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  • Viburnum Pests 

    Dailey O'Brien, Dawn (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2016-04-29)
    Common insect pests of viburnums include the black bean aphid (Aphis fabae) and the snowball aphid (Neoceruraphis viburnicola), Viburnum Leaf Beetle (Pyrrhalta viburni), the viburnum clearwing borer (Synanthedon viburni) ...
  • What is Making My Spruce Tree Drop its Needles? 

    Dailey O'Brien, Dawn (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2013-08-09)
    Spruce trees are susceptible to a variety of needle diseases that cause their needles to shed which can severely affect their aesthetic value and the health of the tree. Spruces can become more susceptible to diseases and ...
  • Consumer ‘Extended Weed Control’ Products: Nothing is Foolproof! 

    Senesac, Andy (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2016-07-15)
    The study evaluated four ready-to-use products available to homeowners that offer postemergence weed control and additional ‘extended control’. In the study these extended control products were applied to the base of four ...
  • Wasted Woodchips? What To Do? 

    Hudler, George (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2015-06-12)
    One big question that overshadows any efforts to use chips as mulch is whether or not those chips?-?if from a diseased tree?-?pose any threat to the health of the trees that are otherwise expected to benefit from the ...
  • Problematic Privets 

    Dailey O'Brien, Dawn; Hudler, George (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2012-06-15)
    Privet (Ligustrum spp.) is widely used as a landscape hedge and for the most part seems to tolerate life in a wide range of sites. However, there are number of pests that are commonly seen on this host. They include privet ...
  • Sudden Oak Death? Time for an update 

    Hudler, George (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2017-05-19)
    A review of the history of Sudden Oak Death, caused by Phytophthora ramorum and updates of the disease.
  • Rhododendron Problems: More Than Just Phytophthora 

    Mills, Jody (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2017-07-21)
    Although Phytophthora can be devastating to rhododendrons there are a variety of other problems that are actually more common.Cultural and site-related problems include interveinal chlorosis and desiccation injury. Disease ...
  • New Ornamental Pear Rust in the Neighborhood 

    Daughtrey, Margery; Hudler, George (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2012-05-18)
    One feature that has been in the Callery pear tree’s favor is its relative resistance (immunity?) to insects and diseases; but enthusiasm for that feature may now be dampened by the occurrence of pear trellis rust caused ...
  • Oyster-Shaped Scales 

    Dailey O'Brien, Dawn (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2017-04-21)
    Some of the more common oyster-shaped scales insects seen in the New York region include Oystershell Scale (Lepidosaphes ulmi), Euonymus Scale (Unaspis euonymi) Winged Euonymus Scale (Lepidosaphes yanangicola), Japanese ...
  • A New York State Oak Wilt Project: a few discoveries made and lessons learned 

    Snover-Clift, Karen (Cornell University Department of Plant Pathology and Plant-Microbe Biology, 2017-06-02)
    This article reviews the work involved in a recently completed Specialty Crop Block Grant project focusing on surveying for the oak wilt pathogen (with our NYS Department of Environmental Conservation [NYSDEC] collaborators) ...

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