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Missouri | What did your previous soil tests show? I'd spend 50 bucks and pull an ugly sample and a good sample and get some more pieces to the puzzle. While I was out there I'd do some poking around and dig a couple plants to see if the low spot is showing more signs of compaction than the "normal" areas.
I had a very similar situation earlier in the year. It turned out to be a substantial K deficiency across the whole field with the visually affected areas being very low. I left the field alone and the rains and cool weather hid the symptoms, but have plans to pull soil samples this fall and attack the problem with both sets of info. | |
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Soybean Issue Identification
