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| Publication Type:
| Report |
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| Author(s): | Witt, William W.;
Martin, James R.;
Slack, Charles H. |
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| Author Affiliation: | University of Kentucky, Lexington, KY 40546 |
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| Title: | Corn weed management in a tall fescue sod |
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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. 89. |
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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: Festuca arundinacea; Glyphosate; Herbicides; Atrazine; Panicum; Anilazine
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| Abstract/Contents: | "Tall fescue (Festuca arundinaceae Schreb.) was planted into much of the Conservation Reserve Program acreage throughout the mid-South. It was the species of choice because of its ability to establish quickly and provide an excellent ground cover to prevent soil erosion. Within the next few years, some of the acreage will go into production as the current CRP program ends. Most of the acreage taken out of production in Kentucky and surrounding states is subject to erosion from the frequently intense storms encountered during the Spring. Therefore, as these fields go back into production, it is desirable to utilize conservation tillage practices, such as no-tillage, to establish the desired crop in these fields. While control of tall fescue is relatively easy, consideration of other items must be considered. Weed present in much of CRP land may be difficult to control in a growing crop. Species such as brambles, trumpetcreeper, and small trees are a possibility. These species may be easier to control before planting the crop. The use of multiple herbicides and multiple applications may also be needed. Mowing is also an option that should be considered. A primary tillage operation might be useful from a weed management standpoint, but since most of the CRP acreage is erodible, tillage would be suggested only in rare cases. No-tillage corn production into tall fescue sod has been practiced in Kentucky for over 30 years. Atrazine at 1.5 lb ai/a plus simazine 1.5 lb ai/a plus paraquat at 0.25 lb ai/a plus a nonionic surfactant has been the grower standard and provides 100% control of the tall fescue sod and greater than 85% of giant foxtail, smooth pigweed and most other small seeded annual species. More recently, combinations of atrazine plus alachlor or metolachlor have been used where fall panicum was a problem. In the past two years, we have compared low rates of glyphosate to paraquat in combination with various residual herbicides. Glyphosate at 1.5 lb ai/a and paraquat at 0.25 to 0.5 lb ai/a give comparable control of the tall fescue when combined with atrazine. The addition of ammonium sulfate increased tall fescue control when the glyphosate rate was less than 1.5 lb ai/a. Optimum tall fescue control can be obtained with paraquat of glyphosate combined with atrazine. Our results over the years have shown that artazine, or another triazine, is needed to provide consistent tall fescue control. It is our opinion that corn would be the crop of choice in most of the CRP fields since corn can be established under no-tillage conditions and has been shown to provide yields equal to those obtained under tilled conditions." |
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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):
Witt, W. W., J. R. Martin, and C. H. Slack. 1995. Corn weed management in a tall fescue sod. South. Weed Sci. Soc. Proc. 48:p. 89. |
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MSU catalog number: SB 611 .S6 v.48 |
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