Much of Georgia continues to get hammered with frequent rainfall events. When will it end? Here are some answers to questions you might be getting:
1) How much has it rained?
Updated rainfall totals from June 12-June 21, 2023
2) What’s my best peanut weed control recipe for a disaster field?
a) Apply Select 2EC (clethodim) @ 8-16 oz/A + COC @ 1% v/v then
b) 3 days after the Select application, apply the following combination: Cadre @ 4 oz/A + Cobra @ 12.5 oz/A + 2,4-DB @ 16 oz/A + any Group 15 herbicide (either Anthem Flex @ 3 oz/A or Dual Magnum @ 16 oz/A or Outlook @ 12.8 oz/A or Warrant @ 48 oz/A or Zidua SC @ 2.5 oz/A). Include NIS @ 0.25% v/v when using Anthem Flex, Warrant, or Zidua.
c) Costly for sure but desperate times require desperate measures!
3) Can I also add Strongarm to that mix?
Yes, I did that in 2022 to clean up a peanut field and observed no major problems. Check out the following pics:
4) Is there a shortage of Cobra (lactofen)?
I have heard from several growers that Cobra was not available. I contacted my inside sources at Valent and this situation should be remedied. A e-mail quote from my Valent contact yesterday: “Cobra being shipped this week so no excuses moving forward!”
5) Can peanut herbicides be applied aerially by plane or drone?
The short answers is yes (but not Cadre. It does not have an aerial application label) but I have some concerns. I have been conducting weed control research since 1987. During this 36 year time frame, I have never applied herbicides in water volumes less than 10 GPA. Coverage, crop injury, and efficacy are my concerns. There is a ton of work being conducted with drones but I have not seen a sufficient amount of replicated university data to confirm true weed control efficacy. But in this current rainy situation, perhaps something is better than nothing??????
6) What are the minimum labeled GPA requirements for aerial applications of peanut herbicides?
Butyrac 200 (2,4-DB) = 5 GPA; Classic = 3 GPA; Cobra = 7 GPA; Gramoxone = 5 GPA; Select = 3 GPA; Storm = 5 GPA; Ultra Blazer = 5 GPA
7) Is Classic still available for late-season Florida beggarweed control in peanuts?
Yes! Check out page 224 in 2023 UGA Pest Control Handbook for updated information about peanut cultivar tolerance to Classic.
https://secure.caes.uga.edu/extension/publications/files/pdf/SB%2028-24_1.PDF
8) Is Gramoxone (paraquat) still labeled for use in peanuts in a non-selective applicator such as a rope-wick or weed wiper?
Yes! Check out page 224 in 2023 UGA Pest Control Handbook. Gramoxone applied in this fashion is very effective on Palmer amaranth, Florida beggarweed, and sicklepod.
https://secure.caes.uga.edu/extension/publications/files/pdf/SB%2028-24_1.PDF
For more info:
TopCrop Super Sponge: https://www.smucker.net/weed-wiper-products
GrassWorks Weed Wiper: https://grassworksmanufacturing.com/
LMC-Cross Wick-Bar: https://www.lmcag.com/