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Purple Nutsedge (Cyperus rotundus) Management in Corn (Zea mays) and Cotton (Gossypium hirsutum) Rotations

Published online by Cambridge University Press:  12 June 2017

Theodore M. Webster  and
Harold D. Coble
Theodore M. Webster
Affiliation:
Department of Crop Science, North Carolina State University, Raleigh, NC 27695-7620
Harold D. Coble
Affiliation:
Department of Crop Science, North Carolina State University, Raleigh, NC 27695-7620
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Abstract

A field study was conducted in 1994 and 1995 to determine the effect of MON 12037, linuron, and ametryn on purple nutsedge density in field corn in a 2-yr rotation with cotton. Each corn treatment included cultivation and noncultivation. A standard treatment for purple nutsedge control was applied to all cotton plots in the second season of the corn–cotton rotation. Purple nutsedge shoot densities were reduced in cultivated MON 12037, noncultivated MON 12037, and cultivated ametryn in the corn–corn and corn–cotton rotations. Purple nutsedge tuber population was reduced in the corn–corn rotation by MON 12037 with and without cultivation, cultivated linuron, and cultivated ametryn treatments relative to the noncultivated check. In the corn–cotton rotation, purple nutsedge tuber population was reduced only by the cultivated MON 12037 and cultivated ametryn treatments relative to the noncultivated check.

Keywords

Ametryn, N-ethyl-N'-(1-methylethyl)-6-(methylthio)-1,3,5-triazine-2,4-diamineMON 12037 (proposed, halosulfuron), methyl 5-[[(4,6-dimethoxy-2-pyrimidinyl) amino] carbonylaminosulfonyl]-3-chloro-1-methyl-1-H-pyrazole-4-carboxylatelinuron, N'-(3,4-dichlorophenyl)-N-methoxy-N-methylureapurple nutsedge, Cyperus rotundus L. # CYPROcorn, Zea mays L. ‘Pioneer 3394’cotton, Gossypium hirsutum L. ‘Delta Pine 50.’Crop rotationcultivationnutsedge tuberperennial weedametrynhalosulfuronlinuronMON 12037CYPROALS, acetolactate synthaseDAP, days after plantingfb, followed byPD, postdirectedPPI, preplant incorporated
Type
Research
Information
Weed Technology , Volume 11 , Issue 3 , September 1997 , pp. 543 - 548
Copyright
Copyright © 1997 by the Weed Science Society of America 

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References

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