Tuesday, June 30, 2009
Friday, June 26, 2009
What's Hot HL Issue 13
Adult oriental beetle. Photo provided by: Mike Reding & Betsy Anderson, USDA Agricultural Research Service, Bugwood.org
Weed Hotline Issue 13
Japanese honeysuckle along side a road. Photo provided by: John M. Randall, The Nature Conservancy, Bugwood.org
Flowers of Japanese honeysuckle. Photo provided by: John M. Randall, The Nature Conservancy, Bugwood.org
Japanese honeysuckle infestation in woods near trail. Photo provided by: Clemson University - USDA Cooperative Extension Slide Series, , Bugwood.org
Disease Hotline Issue 13
Fairy rings. Photo provided by: Clemson University - USDA Cooperative Extension Slide Series, , Bugwood.org
Fairy rings (symptoms) on golf course fairway. Photo provided by: William M. Brown Jr., Bugwood.org
Downy mildew on rose leaves. Photo by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org
Downy mildew on rose. Photo provided by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org
A new text, "Diseases of Herbaceous Perennials", has been released by APS Press and is an excellent resource.
Insect Hotline Issue 13
Japanese beetle adult. Photo provided by: David Cappaert, Michigan State University, Bugwood.org
Friday, June 19, 2009
What's Hot HL Issue 12
Dogwood borer male. Photo provided by: James Solomon, USDA Forest Service, Bugwood.org
Dogwood borer female. Photo provided by: James Solomon, USDA Forest Service, Bugwood.org
Redheaded flea beetle damage on forsythia. Photo by: Brian Kunkel, Ornamentals IPM Extension Specialist, University of Delaware
Redheaded flea beetle adult. Photo by: Brian Kunkel, Ornamentals IPM Extension Specialist, University of Delaware
White prunicola scale adult males on holly. Photo by: Brian Kunkel, Ornamentals IPM Extension Specialist, University of Delaware
Fourlined plant bug feeding damage. Photo provided by: Whitney Cranshaw, Colorado State University, Bugwood.org
Fourlined plant bug adult. Photo provided by: Johnny N. Dell, Bugwood.org
Disease Hotline Issue 12
Powdery mildew on crabapple and apple. Photo provided by: University of Georgia Plant Pathology Archive, University of Georgia, Bugwood.org
Oak leaf blister. Photo found at: http://www.ppdl.purdue.edu/PPDL/images/TaphrinaOak1.jpg
Cedar quince rust on a juniper twig. Photo found at: http://www.uky.edu/Ag/kpn/kpn_09/pn_090414.html
Insect Hotline Issue 12
Cottony maple scale with egg masses. Photo provided by: Eugene E. Nelson, Bugwood.org
Cottony maple leaf scale adults with egg masses. Photo found at: http://www.ces.ncsu.edu/depts/ent/notes/O&T/trees/note37/cotma1.jpg
Cottony camellia/taxus scale and egg masses. Photo provided by: Eric R. Day, Virginia Polytechnic Institute and State University, Bugwood.org
Friday, June 12, 2009
Weed Hotline Issue 11
Yellow nutsedge. Photo provided by: Steve Dewey, Utah State University, Bugwood.org
Crabgrass. Photo provided by: Joseph LaForest, University of Georgia, Bugwood.org
Disease Hotline Issue 11
Frog-eye leaf spot on red maple. Photo by: Joseph O'Brien, USDA Forest Service, Bugwood.org
Bacteria blight on lilac. Twigs turn black and wilt from the tips back to the stem. (provided by Karen L. Snover-Clift, Cornell University) Photo found at: http://plantclinic.cornell.edu/FactSheets/LilacBactBlight/lilacbactblight.htm
Bacteria blight on lilac. Leaves often show damage around the margins and/or along the central vein. (provided by Karen L. Snover-Clift, Cornell University). Photo found at: http://plantclinic.cornell.edu/FactSheets/LilacBactBlight/lilacbactblight.htm
Insect Hotline Issue 11
Bagworm hanging from host terminal branch.
Bagworm larva in opened bag.
Adult male bagworm. All photos provided by: Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, , Bugwood.org
Friday, June 5, 2009
What's Hot HL Issue 10
Azalea bark scales. Photo provided by: United States National Collection of Scale Insects Photographs Archive, USDA Agricultural Research Service, Bugwood.org
Emerald ash borer adult (nickel in picture for size comparison), serpentine mines packed with frass. Photo provided by: Eric R. Day, Virginia Polytechnic Institute and State University, Bugwood.org
Exobasidium gall on azalea. Photo found at: http://hyg.ipm.illinois.edu/article.php?id=64
Lecanium scales. Photo provided by: James Solomon, USDA Forest Service, Bugwood.org
Weed Hotline Issue 10
White clover. Photo provided by: Chris Evans, River to River CWMA, Bugwood.org
Disease Hotline Issue 10
Figure 1: An artillery fungus spore packet within the cup. (provided by the Plant Disease Diagnostic Clinic, Cornell University.)
Figure 2: Artillery fungus spore packets stuck on the vinyl siding of a house. (provided by the Plant Disease Diagnostic Clinic, Cornell University.)
Both images were found at the following website: http://plantclinic.cornell.edu/FactSheets/artfungus/artilleryfungus.htm
Insect Hotline Issue 10
Diagram of Gladiolus thrips and damage. Photo provided by: Art Cushman, USDA; Property of the Smithsonian Institution, Department of Entomology, Bugwood.org
Western Flower thrips and damage. Photo provided by: David Cappaert, Michigan State University, Bugwood.org
Western flower thrips adult and immature. Photo provided by: Jack T. Reed, Mississippi State University, Bugwood.org
Privet thrips damage on privet. Photo provided by: Whitney Cranshaw, Colorado State University, Bugwood.org