Aerial application of Agri-Fos® to prevent Sudden Oak Death in Oregon tanoak forests

Alan Kanaskie; Everett Hansen; Wendy Sutton; Paul Reeser; Carolyn Choquette

Treesearch

Aerial application of Agri-Fos® to prevent Sudden Oak Death in Oregon tanoak forests

Informally Refereed

Authors:

Alan Kanaskie, Everett Hansen, Wendy Sutton, Paul Reeser, Carolyn Choquette

Year:

2010

Type:

General Technical Report

Station:

Pacific Southwest Research Station

Source:

In: Frankel, Susan J.; Kliejunas, John T.; Palmieri, Katharine M. 2010. Proceedings of the Sudden Oak Death Fourth Science Symposium. Gen. Tech. Rep. PSW-GTR-229. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. pp. 225-232

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Abstract

We have been testing the practicality and efficacy of aerial application of Agri-Fos® for control of sudden oak death (SOD) in the Oregon tanoak (Lithocarpus densiflorus) forest. Helicopter application to forest stands has been compared with bole injection and groundbased spray application to seedlings and stump sprouts. We bio-assayed for Agri-Fos® uptake using twig and seedling inoculation with zoospores and bole wound inoculation. Experiments are continuing. Preliminary results indicate small but significant reductions in growth of Phytophthora ramorum in Agri-Fos® sprayed trees, comparable to the results obtained from bole injection.

Parent Publication

Proceedings of the Sudden Oak Death Fourth Science Symposium

Citation

Kanaskie, Alan; Hansen, Everett; Sutton, Wendy; Reeser, Paul ; Choquette, Carolyn. 2010. Aerial application of Agri-Fos® to prevent Sudden Oak Death in Oregon tanoak forests. In: Frankel, Susan J.; Kliejunas, John T.; Palmieri, Katharine M. 2010. Proceedings of the Sudden Oak Death Fourth Science Symposium. Gen. Tech. Rep. PSW-GTR-229. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. pp. 225-232