Plant Growth and Root Zone Management of Greenhouse Grown Succulents

dc.contributor.authorSnelson, Jonathan Bundyen
dc.contributor.committeechairScoggins, Holly L.en
dc.contributor.committeememberLatimer, Joyce G.en
dc.contributor.committeememberErvin, Erik H.en
dc.contributor.departmentHorticultureen
dc.date.accessioned2014-03-14T20:35:43Zen
dc.date.adate2012-06-07en
dc.date.available2014-03-14T20:35:43Zen
dc.date.issued2012-04-19en
dc.date.rdate2012-06-07en
dc.date.sdate2012-05-08en
dc.description.abstractEffects of media, soil moisture, fertility rate, and plant growth regulators on plant growth were investigated for 13 taxa of succulents. Media: Liners were grown in five common greenhouse substrates: 80% peat, 60% bark + 30% peat moss, 80% pine bark/20% Permatil (v/v), 100% composted pine bark, or whole tree substrate until market ready. Overall, higher percentage bark mixes yielded smaller plants, with lower shoot dry weights, shoot heights and widths. Soil Moisture: Liners were potted into a 60% bark/30% peat soilless potting mix. In group 1 , irrigation to container capacity occurred when volumetric soil moisture content fell below 30%, 20%, or 10%,. Group two (seven species) irrigation thresholds were shifted to 35%, 25%, and 15%. Effects of irrigation rate were significant in three of the 13 species studied, and those effects were species-specific. Fertility Rate: Liners were potted into60% bark/30% peat substrate. Fertility reatments in group were 0, 50, 100, or 200 mg.L-1 nitrogen. Group 2 plants received treatments of 50, 150, 250, or 350 mg.L-1 nitrogen. Four of the 11 species studied were affected by nitrogen rate, with rates up to 200 mg.L-1 generally producing the largest plants. PGRs: Seven species were potted into a 60% bark/30% peat substrate. Group one plants were treated with a foliar application of benzyladenine (Configure) at rates of 0, 400, 800, or 1600 mg.L-1. Group 2 plants were treated either BA at 0, 250, 500, or 1000 mg.L-1, dikegulac sodium (Augeo) at 400, 800, or 1600 mg.L-1, or a tank mix of 500 mg.L-1 Configure and 800 mg.L-1 Augeo. BA caused an increase in branches leaders or offsets in two species.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-05082012-110942en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05082012-110942/en
dc.identifier.urihttp://hdl.handle.net/10919/32398en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartSnelson_JB_T_2012.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectfertilizeren
dc.subjectmediaen
dc.subjectsoil moistureen
dc.subjectplant growth regulatorsen
dc.titlePlant Growth and Root Zone Management of Greenhouse Grown Succulentsen
dc.typeThesisen
thesis.degree.disciplineHorticultureen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen
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