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Rice (Oryza sativa) Weed Control with Soil Applications of Quinclorac

Published online by Cambridge University Press:  12 June 2017

Joe E. Street  and
Thomas C. Mueller
Joe E. Street
Affiliation:
Delta Res. and Ext. Cent., Stoneville, MS 38776
Thomas C. Mueller
Affiliation:
USDA-ARS, South Weed Sci. Lab., Stoneville, MS 38776
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Abstract

Field studies were conducted from 1988 to 1990 on a Sharkey clay to evaluate residual weed control in rice with quinclorac applied PPI, PRE to dry soil, and PRE to moist soil. Quinclorac applied at 0.4 or 0.6 kg ai ha−1 PPI or PRE to dry or moist soil controlled more than 80% of barnyardgrass, pitted morningglory, and hemp sesbania without rice injury. Quinclorac applied at 0.3 kg ha−1 controlled these three weed species substantially but inconsistently. No rice injury was observed from any quinclorac treatment. Except for one of three years when irrigation was delayed for 7 d after PRE application to dry soil, application timing did not consistently affect weed control or rice yield.

Keywords

Quinclorac, 3,7-dichloro-8-quinolinecarboxylic acidrice, Oryza sativa L. ‘Lemont’barnyardgrass, Echinochloa crus-galli (L.) Beauv. # ECHCGpitted morningglory, Ipomoea lacunosa L. # IPOLAhemp sesbania, Sesbania exaltata (Raf.) Rydb. ex. A. W. Hill, # SEBEXCrop injuryselectivityEchinochloa crus-galliIpomoea lacunosaSesbania exaltataECHCGIPOLASEBEX
Type
Research
Information
Weed Technology , Volume 7 , Issue 3 , September 1993 , pp. 600 - 604
Copyright
Copyright © 1993 by the Weed Science Society of America 

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References

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