So I'm originally from ND so it may be different, but I'll use ND for example. The rules may have changed, but my understanding of the rules from back when I worked in the department were as such:
The Public Land Open to Sportsmen (PLOTS) program is a program by itself where you simply open up your land for hunting access and you receive compensation. It doesn't matter what the conservation or habitat value of the land is. I've hunting waterfowl in countless bare cut fields and have shot a big dumb whitetail standing in the middle of a PLOTS stubble field staring at a doe. They will accept any private land into the program. Even if it's a simple cut field or a grazed-down pasture, it's still opportunity. So even if the conservation/habitat value of the land is low, it's still nice to have as much open land as possible, even if it provides dumb luck opportunity. The compensation is minimal.
The Private Land Initiative (PLI) program is encompassed within the PLOTS program. This is the program where landowners are being compensated separate (in addition) of simple PLOTS money. This can be in the form of food plots, tree row planting cost sharing, CRP access, wetlands reserves, habitat plots, etc. Compensation is adjusted accordingly.
EDIT: I will add that if the PLOTS program was a "you plant and graze how we tell you" type of thing, I bet the program would see at least a 2/3 reduction in lands in the program. You're on the terms of the land owner. It's worth looking into your particular state to see if it's a similar structure. I will argue the importance of having as much land open to sportsmen as possible. Changing it up and saying "you only get your payment from now on if you leave 10 rows of corn" WILL results in a slammed door and less public opportunity. Be careful.