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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Stroman, P. J.;
Whitwell, T.;
Kalmowitz, K. E. |
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| Author Affiliation: | Stroman and Whitwell: Department of Horticulture, Clemson University, Clemson, SC; Kalmowitz: American Cyanamid Co., Columbia, SC |
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| Title: | Turf species tolerance to imazameth (AC 263,222) |
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| Section: | Papers and Abstracts Presented
Other records with the "Papers and Abstracts Presented" Section
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| Meeting Info.: | 49th Annual Meeting, Charlotte, NC, January 15-17, 1996 |
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| Source: | Southern Weed Science Society Proceedings. Vol. 49, 1996, p. 67-68. |
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| Publishing Information: | Champaign, IL: Southern Weed Science Society. |
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| # of Pages: | 2 |
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| Abstract/Contents: | "A preliminary screening to warm season turf species was conducted for selectivity to imazameth (AC 263, 222, PLATEAU). Five turf species were treated with post applications of PLATEAU at four rates. PLATEAU at 0.094, 0.125, 0.156, and 0.188 lb ai/A were applied with 0.25 (%v/v) of INDUCE. PLATEAU also was applied at 0.156 lb ai/A with 0.75 qt/A of Sun-It II to examine turf sensitivity to crop oil. All herbicides were applied in a spray volume of 44 gpa at 54 psi. with a CO₂ back-pack sprayer. Applications were made to turf plots at Super Sod Turf Farm, Orangeburg, SC, on June 09, 1995. Turf species tested were centipedegrass (Eremochloa ophiuroides), Tifway '419' bermudagrass (Cynodon transvaalensis Burtt x C. dactylon (L.) Pres.), Emerald zoysia grass (Zoysia japonica Steud.), Meyer Zoysia grass (Zoysia japonica Steud.), and Mercedes St. Augustinegrass (Stenotaphrum secundatum). For this initial screening all grasses were in the rapidly expanding, runner-formation, growth stage. To determine turfgrass tolerance quality (1-9) which includes color ratings, and turf density (and percent growth reduction) were determined at 2, 7, and 9 weeks after treatment (WAT) for each turf species. All treatments were replicated four times and the experimental design was RCBD, for each turf species. Emerald zoysia grass across all rates and rating periods demonstrated turfgrass quality (>7.4) comparable to the untreated controls. By 9 WAT centipedegrass and Meyer zoysia grass, recovered from injury, regaining turf quality (>7.0) at all rates of PLATEAU with differences from the untreated controls. Tifway '419' bermudagrass and Mercedes St. Augustine generally were injured at all rates and all evaluation periods. At 9 WAT only those plots of both grasses, treated with the low rate of PLATEAU, 0.094 lb ai/A, had turf quality (>6.0) comparable to '419' untreated 8.5, and 'Mercedes' untreated 6.5 ratings. Density of centipedegrass and St. Augustinegrass increased at the 0.094 and 0.125 lb ai/A rates as compared to the untreated plots. With both of these grasses weed control from imazameth may have contributed to the increased stands, where lack of weed control in the untreated plots restricted sod growth. Sod density of Meyer zoysia grass treated plots were similar to the untreated controls. By 7 and 9 WAT Emerald zoysia grass and Tifway '419' bermudagrass density were reduced by any PLATEAU application. Turf density differences and growth reduction were noted for all turfgrass and would indicate that applications of PLATEAU at these rates, to this growth stage, would be detrimental to establishing swards of warm season grasses." |
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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):
Stroman, P. J., T. Whitwell, and K. E. Kalmowitz. 1996. Turf species tolerance to imazameth (AC 263,222). South. Weed Sci. Soc. Proc. 49:p. 67-68. |
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MSU catalog number: SB 611 .S6 |
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