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.