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Common Cocklebur (Xanthium strumarium) Control with Reduced Rates of Soil and Foliar-Applied Imazaquin

Published online by Cambridge University Press:  12 June 2017

James L. Griffin ,
Daniel B. Reynolds ,
P. Roy Vidrine  and
Arnold M. Saxton
James L. Griffin
Affiliation:
Dep. Plant Pathol. Crop Physiol., 302 Life Sci. Bldg., Baton Rouge, LA 70803
Daniel B. Reynolds
Affiliation:
Northeast Res. Stn., St. Joseph, LA 71366
P. Roy Vidrine
Affiliation:
Dean Lee Res. Stn., Alexandria, LA 71302
Arnold M. Saxton
Affiliation:
Dep. Exp. Stat., Baton Rouge, LA 70803
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Abstract

Field studies were conducted to evaluate common cocklebur control in soybean with imazaquin applied preplant incorporated (PPI), preemergence (PRE), and postemergence (POST) at rates ranging from 24 to 140 g ai ha-1. With logistic regression analysis, predictions of common cocklebur control with imazaquin at 140 g ha-1 ranged from 92 to 95% (PPI), 87 and 92% (PRE), and 88 to 98% (POST) when rainfall was received for activation of PRE treatments and when weeds were not moisture stressed at time of POST application. When imazaquin was reduced to 70 g ha-1 under the same conditions, weed control was no higher than 88% PPI and 78% PRE. For all locations and years, common cocklebur control ranged from 79 to 91% for imazaquin POST at 24 g ha-1. Soybean yield was positively correlated with common cocklebur control (r = 0.66, P < 0.05).

Keywords

Imazaquin, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acidcommon cocklebur, Xanthium strumarium L. # XANSTsoybean, Glycine max (L.) Merr.Logistic regressionherbicide activationpreemergencepreplant incorporatedpostemergenceGlycine maxXANST
Type
Research
Information
Weed Technology , Volume 6 , Issue 4 , December 1992 , pp. 847 - 851
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

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