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Evaluation of Cylindrocladium Root Rot Control By Fumigation

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The effectiveness of soil fumigants used for control of Cylindrocladium root rot in Wisconsin state forestry nurseries was evaluated by assays of microsclerotial populations and by outplantings of stock from fumigated transplant beds. Mylone at 200 lb/acre active ingredient almost eliminated viable microsclerotia, but only to the depth to which it was mixed in the soil. Vorlex left viable microsclerotia near the soil surface; effectivenss of this chemical could be improved by covering the soil with polyethylene sheeting and by injection at a depth of 15 to 18 cm instead of 12 cm. Methyl bromide applied in a gel and without a polyethylene cover proved no more effective than Vorlex and also left a residual propagule population in the surface soil. Methyl bromide applied as a gas under a polyethylene cover was effective, but further trials with application rates are desirable. Mortality of red pine seedlings outplanted from fumigated transplant beds was significantly less than with seedlings from untreated beds, and diameter and height growth were greater. Forest Sci. 17:323-331.

Keywords: Pinus resinosa; root disease

Document Type: Journal Article

Affiliations: Professor, Dep of Plant Pathology, University of Wisconsin, Madison

Publication date: 1971-09-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2015 2016 Impact Factor: 1.782 (Rank 17/64 in forestry)

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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