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Wisconsin | We use narrow on corn planter after a striptill situation where we want the seed depth to be over the berm height not the residue/non strip soil height they way it acts like we are planting into fully tilled soil over the wheel. We haven't seen a benefit to do the same on the soybean planter as we too are notill on beans, if we moved to striptill beans it would be considered.
We have 2 year corn 1 year bean rotation and no till beans 7.5" offset from year one corn in 15" rows with standard gauge wheels on our bean planter. Corn year 2 is 15" offset. With this set-up the only issue is residue due to chopping corn head over the notill bean row. This season we turned off the copper head on ground going to beans.
With RTK and reusing guidance lines this shouldn't be a problem with your set-up from what I have seen with our set-up. What is your rotation? If your shifting your lines for each years crop till after beans I would think your root balls should be gobbled up by the time you get back into corn. If your Corn / Soy rotation put the 2nd corn 15" away from the first corn. 0 Year 1 corn, 7.5" year 2 beans, 15" year 3 corn, 7.5" year 4 beans, 0" year 5 Corn if Corn / Soy. Or 0,15,7.5 if corn corn beans and we haven't had any issues with root balls.
Good luck!
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4.5" guage wheels vs 3" guage wheels for no-till soybeans
