A bale forming apparatus forms a round bale, wraps a surface of the bale, and ejects the bale. A discharge gate of a casing is in a bale forming position while the bale is formed. For wrapping the bale, the discharge gate is pivoted into a bale wrapping position. A web detecting sensor detects whether or not provided web is present on the surface of the bale in the casing. This web detecting sensor senses a segment of the bale surface which is visible through a gap between a stationary casing part and the discharge gate being in the bale wrapping position. The wrapped bale is ejected.
