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Effect of Tillage and Soil-Applied Herbicides on Broadleaf Signalgrass (Brachiaria platyphylla) Control in Corn (Zea mays)

  • Thomas C. Mueller (a1) and Robert M. Hayes (a1)

Abstract

Broadleaf signalgrass control from preemergence (PRE) herbicides was usually lower in no-till than in tilled plots. Broadleaf signalgrass control was most nearly complete in tilled plots treated with metolachlor in 1995, a year that favored an herbicide with more soil persistence. Broadleaf signalgrass control was most nearly complete in tilled plots treated with acetochlor in 1996, a year in which rainfall to activate the herbicides did not occur until 9 d after planting. The 1996 data indicated that acetochlor was more stable on the soil surface under the drier conditions. There was no difference in broadleaf signalgrass control between the two acetochlor formulations. Alachlor, metolachlor, and dimethenamid controlled broadleaf signalgrass > 80% for about 4 wk, acetochlor provided control for about 4 wk under no-till conditions and about 8 wk in tilled plots, and pendimethalin provided about 2 wk broadleaf signalgrass control. Acetochlor provided consistent control regardless of the rainfall pattern after application.

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References

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Banks, P. A. and Robinson, E. L. 1982. The influence of straw mulch on the soil reception and persistence of metribuzin. Weed Sci. 30:164168.
Buhler, D. D. and Daniel, T. C. 1988. Influence of tillage systems on giant foxtail (Setaria faberi) and velvetleaf (Abutilon theophrasti) density and control in corn (Zea mays). Weed Sci. 36:642647.
Chamblee, R. W., Thompson, L. Jr., and Bunn, T. M. 1982. Management of broadleaf signalgrass (Brachiara platyphylla) in peanuts (Arachis hypogea) with herbicides. Weed Sci. 30:4044.
Devine, M. D., Duke, S. O., and Fedtke, C. 1993. Physiology of Herbicide Action. Englewood Cliffs, NJ: PTR Prentice Hall. 441 p.
Doub, J. Peyton, Wilson, H. P., Mines, T. E., and Hatzios, K. K. 1988. Consecutive annual applications of alachlor and metolachlor to continuous no-till corn. Weed Sci. 36:340344.
Dowler, C. C. 1994. Weed survey—southern stales. Proc. South. Weed Sci. Soc. 47:279284.
Elmore, C. D. Not dated. Broadleaf signalgrass. In Weed Identification Guide. Champaign, IL: Southern Weed Science Society. p. 2-BRAPP.
Johnson, W. C. and Coble, H. D. 1986. Crop rotation and herbicide effects on the population dynamics of two annual grasses. Weed Sci. 34:452456.
Krueger, W. A. and Kirksey, K. B. 1994. Postemergence broadleaf signalgrass control in corn. Proc. South. Weed Sci. Soc. 46:45.
Mueller, T. C., Hayes, R. M., Witt, W. W., Shaw, D. R., and Murphy, G. P. 1996. Relative dissipation of atrazine, alachlor, acetochlor. dimethenamid, and metolachlor in surface soil from field sites in Kentucky, Mississippi, and Tennessee. Proc. South. Weed Sci. Soc. 49:182.

Keywords

Effect of Tillage and Soil-Applied Herbicides on Broadleaf Signalgrass (Brachiaria platyphylla) Control in Corn (Zea mays)

  • Thomas C. Mueller (a1) and Robert M. Hayes (a1)

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