Some aspects of nitrogen nutrition on selected Ilex
| dc.contributor.author | Gilliam, Charles Homer | en |
| dc.contributor.committeechair | Wright, Robert D. | en |
| dc.contributor.committeemember | Barden, John A. | en |
| dc.contributor.committeemember | Donohue, Stephen J. | en |
| dc.contributor.committeemember | George, M. F. | en |
| dc.contributor.committeemember | Reneau, Raymond B. Jr. | en |
| dc.contributor.department | Horticulture | en |
| dc.date.accessioned | 2014-03-14T21:15:32Z | en |
| dc.date.adate | 2010-07-08 | en |
| dc.date.available | 2014-03-14T21:15:32Z | en |
| dc.date.issued | 1977-09-05 | en |
| dc.date.rdate | 2010-07-08 | en |
| dc.date.sdate | 2010-07-08 | en |
| dc.description.abstract | Three holly cultivars, Ilex crenata, Thunb. 'Helleri' and 'Rotundifolia' and Ilex cornuta Lindl. et Paxt. 'Burfordi' were grown in 3 liter containers at 200, 300, 400 and 500 ppm nitrogen (N). Significant correlation coefficients were found between plant growth (dry wt accumulation) and both leaf N content and soil solution nitrates, while low correlation coefficients were found between soil nitrates and plant growth. Shoot growth of 'Helleri' and 'Burfordi' was not increased by N levels higher than 300 ppm while 400 ppm N was optimal for 'Rotundifolia'. The effects of 3N levels on tissue N fluctuations during a flush of growth on 'Helleri' were also studied. For all N levels, tissue N levels were shown to increase following the cessation of stem elongation until a level of tissue N was reached where a new flush of growth began. These N levels were approx the same for all N treatments. The time necessary to reach this level was dependent on the level of N added; 5 weeks for 300 ppm, 13 weeks for 150 ppm and 18 weeks for 50 ppm N. Once new growth began, tissue N levels began to decrease. The response of 'Helleri' to 15 fertilizer treatments consisting of different time and lengths was studied. Fertilizer applied during a period following the cessation of stem elongation and before the next flush resulted in greater total N and shoot growth, regardless of whether it was also applied during other weeks or not. Root growth was suppressed by 3 or more fertilizer applications, regardless of the time of application. | en |
| dc.description.degree | Ph. D. | en |
| dc.format.extent | 55 leaves | en |
| dc.format.medium | BTD | en |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.other | etd-07082010-020140 | en |
| dc.identifier.sourceurl | http://scholar.lib.vt.edu/theses/available/etd-07082010-020140/ | en |
| dc.identifier.uri | http://hdl.handle.net/10919/38706 | en |
| dc.language.iso | en | en |
| dc.publisher | Virginia Tech | en |
| dc.relation.haspart | LD5655.V856_1977.G55.pdf | en |
| dc.relation.isformatof | OCLC# 21263462 | en |
| dc.rights | In Copyright | en |
| dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en |
| dc.subject.lcc | LD5655.V856 1977.G55 | en |
| dc.subject.lcsh | Hollies | en |
| dc.title | Some aspects of nitrogen nutrition on selected Ilex | en |
| dc.type | Dissertation | en |
| dc.type.dcmitype | Text | en |
| thesis.degree.discipline | Horticulture | en |
| thesis.degree.grantor | Virginia Polytechnic Institute and State University | en |
| thesis.degree.level | doctoral | en |
| thesis.degree.name | Ph. D. | en |
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