Thursday, May 08, 2014

Treat Waterhemp Now for Effective Herbicide Control

Contact: Jill Scheidt, agronomy specialist
Headquartered at Barton County Extension Center
Tel: (417) 682-3579

LAMAR, Mo. – Two-inch tall waterhemp and sedge grass are starting to show up in area corn fields according to Jill Scheidt, agronomy specialist with University of Missouri Extension.

That means now is the best time to treat waterhemp.

“Herbicide treatments are most effective when applied to weeds two inches or less in height and diameter,” said Scheidt.

According to the MFA Agronomy Guide, Callisto products, Status and Realm Q are rated 90 percent or better control for waterhemp.

“These herbicides have a crop height restriction on the label, always read the label before applying any chemical to your field,” said Scheidt.

Due to dry weather, Scheidt says diseases were not present in wheat at the flag leaf and boot stage in the fields she scouted.

“If the weather becomes humid, watch for diseases, if any appear on the lower part of the plant and begin moving toward the flag leaf or appear on the flag leaf, spray a fungicide,” said Scheidt. “It is important to protect the flag leaf from disease because it is responsible for 75 percent of the grain fill.”

Wheat and corn fields were scouted east of Lamar on May 7 by Jill Scheidt, agronomy specialist with University of Missouri Extension.


The weekly field scouting report is sponsored by University of Missouri Extension and Barton County Extension. For more information on this scouting report, or to learn how to receive it a week earlier by telephone, contact the MU Extension Center in Barton County, (417) 682-3579.


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