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| Publication Type:
| Report |
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| Author(s): | Smith, F. E.;
Coats, G. E. |
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| Author Affiliation: | Mississippi State University, Mississippi State, MS 39762 |
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| Title: | Response of hybrid bermudagrass (Cynodon dactylon X C. transvaalensis Burtt-Davy 'Tifway') to the continued use of pre herbicides |
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| Meeting Info.: | 48th Annual Meeting, Memphis, TN, January 16-18, 1995 |
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| Source: | Southern Weed Science Society Proceedings. Vol. 48, January 1995, p. 98-99. |
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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: Cynodon dactylon; Herbicides; Poa annua
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| Abstract/Contents: | "Experiments were conducted in 1993 and 1994 to evaluate the response of 'Tifway' bermudagrass to 5 or 6 years continuous use of PRE herbicides. Herbicide treatments included 3.0 or 1.5 followed by (FB) 1.5 lb ai/A oxadiazon, oryzalin or pendimethalin, 1.5 or 0.75 FB 0.75 lb ai/A prodiamine and 0.75 or 0.375 lb ai/A dithiopyr. Single or the initial of split applications were applied in March of each year with sequential applications applied 2 months after initial treatment (MAIT). Plots were clipped with a reel mower and clippings were weighted to determine shoot growth. Tensile strength was determined by removing sod strips from the field and determining the amount of tension needed to break the strip apart. Sod regrowth was measured where the sod strip was removed. A template with strings forming inch squares was placed on top of the strip and at weekly intervals the squares which contained green leaves were counted. Root regrowth was obtain by growing out sod plugs on sand and then weighing the harvested roots after a 3 week period. Density was determined by visual ratings of each plot to determine the percentage of green and dormant bermudagrass. There were no differences in root regrowth between herbicides or application methods compared to the untreated. Differences were observed between years and sample times for both fresh and dry weights. Both weights were higher when sampled in May versus March or September in both 1993 and 1994. Sod tensile strength revealed no differences between sampling time, herbicides, or application method (single vs sequential). However, differences were observed between years, with sod tensile strength higher in 1994 than in 1993. There were no differences in bermudagrass density between herbicides, application method, or years at any evaluation date. No consistent differences between herbicides or application methods (single vs split) were noted for sod regrowth at any sampling date in either year. There were no reductions in clipping weight between herbicides or application methods in either year. Total root length showed no differences between sampling time, herbicide or application method in either year. No differences were detected in rhizome length when averaged over 2 years. In evaluating the 1993 and 1994 data, there were no consistent differences noted for any samples taken. There were no apparent detrimental effects of 5 or 6 hears continuous use of any PRE herbicide on a mature stand of hybrid bermudagrass." |
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| Language: | English |
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| References: | 0 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Smith, F. E., and G. E. Coats. 1995. Response of hybrid bermudagrass (Cynodon dactylon X C. transvaalensis Burtt-Davy 'Tifway') to the continued use of pre herbicides. South. Weed Sci. Soc. Proc. 48:p. 98-99. |
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MSU catalog number: SB 611 .S6 v.48 |
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