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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Kelly, S. T.;
Coats, G. E. |
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| Author Affiliation: | Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS 39762 |
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| Title: | Weed control in warm-season turfgrass with quinclorac |
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| Section: | Weed management in turf, pastures and rangeland
Other records with the "Weed management in turf, pastures and rangeland" Section
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| Meeting Info.: | 52nd Annual Meeting, Greensboro, NC, January 25-27, 1999 |
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| Source: | Southern Weed Science Society Proceedings. Vol. 52, 1999, p. 69-70. |
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| Publishing Information: | Champaign, IL: Southern Weed Science Society. |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Herbicide evaluation; Weed control; Quinclorac; Warm season turfgrasses; Digitaria ciliaris; Tank mix; Postemergence herbicides; Dithiopyr; MSMA; Application rates; Application timing; 2,4-D; Taraxacum officinale; Diodia virginiana; Soliva sessilis; Preemergence herbicides; Crabgrass control; Pendimethalin
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| Abstract/Contents: | "Field experiments were conducted in 1997 and 1998 to evaluate quinclorac for weed control in warm-season turfgrass. These experiments included: evaluating the effect of additives on efficacy of quinclorac on southern crabgrass [Digitaria ciliaris (Retz.) Koel.], the effect of tank-mixing quinclorac with BAS 635 OOH, PRE control of southern crabgrass, or POST control of southern crabgrass with dithiopyr+ quinclorac combinations. Quiclorac (0.5 lb ai/A) was evaluated in combination with: BAS 0902S, BAS 904 07S, BAS 904 08S, BAS 904 09S, Sunit II, Frigate, Dyne-Amic, or Tween 80. These treatments were compared to a split application of MSMA (1.5 lb ai/A followed by 1.5 lb/A 7 days after the initial treatments [DAIT]). Data collected at 21 DAIT indicated that all additives had a similar effect on quinclorac efficacy on southern crabgrass. Southern crabgrass conrol at 35 DAIT was 18 to 43% with quinclorac while the MSMA standard controlled crabgrass 68%. BAS 635 OOH (0.036, 0.044, or 0.054 lb i/A) was evaluated in combination with quinclorac (0.5 lb/A) or 2,4-D (1.0 lb ae/A) on dandelion (Taraxacum officinale Weber in Wiggiers), Virginia buttonweed (Diodia virginiana L.) and lawn burweed [Soliva pterosperma (Juss.) Less]. BAS 635 OOH alone controlled dandelion less than 60% at 33 days after treatment (DAT). Both quinclorac and 2,4-D controlled dandelion at least 85%. Virginia buttonweed control was less than 15% with BAS 635 OOH alone, 53% with quinclorac alone and 80% with 2,4-D. Lawn burweed control was 25% or less with any herbicide or combination except 0.054 lb/A BAS OOH (60%). Combining BAS 635 with quinclorac or 2,4-D did not increase control of these weed species over either herbicide alone. A combination of 0.38 lb ai/A dithiopyr + 1.5 lb/A quinclorac on a fertilizer granule (18-2-7, N-P-K) was applied to southern crabgrass at 2 to 3-leaf or 2 to 4-tiller growht stages and compared to 0.38 lb/A dithiopyr on fertilizer carrier (40-0-0, N-P-K) or a split application MSMA as mentioned previously. When applied to 2 to 3-leaf southern crabgrass, dithiopyr alone or two applications of MSMA provided at least 80% control. However, if applied to 2 to 4 -tiller southern crabgrass, the dithiopyr + quinclorac combination controlled southern crabgrass equivalent to two applications of MSMA. Two formulations of quiclorac (75 DF or 0.57 G) were evaluated for PRE efficacy on southern crabgrass. Both formulations were evaluated at 0.5 or 0.75 lb/A and compared to 1.5 lb ai/A pendimethalin. Treatments were applied prior to southern crabgrass emergence and evaluated through mid September. From 77 to 160 DAT, either formulation of quinclorac controlled southern crabgrass equivalent to the pendimethalin standard." |
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| Language: | English |
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| References: | 0 |
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| See Also: | Other items relating to: M S M A
Other items relating to: 2, 4 - D in Turf |
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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):
Kelly, S. T., and G. E. Coats. 1999. Weed control in warm-season turfgrass with quinclorac. South. Weed Sci. Soc. Proc. 52:p. 69-70. |
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MSU catalog number: SB 611 .S6 v.52 |
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