M
firefighterjake said:Most definitely can happen . . . seen it myself with hay that was baled up while still too green . . . weird to see a whole field of baled up hay on fire. At first we thought it was a bunch of punks that had set the hay on fire . . . until we opened up one bale that wasn't on fire and the inside hay was actually hot to the touch.
Backwoods Savage said:Yup, it is identical whether in square or round bales; big or small. First mold, then the heat really gets to cooking.
If we baled hay a bit too wet we would daily stick our hands into the bale to feel for heat. Of course we also set the strings a bit loose; too tight and problems speed up.