replaced Graziosi placeholders
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Rich Braman
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<a href="#youtube-description-graziosi-tree-pests" class="md-skip">
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<a href="#gtbop-youtube-description" class="md-skip">
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<label class="md-nav__link md-nav__link--active" for="__toc">
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YouTube
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</a>
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<a href="#understanding-tree-pests-disease-interactions-invasive-threats-and-management-strategies" class="md-nav__link">
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Understanding Tree Pests: Disease Interactions, Invasive Threats, and Management Strategies
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<a href="#understanding-tree-pests-disease-interactions-invasive-threats-and-management-strategies" class="md-nav__link">
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Understanding Tree Pests: Disease Interactions, Invasive Threats, and Management Strategies
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@@ -2554,12 +2621,66 @@
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<h1 id="youtube-description-graziosi-tree-pests">YouTube Description — Graziosi, Tree Pests<a class="headerlink" href="#youtube-description-graziosi-tree-pests" title="Permanent link">¶</a></h1>
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<blockquote>
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<p><strong>Placeholder</strong> — Paste your Stage 3 pipeline output here.</p>
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</blockquote>
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<h1 id="gtbop-youtube-description">GTBOP YouTube Description<a class="headerlink" href="#gtbop-youtube-description" title="Permanent link">¶</a></h1>
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<h2 id="understanding-tree-pests-disease-interactions-invasive-threats-and-management-strategies">Understanding Tree Pests: Disease Interactions, Invasive Threats, and Management Strategies<a class="headerlink" href="#understanding-tree-pests-disease-interactions-invasive-threats-and-management-strategies" title="Permanent link">¶</a></h2>
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<hr />
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<p><em>Processed for UGA Center for Urban Agriculture / GTBOP Archives</em></p>
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<p><strong>Copy everything below this line into the YouTube description field:</strong></p>
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<hr />
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<p>Understanding Tree Pests: Disease Interactions, Invasive Threats, and Management Strategies | GTBOP Webinar Series</p>
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<p>Dr. Ignazio Graziosi, Assistant Professor in the Warnell School of Forestry and Natural Resources at the University of Georgia, presents a framework for understanding tree pest damage through ecological interactions. Using the disease triangle and spiral of tree decline, he examines how the pest, host tree, and environment interact to produce damage — particularly in stressful urban settings.</p>
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<p>Three case studies illustrate different ecological scenarios: the emerald ash borer (EAB), a non-native pest devastating native ash; crapemyrtle bark scale (CMBS), a non-native pest on non-native crapemyrtle; and the orange-striped oakworm moth, a native pest on native oaks. For each, Dr. Graziosi explores host susceptibility, environmental factors, natural enemies, and chemical and biological control strategies, providing a practical decision-making framework for landscape professionals.</p>
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<p>Presented January 15, 2026 | Getting the Best of Pests (GTBOP) Webinar Series | Green & Commercial
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Hosted by the UGA Center for Urban Agriculture
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Moderator: Dr. Bodie Pennisi, UGA Horticulturist</p>
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<p>⏱️ TIMESTAMPS
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0:00 Introduction and speaker credentials
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1:28 The disease triangle: pest, tree, and environment
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3:02 The spiral of tree decline
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6:07 Native vs. non-native pest and tree interactions
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7:22 Example 1: Emerald ash borer (EAB) — overview
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8:23 EAB life cycle and damage symptoms
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10:48 EAB generation time and temperature effects
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11:57 EAB spread across North America and firewood
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13:47 EAB in Georgia and native ash species diversity
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15:26 White fringetree as alternate EAB host
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16:43 Global trade and non-native species introductions
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18:20 The invasion curve: detection, eradication, and control
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21:32 Why EAB is not a pest in Asia
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22:34 Chemical control methods for EAB
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23:57 Importation biological control: parasitoid wasps
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28:01 Native natural enemies and the goal of balance
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29:42 Example 2: Crapemyrtle bark scale (CMBS) — overview
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31:47 CMBS biology, life cycle, and overlapping generations
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33:47 CMBS invasion timeline and early detection
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35:02 CMBS and the invasion curve in Georgia
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36:06 CMBS host range expansion in North America
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36:42 Urban heat island effects on scales
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37:28 Chemical control options for CMBS
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38:31 Natural enemies: lady beetles and lacewings
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42:04 Balancing chemical and biological control for CMBS
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42:25 Example 3: Orange-striped oakworm moth — overview
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43:53 Oakworm life cycle and seasonal timing
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44:51 Why urban and clonal trees are vulnerable
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46:35 Natural enemies of the oakworm
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47:56 Control decisions: damage thresholds and Btk
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49:19 Presentation wrap-up and key takeaways
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50:01 Moderator comments on CMBS expansion in Georgia</p>
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<p>❓ Q&A HIGHLIGHTS</p>
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<p>Q: What is the disease triangle?
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A: Damage results from the interaction of the pest, the host tree, and the environment — not the pest alone.</p>
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<p>Q: How does firewood spread the emerald ash borer?
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A: Infested firewood was the primary pathway for EAB's rapid spread, closely matching the highway system and leading to the "Don't Move Firewood" campaign.</p>
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<p>Q: Why is trunk injection ineffective for crapemyrtle bark scale?
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A: Crapemyrtle absorbs systemic insecticides very slowly. Soil drench, soil injection, and foliar sprays are recommended instead.</p>
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<p>Q: When should you treat for orange-striped oakworm?
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A: The threshold is about 25% defoliation. Late-season defoliation is less harmful. Btk is effective against young larvae with minimal impact on natural enemies.</p>
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<p>📚 RESOURCES
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• Submit sign-in sheets for CEU credit: gtbop@uga.edu
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• iTree tools for calculating tree benefits: itreetools.org
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• QR codes for UGA extension publications on EAB and CMBS were shown during the presentation</p>
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<p>🔗 ABOUT GTBOP
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Getting the Best of Pests (GTBOP) is a continuing education webinar series for pest management and Green Industry professionals, hosted by the University of Georgia Center for Urban Agriculture.</p>
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<h1 id="treehealth-emeraldashborer-crapemyrtlebarkscale-pestmanagement-ipm-arboriculture-uga-gtbop-continuingeducation-urbanforestry-biologicalcontrol">TreeHealth #EmeraldAshBorer #CrapemyrtleBarkScale #PestManagement #IPM #Arboriculture #UGA #GTBOP #ContinuingEducation #UrbanForestry #BiologicalControl<a class="headerlink" href="#treehealth-emeraldashborer-crapemyrtlebarkscale-pestmanagement-ipm-arboriculture-uga-gtbop-continuingeducation-urbanforestry-biologicalcontrol" title="Permanent link">¶</a></h1>
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