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International Journal of Agronomy
Volume 2011 (2011), Article ID 402461, 8 pages
http://dx.doi.org/10.1155/2011/402461
Research Article

Rice Tolerance to Saflufenacil in Clomazone Weed Control Program

1Department of Soil and Crop Sciences, Texas A&M University, College Station, TX 77843-2474, USA
2Conselho Nacional do Desenvolvimento Científico e Tecnológico (CNPq), 70750-901 Brasília, DF, Brazil
3Texas AgriLife Research, David Wintermann Rice Research Center, Eagle Lake, TX 77434, USA
4BASF Corporation, Agricultural Products Division, 6583 Main Street, Winnsboro, LA 71295, USA

Received 22 July 2011; Accepted 20 September 2011

Academic Editor: Patrick J. Tranel

Copyright © 2011 E. R. Camargo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This research was conducted to evaluate (1) rice tolerance to saflufenacil applied preemergence (PRE) and postemergence (POST) and (2) the combination of saflufenacil and clomazone in light-textured soils. No injury from PRE application of saflufenacil was observed in 2009, and minimal injury for saflufenacil alone was observed in 2010. Injury as high as 68% was observed with combinations of 505 g ha−1 of clomazone applied PRE and 50 g ha−1 of saflufenacil applied POST in 2009 early evaluations. No interaction between clomazone and POST saflufenacil rates was observed in 2010. Rice injury intensified with increasing rates of saflufenacil applied POST. However, rice recovered with time for herbicide treatments applied PRE and POST in both years. Consequently, rice yield was not affected by any of the saflufenacil rates applied either PRE or POST in a clomazone weed control program.