Presentation on theme: "Mechanical Removal TAME Melaleuca François B. Laroche South Florida Water Management District."— Presentation transcript:
Mechanical Removal TAME Melaleuca François B. Laroche South Florida Water Management District
Melaleuca Control Mechanical removal not used for melaleuca removal in natural areas. Land clearing for development, along canals, roadside, utilities ROW. Cell 17/18, comparison of herbicide and mechanical methods TAME demonstration project Melaleuca control in natural areas traditionally done with herbicide treatment methods.
Tracked Feller Buncher Cutting Trees (Cell 17/ ) Cell 17/18 Cutting head mounted on hydraulic arm Better maneuverability Holiday Park and Prairie Pines demonstration sites Cutting head mounted on front of vehicle.
Tracked Feller Buncher Spraying Stumps (Cell 17/ ) Treated Stump Spraying Cutting head mounted with herbicide sprayer Gyro Track for smaller trees and saplings
CELL 17/18 Frill /Girdle/Cut/stump herbicide treatment, 3 years later 95% mortality Follow-up retreatment for seedlings Stumps and trunks remain Feller Buncher/Gyrotrack/ Skider/Chipper, 3 years later 90 – 95% mortality. Follow-up retreatment for seedlings
Clear-More Tree Chipper Stumper Knocking Down Trees (Cell 17/18) High selectivity and maneuverability, little non-target damage and no melaleuca left standing Separate motor for chipping head Grinds stumps into the ground 99% mortality 0 seedling recruitment Slow when trees are dense
Clear-More Tree Chipper After Treatment (Cell 17/18) Natives Ground Rutting 3 years later Days after Ground Rutting
Cell 17/18 Aerial herbicide treatment, 3 years later 99% mortality 0 seedling recruitment Follow-up treatment needed Dead trees remain standing (10 year + for decay)
Feller BuncherManual Herbicide Clearmore Chipper Aerial Herbicide Acres Treated Total Cost $99,400$70,199.53$75,190$51, Cost/Acre $2,651$1,823$3,760$286 Cost/Biomass $48$40$67N/A Cost/Plant $0.19$0.08$0.22N/A Labor/equipment cost/acre N/A$1068N/A$60 Herbicide cost/acre N/A$755N/A$226 Time to completion 120 days21 days160 days2 days Melaleuca Control Cost by Various Methods of Treatment at Cell 17/18
Tracked Feller Buncher Cutting Trees, (TAME) Restricted to certain trunk diameter Need second pass for small trees Somewhat selective Treat stumps with herbicide 90% mortality some seedlings, 0.3/m 2 65% mortality some seedlings, 1.3/m 2 Holiday Park Prairie Pines Prairie Pines Preserve, Lee Co. Holiday Park, Broward Co.
Brontosaurus, Holiday Park and Prairie Pines (TAME) 2004 Little non-target damage and few melaleuca left standing Able to take down large trees Separate motor for chipping head High selectivity and maneuverability Does not grind stumps Prairie Pines Holiday Park
Brontosaurus, Holiday Park and Prairie Pines (TAME) % mortality 0 seedling recruitment Mortality greater (less regrowth) where trees were larger or denser and mulch is therefore deeper 50 % mortality some seedlings, 0.7/m 2 Holiday Park Prairie Pines Holiday Park Prairie Pines
Stump regrowth Few seedlings Brontosaurus, Holiday Park and Prairie Pines (TAME) 2006 Prairie Pines Holiday Park
Barko Chipper, Holiday Park and Prairie Pines (TAME) 2004 Coarse mulch, some stems/trunks missed by chipper once down Rubber tires Low selectivity, cannot maneuver well around natives Prairie Pines Holiday Park
Barko Chipper, Holiday Park and Prairie Pines (TAME) % mortality Seedling recruitment 3/m 2 60% mortality Damage to pine Seedling recruitment 0.7/m2 Holiday Park Prairie Pines
Barko Chipper, Holiday Park and Prairie Pines (TAME) 2006 Holiday Park Prairie Pines Stump regrowth Few seedlings
Stump Regrowth Brontosaurus Barko No regrowth with Feller Buncher
Brontosaurus Feller Buncher HerbicideBarko Chipper Acres Treated Total Cost $9,740$9,980$10,000 Cost/Acre $2,029$2,079$2,000 Herbicide cost/acre N/A$38N/A Labor Hours N/A23N/A Mechanical Removal of Melaleuca at Prairie Pines (TAME)
Mechanical Removal of Melaleuca at Holiday Park (TAME) Brontosaurus Feller Buncher Herbicide Barko Chipper Acres Treated Total Cost $7,030$9,103$9,900 Cost/Acre $2,211$1,990$2,475 Herbicide cost/acre N/A$29N/A Labor Hours N/A16N/A
Follow up treatment required Seedling recruitment Other exotics Need herbicide and follow-up treatment Restricted (wetland areas) Not selective (under story) Tracks create rutting Costly Instant results Many types of equipment