Show simple item record

dc.contributor.authorLowrey, Wesley D.en_US
dc.date.accessioned2009-07-14T19:41:45Z
dc.date.available2009-07-14T19:41:45Z
dc.date.issued2004-07-14T19:41:45Z
dc.identifier.urihttp://hdl.handle.net/10464/2297
dc.description.abstractA study was devised to evaluate influences of irrigation and fertigation practices on Vitis vinifera and Vitis labruscana grapes in the Niagara Peninsula. A modified FAO Penman- Monteith evapotranspiration formula was used to calculate water budgets and schedule irrigations. Five deficit irrigation treatments (non-irrigated control; deficits imposed postbloom, lag phase, and veraison; fiiU season irrigation) were employed in a Chardonnay vineyard. Transpiration rate (4-7 /xg H20/cmVs) and soil moisture data demonstrated that the control and early deficit treatments were under water stress throughout the season. The fiiU season irrigation treatment showed an 18% (2001) and 19% (2002) increase in yield over control due to increased berry weight. Soluble solids and wine quality were not compromised, and the fiiU season treatment showed similar or higher °Brix than all other treatments. Berry titratable acidity andpH also fell within acceptable levels for all five treatments. Irrigation/fertigation timing trials were conducted on Concord and Niagara vines in 2001- 02. The six Concord treatments consisted of a non-irrigated control, irrigation fi^om Eichhom and Lorenz (EL) stage 12 to harvest, and four fertigation treatments which applied 70 kg/ha urea. The nine Niagara treatments included a non-irrigated control, two irrigated treatments (ceasing at veraison and harvest, respectively) and six fertigation treatments of various durations. Slight yield increases (ca. 10% in Concord; 29% in Niagara) were accompanied by small decreases in soluble solids (1.5°Brix), and methyl anthranilate concentrations. Transpiration rate and soil moisture (1 1.9-16.3%) data suggested that severe water stress was present in these Toledo clay based vineyards.en_US
dc.language.isoengen_US
dc.publisherBrock Universityen_US
dc.subjectGrapesen_US
dc.subjectGrapesen_US
dc.subjectViticultureen_US
dc.subjectWine and wine makingen_US
dc.titleAssessing the influence of irrigation and fertigation on fruit composition, vine performance and wine quality in a cool, humid climate /en_US
dc.typeElectronic Thesis or Dissertationen_US
dc.degree.nameM.Sc. Biological Sciencesen_US
dc.degree.levelMastersen_US
dc.contributor.departmentDepartment of Biological Sciencesen_US
dc.degree.disciplineFaculty of Mathematics and Scienceen_US
refterms.dateFOA2021-08-07T02:33:07Z


Files in this item

Thumbnail
Name:
Brock_Lowrey_Wesley_2004.pdf
Size:
6.050Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record