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Influence of tillage and Triticum aestivum cover crop on herbicide efficacy in Oryza sativa

Published online by Cambridge University Press:  12 June 2017

David L. Jordan ,
Patrick K. Bollich ,
Michael P. Braverman  and
Dearl E. Sanders
Patrick K. Bollich
Affiliation:
Rice Research Station, Louisiana State University Agricultural Center, P.O. Box 1429, Crowley, LA 70527
Michael P. Braverman
Affiliation:
Department of Plant Pathology and Crop Physiology, 302 Life Sciences Building, Louisiana State University, Baton Rouge, LA 70803
Dearl E. Sanders
Affiliation:
Louisiana Cooperative Extension Service, 261 Knapp Hall, Baton Rouge, LA 70803
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Extract

Field experiments were conducted from 1994 through 1996 in dry-seeded and water-seeded Oryza sativa to compare weed control and O. sativa yield in conventional tillage and reduced tillage (stale seedbed and Triticum aestivum cover crop) systems with no in-season herbicide, propanil applied early postemergence (EPOST), and propanil EPOST followed by propanil plus molinate (dry-seeded production) or granular molinate (water-seeded production). The T. aestivum cover crop reduced Echinochloa crus-galli, Heteranthera limosa, Ammania coccinea, and Cyperus esculentus infestation and reduced the need for in-season herbicides in some but not all experiments. Oryza sativa grain yield was affected by both tillage systems and herbicide programs; however, these treatment factors influenced yield independently. Increasing the number of in-season herbicide applications increased weed control and O. sativa yield in some but not all experiments.

Keywords

MolinateEchinochloa crus-galli (L.) Beauv. ECHCG, barnyardgrassHeteranthera limosa (L.) Willd. HETLI, ducksaladAmmania coccinea Rottb. AMMCO, purple ammaniaCyperus esculentus L. CYPES, yellow nutsedgeOryza sativa L. ‘Cypress,’ riceTriticum aestivum L., wheatAllelopathyweed managementAMMCOCYPESECHCGHETLI
Type
Weed Management
Information
Weed Science , Volume 47 , Issue 3 , June 1999 , pp. 332 - 337
Copyright
Copyright © 1999 by the Weed Science Society of America 

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Footnotes

Current address: EPL Bio Analytical Services, P.O. Box 771084, Winter Garden, FL 34777

References

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