Murray State University

Study 3 (Puckett, Vowell, & Story): Trials with a New Experimental Herbicide, Rimsulfuron, for Dark-Fired Tobacco

Institution

Murray State University

Abstract

There is a need for a post-emergence herbicide in tobacco that controls broadleaves. This research tested experimental rimsulfuron with broadleaf activity that includes post-emergence treatments. The pre-emergence herbicide treatments were applied June 11, 2012 and the postemergence herbicide treatments were applied July 16, 2012. The herbicide treatments were: Treatment #1 was 0.027 lb carfentrazone per acre and 0.246 lb. sulfentrazone per acre both applied pre-emergence; Treatment #2 was 0.027 lb carfentrazone per acre, 0.246 lb. sulfentrazone per acre, and 0.75 lb. clomazone per acre all applied pre-emergence; Treatment #3 was 0.027 lb carfentrazone per acre, 0.246 lb. sulfentrazone per acre, and 0.0156 lb of rimsulfuron per acre all applied pre-emergence; Treatment #4 was 0.027 lb carfentrazone per acre, 0.246 lb. sulfentrazone per acre, and 0.03125 lbs of rimsulfuron per acre all applied preemergence; Treatment #5 was 0.027 lb carfentrazone per acre and 0.246 lb. sulfentrazone per acre both applied pre-emergence, plus a post-emergence application of 0.0156 lbs of rimsulfuron per acre with 0.25% (v/v) of non-ionic surfactant; Treatment #6 was 0.027 lb carfentrazone per acre and 0.246 lb. sulfentrazone per acre both applied pre-emergence, plus a post-emergence application of 0.03125 lbs of rimsulfuron per acre with 0.25% (v/v) of non-ionic surfactant; Treatment #7 was a control with no herbicides applied. The tobacco was set June 12-13, 2012 with the variety PD 7309LC. Data collected included two crop injury ratings, three weed control ratings, and yield. Tobacco was harvested on October 15, 2012. All data was statistically reported after stripping.

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Study 3 (Puckett, Vowell, & Story): Trials with a New Experimental Herbicide, Rimsulfuron, for Dark-Fired Tobacco

There is a need for a post-emergence herbicide in tobacco that controls broadleaves. This research tested experimental rimsulfuron with broadleaf activity that includes post-emergence treatments. The pre-emergence herbicide treatments were applied June 11, 2012 and the postemergence herbicide treatments were applied July 16, 2012. The herbicide treatments were: Treatment #1 was 0.027 lb carfentrazone per acre and 0.246 lb. sulfentrazone per acre both applied pre-emergence; Treatment #2 was 0.027 lb carfentrazone per acre, 0.246 lb. sulfentrazone per acre, and 0.75 lb. clomazone per acre all applied pre-emergence; Treatment #3 was 0.027 lb carfentrazone per acre, 0.246 lb. sulfentrazone per acre, and 0.0156 lb of rimsulfuron per acre all applied pre-emergence; Treatment #4 was 0.027 lb carfentrazone per acre, 0.246 lb. sulfentrazone per acre, and 0.03125 lbs of rimsulfuron per acre all applied preemergence; Treatment #5 was 0.027 lb carfentrazone per acre and 0.246 lb. sulfentrazone per acre both applied pre-emergence, plus a post-emergence application of 0.0156 lbs of rimsulfuron per acre with 0.25% (v/v) of non-ionic surfactant; Treatment #6 was 0.027 lb carfentrazone per acre and 0.246 lb. sulfentrazone per acre both applied pre-emergence, plus a post-emergence application of 0.03125 lbs of rimsulfuron per acre with 0.25% (v/v) of non-ionic surfactant; Treatment #7 was a control with no herbicides applied. The tobacco was set June 12-13, 2012 with the variety PD 7309LC. Data collected included two crop injury ratings, three weed control ratings, and yield. Tobacco was harvested on October 15, 2012. All data was statistically reported after stripping.