Tank-Mixing Cobra or Ultra Blazer with Cadre in Peanuts (Prostko)

Over the last few days, I have had a few questions about tank-mixing Cobra or Ultra Blazer with Cadre + Dual Magnum + 2,4-DB.  Most are concerned about potential crop injury but this tank-mix has not been overly caustic in my research (Figures 1 and 2).  But, keep in mind that crop injury with tank-mixes can vary greatly depending upon many factors including time of application, GPA, air temperature, leaf wetness, and humidity.  Thus, I can provide no guarantees when 4-6 products are dumped in 1 spray tank.  

Peanut growers who suspect (or are not sure) that they have ALS-resistant Palmer amaranth and/or other weeds that Cadre is less effective on (i.e. tropic croton) would greatly benefit from this tank-mix.  In this scenario, Dual Magnum could be replaced by Outlook, Warrant, or Zidua (grower preference not mine).  Also, I would probably avoid Anthem Flex in this particular situation because of the Aim (carfentrazone) in the Anthem Flex.  When using Warrant or Zidua, a NIS should be included (0.25% v/v or 1 qt/100 gals).

Figure 1.  Cadre + Dual Magnum + 2,4-DB + Cobra.

Figure 2.  Cadre + Dual Magnum + 2,4-DB + Ultra Blazer.

Weed Control Update - June 16, 2021

Just a few things I thought you might be interested in seeing from my research plots over the last few days (a la Dr. Bob K., the E-Mail King of Georgia): 

1) The most effective weed control program (in any crop) happens by starting clean, using a strong residual program that gets activated by rainfall/moisture, and making timely POST applications.

2) Lots of folks interested in using Anthem Flex (pyroxasulfone + carfentrazone) on their peanut crop.  Anthem Flex is a very good herbicide but it will cause more peanut injury than the other WSSA Group 15's. Growers need not forget the other WSSA Group 15's that work equally as well in the UGA recommended peanut weed control programs including Dual Magnum (s-metolachlor), Outlook (dimethenamid-P), Warrant (acetochlor), and Zidua (pyroxasulfone). 

3) Preliminary herbicide/fungicide/peanut response tank-mix research with Provysol looks promising.  I have observed similar results positive results with Cobra and Ultra Blazer.

4) Check out this soybean injury from 2,4-DB (2 oz/A) applied in combo with Reflex (24 oz/A) + Classic (0.5 oz/A).  The use of 2 oz/A of 2,4-DB in just about every POST herbicide application in soybean was very common in the late 1980's/early 1990's before all of the technology explosions.  Looks worse than I remember.  Good weed control though!