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Barnyardgrass (Echinochloa crus-galli) Control in Dry-Seeded Rice (Oryza sativa) with Soil-Applied and Postemergence Herbicide Programs

Published online by Cambridge University Press:  12 June 2017

David L. Jordan
Affiliation:
Northeast Research Station, Louisiana State University Agricultural Center, P.O. Box 438, St. Joseph, LA 71366
Donnie K. Miller
Affiliation:
Northeast Research Station, Louisiana State University Agricultural Center, P.O. Box 438, St. Joseph, LA 71366
Stephen H. Crawford
Affiliation:
Northeast Research Station, Louisiana State University Agricultural Center, P.O. Box 438, St. Joseph, LA 71366

Abstract

A study was conducted from 1994 through 1996 to evaluate barnyardgrass control, rice yield, and estimated economic returns with delayed preemergence (DPRE) applications of pendimethalin, quinclorac, thiobencarb, pendimethalin plus quinclorac, and pendimethalin plus thiobencarb applied alone or followed by postemergence (POST) applications of propanil or propanil plus molinate. Late-season barnyardgrass control with pendimethalin plus quinclorac was greater than with pendimethalin, quinclorac, thiobencarb, or pendimethalin plus thiobencarb. Control with pendimethalin, quinclorac, and pendimethalin plus thiobencarb exceeded that with thiobencarb. Propanil plus molinate controlled barnyardgrass more effectively than propanil. Quinclorac and pendimethalin plus quinclorac were the only DPRE herbicide treatments where yield and estimated economic returns were not improved by POST herbicides.

Type
Research
Copyright
Copyright © 1997 by the Weed Science Society of America 

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References

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