Aquatic Plant Control - Helena Products - APWA CFB Lunch and Learn

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APWA CFB Lunch and Learn - Aquatic Plant Control - Helena Products

APWA CFB Lunch and Learn - Aquatic Plant Control - Helena Products

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  • 1. Chance DuBose
  • 2. Leading The Way Helena: Aquatic Plant Control 101 Chance DuBose, Tim McDuffie IVM Account Manager’s James Boggs Jr., Branch Manager, Florida IVM
  • 3. Leading The Way Presentation Outline (Approximately) • Introduction • Types of Aquatic Plants (Know your enemy) • Control Methods (IPM/BMPs) • Herbicide Application Techniques • Herbicides Available for Aquatic Use • Special Considerations for Aquatic Treatments • Reference Material • Questions and Answers Aquatic Weeds
  • 4. Leading The Way INTRODUCTION Aquatic Weeds 4.1.4 Aquatic Food Chain or Energy Pyramid
  • 5. Leading The Way INTRODUCTION Aquatic Weeds 4.1.5 For the purpose of this discussion aquatic weeds (plants) can be categorized as: Algae Floating Plants Submersed (Submerged) – under water Emersed (Emergent) – above water
  • 6. Leading The Way INTRODUCTION Aquatic Weeds 4.1.6
  • 7. Leading The Way ALGAE Aquatic Weeds 4.1.7 PLANKTONIC ALGAE (Unicellular) Suspended in top few feet of water May form undesirable “blooms” Heavy blooms can resemble a paint spill Decaying blooms deplete oxygen in water May release toxins into the water
  • 8. Leading The Way ALGAE Aquatic Weeds 4.1.8 PLANKTONIC ALGAL SCUM Normally a Blue-Green Algae
  • 9. Leading The Way Toxic Algae: St. Johns River Blue-green algae (cyanobacteria) (unicellular or planktonic) Aquatic Weeds
  • 10. Leading The Way ALGAE Aquatic Weeds 4.1.10 FILAMENTOUS ALGAE Always there, as small to microscopic threads Form fur-like mats on submerged surfaces Overabundance causes problems Mats can break free and float
  • 11. Leading The Way LYNGBYA: SPRING’S IN FLORIDA (filamentous) Aquatic Weeds
  • 12. Leading The Way ALGAE Aquatic Weeds 4.1.12 FILAMENTOUS ALGAL MAT- Lyngbya (blue-green algae)
  • 13. Leading The Way HIGHER ALGAE Aquatic Weeds 4.1.13 ATTACHED-ERECTALGAE Resemble higher plants Found in hard (mineral-rich) water Muskgrass and Stonewort Have odor and bristly, gritty feel
  • 14. Leading The Way FLOATING WEEDS Aquatic Weeds 4.1.14 DUCKWEED Tiny to small plants Often mistaken for algae Herbicide- Clipper (Flumioxazine)
  • 15. Leading The Way FLOATING WEEDS Aquatic Weeds 4.1.15 DUCKWEED- Rarely exists alone 4 different floating plants in photo All 4 can reproduce very rapidly High Nutrient load here Control can lead to algal dominated system
  • 16. Leading The Way FLOATING WEEDS Aquatic Weeds 4.1.16 Water Hyacinth INTRODUCED FLOATING WEEDS Origin: Tropical South America Hardball (2,4-D) for control
  • 17. Leading The Way Know your Enemy Example- 2,4-D Controls Hyacinth Aquatic Weeds
  • 18. Leading The Way SUBMERSED WEEDS Aquatic Weeds 4.1.18 PONDWEEDS Appearance varies by species 10 species in US and at least 5 are in Florida Copyright 2000 University of Florida
  • 19. Leading The Way SUBMERSED WEEDS Aquatic Weeds 4.1.19 Hydrilla sp. Introduced Rooted in substrate Tubers Teeth on leaves variable whorls
  • 20. Leading The Way Know your Enemy- Aquathol control Hydrilla sp. Aquatic Weeds
  • 21. Leading The Way EMERSED WEEDS Aquatic Weeds 4.1.21 CATTAILS- Typha spp. Familiar and common Flower Spike like corndog Roots are edible
  • 22. Leading The Way EMERSED WEEDS Aquatic Weeds 4.1.22 CREEPING WATERPRIMROSE Introduced Forms dense mats New Sp. In Kissimmee Chain
  • 23. Leading The Way EMERSED WEEDS Aquatic Weeds 4.1.23 BULRUSHES- Many species, some endangered
  • 24. Leading The Way Know your Enemy Example Aquatic Weeds
  • 25. Leading The Way AQUATIC WEED CONTROL 4.1.25 INTEGRATEDPEST MANAGEMENT (IPM) PREVENTIVE MECHANICAL BIOLOGICAL CHEMICAL Aquatic Weeds
  • 26. Leading The Way PREVENTIVE MEASURES Aquatic Weeds 4.1.26 POND AND DITCH DESIGN FERTILIZATION (ALGAL GROWTH) REDUCE LIGHT (AQUASHADE) DRAINING AND DRYING
  • 27. Leading The Way AQUATIC WEED CONTROL Aquatic Weeds 4.1.27 Mechanical Chemical Biological Integrated Pest Management (IPM)
  • 28. Leading The Way MECHANICAL METHODS Aquatic Weeds 4.1.28 CHAINING, DRAGLINE CLEARING MACHINE HARVESTING CHOPPING/MOWING MACHINES HAND SKIMMING
  • 29. Leading The Way MECHANICAL METHODS Aquatic Weeds 4.1.29 MACHINE HARVESTING
  • 30. Leading The Way BIOLOGICAL CONTROLS Aquatic Weeds 4.1.30 TILAPIA INSECTS GRASS CARP Photo – Belinda Hoots
  • 31. Leading The Way BIOLOGICAL CONTROL Aquatic Weeds 4.1.31 Photo – Belinda Hoots “POSTER CHILD” Before 1964 --- After 1965
  • 32. Leading The Way BIOLOGICAL CONTROLS Aquatic Weeds 4.1.32 Photo – Belinda Hoots
  • 33. Leading The Way CHEMICAL CONTROLS Aquatic Weeds 4.1.33 Prefer to use Herbicide instead of Chemical (Most every thing is a chemical) UNDERSTANDAND CARRY OUT ALL LABEL WARNINGS AND DIRECTIONS CORRECTLY IDENTIFY THE TARGET WEED(S) CALCULATE AREA AND VOLUME ACCURATELY- Surface vs. Submersed Treatments
  • 34. Leading The Way HERBICIDE DISPERSAL Aquatic Weeds 4.1.34 FORMULATION AND APPLICATION METHOD Liquid Formulations: Can be surface or sub-surface treatment No sub-surface with aircraft (trailing hoses) Granular Formulations: Can be hand spread, hand-held spreader, with boat or aircraft Granules can be Safer, Specific Placement Normally more expensive and labor intensive
  • 35. Leading The Way HERBICIDE DISPERSAL Aquatic Weeds 4.1.35 Helicopter Liquid and Granular Application
  • 36. Leading The Way HERBICIDE DISPERSAL Aquatic Weeds 4.1.36 Airboat application of granular products
  • 37. Leading The Way DOUBLE SPREADERS Aquatic Weeds
  • 38. Leading The Way SUB-SURFACE LIQUID APPLICATION WEIGHTED TRAILING HOSES OR CAN POSITION JUST ABOVE THE WATER Aquatic Weeds
  • 39. Leading The Way Hoses behind boat to avoid debris and trailing hose configuration Submersed Cont. Aquatic Weeds
  • 40. Leading The Way Surface Applications Aquatic Weeds
  • 41. Leading The Way Originally 7 Aquatic Herbicides Currently 15 Products Registered for use in Florida Aquatic Weeds
  • 42. Leading The Way **ALGAECIDE PRODUCTS** Aquatic Weeds 4.1.42 ACTIVE INGREDIENTS FOR ALGAE-all contactproducts Copper Diquat Endothall (Hydrothol 191) Hydrogen Dioxide Blue Dye (light Attenuation) Preventative Copper sulfatenuggets and crystals
  • 43. Leading The Way CHEMICAL PRODUCTS Aquatic Weeds 4.1.43 FOR FLOATING WEEDS 2,4-D (Organo-auxin) Diquat (Divalent Cation) Endothall (aquathol) Glyphosate (Rodeo™) Carfentrazone-ethyl (PPO)
  • 44. Leading The Way CHEMICAL PRODUCTS Aquatic Weeds 4.1.44 FOR SUBMERSED WEEDS 2,4-D Diquat (photosynthesis& cell membrane) Endothall (unspecified mode of action) Fluridone (Inhibition of phytoene desaturase (pds) enzyme) Carfentrazone-ethyl (PPO inhibitor)
  • 45. Leading The Way CHEMICAL PRODUCTS Aquatic Weeds 4.1.45 FOR EMERSED WEEDS 2,4-D (Amine, Ester, and Acid) Diquat Dibromide Endothall Products Glyphosate (Rodeo™) Carfentrazone-ethyl
  • 46. Leading The Way Newer to Aquatics (Labeled)  Triclopyr (Renovate) (organo-auxin)  Imazapyr- Broad spectrum (ALS Inhibitor)  Carfentrazone-ethyl (Stingray) (PPO Inhibitor) was FMC… Recently picked up by SePRO? Synergistic effects Aquatic Weeds
  • 47. Leading The Way Latest Round of Products Most are Acetolactate Synthase or ALS inhibitors ALS Resistance is almost certain with repetitive treatments Penoxsulam (Galleon) only use limit is irrigation Imazamox (Clearcast)- Selective-no use restriction Good on Taro, Tallow, phrag., Hyacinth, 3-7 d on Hyd. Bispyribac (Tradewind) Slow, but long term contrl Flumioxazin(Clipper) PPO or Protox enzyme inhibitor: protoporphyrinogen oxidase is the enzyme inhibited Following rice and terrestrial trend. Fluridone resistance stimulated look at ALS. Aquatic Weeds
  • 48. Leading The Way ALS Continued: Recent use Pattern Penoxsulam and Endothall are good together Additivity or synergy has been observed Reduce biomass and exposure time requirement **Too early to draw consistent conclusions about increased efficacy and longevity
  • 49. Leading The Way What’s Next In Aquatics??? Grass Control Herbicides- From Researchers Fluazifop or Fusilade II, for one Oasis from SePRO- true bleacher HPPD Triax from SePRO- Copper, Diquat and Fluridone mixed in one product.
  • 50. Leading The Way SPECIAL CONSIDERATIONS Aquatic Treatments Aquatic Weeds 4.1.50 WATER MAY BE… STATIC LIMITED-FLOW MOVING This affects what happens to your treatment
  • 51. Leading The Way SPECIAL CONSIDERATIONS in Aquatic Systems Aquatic Weeds 4.1.51 USE GOOD WORK PRACTICES and PROPER HERBICIDE STEWARDSHIP:the label is the law! Protect ground water by protecting surface water Avoid drift, leaching and run-off Avoid unintentional contamination of water Check for label changes and read and follow the label
  • 52. Leading The Way SPECIAL CONSIDERATIONS in Aquatic Systems Aquatic Weeds 4.1.52 WHAT IS THE WATER USED FOR? There may be many answers The answer(s) will affect your methods and choice of materials Drinking, Swimming, Irrigation, Live Stock etc. THE LABEL WILL WARN YOU ON WHAT TO LOOK FOR
  • 53. Leading The Way SPECIAL CONSIDERATIONS in Aquatic Systems Aquatic Weeds 4.1.53 WHAT ARE THE DOWNSTREAM USES OF THE WATER? Crops could be damaged Salt marshes, estuaries could be impacted/affected Industrial plants could be affected Drinking water supply could be affected
  • 54. Leading The Way DRINKING WATER SUPPLY!! Aquatic Weeds
  • 55. Leading The Way Wekiva River JAX NAS St. Johns River River Water for Domestic Purposes
  • 56. Leading The Way SPECIAL CONSIDERATIONS in Aquatic Systems Aquatic Weeds 4.1.56 LIMITED-AREA APPLICATIONS vs. WHOLE LAKE TREATMENTS **Some Labels Recommend “Split Treatments” Gives fish a safer haven than the treated site Done with low-toxicity applications Less oxygen depletion (hot weather) Good for Thick Infestations
  • 57. Leading The Way Reference Material Aquatic Plants 4.1.57
  • 58. Leading The Way APIS Aquatic Plant Information System (now online)
  • 59. Leading The Way
  • 60. Leading The Way Reference Material WEB Sites Aquatic Weeds 4.1.60 http://www.saj.usace.army.mil/invasive_species/index.htm http://aquat1.ifas.ufl.edu/ie6/index.html http://www.cdms.net/LabelsMsds/LMDefault.aspx?t= http://www.nysaes.cornell.edu/ent/biocontrol/ http://www.fw.umn.edu/research/milfoil/milfoilbc.html http://www.apms.org/ http://www.ces.ncsu.edu/nreos/wild/fisheries/weed_mgt/
  • 61. Leading The Way AQUATIC WEEDS 4.1.61 THE END! Any Question?
  • 62. Chance DuBose407-256-2342 cell dubosec@helenachemical.com