Controlling grassy weeds in sorghum has been a challenge for produces since most herbicides that will control grasses injure sorghum, also a grass.
One class of herbicide, acetolactate synthase inhibiting (ALS) materials, has been used successfully in other crops—cotton, corn, soybeans and wheat—but only recently in grain sorghum, thanks to ALS resistant sorghum.
A Texas AgriLife study is underway to test the effectiveness of the DuPont herbicide Zest and Pioneer ALS-resistant grain sorghum.
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Jourdan Bell, AgriLife Extension agronomist in Amarillo, is part of a larger study encompassing other areas of Texas as well as neighboring states to test the technology.
“It’s very important that we are involved in these trials because we are working to provide unbiased results directly to our local producers regarding successful weed control with this technology,” Bell said.
“As our farmers look at their bottom line and analyze their inputs, it’s very important that they understand the ideal crop stage and proper rates at which to apply the herbicides in order to achieve optimal herbicide performance.”
She said the results of these Extension-based studies will be used by DuPont Crop Production in their final stages of research and development of the Zest herbicide. It is anticipated that the Zest herbicide will be released along with the ALS-tolerant grain sorghums in 2016.