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SE IA | Foliar,
You seem to be doing quite a bit of fertilizer applications, the one thing I would probably disagree with your overall assessment was your potassium fertility. It appears that you are putting on somewhere around 50 units of K depending on how much is in the KTS. If you are shooting for 100 bushel soybeans, then you are going to need somewhere around 150 units of K. (300# of 0-0-50 or 250# 0-0-60). How many units of commercial plant food foliar and soil applied are you putting on each acre? Soil applied N-P-K-S-Zn-Ca? Foliar applied N-P-K-S-Zn-Ca? Those are my questions for you.
I personally would like to play around with more rates of pel-lime just to see if there is a response to the calcium in our calcerious soils.
Sometimes with soybeans I think it helps to be more lucky than good as soil-life pointed out. I have seen farmers with some pretty poor P/K levels pull some outstanding yields. I am sure this has to do with their deeper taproot that allows them to mine subsurface P/K better than a grass crop like corn. | |
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fertilizing soybeans
