Abstract: A soil opener includes a support and a soil opener unit. The soil opener unit comprises: first and second soil-cutting members; and a delivery tube with an exit aperture for releasing material to be deposited in the soil. The first soil-cutting member comprises a rotating disc having a first soil-engaging surface inclined: at a first angle to a perpendicular to the soil surface; and at a second angle to the direction of travel, whereby the rotating disc defines a leading upwardly inclined face defining a leading side of the rotating disc and a trailing downwardly-inclined face defining a trailing side of the rotating disc. The second soil-cutting member comprises a fixed blade defining a second soil-engaging surface. The second soil-engaging surface comprises a soil-lifting surface projecting laterally relative to the first soil-cutting member, and the exit aperture of the delivery tube is provided adjacent a rear part of the soil-lifting surface.

Abstract: An apparatus for clearing trash from a soil surface, the apparatus being configured to be mounted on a towable frame support and driven across the soil surface in a direction of travel (“D”), the apparatus comprising: a bearing housing; and a soil-engaging member rotatably mounted to the support, wherein the soil-engaging member is oriented to rotate about an axis (“A”) tilted from a perpendicular to the soil surface (“B”) by an acute angle (?1) towards one lateral side relative to the direction of travel (“D”), whereby contact between the soil-engaging member and the soil surface induces rotation of the soil-engaging member around the axis (“A”).

Abstract: A soil opener comprises first and second soil-cutting members. The first member has a first soil-engaging surface inclined at a first angle perpendicular to the soil surface when viewed along a travel direction, the first angle being greater than zero, and at a second angle to the travel direction when viewed along a perpendicular, the second angle being greater than zero. The second member comprises a rotating disc and has a second soil-engaging surface that faces away from, and in a substantially opposite direction to, the first soil-engaging surface, the second soil-engaging surface being inclined at a third angle perpendicular when viewed along the travel direction, the third angle being greater than zero and in the same sense as the first angle.

Abstract: A soil opener comprises first and second soil-cutting members. The first member has a first soil-engaging surface inclined at a first angle to a perpendicular to the soil surface when viewed along a travel direction, the first angle being greater than zero, and at a second angle to the travel direction when viewed along a perpendicular, the second angle being greater than zero. The second member comprises a rotating disc and has a second soil-engaging surface that faces away from, and in a substantially opposite direction to, the first soil-engaging surface, the second soil-engaging surface being inclined at a third angle to a perpendicular when viewed along the travel direction, the third angle being greater than zero and in the same sense as the first angle.