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24
Jun
2013
Resistant weed fact sheet now available online
Author: Bob Scott, Professor & Extension Weed Scientist

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.

3
May
2013
Cold, wet weather optimal for herbicide injury in rice
Author: Bob Scott, Professor & Extension Weed Scientist

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, […]

15
Apr
2013
Glyphosate drift on wheat
Author: Bob Scott, Professor & Extension Weed Scientist

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 the chlorotic (yellowish to white) bleaching at the base of the flag […]

15
Apr
2013
Ryegrass invasion heading north
Author: Bob Scott, Professor & Extension Weed Scientist

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 burndown fields where the problem is obviously growing (see pictures).  In these fields where […]

19
Apr
2012
Tank mixing for aerial application of Command on rice
Author: Bob Scott, Professor & Extension Weed Scientist

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 […]

6
Mar
2012
Bob Scott on Flag the Technology
Author: Mary Hightower, University of Arkansas Division of Agriculture

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.

2
Mar
2012
Herbicide: Mode of Action
Author: Mary Hightower, University of Arkansas Division of Agriculture

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.

12
Jan
2012
Scott: Rotate weed chemistry, not just crops
Author: Mary Hightower, University of Arkansas Division of Agriculture

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, […]