In a method for providing a bale of crop material that is only partially wrapped in a film, a bale of crop material is wrapped in a film with an automatic bale wrapping apparatus. Subsequently the film is provided with a plurality of perforations, and it is ensured that the perforations are present/positioned in an upper half of the bale. This ensures that there is good moisture control of the bale, with moist air able to escape, while stopping ingress of rain water. The bales are mostly dry hay or the like, and favourable perforations are radial slits. There is also provided a system for providing such bales with position controlled perforations.
