Rich Braman
219 lines
13 KiB
Markdown
219 lines
13 KiB
Markdown
# GTBOP Processing Log: Weed Control in Ornamentals — Dr. Chris Marble
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## Conversation Snapshot — February 27, 2026
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---
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## Webinar Details
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| Field | Details |
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| ------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| **Title** | Weed Control in Ornamentals for the Nursery and Landscape |
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| **Speaker** | Dr. Chris Marble, Associate Professor, Ornamental and Landscape Invasive Weed Management, Mid-Florida Research and Education Center, University of Florida |
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| **Moderator** | Dr. Shimat Joseph, UGA Turfgrass Entomologist |
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| **Webinar Date** | July 13, 2023 |
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| **Series** | Green & Commercial |
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| **Duration** | 50:38 |
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| **Topic Area** | Weed Science |
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| **CEU Categories** | 10 (Private), 21, 23, 24, 27, 31, 32, 35 |
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---
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## Pipeline Stages Completed
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All five standard archive stages were completed in a single session:
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| Stage | Deliverable | Filename |
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|-------|-------------|----------|
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| **1** | Corrected SRT | `GTBOP_Transcript_2023-07-13_WeedControlOrnamentals.srt` |
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| **1** | Correction Summary | `GTBOP_Corrections_2023-07-13_WeedControlOrnamentals.md` |
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| **2** | Archive Package | `GTBOP_Archive_Summary_2023-07-13_WeedControlOrnamentals.md` |
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| **3** | YouTube Description | `GTBOP_YouTube_2023-07-13_WeedControlOrnamentals.md` |
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| **3** | Website Version | `GTBOP_Website_2023-07-13_WeedControlOrnamentals.md` |
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| **3** | Extension Agent Version | `GTBOP_ExtAgent_2023-07-13_WeedControlOrnamentals.md` |
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| **4** | Moodle Quiz | `GTBOP_Quiz_2023-07-13_WeedControlOrnamentals.md` |
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| **4** | Moodle Matching | `GTBOP_Matching_2023-07-13_WeedControlOrnamentals.md` |
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| **5** | Prose Transcript | `GTBOP_ProseTranscript_2023-07-13_WeedControlOrnamentals.md` |
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Stage 6 (Collaborative Writing Resources) was not requested for this webinar.
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---
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## Stage 1: Transcript Correction — What Happened
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### Source File
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- **Input:** `Weed_Control_in_Ornamentals_for_the_Nursery_and_Landscape_with_Dr__Chris_Marble.srt`
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- **618 subtitle blocks**, 2,473 lines, read in full across 6 sequential chunks before any processing began
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### Transcript Quality
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This was an unusually correction-heavy transcript. Whisper struggled significantly with weed science terminology, producing **~80 individual corrections across 65+ blocks**. Two systematic errors dominated:
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**1. "Herbicides" rendered 7+ different ways (~15 occurrences)**
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Whisper could not capture the word "herbicides" and produced: "cervicides," "service sites," "surface sites," "service side," "service size," "services," and "pelvies sites." All were corrected to "herbicides" in context.
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**2. "Weed species/spectrum" rendered as "wheat" (6 occurrences)**
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Whisper consistently heard "wheat" instead of "weed" — corrected throughout.
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### Other Major Correction Categories
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- **Speaker name:** "Mahabou" → "Marble" (Whisper garbled the speaker's surname)
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- **Institution:** "Mid-Florida Church and Education Center" → "Mid-Florida Research and Education Center"
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- **Product names:** Heavy corrections needed — Specticle, SureGuard, Gallery, isoxaben, Finale, Fusilade, Basagran, Lontrel, Pennant Magnum, Axxe, Finalsan, FireWorxx, and many active ingredients (flumioxazin, indaziflam, clopyralid, sethoxydim, clethodim, fluazifop, fenoxaprop, acetic acid)
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- **Technical terms:** "woody one of mills" → "woody ornamentals," "annual brograss" → "annual bluegrass," "gramaticides" → "graminicides," "mongongrass" → "mondo grass," etc.
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### Audio Verification Round
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Nine items were flagged `[VERIFY]` in the initial corrected SRT for audio confirmation. Rich checked all nine against the recording and provided resolutions:
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| Block | Flagged Item | Resolution |
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|-------|-------------|------------|
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| 79 | "mills in the landscape" | **Corrected** → "ornamentals in the landscape" |
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| 117 | "especially broadly, ornamental plants" | **Confirmed** as transcribed |
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| 189 | "your men's and weeds" | **Corrected** → "you're managing weeds" |
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| 472 | "Fireworks" | **Corrected** → "FireWorxx" |
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| 525 | "Segment" | **Confirmed** as transcribed |
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| 555 | "plan outs" (initially corrected to "plant apps") | **Confirmed** as "plan outs" — reverted |
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| 592 | "not when wind speeds are below 5 mph" | **Confirmed** as transcribed |
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| 612 | Repeated "Marengo" | **Corrected** → "SureGuard" |
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| 613 | "Tau" (initially corrected to "Tower") | **Confirmed** as "Tower" |
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After resolutions, zero VERIFY flags remain in the final corrected SRT.
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### New Speaker for Reference Roster
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Dr. Chris Marble is not in the existing GTBOP speaker reference. Recommended addition:
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| Name | Affiliation |
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|------|-------------|
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| Dr. Chris Marble | Associate Professor, Ornamental and Landscape Invasive Weed Management, Mid-Florida Research and Education Center, University of Florida |
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### New Correction Patterns
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This transcript surfaced numerous product names not previously in the Common Corrections Reference. The correction summary includes a table of 14+ new Whisper-to-correct patterns for future use, including: cervicides → herbicides, Fireworks → FireWorxx, Axe → Axxe, Final Sand → Finalsan, acidic acid → acetic acid, gramaticides → graminicides, Pusillate → Fusilade, Basagram/Bacagrand → Basagran, Long Trail/Lontrell → Lontrel, clopyrrolid → clopyralid, Phenal → Finale, Pindemagnum → Pennant Magnum, Dazzaplam → indaziflam.
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### Verification
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- Block count: 618 original = 618 corrected ✓
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- All 1,236 timestamps preserved exactly ✓
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- No blocks merged or split ✓
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---
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## Stage 2: Archive Package — What Was Produced
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The archive package contains three sections, all derived exclusively from the corrected transcript:
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### Narrative Summary
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- 385 words, flowing paragraphs, no bullet points
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- Covers the full presentation arc: calibration fundamentals → pre/post-emergence timing → three-step herbicide selection → pre+post research results → glyphosate alternatives → selective herbicides → resources/Q&A
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- Every topic traceable to specific transcript content
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### YouTube Timestamps
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- 38 chapter markers covering the full 50:38 duration
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- First timestamp: `0:00` ✓
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- Last timestamp: `49:08` (within 1:30 of end) ✓
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- Density note: 38 entries across ~51 minutes is denser than the typical 3–5 minute interval. This presentation had unusually frequent topic transitions — Marble moved through substantial material quickly. The density reflects genuine content shifts, not over-segmentation.
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### Questions & Answers
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- 11 Q&A pairs (within the 8–12 target range)
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- Mix of recall, application, and identification questions
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- All answers derived directly from presentation content — no external information
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- Covers calibration, timing, the three-step process, rotation importance, pre+post research, glyphosate alternatives, desiccant performance, selective options, signal words, and drift reduction
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---
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## Stage 3: Platform Optimization — Three Versions
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### YouTube Description
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- 4,914 characters (within ~5,000 limit)
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- Condensed single-paragraph summary
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- All 38 timestamps retained
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- Q&A condensed to 4 highest-value pairs
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- Hashtags included
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### Website Version
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- Full archive package from Stage 2
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- Formatted for web publication with complete Q&A and resource links
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### Extension Agent Version
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- CEU category table prominently displayed with all 8 applicable categories
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- Asynchronous viewing instructions for county agent CEU delivery
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- Condensed content summary with a "Key Topics for CEU Relevance" section connecting material to license categories
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- Full chapter list for video navigation
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---
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## Stage 4: Moodle Activities — Quiz and Matching
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### Quiz
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- **15 multiple choice questions** with answer keys
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- Difficulty distribution: 53% Recall / 33% Application / 13% Analysis
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- Coverage spans early (Q1–7: calibration, timing, environmental factors), middle (Q8–11: rotation, three-step selection, research), and late (Q12–15: alternatives, graminicides, signal words) portions of the presentation
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- Every question includes timestamp references and transcript source citations
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- No "all of the above" / "none of the above" options
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- All distractors drawn from plausible but incorrect interpretations of presentation content
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### Matching Exercises
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Three exercises, each with distractors to prevent elimination guessing:
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| Exercise | Type | Pairs | Distractors |
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|----------|------|:-----:|:-----------:|
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| 1: Post-Emergence Products & Characteristics | Product-Characteristic | 7 | 2 |
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| 2: Pre-Emergence Mode of Action Groups | Product-Category | 6 | 1 |
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| 3: Weed Management Timing & Practice | Timing-Practice | 8 | 2 |
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---
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## Stage 5: Prose Transcript — Full Conversion
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The corrected SRT was converted into a readable markdown document preserving all 618 blocks of content in flowing prose.
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### Structure
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- ~9,300 words
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- **14 H2 major sections** aligned to genuine topic transitions
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- **24 H3 subsections** for distinct subtopics
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- **24 speaker labels** at every change of speaker (17 Marble, 7 Joseph)
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- **9 italicized active ingredient names** on first mention
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- Source attribution footer with filename and block count
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### Section Architecture
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The H2/H3 structure follows Dr. Marble's own presentation flow:
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1. Introduction
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2. Why Herbicides Fail: Calibration and Application
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3. Pre-emergent Herbicide Timing
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4. Post-emergence Herbicide Timing
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5. Importance of Developing a Program, Not Just Products
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6. Three Steps to Choosing Herbicides
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7. Year-Round Nursery Rotation Plan
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8. Research: Pre-emergent + Post-emergent vs. Post-Only Programs
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9. Application Interval Considerations
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10. Landscape-Specific Rotation Planning
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11. Post-emergence Alternatives to Glyphosate in Landscape Beds
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12. Selective Post-emergence Options for Landscape Beds
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13. UF Mid-Florida REC Resources and Contact Information
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14. Questions and Answers (with H3 subheaders for each Q&A topic)
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---
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## Presentation Content Overview
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For team members unfamiliar with this webinar, here's what Dr. Marble covered:
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Dr. Marble presented a comprehensive, practical guide to building herbicide programs for ornamental nursery production and landscape maintenance. He began with **calibration** — identifying it as the #1 cause of herbicide failure and sharing free UF-developed calculators. He then covered **herbicide timing** for both pre-emergent (apply after soil settles, avoid tender new growth, reapply every 8–12 weeks in nurseries vs. 2–3 times/year in landscapes) and post-emergence applications (treat small, actively growing weeds; morning applications on clear days perform best).
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The core of the presentation was a **three-step herbicide selection process**: (1) determine what's labeled/safe for the ornamental, (2) identify primary and secondary weed species by season, and (3) combine into a year-round rotation using different modes of action. He walked through this using **container-grown gardenia** as an example, referencing the **2017 Southeast Pest Control Guide** (compiled by Marble, Jeff Derr, and Joe Neal) for efficacy and safety ratings.
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He presented **research showing that combining pre-emergent with post-emergence herbicides** reduced total herbicide active ingredient by 40–60% and costs by up to 30% versus post-only programs. He reviewed **glyphosate alternatives** (glufosinate, desiccant-type products like Axxe, Finalsan, FireWorxx) and highlighted **underutilized selective herbicides** — particularly graminicides (Segment, Envoy, Fusilade, Acclaim) that can be applied over the top of hundreds of broadleaf ornamentals.
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The Q&A covered signal words/PPE requirements, drift reduction strategies, and Marengo use in nursery gravel areas.
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---
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## Notes for Team
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- **New speaker:** Dr. Chris Marble should be added to the reference roster for future processing
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- **New correction patterns:** 14+ new Whisper error patterns documented in the correction summary — useful for future weed science transcripts
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- **Broad CEU applicability:** This session carries 8 CEU categories, making it a strong candidate for cross-disciplinary certificate courses
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- **Stage 6 not completed:** No publication project was identified for this webinar. The prose transcript is available if collaborative writing resources are needed later
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---
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*Processing completed February 27, 2026*
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*Pipeline: Stages 1–5 (standard archive + prose transcript)*
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*Project: GTBOP Webinar Archive Processing (v4.0 instructions)*
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