Cover crops on swales makes sense to me...
Annual cover crops to add nitrogen and mulch;
- vetch
- cow pea Then seed in perennials.
The one thing that i did not connect with before is that swales on the landscape is designed to be a tree growing system, eventually a food forrest.
https://www.youtube.com/watch?v=P0nVPsyITFo
I have so much reading ahead of me...