Now showing items 11-20 of 43

    • Is Oak Wilt really a threat to New York State landscapes and forests? 

      Snover-Clift, Karen; Rosenthal, Emma (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2016-05-27)
      An overview of the history of oak wilt in New York; signs and symptoms; and reporting suspect samples.
    • Matters of Scale: Wax and Azalea Bark Scales 

      Gilrein, Dan (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2015-05-29)
      Wax scale (Ceroplastes ceriferus), also known as Indian wax scale, is a non-native pest established in the southeastern U.S. but now being found as far north as Long Island and Westchester County where it seems to be ...
    • Late Summer Pests at the Entomology Diagnostic Lab 

      Gilrein, Dan (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2017-09-01)
      Discussion of trial results for pesticide treatments of cottony hydrangea scale; skeletonized leaves on trees and shrubs caused by jumping bush cricket (Orocharis saltator); damage and treatment of leafminers in boxwood ...
    • Spotted Lanternfly (Lycorma delicatula): A new invasive pest in Pennsylvania 

      Gilrein, Dan (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2015-04-17)
      In 2014 the Pennsylvania Department of Agriculture received a report of a new pest on trees in Berks County (east of Reading), identified quickly as spotted lanternfly (SLF). Native to southeast Asia, it has been introduced ...
    • Hawthorn Diseases and Insects 

      Dailey O'Brien, Dawn (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2017-06-16)
      Hawthorns are deciduous trees in the apple family that are often used in the landscape because of their attractive clusters of white or pink spring flowers, dark green leaves, appealing shape and size (usually between 15 ...
    • The Hemlock Woolly Adelgid, A Pest We CAN Manage! 

      Whitmore, Mark (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2014-05-30)
      Cold temperatures have been documented as responsible for killing significant numbers of hemlock woolly adelgid (HWA) and have been thought to be regulating its march northward in New England. However, research indicates ...
    • Horsechestnut Leaf Problems 

      Dailey O'Brien, Dawn; Hudler, George (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2013-05-31)
      Horsechesnut (Aesculus spp.) are threatened by pests and pathogens that are likely to cause premature leaf dieback and abscission including horsechestnut leafminer, horsechestnut leaf blotch, horsechestnut leaf scorch an ...
    • What We Can Do To Save New York’s Hemlocks 

      Whitmore, Mark (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2015-05-15)
      Hemlocks in New York are currently threatened by the invasive Hemlock Woolly Adelgid (HWA), Adelges tsugae. Distribution, insecticide treatment, biological control of hemlock woolly adelgid in New York are covered. The New ...
    • The Gall of Those Midges! 

      Dailey O'Brien, Dawn (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2013-05-17)
      Midges are small fly-like insects in the Cecidomyiidae family of flies (order Diptera) that are likely to be noticed only by the most astute of observers. A gall is the result of a reaction by a plant to irritation. There ...
    • Gearing Up for 2017 

      Gilrein, Dan (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2017-04-07)
      A review of important weather and insect related impacts to the NY state forest in 2016 including gypsy moth, Bruce spanworm, balsam woolly adelgid, southern pine beetle, emerald ash borer, hemlock woolly adelgid, Norway ...