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Tolerance of Sweet Corn (Zea mays) Cultivars to Rimsulfuron

Published online by Cambridge University Press:  12 June 2017

John O'sullivan ,
Robert J. Thomas  and
William J. Bouw
John O'sullivan
Affiliation:
Horticultural Research Institute of Ontario, University of Guelph, Simcoe, ON, Canada N3Y 4N5
Robert J. Thomas
Affiliation:
Horticultural Research Institute of Ontario, University of Guelph, Simcoe, ON, Canada N3Y 4N5
William J. Bouw
Affiliation:
Horticultural Research Institute of Ontario, University of Guelph, Simcoe, ON, Canada N3Y 4N5
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Abstract

Field studies were conducted in 1993 and 1994 to evaluate the tolerance of 16 sweet corn cultivars, representing a range of genotypes, to rimsulfuron applied postemergence (POST) at 12.5 and 25 g ai/ha. There was a significant cultivar by herbicide interaction for visual plant injury, plant height, and yield. ‘Merit’ and ‘Silver Extra Sweet’ were the most sensitive cultivars, with rimsulfuron resulting in complete plant mortality regardless of application dose. ‘Golden Jubilee,’ ‘King Arthur,’ ‘Ivanhoe,’ and ‘Zenith’ were less sensitive. Ten cultivars were tolerant to applications of rimsulfuron at 12.5 g/ha. Sensitivity to rimsulfuron increased as application dose increased.

Keywords

Rimsulfuron, N[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]-3-(ethylsulfonyl)-2-pyridinesulfonamidesweet corn, Zea mays L.Plant height reductionherbicide injurypostemergencesulfonylureayield reductionDAP, days after plantingDAT, days after treatmentPOST, postemergence
Type
Research
Information
Weed Technology , Volume 12 , Issue 2 , June 1998 , pp. 258 - 261
Copyright
Copyright © 1998 by the Weed Science Society of America 

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References

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