Cowman82, you bring up some good points. For years i leased a lot of places and spent time and money making them better. Now i spend on my own land except for a few places close by that are free. My land went from what looked poor when i bought it 20 years ago to having the best grass around.
In Virginia the extension agent has an estimated rate for each county. They figure by acre but there is so much variation in the pastures i figure it by animal unit.
My app is saying quackgrass but not with a high degree of certainty. Im not confident in what it is.
I rode through some of my paddocks that havent been grazed and cant find any of it. But i sure got way more grass than cattle to eat it.
Im pretty sure you haven't sowed any so it would be great to know why the red clover has done so well. I have some white but not much red.
Ask your Ag Extension Agent out and get his or her ideas. They will be wanting to have a farm tour there.
My thought was that since it was just heading out that the seed had not spread out from the stem yet.
Best thing is that his cows ate it as soon as it was available to them.