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Response of BAR-Transformed Rice (Oryza sativa) and Red Rice (Oryza sativa) to Glufosinate Application Timing

Published online by Cambridge University Press:  12 June 2017

Sujatha Sankula ,
Michael P. Braverman  and
Steven D. Linscombe
Sujatha Sankula
Affiliation:
Department of Plant Pathology and Crop Physiology, 302 Life Sciences Building, Louisiana State University, Baton Rouge, LA 70803
Michael P. Braverman
Affiliation:
Department of Plant Pathology and Crop Physiology, 302 Life Sciences Building, Louisiana State University, Baton Rouge, LA 70803
Steven D. Linscombe
Affiliation:
Rice Research Station, Crowley, LA 70527
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Abstract

Glufosinate at 2.2 kg ai/ha injured rice transformed with the BAR gene more when applied to one- to two-leaf (23 to 26%) than to three- to four-leaf (13 to 19%) plants. Visible injury was least when applications were made at boot stage (3 to 14%). However, applications at boot stage caused an average grain yield reduction of 16%. Most treatments did not influence rice plant height. Among single applications (0.3, 0.4, 0.6, 0.8, and 1.1 kg/ha), 1.1 kg/ha glufosinate at three- to four-leaf stage of red rice resulted in greater control (91%) than at panicle initiation (74%) or at boot stage (77%). Injury to red rice was two to 11 times greater than the injury to BAR-transformed rice depending on glufosinate rate and application timing.

Keywords

Glufosinate, 2-amino-4-(hydroxymethylphosphinyl)butanoic acidred rice, Oryza sativa L. ORYSArice, Oryza sativa L. ‘Gulfmont.'BAR genebenomylgrowth stagesequential applicationssingle applicationstransformed riceweed managementBAR, bialaphos resistance geneDAT, days after treatmentHm, hygromycin, PAT, phosphinothricin acetyl transferasePI, panicle initiation
Type
Research
Information
Weed Technology , Volume 11 , Issue 2 , June 1997 , pp. 303 - 307
Copyright
Copyright © 1997 by the Weed Science Society of America 

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