Murray State University

Poster Title

2010 Evaluation of Dark Tobacco at Murray State University: Study 1: (Camp, Parrish, and Wyatt) Evaluation of Different Rates and Combinations of Sulfentrazone and Clomazone in Dark-fired Tobacco

Institution

Murray State University

Abstract

In the herbicide trial, the objective is to determine the best rate combinations of sulfentrazone (Spartan 4F) and clomazone (Command 3ME) either incorporated or applied to the soil surface and not incorporated prior to transplanting. There were fifteen different herbicide treatments in the experiment. Treatments 1-7 were incorporated after spraying, treatments 8-14 were sprayed, but not incorporated, and treatment 15 was a control with no herbicides applied. Treatments 1 and 8 had sulfentrazone applied at a rate of 0.25 lb ai/A. Treatments 2 and 9 had clomazone applied at a rate of 0.75 lb ai/A. Treatments 3 and 10 had sulfentrazone applied at a rate of 0.33lb ai/A. Treatments 4 and 11 had clomazone applied at a rate of 1.0 lb ai/A. Treatments 5 and 12 were a mixture of sulfentrazone at a rate of 0.17 lb ai/A and clomazone at 0.5 lb ai/A. Treatments 6 and 13 were a mixture of sulfentrazone at a rate of 0.25 lb ai/A and clomazone at 0.75 lb ai/A. Treatments 7 and 14 were a mixture of sulfentrazone at a rate of 0.33lb ai/A and clomazone at 1.0 lb ai/A. Throughout the growing season, the control of six different weeds were observed in the plots. The weeds were yellow nutsedge (Cyperus esculentus L.), redroot pigweed (Amaranthus retroflexus L.), morning glories species (Ipomoea sp.), johnsongrass (Sorghum halepense L.), prickly sida (Sida spinosa L.) and ragweed (Ambrosia sp.).

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2010 Evaluation of Dark Tobacco at Murray State University: Study 1: (Camp, Parrish, and Wyatt) Evaluation of Different Rates and Combinations of Sulfentrazone and Clomazone in Dark-fired Tobacco

In the herbicide trial, the objective is to determine the best rate combinations of sulfentrazone (Spartan 4F) and clomazone (Command 3ME) either incorporated or applied to the soil surface and not incorporated prior to transplanting. There were fifteen different herbicide treatments in the experiment. Treatments 1-7 were incorporated after spraying, treatments 8-14 were sprayed, but not incorporated, and treatment 15 was a control with no herbicides applied. Treatments 1 and 8 had sulfentrazone applied at a rate of 0.25 lb ai/A. Treatments 2 and 9 had clomazone applied at a rate of 0.75 lb ai/A. Treatments 3 and 10 had sulfentrazone applied at a rate of 0.33lb ai/A. Treatments 4 and 11 had clomazone applied at a rate of 1.0 lb ai/A. Treatments 5 and 12 were a mixture of sulfentrazone at a rate of 0.17 lb ai/A and clomazone at 0.5 lb ai/A. Treatments 6 and 13 were a mixture of sulfentrazone at a rate of 0.25 lb ai/A and clomazone at 0.75 lb ai/A. Treatments 7 and 14 were a mixture of sulfentrazone at a rate of 0.33lb ai/A and clomazone at 1.0 lb ai/A. Throughout the growing season, the control of six different weeds were observed in the plots. The weeds were yellow nutsedge (Cyperus esculentus L.), redroot pigweed (Amaranthus retroflexus L.), morning glories species (Ipomoea sp.), johnsongrass (Sorghum halepense L.), prickly sida (Sida spinosa L.) and ragweed (Ambrosia sp.).