Disease Hotline Issue 26


Symptoms of girdling roots on tree. Photo provided by: Roland J. Stipes, Virginia Polytechnic Institute and State University, Bugwood.org

Girdling roots. Photo provided by: Joseph O’Brien, USDA Forest Service, Bugwood.org

Symptoms of Ganoderma root rot. Photo provided by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org

Fruiting bodies of Ganoderma root rot. Photo provided by: Minnesota Department of Natural Resources Archive, Minnesota Department of Natural Resources, Bugwood.org

Fruiting bodies of Ganoderma root rot. Photo provided by: USDA Forest Service – Region 8 Archive, USDA Forest Service, Bugwood.org

Weed Hotline Issue 26


Ground ivy. Photo provided by: Leslie J. Mehrhoff, University of Connecticut, Bugwood.org.

Canada thistle. Photo provided by: John M. Randall, The Nature Conservancy, Bugwood.org.

Close-up of Canada thistle leaves. Photo by: Leslie J. Mehrhoff, University of Connecticut, Bugwood.org.

Dandelion. Photo provided by: Howard F. Schwartz, Colorado State University, Bugwood.org.

Dandelion seedlings. Photo provided by: Joseph M. DiTomaso, University of California – Davis, Bugwood.org.

Clover. Photo provided by: Howard F. Schwartz, Colorado State University, Bugwood.org.

Weed Hotline Issue 25


Ground ivy. Photo provided by: Richard Old, XID Services, Inc., Bugwood.org.

Ground ivy, notice rooting at the nodes. Photo provided by: Ohio State Weed Lab Archive, The Ohio State University, Bugwood.org.

Ground Ivy seeds. Photo provided by: Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org.

Weed Hotline Issue 26

Mesotrione effect on crabgrass and nutsedge.

Mesotrione effect on plantain and Oxalis.

Control of crabgrass with mesotrione in turf.
All photos from the presentation “Mesotrione for Weed Control in Warm- and Cool-Season Turf” by Travis W. Gannon, Fred H Yelverton, and Leon S. Warren, North Carolina State University, Department of Crop Science. To view the full presentation go to http://www.turffiles.ncsu.edu/extension/presentations/2006/Mesotrione_WeedControl.pdf