Hostname: page-component-76fb5796d-skm99 Total loading time: 0 Render date: 2024-04-29T21:26:39.205Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of Prior Year's Weed Control on Herbicide Effectiveness in Corn (Zea mays)

Published online by Cambridge University Press:  12 June 2017

Robert G. Hartzler  and
Greg W. Roth
Robert G. Hartzler
Affiliation:
Dep. Agron., The Pennsylvania State Univ., Univ. Park, PA 16802
Greg W. Roth
Affiliation:
Dep. Agron., The Pennsylvania State Univ., Univ. Park, PA 16802
Get access Rights & Permissions [Opens in a new window]

Abstract

Three levels of weed control (0, 70, and 100%) were maintained in 1989 during corn production at two sites. Weed control in 1990 with a premix formulation of metolachlor and atrazine was directly related to 1989 control levels. Herbicides generally were more effective in conventional tillage than in no-tillage. In no-tillage, giant foxtail control in 1990 averaged 59% following 100% control in 1989 compared to 15% following 0% weed control. At one location, tillage minimized the impact of the prior year's weed control with herbicides providing greater than 85% control in conventional tillage regardless of prior history. In no-tillage, weed control of 85% or better was obtained only following 100% control the previous year.

Keywords

Atrazine, 6-chloro-N-ethyl-N′-(1-methylethyl)-1,3,5-triazine-2,4-diaminemetolachlor, 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamidecorn, Zea mays L.common lambsquarters, Chenopodium album L. # CHEALfall panicum, Panicum dichotomiflorum Michx. # PANDIgiant foxtail, Setaria faberi Hermm. # SETFAsmooth pigweed, Amaranthus hybridus L. # AMACHtillageChenopodium albumPanicum dichotomiflorumSetaria faberiAmaranthus hybridusAMACHCHEALPANDISETFA
Type
Research
Information
Weed Technology , Volume 7 , Issue 3 , September 1993 , pp. 611 - 614
Copyright
Copyright © 1993 by the Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Anonymous. 1991. Agricultural chemical usage. 1990 field crops summary. U. S. Dep. Agric. Agric. Chem. 1(91). 154 p.Google Scholar
2. Buhler, D. D. and Mester, T. C. 1991. Effect of tillage systems on the emergence depth of giant (Setaria faberi) and green foxtail (Setaria viridis). Weed Sci. 39:200–203.CrossRefGoogle Scholar
3. Doub, J. P., Wilson, H. P., Hines, T. E., and Hatzios, K. K. 1988. Consecutive annual applications of alachlor and metolachlor to continuous no-till corn (Zea mays). Weed Sci. 36:340–344.CrossRefGoogle Scholar
4. Khedir, K. D. and Roeth, F. W. 1981. Velvetleaf seed populations in six continuous corn fields. Weed Sci. 29:485–490.CrossRefGoogle Scholar
5. Maxwell, B. D. and Ghersa, C. 1992. The influence of weed seed dispersion versus the effect of competition on crop yield. Weed Technol. 6:196–204.CrossRefGoogle Scholar
6. Pareja, M. R., Staniforth, D. W., and Pareja, G. P. 1985. Distribution of weed seed among soil structural units. Weed Sci. 33:182–189.CrossRefGoogle Scholar
7. Schweizer, E. E. and Zimdahl, R. L. 1984. Weed seed decline in irrigated soil after six years of continuous corn and herbicides. Weed Sci. 32:76–83.CrossRefGoogle Scholar