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| Publication Type:
| Refereed |
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| Author(s): | Carrow, Robert N.;
Johnson, B. Jack |
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| Author Affiliation: | Department of Agronomy, University of Georgia, Griffin, Georgia |
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| Title: | Frequency of iron application influences bermudagrass tolerance to herbicides |
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| Source: | Journal of Environmental Horticulture. Vol. 10, No. 4, December 1992, p. 228-231. |
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| Publishing Information: | Washington, DC: Horticultural Research Institute |
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| # of Pages: | 4 |
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| Keywords: | TIC Keywords: Cynodon; Postemergence herbicides; Weed control; MSMA; Iron; Herbicide combinations; Quality evaluation; Herbicide resistance; Herbicide injury; Imazaquin; Color enhancement; Application rates; Application frequency
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| Cultivar Names: | Tifway |
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| Abstract/Contents: | "Postemergence herbicides used for weed control in bermudagrasses (Cynodon ssp.) often cause turf injury. A field experiment was initiated to determine the effect of multiple foliar-iron (Fe) applications for reducing injury from postemergence herbicides on 'Tifway' bermudagrass [C. transvaalensis Burtt-Davy x C. dactylon (L.) Pers.]. Iron was applied at 1 to 4 applications at 1.12 kg Fe/ha (1.0 lb/A) per treatment on a 4-day interval. Herbicides were applied at recommended rates. When bermudagrass was treated with either Image (Imagzaquin), {2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-im idazol-2-y1]-3-quinolinecarboxylic acid}, MSMA (monosodium salt of MAA), and MSMA plus Image or Sencor (Metribuzin), [4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazi n-5(4H)-one], 2 Fe applications caused only slight turf color improvement compared to 1 Fe. Three Fe applications compared to 1 Fe, however, significantly enhanced turf color by 1 to 10% in combination with all herbicides for 16 to 26 days after initial treatment. The 4 Fe treatment provided only minor improvement in degree of color or duration of color response versus 3 Fe. Iron did not influence any shoot density loss caused by herbicides. On high-maintenance turf where discoloration is objectionable, the use of multiple Fe applications would be feasible for reducing herbicide-induced color loss." |
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| Language: | English |
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| References: | 7 |
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| Note: | Includes intepretive abstract "Significance to the nursery industry", p. 186
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Carrow, R. N., and B. J. Johnson. 1992. Frequency of iron application influences bermudagrass tolerance to herbicides. J. Environ. Hortic. 10(4):p. 228-231. |
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