Skip to Main Content
Can Phytophthora ramorum be spread with contaminated irrigation water?Author(s): D. Seipp; T. Brand; K. Kaminski; S. Wagner; S. Werres
Source: In: Frankel, Susan J.; Kliejunas, John T.; Palmieri, Katharine M., tech. coords. 2008. Proceedings of the sudden oak death third science symposium. Gen. Tech. Rep. PSW-GTR-214. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. pp. 99-100
Publication Series: General Technical Report (GTR)
Station: Pacific Southwest Research Station
PDF: View PDF (157 KB)
DescriptionIn a two year study, the spread of Phytophthora ramorum with contaminated irrigation water and the survival of the pathogen in water reservoirs were studied (Werres and others 2007). In addition at the end of each experimental period root ball samples from asymptomatic plants were taken to look for contamination with P. ramorum. For the study, an open air simulation system with nine separate container stands was used. The surplus water from each container stand ran back to a separate water basin. From the water basins, the water was taken for overhead irrigation of the plants on the container stands. In both years rooted Rhododendron cuttings of the cv ?Cunningham?s White?, in the second year also Viburnum plicatum cv 'Mariesii' were placed on the container areas and irrigated from above with water taken from the water reservoirs. The reservoirs were inoculated once a year in June with two different inoculum concentrations (low inoculum density: 12.5 Petri dishes per reservoir = 1000 L, high inoculum density: 25 Petri dishes per reservoir in 2004 and 50 in 2005). Three reservoirs were not inoculated.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
CitationSeipp, D.; Brand, T.; Kaminski, K.; Wagner, S.; Werres, S. 2008. Can Phytophthora ramorum be spread with contaminated irrigation water?. In: Frankel, Susan J.; Kliejunas, John T.; Palmieri, Katharine M., tech. coords. 2008. Proceedings of the sudden oak death third science symposium. Gen. Tech. Rep. PSW-GTR-214. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. pp. 99-100
KeywordsPhytophthora ramorum, sudden oak death, ramorum blight, water, nursery, survival, spread
- Variation in phenotype for resistance to Phytophthora ramorum in a range of species and cultivars of the genus Viburnum
- Effect of herbicides on production of inoculum and root colonization of plants infected with Phytophthora ramorum
- Natural outbreaks of Phytophthora ramorum in the U.K.—current status and monitoring update
XML: View XML