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Wild-Proso Millet (Panicum miliaceum) Control in Central Great Plains Irrigated Corn (Zea mays)

Published online by Cambridge University Press:  12 June 2017

Philip Westra ,
Robert G. Wilson  and
Robert L. Zimdahl
Philip Westra
Affiliation:
Dep. Plant Pathol. Weed Sci., Colo. State Univ., Ft. Collins, CO 80523
Robert G. Wilson
Affiliation:
Dep. Agron., Univ. Nebr., Scottsbluff, NE 69361
Robert L. Zimdahl
Affiliation:
Dep. Plant Pathol. Weed Sci., Colo. State Univ., Ft. Collins, CO 80523
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Abstract

Wild-proso millet control in furrow-irrigated corn was evaluated in Colorado and Nebraska in 1986 and 1987. No single herbicide alone controlled wild-proso millet all season. In Colorado, EPTC applied preplant incorporated followed by cyanazine plus pendimethalin applied early postemergence controlled 94% of wild-proso millet. Acetochlor applied preemergence followed by cyanazine plus pendimethalin applied early postemergence controlled wild-proso millet better all season (93%) than alachlor (81%) or metolachlor (71%) followed by the same early postemergence strategy. Successful Colorado wild-proso millet management treatments (>85% season-long control) increased corn yields an average of 3260 kg ha-1 compared to the untreated control. To obtain wild-proso millet control of 90% or more in Nebraska in 1986, alachlor, cycloate, EPTC, and metolachlor applied had to be combined with cyanazine plus pendimethalin applied early postemergence. Average corn yields in herbicide-treated areas in Nebraska were 2980 kg ha-1 higher than those recorded in the untreated control.

Keywords

Acetochlor, 2-chloro-N-(ethoxymethyl)-N-(2-ethyl-6-methylphenyl)acetamidealachlor, 2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetamidecyanazine, 2-[[4-chloro-6-(ethylamino)-1,3,5-triazin-2-yl]amino]-2-methylpropanenitrilecycloate, S-ethyl cyclohexylethylcarbamothioatedichlormid, 2,2-dichloro-N,N-di-2-propenylacetamideEPTC, S-ethyl dipropyl carbamothioatemetolachlor, 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamidependimethalin, N-(1-ethylpropyl)-3,4-dimethyl-2,6-dinitrobenzenaminesethoxydim, 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-onecorn, Zea mays L. ♯3 ZEAMXwild-proso millet, Panicum miliaceum L. ♯ PANMIWeed controlweed suppressionyield lossPANMIZEAMX
Type
Symposium
Information
Weed Technology , Volume 4 , Issue 2 , June 1990 , pp. 409 - 414
Copyright
Copyright © 1990 Weed Science Society of America 

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References

Literature Cited

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