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SW MN and Gold Canyon AZ | Lets say you have a farm that you grid sample. I am assuming you can't VRT band. Areas of the field show higher than normal P and K readings and areas that show low P and K . If you band and are not able to change rates as you go across the field you are wasteing fert on those high testing areas. With VRT one does not have to put any fert in those areas and use that fert for the low fertility areas.
I still think VRT is the way to go if you want to save fertilizer $$especially lime apps. Overlaying yield maps with VRT maps is very interesting. I feel I have been able to raise yields in the low testing high yielding areas. The higher yielding areas take more total P and K. Those hills that don't produce much take very little P and K.
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Any negatives to banding P&K?
