The effects of vermicompost, vermicompost tea, and seaweed extract on grapevine and soil parameters of vineyards in British Columbia and Nova Scotia, Canada
department or school: Science, Irving K. Barber Faculty of (Okanagan)
department or school: Biology, Department of (Okanagan)
data provider: DSpace
degree campus: UBCO
creator: Yasari, Esmaeil
issued: 2025-01-06T17:49:55Z
issued: 2025
related degree: Master of Science - MSc
degree grantor: University of British Columbia
description: Organic-based material, including vermicompost and seaweed extract, can promote sustainable viticulture by enhancing productivity and minimizing environmental impact. In Okanagan Valley vineyards, studies conducted between 2020 and 2021 evaluated the effects of vermicompost, vermicompost tea, and seaweed extract on grapevine growth and productivity. Vermicompost applied to 10-year-old Chardonnay on SO4 rootstock vines at Thomas Ranch Vineyards did not significantly affect most growth parameters or yield, except for pruning weight in 2020 and yield in 2021. Medium and high rates maintained comparable yields to grower practice controls. Vermicompost notably increased soil organic C and total N, with a recommended application rate of 4.44 Mg ha⁻¹ in 2020 and 3.98 Mg ha⁻¹ in 2021 for cost-effectiveness. Vermicompost tea was tested on 34-year-old self-rooted Chardonnay Musqué vines at Blasted Church Vineyards. Application had minimal impact on growth and yield. Higher concentration and more frequent application occasionally improved berry weight and total soluble solids (TSS), but overall effects were inconsistent, suggesting that vermicompost tea's benefits depend on precise dosage and timing. The effect size of seaweed extract on Chardonnay vines in British Columbia and Nova Scotia on growth, fruit quality, and soil nutrients were small. It enhanced cluster looseness, however, and at high rate, reduced clusters per vine and yield. Lower rates and less frequent applications were more beneficial, indicating that moderate use is optimal for grapevine growth and yield. Overall, the studies suggested that while organic-based products like vermicompost and seaweed extract can maintain or enhance soil productivity and grape yield, their efficacy depends on appropriate application rates and frequencies.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/90051
note: THE EFFECTS OF VERMICOMPOST, VERMICOMPOST TEA, AND SEAWEED EXTRACT ON GRAPEVINE AND SOIL PARAMETERS OF VINEYARDS IN BRITISH COLUMBIA AND NOVA SCOTIA, CANADA by Esmaeil Yasari Ph.D., University of Pune, India (2007) MSc., University of Jiroft, Iran (1999) A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE in THE COLLEGE OF GRADUATE STUDIES (Biology) THE UNIVERSITY OF BRITISH COLUMBIA (Okanagan) December 2024 © Esmaeil Yasari, 2024 ii The following individuals certify that they have read, and recommend to the College of Graduate Studies for acceptance, a thesis entitled: The effects of vermicompost, vermicompost tea, and seaweed extract on grapevine and soil parameters of vineyards in British Columbia and Nova Scotia, Canada submitted by Esmaeil Yasari in partial fulfilment of the requirements of the degree of Master of Science. Dr. Melanie Jones, Irving K. Barber Faculty of Science Supervisor Dr. Mehdi Sharifi, Agriculture and Agri-Food Canada Co-Supervisor Dr. Louise Nelson, Irving K. Barber Faculty of Science Supervisory Committee Member Dr. Simone Castellarin, University of British Columbia (Vancouver) Supervisory Committee Member Dr. Sean Smukler, University of British Columbia (Vancouver) University Examiner iii Abstract Organic-based material, including vermicompost and seaweed extract, can promote sustainable viticulture by enhancing productivity and minimizing environmental impact. In Okanagan Valley vineyards, studies conducted between 2020 and 2021 evaluated the effects of vermicompost, vermicompost tea, and seaweed extract on grapevine growth and productivity. Vermicompost applied to 10-year-old Chardonnay on SO4 rootstock vines at Thomas Ranch Vineyards did not significantly affect most growth parameters or yield, except for pruning weight in 2020 and yield in 2021. Medium and high rates maintained comparable yields to grower practice controls. Vermicompost notably increased soil organic C and total N, with a…
has type: Thesis/Dissertation
date issued: 2025-02
is shown at: 10.14288/1.0447687
language: eng
degree discipline: Biology
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
contributor: Jones, Melanie D.
contributor: Sharifi, Mehdi
type: Text
identifier URI: http://hdl.handle.net/2429/90051