Tree and shrub disease identification

    • [PDF File]Diagnosis of Ornamental Plant Diseases - University of Tennessee

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      but flower, shrub and tree species are sometimes misidentified, making disease diagnosis more difficult. •Imagine a healthy plant (what is normal) — Normal is conforming to a standard, such as usual, typical or expected shape, color, size, etc. It helps to know what a healthy plant species or particular cultivar should look like.


    • [PDF File]A Visual Guide: Spruce Problems - Missouri Botanical Garden

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      This fungal disease affects stressed trees and/or trees over 15 years old. Lower branches die. Needles turn brown and drop. On close examination of inner branches near the trunk, white patches of dried resin are visible on the bark. The whole branch is killed when it is girdled by the fungus. Eventually, it will kill the tree.


    • [PDF File]Tree and Shrub Diseases Powdery Mildews - University of Wisconsin–Madison

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      3/14/2017 5 • Control – DO NOT plant Colorado blue spruce – DO NOT crowd trees when planting – Thin healthy branches to increase airflow – Prevent tree stress – Prune diseased branches – Decontaminate pruning tools Tree and Shrub Diseases Rhizosphaera Needle Cast • Control – Destroy infected materials • Burn (where allowed) • Deep bury • Hot compost (needles)


    • [PDF File]How To Recognize Common Diseases of Oaks in the Midwest: A Quick Guide

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      for each disease—host range, causal agent(s), symptom expression, timing and distribution within the tree, impact on tree health, pattern of tree damage on site, and general management options—in an easy-to-read table format. This guide only includes key diagnostic information to keep it brief and pocket sized for use in the field.


    • [PDF File]Diseases of Shade and Ornamental Trees - University of Tennessee

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      in the outer sapwood of some tree species. Dutch elm disease is one of the best known diseases that affect shade trees. The pathogen was introduced into this coun-try in the 1930s. Dutch elm disease destroyed millions of Ameri-can elm that were planted in a virtual monoculture along city streets. It is spread by elm bark beetles and through ...


    • [PDF File]TREES OF OHIO field guide

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      This native tree can adapt to soils of variable pH and composition but prefers rich, well-drained soils with constant moisture. While Amer-ican beech is shade tolerant, it achieves best growth in partial to full sunlight. It is usually long-lived and free of problems, but can be susceptible to beech bark disease, beech leaf disease, and storm ...



    • [PDF File]Diseases of Evergreen Trees - University of Nebraska–Lincoln

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      Identification On redcedar and juniper. • Hard, brown ball-shaped orange gelatinous masses after early rains in the spring • Branches may be killed or broken down by numerous galls Control • Usually not needed on redcedar or juniper Can reduce the problem by controlling the disease Needle Cast of Spruce Identification • On Colorado blue ...



    • [PDF File]Plant Clinic Fact Sheet: Common Deciduous Tree Diseases in Illinois

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      of a tree, it is unusual for these diseases to cause lasting damage and most trees will leaf out again after a few weeks. Sanitation, maintaining tree vigor, and pruning out cankers are recommended for managing anthracnose diseases. Rusts . There are three common fungal rust pathogens in the genus Gymnosporangium that affect deciduous trees ...


    • [PDF File]Tree Insect + Disease Diagnosis Form - OSU Extension Service

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      tree a dark silhouette in the photo. You want the tree, branch, or trunk to be well lit. To get the right shot of your tree in question, this might mean walking to the other side of the tree, or even waiting until a different time of day to get a clear shot of the tree. Early morning and evening are usually great times to get landscape photos,


    • [PDF File]Tree and Shrub Insect and Disease Identification Form

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      DO NOT submit disease samples in plastic bags or containers. 2. For insect diagnosis. When submitting an insect sample, include enough host plant tissue to clearly show the damage or symptoms and to provide a food source that will sustain the insects for a few days. Insect samples can be placed in ventilated plastic bags or plastic containers.


    • [PDF File]UMass Plant Diagnostic Lab: TREE & SHRUB FORM*

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      Providing analysis, identification, and ecologically sound management strategies for diseases, insects, weeds, and nematodes found in landscapes, turf, nurseries, greenhouses, farms, orchards, and the urban forest. ... USE THIS FORM FOR: Tree/Shrub Disease Analysis ($50) Tree/Shrub Insect ID ($50) Pinewood Nematode ($50)


    • [PDF File]tree and shrub guide - Colorado State University

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      Tree selection is extremely important, planting trees with insects, disease, or other damage will result in an inferior, unhealthy tree. Therefore, trees and shrubs should be inspected prior to purchase. The following are things to look for at the nursery: • Injuries to trunk • Gouges, abrasions or cuts into the trunk bark • Loose or torn ...


    • [PDF File]T SHRUB DISEASE IDENTIFICATION FORM - University of Kentucky

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      Information to Supplement the Plant Disease Identification Form . Many tree and shrub problems are best diagnosed only after careful inspection of the whole plant in its growing site. However, because the plant disease diagnostician cannot visit the growing site, the grower’s observations and information can be of


    • [PDF File]Identifying Trees and Shrubs - Colorado Master Gardener

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      The terminology of plant identification can be intimidating to a beginner , as well as the experienced plant taxonomist. There are specific terms for the tiniest of traits. For example, in Plant Identification Terminology: An Illustrated Glossary, James Harris lists 35 terms that describe the hairs on the surfaces of stems and leaves.


    • [PDF File]Deciduous Tree and Shrub Diseases Powdery Mildews

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      2 • Pathogens – Rhytisma americanum – Rhytisma acerinum • Hosts: Maples • Favorable environment: Cool, wet weather Deciduous Tree and Shrub Diseases Tar Spot • Control – DO NOT panic – Remove/destroy diseased leaves • Burn (where allowed) • Deep bury • Hot compost – Use fungicides to prevent infections • Copper • Apply at bud break, 1/2 and full leaf expansion


    • [PDF File]Willow Scab - Cornell University

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      disease can reduce growth and vigor, resulting in twig or branch dieback and predisposing the plants to insects, other pathogens, and drought stress. When both willow scab and the aforementioned black canker fungus affect trees, the likelihood of stem and stool mortality is much higher. Although willow blight is a common disease on native


    • [PDF File]Disease Identification Guide for Tree Nuts - Syngenta US

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      Begin applications prior to disease onset when conditions are conducive for disease. Apply Quadris Top on a 14-21 day schedule making no more than two sequential applications before alternating to another fungicide with a non-QoI (Group 11) mode of action. If disease pressure is high, use the shortest interval. Application:


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