HL Issue 18 2007

HL Issue 17 2007

HL Issue 16 2007

HL Issue 15 2007

Weed Hotline Issue 18

Bermudagrass control experiment with glyphosate and Basamid

Nimblewill control experiment with glyphosate and Basamid

Nimblewill control in fall with glyphosate (Roundup) and Basamid

Basamid application uniformity is key when not tarped.

All slides from a presentation by Shawn Askew, Extension Turfgrass Weed Scientist, Virginia Tech.

Insect Hotline Issue 18

Honeylocust pod gall midge

Photo by Whitney Cranshaw, forestryimages.org

Honeylocust pod gall midge damage

Photo by E. Bradford Walker, forestryimages.org

Honeylocust Pod Gall Midge Damage

Photo by Whitney Cranshaw, forestryimages.org

Honeylocust Pod Gall Midge Damage

Photo by Michael Masiuk, woodypests.cas.psu.edu/FactSheets/InsectFactSheets/html/Honey_Pod_Gall_Midge.html

Mimosa Webworm on Honeylocust

From Kansas Insect Newsletter, July 14, 2006, KSU Entomology Extension

Honeylocust Spider Mite

Photo by Whitney Cranshaw, forestryimages.org

Honeylocust Plant Bug

From woodypests.cas.psu.edu/FactSheets/InsectFactSheets/html/Honeylocust.html

Honeylocust Leafhopper

Photo by Whitney Cranshaw, forestryimages.org

Disease Hotline Issue 18

Nectria Canker on Honeylocust

Photo: Robert Blanchette, University of Minnesota Extension

Diplodia Tip Blight on Pine
Photo by Minnesota Department of Natural Resources Archives

forestryimages.org

Diplodia Tip Blight on Pine
Photo by Susan K. Hagle, forestryimages.org

Disease extra Hotline Issue 17

Peony Blotch on Tree Peony Leaves

Marginal Leaf Scorch Due to Water Stress on Katsura Tree

Photos by Bob Mulrooney, Extension Plant Pathologist, University of Delaware, Cooperative Extension

Weed Hotline Issue 17

Yellow Nutsedge Plants

Yellow Nutsedge in Turf Near Drain Outlet

Yellow Nutsedge Growing Through Mulch

Yellow Nutsedge Rhizomes

Glyphosate Spot Sprayed on Yellow Nutsedge: Multiple Applications Will Be Needed

Newly Forming Tubers at the End of Rhizomes on Yellow Nutsedge (magnified 8x)

Mature Tuber From Yellow Nutsedge (magnified 8x)

Triangular Stem of Yellow Nutsedge (Magnified 8x)

All Yellow Nutsedge Pictures by Gordon Johnson, Extension Agriculture and Commercial Horticulture Agent, University of Delaware, Kent County

Insect Hotline Issue 17

Azalea Lacebug and tarspots

Clemson University - USDA Cooperative Extension Slide Series, www.insectimages.org

Lacebug Feeding on Leaf

Photo by B.A. Kunkel, Extension IPM Specialist, Univ. Delaware

Lacebug Closeup

Photo by B.A. Kunkel, Extension IPM Specialist, Univ. Delaware

Disease Hotline Issue 17

Photo from Iowa State University Forestry Extension Website.

Bacterial Leaf Scorch on Pin Oak

Photo by Jim Peter, The Plant & Pest Diagnostic Laboratory at Purdue University

Bacterial Scorch on Pin Oak
Photo by Jim Peter, The Plant & Pest Diagnostic Laboratory at Purdue University

Bacterial Leaf Scorch on Oak

Photographer Edward L. Barnard, Florida Department of Agriculture and Consumer Services

Peony blotch on peony (Paeonia)

Image from Missouri Botanical Garden, Kemper Center for Home Horticulture Web Site

Weed Hotline Issue 16

Bermudagrass (wiregrass) Stolon

Bermudagrass (wiregrass) Infesting Cool Season Turfgrass

Bermudagrass (wiregrass) Infesting Liriope Bed

Bermudagrass (wiregrass) Hair-like Ligule, not Membranous

Bermudagrass (wiregrass) seed head

All Bermudagrass Pictures Taken By Gordon Johnson, Extension Agriculture and Horticulture Agent, University of Delaware, Kent County.

Insect Hotline Issue 16

Mimosa Webworm: Webbing on Leaves

Photo by John A. Weidhass, Virginia Polytechnic Institute and State University, Bugwood.org

Disease Hotline Issue 16

Bacterial Leaf Spot of Zinnia

Aster Yellows on Rudbeckia

Aster Yellows on Coneflower

Brown Patch on Tall Fescue Leaves

All Disease Pictures by Bob Mulrooney, University of Delaware, Extension Plant Pathologist