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Response of Glufosinate-Resistant Rice (Oryza sativa) to Glufosinate Application Timings

Published online by Cambridge University Press:  20 January 2017

David Y. Lanclos ,
Eric P. Webster ,
Wei Zhang  and
Steve D. Linscombe
David Y. Lanclos
Affiliation:
Department of Agronomy, 104 M. B. Sturgis, Louisiana State University AgCenter, Baton Rouge, LA 70803
Eric P. Webster*
Affiliation:
Department of Agronomy, 104 M. B. Sturgis, Louisiana State University AgCenter, Baton Rouge, LA 70803
Wei Zhang
Affiliation:
Department of Agronomy, 104 M. B. Sturgis, Louisiana State University AgCenter, Baton Rouge, LA 70803
Steve D. Linscombe
Affiliation:
Louisiana State University AgCenter Rice Research Station, P.O. Box 1429, Crowley, LA 70527
*
Corresponding author's E-mail: ewebster@agctr.lsu.edu
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Abstract

At 14 d after treatment (DAT), glufosinate-resistant CPRS PB-13 rice was injured with early- and late-season glufosinate applications in 1998 and 1999. At 35 DAT, injury was less than 5%. Glufosinate delayed CPRS PB-13 heading by 7 to 15 d and reduced plant height at harvest but did not affect grain moisture and yield compared with the nontreated CPRS PB-13. But yield was reduced compared with conventional Cypress. At 14 DAT, glufosinate-resistant BNGL HC-11/62 rice was injured with early- and late-season applications. Treated BNGL HC-11/62 reached 50% heading 3 to 5 d later than did the nontreated. An application of glufosinate reduced plant height and increased grain moisture compared with the nontreated. Rice treated at the three- to five-leaf, preboot, and boot timings resulted in reduced yields compared with the nontreated BNGL HC-11/62.

Keywords

Glufosinaterice, Oryza sativa L. ‘BNGL HC-11/62’, ‘Cypress’, ‘CPRS PB-13’Application intervalsinjurytoleranceDAT, days after treatmentPOST, postemergence
Type
Commentary
Information
Weed Technology , Volume 17 , Issue 1 , March 2003 , pp. 157 - 160
Copyright
Copyright © Weed Science Society of America 

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