Weed control economical, yield-critical in corn

by Kay Ledbetter, Texas A&M AgriLife

Just how much water are weeds using in a corn crop, and is it more economical to treat or not is the focus of a Texas A&M AgriLife study.

Dr. Jourdan Bell, Texas A&M AgriLife Extension Service agronomist in Amarillo, and her Texas A&M AgriLife Research graduate student Aislinn Walton have found in early results heavy weed pressure could result in a 100-bushels-per acre yield loss on a corn crop. Continue reading

March 9 workshop will address barnyardgrass in Mid-South crops

In Delta Farm Press

A few years back, with herbicide-resistant pigweeds rampaging through Mid-South row crops, Arkansas weed scientists put together the “Pigposium.” The overwhelming positive response to the pigweed-centric workshop proved the concept.

Now it is time to address the next weed that threatens Mid-South crops: barnyardgrass. Barnyardgrass management in all Mid-South crops will be the focus of a workshop to be held at the Grand Prairie Center in Stuttgart, Arkansas, on March 9.

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Resistant barnyardgrass torments Mid-South

in Delta Farm Press

On the way to becoming Arkansas’ Number One grass weed, barnyardgrass has tormented farmers while picking up resistance to a wide range of herbicides. And without agronomic changes the weed is likely to ratchet up the pressure on Mid-South crops.

Propanil resistance in Arkansas barnyardgrass was documented in the early 1990s. Shortly thereafter, Facet (Quinclorac) came in under a Section 18 and was widely adopted. By the late 1990s, weed scientists began to find Quinclorac resistance.

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Midsouth weed scientists seek a good “model” for managing herbicide-resistant barnyardgrass

Researchers from Arkansas, Mississippi and Louisiana will use simulation modeling to develop a sustainable plan for rice farmers trying to control herbicide-resistant barnyardgrass.

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Six Southern scientists receive funding to solve weed, disease problems

Six teams of IPM scientists will use funding from the USDA Southern Regional IPM grant program to explore ways to control weeds and diseases while reducing the use of pesticides. From non-chemical weed control to plant disease management, these teams will explore new tools that farmers can use to battle diseases and weeds, while lowering their use of fungicides and herbicides. This year, USDA has awarded approximately $768,000 to support Southern Regional IPM projects.

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