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Control of Johnsongrass in Corn

Published online by Cambridge University Press:  12 June 2017

Raymond D. Hicks  and
O. Hale Fletchall
Raymond D. Hicks
Affiliation:
University of Missouri Eli Lilly & Co.
O. Hale Fletchall
Affiliation:
University of Missouri
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Abstract

The use of preplow foliar application of 2,2-dichloropropionic acid (dalapon) for two seasons, a pre-emergence soil incorporated treatment of ethyl N,N-dipropylthiolcarbamate (EPTC) for three seasons, and tillage during all 3 years was effective in the control of Johnsongrass (Sorghum halepense (L.) Pers.) while corn was being produced on the land. The use of tillage alone, dalapon plus tillage, or EPTC plus tillage resulted in neither satisfactory Johnsongrass control nor corn yield. Dalapon plus tillage reduced the rhizomatous Johnsongrass population and increased corn yield the season following preplow treatments; reinfestation occurred, however, from Johnsongrass seedlings that emerged in the row after the corn was planted. EPTC afforded early season control of seedling Johnsongrass. EPTC plus tillage did not satisfactorily control Johnsongrass or increase corn yield over tillage alone. Injury to corn planted 1 in deep was noted in the first season's treatments; however, corn planted 1½ in deep in subsequent years was not affected.

Type
Research Article
Information
Weeds , Volume 15 , Issue 1 , January 1967 , pp. 16 - 20
Copyright
Copyright © 1967 Weed Science Society of America 

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References

Literature Cited

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