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Article

Disease Susceptibility of Interspecific Cold-Hardy Grape Cultivars in Northeastern U.S.A

1
University of Vermont Extension, 63 Carrigan Dr, Burlington, VT 05405, USA
2
Department of Plant & Soil Science, University of Vermont, 63 Carrigan Dr, Burlington, VT 05405, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Harlene Hatterman-Valenti
Horticulturae 2021, 7(8), 216; https://doi.org/10.3390/horticulturae7080216
Received: 1 June 2021 / Revised: 21 July 2021 / Accepted: 28 July 2021 / Published: 30 July 2021
(This article belongs to the Special Issue Grape Responses to Abiotic and Biotic Stresses)
Susceptibility to diseases of economically important grapes is critical to the evaluation of germplasm recommended for commercial production and for the development of sustainable production systems. In 2018–2019, the cold-hardy grape cultivars including ‘Brianna’, ‘Crimson Pearl’, ‘Itasca’, ‘Louise Swenson’, ‘Marechal Foch’, ‘Marquette’ ‘Petite Pearl’, ‘St. Pepin’, and ‘Verona’ were evaluated on non-treated vines for susceptibility to downy mildew, powdery mildew, black rot, anthracnose, Phomopsis leaf spot and fruit rot, and Botrytis bunch rot. No cultivars were consistently disease-free, and all exhibited some degree of black rot and powdery mildew infection. Relative susceptibility to disease was not consistent across both years, but ‘Brianna’ had greater incidence of black rot and ‘Louise Swenson’ showed lower incidence of powdery mildew in both years. The relatively new cultivars ‘Crimson Pearl’ and ‘Verona’ exhibited comparatively moderate disease susceptibility overall. Growers typically manage diseases with fungicides on commercial farms, so cultivar susceptibility is just one component of a sustainable pest management and production system. View Full-Text
Keywords: Vitis spp.; interspecific hybrid grapes; cultivar evaluation; Integrated Pest Management; disease resistance Vitis spp.; interspecific hybrid grapes; cultivar evaluation; Integrated Pest Management; disease resistance
MDPI and ACS Style

Hazelrigg, A.L.; Bradshaw, T.L.; Maia, G.S. Disease Susceptibility of Interspecific Cold-Hardy Grape Cultivars in Northeastern U.S.A. Horticulturae 2021, 7, 216. https://doi.org/10.3390/horticulturae7080216

AMA Style

Hazelrigg AL, Bradshaw TL, Maia GS. Disease Susceptibility of Interspecific Cold-Hardy Grape Cultivars in Northeastern U.S.A. Horticulturae. 2021; 7(8):216. https://doi.org/10.3390/horticulturae7080216

Chicago/Turabian Style

Hazelrigg, Ann L., Terence L. Bradshaw, and Gabriella S. Maia. 2021. "Disease Susceptibility of Interspecific Cold-Hardy Grape Cultivars in Northeastern U.S.A" Horticulturae 7, no. 8: 216. https://doi.org/10.3390/horticulturae7080216

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