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Control and Ecology of Weeds in Continuous Corn Grown Without Tillage

Published online by Cambridge University Press:  12 June 2017

G. B. Triplett Jr.  and
G. D. Lytle
G. B. Triplett Jr.
Affiliation:
Dep. of Agron., Ohio Agricultural Research and Development Center, Wooster, Ohio, 44691
G. D. Lytle
Affiliation:
Dep. of Agron., Ohio Agricultural Research and Development Center, Wooster, Ohio, 44691
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Abstract

Corn (Zea mays L.) was grown continuously without tillage (no-tillage) and with conventional tillage for 7 years to evaluate several herbicides for use in both crop culture systems. The only consistently satisfactory herbicide combinations for the no-tillage corn were 2-chloro-4,6-bis(ethylamino)-s-triazine (simazine) and 1,1′-dimethyl-4,4′bipyridinium ion (paraquat) or 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine), simazine, and paraquat. Annual weed population shifted rapidly with different herbicide systems; fall panicum (Panicum dichotomiflorum Michx.) was the major annual weed where triazines were used as the residual herbicide. After several years of corn grown with no-tillage, hempdogbane (Apocynum cannabinum L.) became a significant problem in some plots. Corn yields with no-tillage were equal to yields in tilled areas provided weed control was satisfactory.

Type
Research Article
Information
Weed Science , Volume 20 , Issue 5 , September 1972 , pp. 453 - 457
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

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