Farm Progress

Fertility key to weed controlWeeds more tolerant of poor fertilityGood stand is more competitive

Ron Smith 1, Senior Content Director

December 3, 2010

1 Min Read

Proper fertility is the first line of defense in a viable forage weed control program, says Texas AgriLife Extension forage specialist Vanessa Corriher.

“If fertility is depleted, weeds are more likely to encroach,” Corriher said during a recent Ag Technology Conference on the Texas A&M-Commerce campus.

“Weeds are more tolerant of low fertility, so if producers take money out of their fertility budget they should be prepared to add it back on their weed control bill.”

Corriher offered a list of reasons why weed control programs sometimes fail. They include:

  • Spraying too early or at the wrong time for specific weed species.

  • Spraying some biennial and perennial weed species when they are young and growing instead of when they are blossoming or producing or dropping fruit. “Early application may burn the plants but will not provide long-term control,” she said. Timing may be species-dependent.

  • Weeds are mis-identified. “Proper identification is crucial for proper herbicide selection and timing. Several Websites are available to help identify weeds.”

  • Application during stressful environmental conditions such as drought stress when weeds are not actively growing and do not take up the chemical.

  • Wind speed is too high to assure accuracy and to prevent drift.

  • Spraying at the wrong growth stage.

  • Using the wrong product.

  • Using a sprayer that is not properly calibrated. And,

  • Failure to read and follow the label. “The label is the law,” Corriher said.

Weed management, Corriher said, is crucial to maintaining a persistent stand of forage that provides optimum livestock utilization.

About the Author(s)

Ron Smith 1

Senior Content Director, Farm Press/Farm Progress

Ron Smith has spent more than 40 years covering Sunbelt agriculture. Ron began his career in agricultural journalism as an Experiment Station and Extension editor at Clemson University, where he earned a Masters Degree in English in 1975. He served as associate editor for Southeast Farm Press from 1978 through 1989. In 1990, Smith helped launch Southern Turf Management Magazine and served as editor. He also helped launch two other regional Turf and Landscape publications and launched and edited Florida Grove and Vegetable Management for the Farm Press Group. Within two years of launch, the turf magazines were well-respected, award-winning publications. Ron has received numerous awards for writing and photography in both agriculture and landscape journalism. He is past president of The Turf and Ornamental Communicators Association and was chosen as the first media representative to the University of Georgia College of Agriculture Advisory Board. He was named Communicator of the Year for the Metropolitan Atlanta Agricultural Communicators Association. More recently, he was awarded the Norman Borlaug Lifetime Achievement Award by the Texas Plant Protection Association. Smith also worked in public relations, specializing in media relations for agricultural companies. Ron lives with his wife Pat in Johnson City, Tenn. They have two grown children, Stacey and Nick, and three grandsons, Aaron, Hunter and Walker.

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