Plum Pox Virus - Invasive Species - Lecture Slides, Slides of Biology

Download Plum Pox Virus - Invasive Species - Lecture Slides and more Slides Biology in PDF only on Docsity! Plum Pox Virus Docsity.com Also Known as Sharka or PPV A Devastating Viral Disease of Stone Fruit, Ornamental Shrubs and Trees from The Genus - Prunus Plum Pox Virus Docsity.com Sweet & Tart Cherries Docsity.com Almonds Docsity.com Distribution Maps of Quarantine Pests for Europe Plum pox potyvirus National record Present Present only in some areas Subnational record @ | Present (3) Present only in some areas 2006-09-19 Docsity.com  Symptoms Vary According To The Type and Severity of The Disease Strain • Leaf Symptoms: – Vein Yellowing, Light Green or Yellow Rings, May Show Crinkling, Puckering, Curling • Fruit Symptoms: – Ring Patterns, Blotches, Flesh Discoloration, Misshaped, Deformed • Flower Symptoms: – Color Breaking or Streaking in Flowers of PPV Infected Peach Blossoms. Docsity.com 4 Ey Sy s © ra 3 Fi i] Docsity.com  Deformed Fruit & Stones Docsity.com PPV Virus • Six Strains of Virus • Strain D - The Strain Found in North America • This Strain Only Infects Peaches, Nectarines, Apricots, Plums, • No Treatment - No Cure Docsity.com Transmission & Spread • Short Distance Spread Result of Aphid Transmission • Several Aphid Species Can Transmit PPV – • Northeastern US Concerned With Black Bean Aphid Spirea Aphid Black Peach Aphid Green Peach Aphid • Long Distance Spread By Movement of Infected Plants or Plant Parts Docsity.com How To Manage PPV Natural or Chemical Application May Reduce Aphid Numbers But Impossible To Entirely Control Aphid Population Docsity.com Eradication • Eradication Is The Most Successful Treatment • Timely Removal Of Diseased Trees Once A Tree Is Confirmed To Be A Carrier Of PPV It Must Be Eliminated • Stumps Must Also Be Treated Herbicides Used To Prevent Re-growth - Sucker Shoots Docsity.com Questions? Docsity.com