Day lily leaf streak. Photo from a pdf found at: http://www.doacs.state.fl.us/pi/enpp/pathology/pathcirc/pp376.pdf by R.M. Leahy & T.S. Schubert
Sclerotinia root rot on sunflower. Photo provided by: Howard F. Schwartz, Colorado State University, Bugwood.org
“Sclerotia” of Sclerotina stem rot inside infected stem. Photo provided by: Paul Bachi, University of Kentucky Research & Education Center, Bugwood.org
Powdery mildew on crape myrtle. Photo provided by: Robert Lambe, Virginia Polytechnic Institute and State University, Bugwood.org
Tag Archives: powdery mildew
Disease Hotline Issue 6
Black spot on rose. Photo provided by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org
Powdery mildew on dogwood. Photo found at: http://www.ca.uky.edu/agcollege/plantpathology/ext_files/PPFShtml/PPFS-OR-W-13.pdf
Disease Hotline Issue 22
Powdery mildew on crape myrtle. Photo provided by: Robert Lambe, Virginia Polytechnic Institute and State University, Bugwood.org
What’s Hot HL Issue 17
Fall webworms and webbing on terminal branches. Photo by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.
Cicada killer adult. Photo provided by: Jessica Lawrence, NC State Entomology Department, Bugwood.org.
Cicadas captured and paralyzed by female cicada killer to provision her chambers. Photo by: Kenneth R. Law, USDA APHIS PPQ, Bugwood.org.
Clavate tortoise beetle. Photo by: David Cappaert, Michigan State University, Bugwood.org.
Thistle tortoise beetle. Photo by: David Cappaert, Michigan State University, Bugwood.org.
Thistle tortoise beetle larva. Photo by: David Cappaert, Michigan State University, Bugwood.org.
Rose midge larvae (white spots) on rose. Photo provided by: http://oregonstate.edu/dept/nurspest/rose_midge.htm.
Powdery mildew on flowering dogwood. Photo by: Mary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org.
Disease Hotline Issue 16
Powdery mildew on Norway Maple. Photo by: Andrej Kunca, National Forest Centre – Slovakia, Bugwood.org.
Powdery Mildew on Norway maple. Photo by: Petr Kapitola, State Phytosanitary Administration, Bugwood.org.
Phyllosticta leaf spot on Leucothoe. Photo by: Paul Bachi, University of Kentucky Research & Education Center, Bugwood.org.
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Phyllosticta leaf spot on Leucothoe. Image shown is a A single leaf spot with small, black spore-producing bodies (“pycnidia”) with white ooze containing spores. Photo provided by: Paul Bachi, University of Kentucky Research & Education Center, Bugwood.org. |
Asexual spores of Phyllosticta fungus. Photo by: Paul Bachi, University of Kentucky Research & Education Center, Bugwood.org.
Phyllosticta leaf spot on crape myrtle. Photo by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org.
Phyllosticta leaf spot on highbush blueberry. Photo by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org.