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Influence of Adjuvants and Formulation on Barnyardgrass (Echinochloa crus-galli) Control with Propanil in Rice (Oryza sativa)

Published online by Cambridge University Press:  12 June 2017

David L. Jordan ,
Ann B. Burns ,
C. Jeff Barnes ,
Wayne Barnett  and
J. Kelly Herrick
David L. Jordan
Affiliation:
Northeast Research Station, Louisiana State University Agricultural Center, P.O. Box 438, St. Joseph, LA 71366
Ann B. Burns
Affiliation:
Northeast Research Station, Louisiana State University Agricultural Center, P.O. Box 438, St. Joseph, LA 71366
C. Jeff Barnes
Affiliation:
Northeast Research Station, Louisiana State University Agricultural Center, P.O. Box 438, St. Joseph, LA 71366
Wayne Barnett
Affiliation:
Northeast Research Station, Louisiana State University Agricultural Center, P.O. Box 438, St. Joseph, LA 71366
J. Kelly Herrick
Affiliation:
Northeast Research Station, Louisiana State University Agricultural Center, P.O. Box 438, St. Joseph, LA 71366
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Abstract

Experiments were conducted to compare barnyardgrass control and rice injury and yield with emulsifiable concentrate and dry flowable formulations of propanil as single or repeat applications with crop oil concentrate, methylated seed oil, a blend of organosilicone surfactant and methylated seed oil or conventional nonionic surfactant, and organosilicone surfactant. Two applications of propanil were more effective in controlling barnyardgrass than a single application. The emulsifiable concentrate formulation of propanil controlled barnyardgrass more effectively than the dry flowable formulation in some but not all experiments. Differences in barnyardgrass control with propanil as influenced by adjuvants were minor and inconsistent. The most consistent barnyardgrass control and the highest rice yields were obtained with repeat applications of the emulsifiable concentrate formulation of propanil.

Keywords

Propanil, N-(3,4-dichlorophenyl)propanamidebarnyardgrass, Echinochloa crus-galli (L.) Beauv. # ECHCGrice, Oryza sativa L. ‘Cypress,’ ‘Jodon.'Spray additiveweed managementECHCGCOC, crop oil concentrateDF, dry flowableEC, emulsifiable concentrateMSO, methylated seed oilOSL, organosilicone
Type
Research
Information
Weed Technology , Volume 11 , Issue 4 , December 1997 , pp. 762 - 766
Copyright
Copyright © 1997 by the Weed Science Society of America 

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