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Barnyardgrass (Echinochloa crus-galli) Control in Water-Seeded Rice (Oryza sativa) with Cyhalofop-butyl

Published online by Cambridge University Press:  20 January 2017

Dimitrios A. Ntanos ,
Spyridon D. Koutroubas  and
Costas Mavrotas
Dimitrios A. Ntanos*
Affiliation:
National Agricultural Research Foundation, Cereal Institute, 57001 Thermi-Thessaloniki, Greece
Spyridon D. Koutroubas
Affiliation:
National Agricultural Research Foundation, Cereal Institute, 57001 Thermi-Thessaloniki, Greece
Costas Mavrotas
Affiliation:
Dow AgroSciences Export S.A., Athens, Greece
*
Corresponding author's E-mail: cerealin@mail.otenet.gr.
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Abstract

Field experiments were conducted in 1996 and 1997 to evaluate barnyardgrass (Echinochloa crus-galli) control, rice (Oryza sativa) yield, and grain quality with cyhalofop-butyl applied early postemergence (EPOST) or late postemergence (LPOST) in drained or flooded plots at rates of 0.15 to 0.4 kg ai/ha and standard treatments of molinate or propanil. Control with cyhalofop-butyl at 0.15 and 0.2 kg/ha applied in drained plots was greater compared to propanil and generally increased when treatments were applied EPOST to plots reflooded 2 d after treatment. Barnyardgrass control with cyhalofop-butyl at 0.15 and 0.2 kg/ha applied in flooded plots was similar to or better than the control obtained with molinate. Rice yields generally reflected differences in barnyardgrass control and were greatest with cyhalofop-butyl applied EPOST in drained plots. The 0.4 kg/ha rate of cyhalofop-butyl resulted in rice foliar injury and significant reductions in grain yield. Grain qualitative characteristics (total milling yield, grain vitreosity, grain length, and grain length to width ratio) were better with cyhalofop-butyl applied EPOST in drained plots compared with propanil or molinate.

Keywords

Cyhalofop-butylmolinatepropanilbarnyardgrass, Echinochloa crus-galli (L.) Beauv. # ECHCGrice, Oryza sativa L. ‘Ispaniki A’Weed managementECHCGDAT, days after treatmentDBH, days before harvestEPOST, early postemergenceLPOST, late postemergencePOST, postemergence
Type
Research Article
Information
Weed Technology , Volume 14 , Issue 2 , June 2000 , pp. 383 - 388
Copyright
Copyright © Weed Science Society of America 

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References

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