dry 14 or 10% boron. Do not waste your $ on the micro mix. liq zinc will tie up when mixed with 10-34-0 and be useless. I used to do it. My tissue tests were always low in zinc. I tried twice as much zinc with the same results. I tried zinc + micro mix and still had low tissue levels.The next year, I spread dry zinc sulfate and dropped the liq. My test levels were good.

I am not selling  products  like Mike.  I am speaking my experience, that I paid for.