[lostlogin]

I don’t think you are correct. A lot of places spread it on crop fields historically and many still do. It can be treated to remove (reduce?) the risk of disease transmission.

Animal manure is very good for plants and many gardeners seek out chicken, horse or cow manure.

[toomanybeersies]

Manure is used as a source of nitrogen for crops, not energy. Plants usually get their energy from the sun.