The Morton Arb

Articles tagged Rhizosphaera

• Spruce Diseases

  | Category: Insects & Diseases | Tags: Cytospora, canker, Rhizosphaera, Spruce, Spruce Diseases
  CYTOSPORA CANKER Cytospora canker, caused by the fungus Cytospora kunzei (also known as Valsa kunzei var. piceae), is the most prevalent and destructive fungal disease of Norway and Colorado blue spruce. Occasionally, Cytospora canker is found on...

• April 17, 2009 Plant Health Care Report

  | Category: Plant Health Care Reports | Tags: Woolly alder aphid, Volutella stem and leaf blight, Larch casebearer, Rhizosphaera, Aphids, Cytospora canker of spruce, Hemlock rust mite, Larch casebaerer, Lophodermium, spiny rose gall
  This issue contains details on many items including: Hemlock rust miteWoolly alder aphidLarch casebearerSpiny rose gallLophodermiumRhizosphaeraVolutella stem and leaf blightCytospora canker of spruceBlack knot DOWNLOAD THE APRIL 17, 2009 REPORT...