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Incidence and Spatial Distribution of Viruses in Hop Gardens of Washington State
journal contribution
posted on 2023-05-16, 13:22 authored by Pethybridge, SJ, Nelson, ME, Eastwell, KC, Klein, RE, Kenny, ST, Calum WilsonCalum WilsonThe incidences of Hop latent virus (HpLV), Hop mosaic virus (HpMV), and American hop latent virus (AHLV), members of the genus Carlavirus, and Prunus necrotic ringspot virus and Apple mosaic virus, members of the genus Ilarvirus, were assessed for two hop cultivars. Horizon and Nugget, in Washington State. The spatial distribution of plants infected by the carlaviruses was assessed in two Horizon gardens in 2000 and one Nugget garden in 1993, 1994, and 1995. In the first Horizon garden (garden 1) and the Nugget garden, plants were separated by 2.1 m within and between rows. In these gardens, cultivation and the wide plant spacing discouraged contact between plants in either direction. In the second Horizon garden (garden 2), plants were separated by 4.3 m between rows and 1.0 m within rows. In all gardens, mechanical operations operated predominantly along rows; however, the closer plant spacing within rows in garden 2 permitted contact between adjacent plants within rows. In both Horizon gardens, the distribution of plants infected with HpMV was aggregated within rows. However, the distribution of plants infected with HpLV and AHLV was strongly influenced by contact between plants. In the Nugget garden, the distribution of plants infected by all three carlaviruses was autocorrelated within rows by 1995.
History
Publication title
Plant DiseaseVolume
86Issue
6Pagination
661-665ISSN
0191-2917Department/School
Tasmanian Institute of Agriculture (TIA)Publisher
The American Phytopathological SocietyPlace of publication
St Paul, MN, USARepository Status
- Restricted