You can create any maps and convert with a good flexible software, check some options about planting with GeoPard https://docs.geopard.tech/geopard-tutorials/agronomy/variable-rate-seeding-planting-maps
Pros: all the data in one place (yield, as-applied/planted, soil, topography, imagery, sampling plans, etc.) any data in, any data out; use your own logic (zones, equations), rates, products; make post-harvest analysis (profit maps, trial/hybrid analysis). 

Free trial is here: https://app.geopard.tech