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The Influence of Growth Regulators and Nitrogen on Leafy Spurge (Euphorbia esula) Control with Picloram

Published online by Cambridge University Press:  12 June 2017

Gregg A. Regimbal  and
Alex R. Martin
Gregg A. Regimbal
Affiliation:
Dep. Agron., Univ. Nebraska, Lincoln, NE 68583
Alex R. Martin
Affiliation:
Dep. Agron., Univ. Nebraska, Lincoln, NE 68583
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Abstract

The addition of chlorflurenol (methyl 2-chloro-9-hydroxyfluorene-9-carboxylate) at 0.6 kg ai/ha or mefluidide {N-[2,4-dimethyl-5-[[(trifluoromethyl)sulfonyl]amino]phenyl] acetamide} at 0.3 kg ai/ha to picloram (4-amino-3,5,6-tricloropicolinic acid) at 0.3 kg ae/ha increased leafy spurge (Euphorbia esula L. # EPHES) control compared to picloram alone. Application of 84 kg/ha nitrogen in the fall prior to a spring treatment of 0.3 kg/ha picloram decreased the original stand (75%) compared to no nitrogen (18%). In greenhouse experiments, chlorflurenol and mefluidide increased the amount of 14C-picloram absorbed approximately twofold when applied in combination but not when applied independently. Based on 14C-picloram absorbed, chlorflurenol and mefluidide each increased the amount of 14C translocated to the root system, whether applied independently or in combination with picloram. An increase in root bud numbers was observed following an application of 0.6 kg/ha chlorflurenol or nitrogen.

Keywords

ChlorflurenolethephonmefluidideEPHES
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 33 , Issue 1 , January 1985 , pp. 109 - 113
Copyright
Copyright © 1985 by the Weed Science Society of America 

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References

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