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Steaming Inactivates Phytophthora ramorum, Causal Agent of Sudden Oak Death and Ramorum Blight, from Infested Nursery Soils in California
Plant Health Progress
  • Wolfgang Schweigkofler, Department of Natural Sciences and Mathematics, Dominican University of California
  • Kathleen Kosta, California Department of Food and Agriculture
  • Vernon Huffman, Department of Natural Sciences and Mathematics, Dominican University of California
  • Supriya Sharma, Department of Natural Sciences and Mathematics, Dominican University of California
  • Karen Suslow, Department of Natural Sciences and Mathematics, Dominican University of California
  • Sibdas Ghosh, Department of Natural Sciences and Mathematics, Dominican University of California
Document Type
Article
Publication Date
3-13-2014
Disciplines
Department
Natural Sciences and Mathematics
Abstract
Nursery trade plays a major role in the long-distance spread of Phytophthora ramorum, the causal agent of Sudden Oak Death (SOD) and ramorum blight of ornamental plants. Under federal regulations, nurseries found positive for P. ramorum must destroy infected plants and treat infested soils. The use of steam is an effective method to thermally inactivate P. ramorum from nursery soils as demonstrated at the National Ornamental Research Site at Dominican University (NORS-DUC) and one commercial nursery in the Central Valley of California. Heating up the top soil layer (0-30 cm) to 50°C for 120 minutes resulted in complete thermal inactivation of P. ramorum. Consequently, the commercial nursery was released from federal quarantine. Steaming can be a fast, reliable and sustainable option for treating nursery soils.
Rights

Copyright © 2014 The American Phytopathological Society. All rights reserved.

Publisher Statement
Originally published as Schweigkofler, W., Kosta, K., Huffman, V., Sharma, S., Suslow, K., & Ghosh, S. (2014). Steaming inactivates Phytophthora ramorum, causal agent of sudden oak death and ramorum blight, from infested nursery soils in California. Plant Health Research, 15(1). 43-47.
Citation Information
Wolfgang Schweigkofler, Kathleen Kosta, Vernon Huffman, Supriya Sharma, et al.. "Steaming Inactivates Phytophthora ramorum, Causal Agent of Sudden Oak Death and Ramorum Blight, from Infested Nursery Soils in California" Plant Health Progress Vol. 15 Iss. 1 (2014) p. 43 - 47 ISSN: 1535-1025
Available at: http://works.bepress.com/wolfgang_schweigkofler/30/