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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Evans, J. R.;
Sciarappa, W. J.;
Harrell, A. L. |
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| Author Affiliation: | BASF Corporation, Research Triangle Park, N.C. |
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| Title: | Quinclorac for weed control during turfgrass establishment |
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| Meeting Info.: | Little Rock, AR; January 21-22, 1992 |
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| Source: | Southern Weed Science Society Proceedings. Vol. 45, January 1992, p. 134. |
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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: Warm season turfgrasses; Cool season turfgrasses; Establishment; Quinclorac; Resistance; Weed control; Digitaria sanguinalis
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| Abstract/Contents: | "A major problem in establishing turfgrasses from seed in the spring or summer is controlling crabgrass. Quinclorac may be able to provide effective crabgrass control in some of the more tolerant turfgrasses. Experiments were conducted in North Carolina and New Jersey to determine a) the tolerance of different turf species during their establishment from seed to quinclorac applications and b) crabgrass control from different application timings of quinclorac. Quinclorac rates in these experiments ranged from 0.5 to 1.0 kg/ha with BAS 090 02S at 2.3 1/ha as adjuvant. Application timings ranged from preemergence to eight weeks after emergence. Experiments were conducted on a sandy loam soil in North Carolina and clay loam in New Jersey. Both soils had low organic matter composition which tends to maximize injury potential. Of the cool season grasses, perennial ryegrass (LOLPE) and tall fescue (FESAR) were more tolerant to quinclorac than bentgrass (AGSTE) or Kentucky bluegrass (POAPR). Postemergence applications of quinclorac produced only slight injury to tall fescue or ryegrass. Generally, less injury occurred as applications were delayed to two weeks or longer after planting. Seeded bentgrass was injured less than expected with applications at one and two weeks after planting reducing stunting but no real stand reduction or discoloration. Kentucky bluegrass tolerated applications of quinclorac at four and eight weeks after emergence. Of the warm season grasses, seeded common bermudagrass (CYNDA) was extremely tolerant and was not injured by quinclorac at rates up to 1.0 kg/ha. Bahiagrass (PASNO) suffered stand reduction from early quinclorac applications but results were not conclusive. Quinclorac rates and timings of application provided good to excellent crabgrass control. Early postemergence applications of quinclorac tended to give crabgrass control superior to that of preemergence applications. Control of crabgrass with multiple tillers was less than crabgrass control at earlier growth stages. Additionally, quinclorac provided excellent control of white clover and yellow foxtail." |
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| Language: | English |
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| References: | 0 |
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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):
Evans, J. R., W. J. Sciarappa, and A. L. Harrell. 1992. Quinclorac for weed control during turfgrass establishment. South. Weed Sci. Soc. Proc. 45:p. 134. |
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MSU catalog number: SB 611 .S6 |
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