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Rice (Oryza sativa) Response to Clomazone plus Bensulfuron and Halosulfuron

  • Christopher R. Mudge (a1), Eric P. Webster (a1), Wei Zhang (a1) and Christopher T. Leon (a1)

Abstract

A field study was conducted in 2002 and 2003 to evaluate the effect of clomazone at 448 g ai/ha plus bensulfuron at 10, 21, 31, and 42 g ai/ha or halosulfuron at 13, 26, 39, and 53 g ai/ha on rice. Herbicide treatments were impregnated onto urea fertilizer and applied at rooting (AR) in a water-seeded production system. Comparison treatments included clomazone AR followed by bensulfuron at 42 g/ha or halosulfuron at 53 g/ha POST. At 7 d after AR (DAAR), rice foliar bleaching decreased from 42% with a single application of clomazone to 23 to 30% with any rate of bensulfuron or halosulfuron impregnated with clomazone. Barnyardgrass and broadleaf signalgrass control did not decrease with the addition of bensulfuron or halosulfuron to clomazone. A single application of clomazone did not control rice flatsedge at 28 DAAR; however, rice flatsedge control was greater than 76% for all bensulfuron and halosulfuron treatments at 28 DAAR. There were no differences in rice yield among herbicide treatments.

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Corresponding author

Corresponding author's E-mail: ewebster@agctr.lsu.edu

Footnotes

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1 Published with approval of the director of the Agricultural Experiment Station, Louisiana State University AgCenter, Baton Rouge, LA 70803, under manuscript number 05-14-0152.
Current address: P.O. Box 110500, 304 Newell Hall, Gainesville, FL 32611.

Footnotes

References

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Keywords

Rice (Oryza sativa) Response to Clomazone plus Bensulfuron and Halosulfuron

  • Christopher R. Mudge (a1), Eric P. Webster (a1), Wei Zhang (a1) and Christopher T. Leon (a1)

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