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Weed Control with Clomazone Alone and with Other Herbicides

Published online by Cambridge University Press:  12 June 2017

Dan E. Westberg ,
Lawrence R. Oliver  and
Robert E. Frans
Dan E. Westberg
Affiliation:
Dep. Agron., Univ. Arkansas, Fayetteville, AR 72703
Lawrence R. Oliver
Affiliation:
Dep. Agron., Univ. Arkansas, Fayetteville, AR 72703
Robert E. Frans
Affiliation:
Dep. Agron., Univ. Arkansas, Fayetteville, AR 72703
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Abstract

The weed control spectrum of clomazone, the influence of clomazone on the performance of other herbicides, and the performance of tank mixtures containing clomazone were evaluated from 1985 through 1987. Clomazone applied preemergence at 280 g ai/ha controlled 90 to 100% of barnyardgrass, giant foxtail, goosegrass, large crabgrass, seedling johnsongrass, prickly sida, and velvetleaf. Clomazone at reduced rates was more effective applied preemergence than preplant-incorporated for 10 of 23 weed species. Clomazone enhanced imazaquin activity on entireleaf morningglory and sicklepod in 1986. A tank mixture of clomazone, imazaquin, and metribuzin at half the labeled rates reduced soybean injury, increased soybean yield, and controlled weeds as well as the mixture at labeled rates.

Keywords

Clomazone, 2-[(2-chlorophenyl)methyl]-4,4-dimethyl-3-isoxazolidinoneimazaquin, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acidmetribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4 -triazin-5(4H)-onebarnyardgrass, Echinochloa crus-galli (L.)Beauv. ♯3 ECHCGentireleaf morningglory, Ipomoea hederacea var. integriuscula Gray ♯ IPOHGgiant foxtail, Setaria faberi Herrm. ♯ SETFAgoosegrass, Eleusine indica (L.)Gaertn. ♯ ELEINjohnsongrass, Sorghum halepense (L.)Pers. ♯ SORHAlarge crabgrass, Digitaria sanguinalis (L.)Scop. ♯ DIGSAprickly sida, Sida spinosa L. ♯ SIDSPsicklepod, Cassia obtusifolia L. ♯ CASOBsoybean, Glycine max (L.)Merr. ‘Forrest’velvetleaf, Abutilon theophrasti Medik. ♯ ABUTHSynergismtank mixtureadditive interactionGlycine maxCRIHAECHCGXANSTIPOHGSETFAELEINSEBEXIPOHEDATSTSORHADIGSAAMAPAIPOWRIPOLASIDSPCLYMUAMAREORYSACASOBIAQTAAMACHAMATUABUTH
Type
Research
Information
Weed Technology , Volume 3 , Issue 4 , December 1989 , pp. 678 - 685
Copyright
Copyright © 1989 by the Weed Science Society of America 

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References

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