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dc.creatorVartak, Diptish Rameshen_US
dc.date.accessioned2012-06-07T22:34:46Z
dc.date.available2012-06-07T22:34:46Z
dc.date.created1993en_US
dc.date.issued1993
dc.identifier.urihttp://hdl.handle.net/1969.1/ETD-TAMU-1993-THESIS-V326en_US
dc.descriptionDue to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to digital@library.tamu.edu, referencing the URI of the item.en_US
dc.descriptionIncludes bibliographical references.en_US
dc.description.abstractChemical root pruning studies were carried out on greenhouse grown Photinia x fraseti commonly known as red-tip photinia. Thirty plants were grown in containers coated on interior surfaces with 100 g Cu(OH)2/liter and thirty were grown in non-treated containers. The effects of chemical root pruning on water relations and root morphology were studied. A model was developed to predict transpiration in greenhouse grown photinia. A separate experiment was conducted to test accuracy of stem gauges. Chemically root pruned plants had a higher plant water uptake (10-15 % more than non-pruned plants). This was due to the apparent increase in fibrosity of the root system. Root surface area was found to be uniformly distributed in treated containers. Consequently, the treated plants were morphologically better developed. Leaf water potential, stomatal conductance, and stomatal aperture measurements were not found to be significantly different in treatment and control. A problem of excessively high flow rates was observed due to very small or negative values of dT in the stem gauges. The data was reconstructed accurately using a newly developed computer program. A regression model was developed to predict transpiration for greenhouse grown photinia in response to greenhouse weather parameters. R 2was found to be 0.79. It may be increased by incorporating in the model an additional term of accurately measured amount of water applied.en_US
dc.format.mediumelectronicen_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_USen_US
dc.publisherTexas A&M Universityen_US
dc.rightsThis thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use.en_US
dc.subjectagricultural engineering.en_US
dc.subjectMajor agricultural engineering.en_US
dc.titleChemical root pruning and its effects on water relations and root morphology of photiniaen_US
dc.typeThesisen_US
thesis.degree.disciplineagricultural engineeringen_US
thesis.degree.nameM.S.en_US
thesis.degree.levelMastersen_US
dc.type.genrethesis
dc.type.materialtexten_US
dc.format.digitalOriginreformatted digitalen_US


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