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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Mullahey, J. J. |
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| Author Affiliation: | West Florida Research and Education Center, Milton, FL |
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| Title: | Weed control using a mower-herbicide applicator |
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| Section: | Section II: Weed management in turf, pasture, and rangeland
Other records with the "Section II: Weed management in turf, pasture, and rangeland" Section
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| Meeting Info.: | 54th Annual Meeting, Biloxi, Mississippi: January 22-24, 2001 |
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| Source: | Southern Weed Science Society Proceedings. Vol. 54, 2001, p. 64. |
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| Publishing Information: | Champaign, IL: Southern Weed Science Society. |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Weed control; Melaleuca quinquenervia; Herbicides; Equipment; Mowers; Application rates; Application methods; Imazapyr; Triclopyr; Dicamba; Herbicide combinations; Visual evaluation
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| Trade Names: | Arsenal; Garlon; Vanquish; Burch Wet Blade |
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| Geographic Terms: | Florida |
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| Abstract/Contents: | "Melaleuca (Melaleuca quinquenervia) is an invasive non-native plant that has become a serious weed problem in natural areas throughout southern Florida. Melaleuca displaces native vegetation resulting in lower biodiversity. Chemical control consists of aerial applications for extensive acreage while treating individual trees controls satellite populations. With chemical control, repeated applications are needed to control escape plants and new plants from seed. Wax myrtle (Myrica cerifera) is a native shrub that invades into south Florida pasture, especially on wet soils where they can form dense monocultures and eliminate bahiagrass production (Kalmbacher and Egar, 1989). Wax myrtle is contained through mowing, chopping, and burning when myrtles are 4-6 feet tall (2-4 years). Chemical control using Remedy (1qt/a) applied in August resulted in 71% control of myrtles greater than 2 feet tall (Kalmabacher and Egar, 1989). Treating myrtles during the late summer months provided the best control. A mower-herbicide applicator combines two weed management practices into one application. Two studies were conducted to evaluate the effect of selected herbicides applied using a Burch Wet Blade (BWB) mower-herbicide applicator on the control of Melaleuca and Wax Myrtle. Both studies were a split plot design with 4 replications conducted in 1998 and repeated in 1999. Wax myrtle that averaged 3 ft tall was treated in September with selected herbicides (Arsenal 1 pt/a + Garlon 3A 2qt/a; Vanquish 1 qt/a + 2 qt/a; Garlon 3A at 0.5, 1.0, and 1.5 lb/a; Vanquish 2 qt/a; Arsenal 1 qt/a; and mowing without herbicide) using the BWB or as a broadcast spray application. Wax myrtle control was calculated based on the number of plants per plot and plant height was measured at 3, 6, and 12 MAT. Plant height at 12 MAT was consistently shorter when the herbicides were applied using the BWB compared to the broadcast spray application. For the BWB method, all herbicide treated plants were lower in height than the mow only treatment (2.35 ft). Chemical control of wax myrtle was generally higher when the herbicides were sprayed compared to the BWB method. For the broadcast spray application, the highest control (81%) resulted from the highest rate of Garlon 3A followed by the Vanquish + Garlon 3A mix (78%). Highest control with the BWB was from the Arsenal 1 qt/a treatment (64%) followed by Vanquish 2 qt/a (51%) compared to mowing alone (14%). Regardless of treatment method, repeated herbicide applications will be necessary to control wax myrtle. However, the BWB does have the added advantage of removing (mowing) the standing plant material resulting in faster regrowth from the bahiagrass which results in more grazing time. Melaleuca (6-9 ft tall) sapling trees were treated in October with five rates of Arsenal (0, 2.5%, 5%, 10%, and 20%) using the BWB mower (2.5 gallons/a) or as a cut stem method. Melaleuca control was measured by visually comparing the control from each herbicide treated plot to the mow only plots at 6 and 12 MAT. Chemical control of Melaleuca was consistently higher when applied using the BWB mower. Control values increased with higher rates of Arsenal. For the BWB mowr, 90-100% control resulted when using an Arsenal rate of 5% or higher. With the cut stem method, similar control to the BWB occurred from the different rates of Arsenal but only in 1999. The cut stem method is labor intensive and not practical for controlling young Melaleuca trees in natural areas. A 5% Arsenal solution (1 pt/a) applied using the BWB mower should be considered by land managers for successful control of young Melaleuca trees." |
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| Language: | English |
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| References: | 1 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Mullahey, J. J. 2001. Weed control using a mower-herbicide applicator. South. Weed Sci. Soc. Proc. 54:p. 64. |
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MSU catalog number: SB 611 .S6 v.54 |
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