Abstract: The present invention provides a ground engaging film roller 30.2 having a generally horizontal axis of rotation and an outer circumference for engaging ground, the roller having opposed outer ends 30.21 of a larger circumference than the circumference of portions 30.22 located between the opposed ends. The present invention also provides a film deployment system having a ground engaging film roller as described above, which is rotationally mounted to a frame 30.1, the ground engaging film roller 30.2 receiving film from above and to a front location of the roller, and passing between a film locating roller 30.3 and the ground engaging roller 30.2, the ground engaging roller 30.2 shaping the ground it engages by forming a channel in ground at the opposed ends 30.21 of the roller 30.2 for the film to be located as it leaves engagement with the ground engaging roller 30.2.