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Response of Three Annual Grasses to Fluazifop

Published online by Cambridge University Press:  12 June 2017

Jeffrey F. Derr ,
Thomas J. Monaco  and
Thomas J. Sheets
Jeffrey F. Derr
Affiliation:
Dep. Hortic. Sci., North Carolina State Univ., Raleigh, NC 27695-7609
Thomas J. Monaco
Affiliation:
Dep. Hortic. Sci., North Carolina State Univ., Raleigh, NC 27695-7609
Thomas J. Sheets
Affiliation:
Dep. Hortic. Sci., North Carolina State Univ., Raleigh, NC 27695-7609
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Abstract

In greenhouse studies, the butyl ester of fluazifop {(±)-2-[4-[[5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy]propanoic acid} applied preemergence at 0.035 kg ai/ha gave 91% control of goosegrass (Eleusine indica Gaertn. ♯ ELEIN), 79% control of large crabgrass [Digitaria sanguinalis (L.) Scop. ♯ DIGSA], and 73% control of giant foxtail (Setaria faberi Herrm. ♯ SETFA). In field studies, the butyl ester of fluazifop at 0.56 kg ai/ha applied preemergence gave 79% control of goosegrass, 76% control of large crabgrass, and 53% control of giant foxtail. The butyl ester of fluazifop at 0.07 kg/ha gave 79 to 85% control of each grass at the pretillering stage in field studies. The same rate applied at the early tillering stage gave 84% control of goosegrass but only 53 and 58% control of large crabgrass and giant foxtail, respectively. Relative species response was similar from spray and leaf-spot applications of the herbicide. The butyl ester of fluazifop at 4 μg/plant when spot-applied to leaves of the three grasses at the tillering stage resulted in 65% control of goosegrass but only 20 and 25% control of large crabgrass and giant foxtail, respectively.

Keywords

Sethoxydimgrowth stageEleusine indicaDigitaria sanguinalisSetaria faberiELEINDIGSASETFA
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 33 , Issue 5 , September 1985 , pp. 693 - 697
Copyright
Copyright © 1985 by the Weed Science Society of America 

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References

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