Georgia Peanuts: More Tank-Mix Info/Mixing Order Problems

    Loading herbicide. ©Debra L Ferguson Stock Photography

    Here are a few things of interest from last week:

    1. Been getting a lot of questions about the use of COC (1% v/v) vs. NIS (0.25% v/v) with Select/Clethodim 2EC on peanut.  Generally, clethodim works better when applied with a COC vs. NIS (~10-15% better on some days).  But, COC increases crop injury (see below) especially when hot/dry.

    In the picture below Dyne-Amic (Helena), is a combination of methylated seed oil (soybean) + organosilicone-based NIS.  Growers who are overly concerned about peanut injury could use the other formulations of clethodim (Select Max 0.97EC, Tapout 0.97EC, Intensity One 0.97EC) that already include an adjuvant, can be used with a NIS, and are less likely to cause major leaf burn (will still get some leaf burn in this weather).

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    2. Check out this tank-mix. Ouch!! Class Act NG is a NIS + AMS product (Winfield).  Praiz 6F is a generic chlorothalonil (Winfield).  Domark 1.9ME (tetraconazole), from Gowan, is labeled for early/late leaf spot, web blotch, and rust.  In my opinion, the Class Act NG was not really needed and the rate of Dual Magnum could have been reduced to 16 oz/A.

    This is a great example of everyone on the planet (me included) not knowing what will happen on any given day when 6 products are tank-mixed together (especially when hot/dry).

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    3. Somebody asked me about tank-mixing boron with Cadre + DB + Dual Magnum + Priaxor???  Never did it before.  See below.  Not as bad as I was anticipating but it could be very different on any given day and/or when sprayed later in the PM.

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    4. Check out this picture from JK.  A huge mess.  Best we could come up with after reviewing product labels and scratching our heads was an incorrect mixing order.  Mixing order matters!!!!

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