I agree with HAB do a search.
We wait a few days after the combine so that the stalks are dry in the center. If the combine has a chopping head it will be small enough (too small?). If the combine has a standard head, we chopped it after the dew was dry, and only baled on dry days. We rake high with a wheel rake to keep it out of the dirt.
We only have a string tie baler, but net wrap is best. These bales will last a long time inside, but decay quickly outside, especially if it is warmer where you live.
Just a few thoughts...
Mark