Date of Award

2022

Publisher

North Dakota State University

Document Type

Thesis

Degree Awarded

Master of Science (MS)

Program

Plant Sciences

Department

Plant Sciences

College

Agriculture, Food Systems and Natural Resources

Faculty Advisor

Hatterman-Valenti, Harlene

Description

Cold hardiness and survival of wine grapes in two locations in North Dakota was determined using differential thermal analysis for five cultivars in 2020 and six cultivars from 2020-2021. Phenological data was collected during the growing season of 2020. Phenological data showed that cultivars broke bud early in the season and matured before the first fall frost. In 2020, cultivars at Red Trail Vineyard were hardier than those at the North Dakota State University Horticulture Research Station and ‘King of the North’ exhibited greatest hardiness, while ‘Frontenac’ and ‘Frontenac gris’ exhibited lowest hardiness. Across both locations, ‘King of the North’ proved to be the most cold hardy cultivar. Unpredictable minimum temperatures during dormancy, subsequent winter injury and herbicide drift all influenced bud cold hardiness, vine recovery, and survival. These results suggest that when growing wine grapes in North Dakota, cultivar selection and vineyard placement are critical factors in sustainable production.

Rights

NDSU policy 190.6.2

Rights Link

https://www.ndsu.edu/fileadmin/policy/190.pdf

Handle Identifier

https://hdl.handle.net/10365/32774

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