Full TGIF Record # 63259
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Publication Type:
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Content Type:Abstract or Summary only
Author(s):Hipkins, P. L.
Author Affiliation:Department of plant pathology, physiology and weed science, Virginia polytechnic institute and State University, Blacksburg, VA 24061
Title:Weed control in rough turf with a combination mower-herbicide applicator
Section:Vegetation management in utility, rairoad and highway right-of-ways, and on idustrial sites
Other records with the "Vegetation management in utility, rairoad and highway right-of-ways, and on idustrial sites" Section
Meeting Info.:52nd Annual Meeting, Greensboro, NC, January 25-27, 1999
Source:Southern Weed Science Society Proceedings. Vol. 52, 1999, p. 149-150.
Publishing Information:Champaign, IL: Southern Weed Science Society.
# of Pages:2
Keywords:TIC Keywords: Weed control; Mowing; Herbicides; Fertilizers; Low maintenance; Cool season turfgrasses; Poa pratensis; Festuca arundinacea; Application rates; Triclopyr; Tank mix; Clopyralid; Picloram; Dicamba; Cirsium vulgare; Solanum; Trifolium repens; Cyperus esculentus; Halosulfuron; Bentazon
Abstract/Contents:"A combination mower-herbicide applicator was evaluated for use as an ultra-low volume device for weed control in low maintenance turf and as a fertilizer applicator. Trials were established in 1997 and 1998 on mixed cool season turf as well as bluegrass (Poa pratensis) and turf type tall fescue (Festuca arundinacea). Products were applied at 28 L ha⁻¹ total solution. Triclopyr amine alone (0.84 Kg ha⁻¹) and tank mixed with clopyralid (0.084, 0.168, and 0.336 Kg ha⁻¹) or picloram (0.062, 0.112, and 0.224 Kg ha⁻¹) as well as dicamba (diglycolamine) alone (0.56 and 1.121 Kg ha⁻¹) and tank mixed with triclopyramine (1.121 Kg ha⁻¹) and clopyralid (0.157 Kg ha⁻¹) provided excellent control of bull thistle (Cirsium vulgare) at 4 weeks after treatment (WAT). At 12 WAT all treatments continued excellent control except for the dicamba plus clopyralid which was fair (80%), the triclopyr alone and with picloram (0.84 pkus 0.112 Kg ha⁻¹ which was poor (67%) and the dicamba alone (0.56 Kg ha⁻¹) and with triclopyr (17% and O respectively). None of these treatments gave adequate control of horsenettle (Solanum carolinense), though triclopyr plus clopyralid (0.84+0.168 Kg ha⁻¹) was fair (77%), nor white clover (Trifolium repens). It is possible that the clover was too short to be adequately mowed thus leaving it untreated. Subsequent treatments in 1998 using the same products as well as metsulfuron methyl showed that only clopyralid (0.210, 0.420, and 0.840 Kg ha⁻¹) could provide fair to good control of horsenettle (73-87%) at 10 WAT. Yellow nutsedge (Cyperus esculentus) plots were established in August, 1998 to determine if the same methodoloy could be used to apply halosulfuron and bentazon. Treatments were applied with both the mower and a bicycle sprayer (280.6 L ha⁻¹). Halosulfuron was applied at 0.035 and 0.069 Kg ha⁻¹ while the bentazon was applied at 1.12 and 2.24 Kg ha⁻¹. Bentazon gave excellent control (98-100%) 5 WAT at both rates when applied with the mower and at the high rate when applied with the sprayer. Halosulfuron treatments were fair to good (50-83%) at the 0.035 and 0.069 Kg ha⁻¹ when applied with the mower and fair at the high rate (65%) when sprayed. Liquid fertilizer (30%N) was applied to turf type tall fescue over intervals of 4 weeks, 2 weeks, and 1 week using the wet blade mower and compared to urea which was dissolved in water and applied with a sprayer (280.6 L ha⁻¹) at the same total Nitrogen (7.06 Kg ha⁻¹). Ratings for quality were made weekly on a 1 to 9 scale with 5 and above being acceptable and better. At 5 WAT all ratings (7.0-7.7) were better than the check (6.7) but only the weekly application of the liquid fertilizer (7.7) was significantly (0.05) superior to the check. At 10 WAT, the bi-weekly and weekly applications of the liquid fertilizer and the weekly application of dissolved urea (7.3, 7.7, and 8.0) were significantly better than the check (7.0). Clippings were collected and weighed at 5 and 10 weeks. There was no significant difference in any clipping weights at 5 weeks. At 10 weeks, all treatments except urea every 4 weeks (105 g) was significantly superior to the check (88g). The biweekly and weekly applications of the liquid fertilizer (162g and 152g, respectively) were significantly better than any treatment except the weekly application of dissolved urea (145g)."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hipkins, P. L. 1999. Weed control in rough turf with a combination mower-herbicide applicator. South. Weed Sci. Soc. Proc. 52:p. 149-150.
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