A lister plow is designed to build up ridges for ridge tilling (like for sweet potatoes in the garden). Its designed to move dirt up and leaves a trench. I don't think that's what you want. You'll probably have better results with a burndown chemical, then spreading the seed just before a good rain. You sure don't want the burndown (likely roundup) to hurt the trees. Otherwise a disk probably won't damage the fescue. My experience with a disk in the field is that grasses are encouraged unless I run it so fast the weeds are tossed up in the air. A row crop or field cultivator with flat shovels run a couple inches under the surface is more effective at killing grasses. It helps to have sharpened leading edges on those flat shovels to slice off the grass stems. Rye and wheat probably need just a little covering, just enough to hide the seed from birds, if there's a rain soon. I've not tried to raise wheat, nor kill fescue. I recall planting rye in my dad's garden by working up the soil with moldboard plow and spike tooth harrow or rototiller, then tossing the seed by hand and raking it in with the spike tooth harrow. I've drilled oats with a grain drill but it probably won't fit between your trees (12' wide) though 6' drills do exist. The old ones still need the soil worked and I suspect the fescue has to be killed for rye or wheat to grow decently. Gerald J.
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