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Red Rice (Oryza sativa) Control and Suppression in Rice (O. sativa)

Published online by Cambridge University Press:  12 June 2017

Sam L. Kwon ,
Roy J. Smith Jr.  and
Ronald E. Talbert
Sam L. Kwon
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Stuttgart, AR 72160
Roy J. Smith Jr.
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Stuttgart, AR 72160
Ronald E. Talbert
Affiliation:
Dep. Agron., Altheimer Lab., Univ. Arkansas, Fayetteville, AR 72703
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Abstract

Two field experiments were conducted from 1986 to 1988 to determine efficacy of herbidices and plant growth regulators for red rice control and suppression in water- and drill-seeded rice. Molinate applied PPI with fenoxaprop applied at panicle initiation (PI) of rice controlled 94 and 86% of red rice in water- and drill-seeded rice, respectively, compared with 79 and 49%, respectively, for molinate PPI alone in the two cultures. Although this treatment injured rice slightly (< 30%), rice so treated produced high yields with improved grain quality. Sequential treatments of molinate PPI followed by sethoxydim applied at PI or amidochlor applied at > 90% heading produced comparable rice yields with improved red rice control or suppression and grain quality in both cultures, compared with PPI molinate. Drill-seeded rice treated with molinate PPI followed by fenoxaprop applied at late boot or MH (maleic hydazide) applied 7 d after heading produced higher yield than rice treated with molinate PPI.

Keywords

Amidochlor, N-[(acetylamino)methyl]-2-chloro-N-(2,6-diethylphenyl)acetamidefenoxaprop, (±)-2-[4-[(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoic acidMH, 1,2-dihydro-3,6-pyridazinedionemolinate, S-ethyl hexahydro-1H-azepine-1-carbothioatesethoxydim, 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-onered rice, Oryza sativa L. ♯ ORYSA, strawhullrice, Oryza sativa L., ‘Tebonnet’Weed controlred rice controlred rice seedhead suppressionplant growth regulatorsherbidicesORYSA
Type
Research
Information
Weed Technology , Volume 5 , Issue 4 , December 1991 , pp. 811 - 816
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

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