Programs for Controlling Ryegrass and Radish Circular for 2021-2022! (Culpepper and Vance)

Agents, our wheat weed control circular is finalized. For the most part, it remains similar to last year with a few minor adjustments including:

1. Added liquid Zidua formulation (both liquid and dry formulation are labeled)

2. Added comment regarding Fierce and the expectation of the liquid formulation obtaining a label during 2022 (dry formulation labeled now).  

3. Removed Axial from circular; Axial Bold has replaced Axial.

4. Hopefully made tables even more simple to understand. 

If you would like a copy, email Jenna Vance at jcsmith3@uga.edu and ask for one of the following options:

Option 1: Request laminated circulars to be mailed to you. Provide the number of circulars that you would like and provide and address to send them.

Option 2: Request laminated circulars to be brought to you at our Dec. 1 weed training.

Option 3: Request a pdf version. An email response will provide the PDF as an attachment. 

Plans are to bring laminated vegetable circulars to you at our Dec. 1 weed training. In regards to the cotton circular, we are waiting on decisions from the U.S. EPA regarding auxin herbicide labeling requirements/restrictions for 2022 before making edits.

 

 

 

 

Soybean Green Stem (Prostko)

Last week, I received a few phone calls about soybean green stem (SGS) (Figure 1).  The causes of SGS are not well understood but are likely attributed to various stresses that can effect soybean pod development.  Stresses include problems such as stinkbugs, aphids, thrips, disease, viruses, and environmental.   The use of foliar fungicides, especially the strobilurins, have also been associated with SGS.  Cultivar may also be important as well.  

Herbicides such as paraquat, although very useful for soybean leaf defoliation, have been inconsistent in their effect on SGS.  At this time of year (i.e. harvest), the only management tactics for SGS are making sure combine teeth are sharp, reducing combine speeds, and possibly delaying harvest until when/if/maybe a hard freeze occurs.

For more information, check out this recent (September 2021) publication about Green Stem Syndrome in Soybean from Oklahoma State University. https://extension.okstate.edu/fact-sheets/print-publications/pss/green-stem-syndrome-in-soybean-pss-3003.pdf

Figure 1.  Soybean green stem.