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Coldwater, Michigan | Rollie,
Where you Nh3 from the previous year, you probably do have a slightly lower Ph. However, you also have some carryover nitrogen that will make the beans greener. Mn deficiencies ultimately amount to a nitrogen deficiency in the plant because adequate manganese allows the fixation of nitrogen. Mn is one of the items that is necessary for that nitrogen fixation. It may be possible that in your tractor tracks the beans are growing slow enough that the Manganese is releasing adequately to keep up. Meanwhile, the beans in the less compacted areas are growing fast enough to outgrow the release of Manganese. It is always possible that the subsoil is higher in pH than the topsoil
What type of soil are these particular beans growing in? Possibly Muck, or high pH mineral soils?
Just some thoughts!
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Soybean manganese deficiency strips in field
