nitrogen (N) that is available to them for growth. Past research has indicated that spring application of N is more effective than fall application for winter wheat. This experiment was conducted to determine if potential yield reductions from early season N stress can be corrected using in-season N applications. Three experimental sites for two growing seasons (6 site - years) were used to evaluate 3 preplant N rates (0, 45, and 90 kg ha-1) and a range of in-season topdress N rates. Topdress N amounts were determined using a GreenSeekerTM hand held sensor and an algorithm developed at Oklahoma State University. Even when early season N stress was present (0-N preplant) N applied topdress at Feekes 5 resulted in maximum or near maximum yields at 4 of 6 sites when compared to other treatments receiving both preplant and topdress N. | |
dc.format | application/pdf | |
dc.language | en_US | |
dc.publisher | Oklahoma State University | |
dc.rights | Copyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material. | |
dc.title | Mid-season Recovery to Nitrogen Stress in Winter Wheat | |
dc.type | text | |
dc.contributor.committeeMember | Solie, John | |
dc.contributor.committeeMember | Johnson, Gordon | |
osu.filename | Morris_okstate_0664M_1105.pdf | |
osu.college | Agricultural Sciences and Natural Resources | |
osu.accesstype | Open Access | |
dc.description.department | Department of Plant and Soil Sciences | |
dc.type.genre | Thesis | |
dc.subject.keywords | nitrogen | |
dc.subject.keywords | wheat | |
dc.subject.keywords | sensors | |