We had often wondered why, when a new field was sown or just a mend at the side of the road, they always plant oats. Now maybe an answer (of course I could just ask!). When the new farmer took over next door’s land, he ploughed and then sowed oats and I guess undersowed with grass.
The combine arrived in late august and took away the crop. The farmer then returned and cut the grass underneath and put it into windrows along with the straw and baled it- not wrapping it. I know Oat straw is soft, so I guess it’s for feeding. Maybe oats are also a fertilising crop on the new ground. Neat!