Alfalfa bales can sell for a lot more than hay bales. Alfalfa roots reach way down into the earth where all the rich minerals dwell. It is also a legume which fixes nitrogen into the soil. The home baler can make alfalfa bales in the 40 lbs range and 38 lbs for hay.  I should get $5.00 to $10.00 a  bale for pure alfalfa.   The bales would make excellent livestock feed or compost bales if I can't sale them.
The picture is a spot of land I'm going to broadcast seed balls of alfafa. The plastic will set back the weeds, clover and grass from crowding out the alfalfa balls. The plastic has been on there for about three weeks.