Comparison of Experimental Strategies to Control Torpedograss
Studies were conducted to evaluate whether the herbicideimazapyr or a combination of imazapyr and fluridone couldbe used effectively to control torpedograss (Panicum repensL.), an exotic perennial plant that has replaced more than6,000 ha of native vegetation and degraded quality wildlifehabitat in Lake Okeechobee, Florida. Torpedograss was controlledfor more than one year in some areas following a singleaerial treatment using 0.56, 0.84, or 1.12 kg acidequivalents (ae) imazapyr/ha. Combining imazapyr and fluridonedid not increase the level of torpedograss control. Inareas where plant biomass was reduced by fire prior to beingtreated with 0.84 or 1.12 kg ae imazapyr/ha, torpedograsswas controlled for more than two years and native plant species,including duck potato (Sagittaria lancifoliaL.) and pickerelweed(Pontederia cordataL.) became the dominantvegetation in less than one year. Although torpedograss wascontrolled in some areas, little or no long-term control wasobserved at 16 of the 26 treatment locations. To reduce theuncertainty associated with predicting long-term treatmentaffects, additional studies are needed to determine whetherenvironmental factors such as periphyton mats, plant thatch,hydroperiod and water depth affect treatment efficacy., he
| Main Authors: | , |
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| Format: | article biblioteca |
| Language: | English |
| Published: |
2000
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| Subjects: | Management, Biology, Limnology, Panicum repens, herbicide, imazapyr, fluridone, Lake Okeechobee, burning, torpedograss, invasive aquatic plants, |
| Online Access: | http://hdl.handle.net/1834/19677 |
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