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Resistant weed fact sheet now available online

A new fact sheet, “The Spread of HerbicideResistant Weeds: What Should Growers Know?” is now available online for download. To obtain FSA2171, visit: http://www.uaex.edu/Other_Areas/publications/PDF/FSA-2171.pdf.

Cold, wet weather optimal for herbicide injury in rice

With more wet weather and an unprecedented cold front coming through, conditions are right to see some injury from rice herbicides. One particular “no-no” is Newpath on hybrid Clearfield when conditions are like this. I would,  in fact,  avoid the use of ALS chemistry in general on rice until it warms up a bit. Usually,

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Glyphosate drift on wheat

Symptoms of glyphosate drift on winter wheat. (Image by Bob Scott)

Glyphosate drift from burndown fields to wheat is starting to show up in areas around the state.

The photo (right) shows typical symptoms of wheat that likely recieved a drift rate of glyphosate sometime after panical initiation. Note the short flag leaf and

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Ryegrass invasion heading north

SURVIVORS — Clumps of ryegrass that have survived burndown. (Image by Bob Scott)

Glyphosate resistant ryegrass was discovered in southeastrn Arkansas more than three years ago, but has been slow to move north into the Natural State.

However, I recently traveled the counties just south of I-40 from Lonoke to Hughes, and observed many

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Tank mixing for aerial application of Command on rice

We’ve been receiving a lot of calls about what tank mixes are labeled for Command by air on rice. All  of these applications below are labeled by specific 24c labeling only.

The Arkansas State Plant Board has a complete list of 24Cs online at http://170.94.200.136/prodreg/?24c=AR.

Below are labels from select 24Cs. Click the name and the label

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Bob Scott on Flag the Technology

Bob Scott, extension weed scientist for the University of Arkansas System Division of Agriculture, provides an overview of Flag the Technology in less than two minutes.

Herbicide: Mode of Action

Bob Scott, extension weed scientist for U of Arkansas System Division of Agriculture, discusses mode of action herbicide and what it means in context of resistance.

Scott: Rotate weed chemistry, not just crops

HAZEN, Ark. – Farmers have known the benefits of crop rotation for centuries, but weed control chemistries should also be rotated to forestall herbicide resistance, according to Bob Scott, weed scientist for the University of Arkansas System Division of Agriculture.

Scott gave an overview of the problem of herbicide resistant weeds, not just in Arkansas,

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