Sunday, May 31, 2009
Friday, May 29, 2009
What's Hot HL Issue 9
Euonymus scale adults (gray = female, white = male). Photo provided by: Lisa Ames, University of Georgia, Bugwood.org
Pine bark adelgids. Photo provided by: Steven Katovich, USDA Forest Service, Bugwood.org
Xylosandrus germanus adult (ambrosia beetle). Photo provided by: Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, , Bugwood.org
Xyleborinus saxeseni adult (Asian ambrosia beetle). Photo provided by: Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, , Bugwood.org
Granulate ambrosia beetle feeding damage. Photo provided by: Laura Lazarus, North Carolina Division of Forest Resources, Bugwood.org
Weed Hotline Issue 9
Eastern poison ivy. Photo provided by: Gary Kling, University of Illinois, Bugwood.org
Diseae Hotline Issue 9
Ash rust. Photo provided by: Edward L. Barnard, Florida Department of Agriculture and Consumer Services, Bugwood.org
Black spot on rose. Photo provided by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org
Dutch elm disease early stage symptoms. Photo provided by: Joseph O'Brien, USDA Forest Service, Bugwood.org
Dutch elm disease. Photo provided by: William Jacobi, Colorado State University, Bugwood.org
Symptoms of Dutch elm disease. Photo provided by: Fabio Stergulc, Università di Udine, Bugwood.org
Streaking of Dutch elm disease. Photo provided by: Paul H. Peacher, USDA Forest Service, Bugwood.org
Dutch elm disease fruiting bodies. Photo provided by: William Jacobi, Colorado State University, Bugwood.org
Insect Hotline Issue 9
Lady beetle feeding on pine needle scale adults. Photo provided by: Whitney Cranshaw, Colorado State University, Bugwood.org
Pine needle scale adults. Photo provided by: Brytten Steed, USDA Forest Service, Bugwood.org
Friday, May 22, 2009
Weed Hotline Issue 8
Diagram of bermudagrass. Photo provided by: USDA PLANTS Database, USDA NRCS PLANTS Database, Bugwood.org
Bermudagrass. Photo provided by: David J. Moorhead, University of Georgia, Bugwood.org
Disease Hotline Issue 8
Septoria leaf spot on chrysanthemums. Photo provided by: Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org
Red thread. Photo provided by: Mary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org
A close-up of the "Red Threads". (provided by Dr. Eric B. Nelson, Cornell University) Photo found at http://plantclinic.cornell.edu/FactSheets/redthread/redthread.htm
Insect Hotline Issue 8
Crawlers and egg masses of hemlock wooolly adelgids. Photo provided by: Pennsylvania Department of Conservation and Natural Resources - Forestry Archive, , Bugwood.org
Hemlock Woolly adelgid eggs. Photo provided by: Shimat Joseph, University of Georgia, Bugwood.org
What's Hot Hotline Issue 8
Woolly beech aphids. Photo provided by: Haruta Ovidiu, University of Oradea, Bugwood.org
Adult cottony camellia scale. Photo provided by: United States National Collection of Scale Insects Photographs Archive, USDA Agricultural Research Service, Bugwood.org
Cottony camellia scale infestation. Photo provided by: John A. Weidhass, Virginia Polytechnic Institute and State University, Bugwood.org.
Wednesday, May 13, 2009
What's Hot HL Issue 7
Sycamore anthracnose. Photo by: Bob Mulrooney, Plant Pathologist Specialist, University of Delaware.
Insect Hotline Issue 7
Stipling on Cotoneaster caused by hawthorn lace bugs. Photo by: Brian Kunkel, University of Delaware, Ornamentals IPM Specialist.
Adult hawthorn lace bug. Photo by: Brian Kunkel, University of Delaware, Ornamentals IPM Specialist.
Adult sycamore lace bug. Photo by: Maja Jurc, University of Ljubljana, Bugwood.org.
Azalea lace bug adult. Photo by: Brian Kunkel, University of Delaware, Ornamentals IPM Specialist.
Oak lace bug damage. Photo by: Brian Kunkel, University of Delaware, Ornamentals IPM Specialist.
Oak lace bug nymphs. Photo by: Brian Kunkel, University of Delaware, Ornamentals IPM Specialist.
Adult oak lace bug. Photo by: Joseph Berger, Bugwood.org.
Disease Hotline Issue 7
Frogeye leafspot on apple caused by Botryosphaeria obtusa. Photo by: Bob Mulrooney, Plant Pathologist Specialist, University of Delaware.
Powdery Mildew on flowering dogwood. Photo by: Bob Mulrooney, Plant Pathologist Specialist, University of Delaware.
Friday, May 8, 2009
What's Hot HL Issue 6
Infestation of larch casebearers. Photo by: Milan Zubrik, Forest Research Institute - Slovakia, Bugwood.org.
Close-up of larch casebearer larva. Photo by: Ian Kimber, Bugwood.org.
Larch casebearer adult. Photo by: Ian Kimber, Bugwood.org.
Fire blight. Photo by: Rebekah D. Wallace, University of Georgia, Bugwood.org.
Evidence of fire blight on trunk of a crabapple. Photo by: William Jacobi, Colorado State University, Bugwood.org.
Western flower thrips adult. Photo by: Jack T. Reed, Mississippi State University, Bugwood.org.