Presentation on theme: "Herbicide Control of Lygodium microphyllum Jeff Hutchinson and Dr. Ken Langeland University of Florida, Department of Agronomy Center for Aquatic and Invasive."— Presentation transcript:
Herbicide Control of Lygodium microphyllum Jeff Hutchinson and Dr. Ken Langeland University of Florida, Department of Agronomy Center for Aquatic and Invasive Plants EISS 2007
Site Dependent Wet (water present) 1) Glyphosate 2) Triclopyr Dry (no water present) 1) Metsulfuron methyl 2) Imazapic NOTES: 1) Refer to label prior to herbicide application 2) Use 0.5% non-ionic surfactant (v/v) with all herbicides and mixtures
RATES GroundAerial High VolumeLow Volume Glyphosate1-3% product3.75-7.5 pt / 20 gal Triclopyr1-2% productN/A Imazapic0.75-1.5 % productN/A Metsulfuron2 oz / 100 gal2 oz / 20 gal
Tank Mixes For heavy infestations, tank mixes should not exceed 4% total products. For light to medium infestations, tank mixes should not exceed 2% total products. Need to take into account ca. density of native plants at treatment site.
Rotation and Tank Mixes of Herbicides Resistance prevention Metsulfuron Imazapic Imazapyr Imazamox Metsulfuron Imazapic Imazapyr Imazamox Glyphosate Triclopyr
Non-Target Damage Expect non-target damage - Depends on Lygodium density Native ferns Rare plants
Conclusions 1.Herbicides (glyphosate, metsulfuron methyl, triclopyr, and imazapic) are effective 2.Tank mixes of these herbicides are acceptable, but lower rates should be used in areas of lower infestations 3.Non-target damage will be unavoidable 4.Regardless of the herbicide or herbicides used, re-treatment will likely be required