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Efficacy of reduced rates of quinclorac applied with propanil or propanil plus molinate in dry-seeded rice (Oryza sativa)

Published online by Cambridge University Press:  12 June 2017

David L. Jordan
David L. Jordan*
Affiliation:
Northeast Research Station, Louisiana State University Agricultural Center, P.O. Box 438, St. Joseph, LA 71366
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Abstract

Research was conducted from 1994 through 1996 to evaluate barnyardgrass control, rice yield, and estimated economic return with postemergence applications of propanil or propanil plus molinate applied alone or with quinclorac. Herbicides were applied at rates of 3.4, 2.8 + 2.8, and 0.17 to 0.40 kg ai ha−1 for propanil, propanil plus molinate, and quinclorac, respectively. In most trials, combinations of propanil or propanil plus molinate applied with quinclorac provided greater barnyardgrass control, rice yields, and estimated economic returns than herbicides applied alone. Propanil or propanil plus molinate applied with quinclorac at 0.28 kg ha−1 was as effective as propanil or propanil plus molinate applied with quinclorac at 0.40 kg ha−1. Applying quinclorac at 0.17 kg ha−1 with propanil plus molinate was as effective as applying quinclorac at 0.28 or 0.40 kg ha−1 with these herbicides.

Keywords

Molinate, propanil, barnyardgrass, Echinochloa crus-galli (L.) Beauvrice ‘Cypress.’Economic returnsweed managementECHCG
Type
Weed Management
Information
Weed Science , Volume 45 , Issue 6 , December 1997 , pp. 824 - 828
Copyright
Copyright © 1997 by the Weed Science Society of America 

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