This winter I planted two rows of Chickasaw Plums and Crabapple trees,about 2,000 lineal feet, around a pasture to provide overhead cover and feeding area. This is bordered by a 60' wide strip of native grasses that gets 1/3 disced every year.
Just MHO, but if you disk 1/3 of a native grass patch each year, you will turn it into a weed patch with no grass.