With gps, and programming the planter’s computer, each row of the planter will turn on or off as commanded.
Even with the same soybean seed variety, 30” rows will tend to have taller plants, and CAN have yields similar to 15” rows, 15” rows tend to yield a little better. If they didn’t farmers wouldn’t be buying any 15” row planters.
I help a local farmer part-time. He has three planters, two which can plant either 15” (for beans) or 30” (for corn), and one that is only for 30” rows, (for corn only).
Interesting... thanks.