"Cracking" Time - 2025 (Prostko)

Check out this picture taken from my plots earlier today.  A friendly reminder for peanut growers who need an early-postemergence treatment (aka "cracking" spray) in peanut.  Program can be tweaked according to growers preferences/needs/experiences as follows:

1) Grower can replace Ultra Blazer + Basagran (aka "Georgia Storm") with commercial Storm 4SL @ 16 oz/A.  Storm is a pre-mix formulation of Blazer + Basagran.

2) If grower does not want to use any Ultra Blazer, can just use Basagran 4SL (8 oz/A) or Basagran 5SL (6.4 oz/A).

3) If grower does not want to use Dual Magnum, can use the following:  Anthem Flex 4SE @ 3.0 oz/A; Enversa 3ME @ 48 oz/A; Outlook 6EC @ 16 oz/A; Warrant 3ME @ 48 oz/A; or Zidua 4.17SC @ 2.5 oz/A.  Generally, I have no preference.  When using either Dual Magnum or Outlook in this mix, additional NIS (1 qt/100 gals) is not needed.   

The "Program" Works (Prostko)

Here is a picture taken from my peanut plots earlier this morning.  A friendly reminder that "The Program" really works (starting clean, twin rows, moisture activated residual herbicides) and has been for 28 years of peanut weed control research.

Valor Injury Likely (Again) - Prostko

Valor (flumioxazin) was first registered for use in peanut in 2001.  Since that time, we have observed injury symptoms EVERY year across the state.  Thus, it should no longer be a shock or surprise to anyone when it happens.  The current predicted rainfall events over the next few days will likely result in Valor injury in some peanut fields, particularly in fields where peanuts are cracking.  I do not feel the need to reinvent the wheel, so please check out the following previous 6 blogs where I have addressed the Valor/peanut injury issue: 

June 3, 2013: https://ugaweedscience.blogspot.com/2013/06/valor-injury-on-peanut-prostko.html

May 20, 2014: https://ugaweedscience.blogspot.com/2014/05/peanut-injury-update-prostko.html

May 26, 2017: https://ugaweedscience.blogspot.com/2017/05/valor-injury-or-sky-is-falling-prostko.html

May 21, 2020: https://ugaweedscience.blogspot.com/2020/05/valor-injury-on-peanut-is-likely-prostko.html

May 23, 2021:https://ugaweedscience.blogspot.com/2021/05/irrigating-peanut-fields-treated-with.html

May 13, 2023: https://ugaweedscience.blogspot.com/2023/05/valorpeanut-injury-again-prostko.html

**TAKE HOME POINT FOR THE VALOR/PEANUT INJURY ISSUE: VALOR INJURY IS LIKELY BUT YIELD LOSS IN NOT!

Recent Preventable Problems (Prostko)

Here are a few pictures of recent weed science related problems.  Both could have been avoided by reading and following the label. Label recommendations are NOT suggestions.

1) Problem: Reflex 2SL (fomesafen) applied to snapbean in the fall (2024) with field corn planted this spring (2025).  What does label the label say? Crop rotation restriction for field corn after Reflex is 10 months.

2) Problem: Clarifier 4SL (dicamba) @ 8 oz/A applied 3 days before planting soybeans not tolerant to dicamba.  What does the label say?  Following applications of Clarifier and a minimum accumulation of 1" rainfall or overhead irrigation, a waiting interval of 14 days is required for 8 fluid ounces per acre or less, and 28 days for 16 fluid ounces per acre.