A combination is made up of a tractor and a seeder suitable for direct drilling mounted on a three-point hitch of the tractor. The seeder has a crossbeam that is connected to the three-point hitch and on which a plurality of sowing units are arranged laterally in succession. The sowing units, each equipped with at least one furrow opener, are respectively prestressed downward in relation to the crossbeam by an actuator, and the three-point hitch can be self-locked in relation to a chassis of the tractor. During the sowing operation, the pressing forces for the furrow openers are therefore introduced via the sowing units, the actuator, the crossbeam and the three-point hitch into the chassis of the tractor.

A fluid control system for supplying fluid to multiple actuators associated with different implements disposed on an agricultural planter row unit. A first one of the multiple actuators is associated with a first implement disposed on the agricultural planter row unit. A second one of the multiple actuators is associated with a second implement disposed on the agricultural planter row unit. The fluid control system controls fluid flow from a fluid source to each of the first and second actuators. In one embodiment, the fluid control system includes an inlet valve, an outlet valve and a pressure sensor, wherein the inlet valve is in fluid communication with the fluid source and the pressure sensor is disposed to measure fluid pressure in a fluid line in fluid communication with the inlet valve and each of the first and second actuators.

An agricultural implement includes at least one row unit having a plurality of support members, each of which is pivotably coupled to an attachment frame or another of the support members to permit vertical pivoting vertical movement of the support members, and a plurality of soil-engaging tools, each of which is coupled to at least one of the support members. A plurality of hydraulic cylinders are coupled to the support members for urging the support members downwardly toward the soil. A plurality of controllable pressure control valves are coupled to the hydraulic cylinders for controlling the pressure of hydraulic fluid supplied to the cylinders. A plurality of sensors produce electrical signals corresponding to predetermined conditions, and a controller is coupled to the sensor and the controllable pressure control valves. The controller receives the electrical signals from the sensors and produces control signals for controlling the pressure control valves.

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.

The present invention also provides an agricultural or horticultural implement 10, 30 for performing an agricultural or horticultural process, the implement 10,30 including whipper arrangement 50 at a location forward of where the process will be performed.

The agricultural or horticultural implement 10, 30 can be such that to the rear of where the process is performed there can located film deployment system 30 as described above.

A system for adjusting a force acting on a row cleaner of a row unit for an agricultural implement may include a first frame member, a second frame member pivotably coupled to the first frame member, at least one cleaning wheel rotatable relative to the second frame member, a biasing member configured to apply a force against the second frame member along a line of action, an actuator configured to actuate the biasing member to adjust an orientation of the line of action of the force, and a controller configured to selectively control an operation of the actuator. The biasing member extends between first and second biasing ends, with the first biasing end being pivotably coupled to the second frame member. The actuator extends between first and second actuator ends, with the second actuator end being pivotably coupled to the second biasing end.

A seed plug planting system, method and apparatus comprising a seed plug containing a local environment surrounding a seed. The local environment comprises one or more inputs including, a soil input and a fertilizer input. The seed plug is planted into a global environment, such as field, by a planter. The planter plants the seed plug at a certain depth and orientation relative to the surface of the global environment.

A variable pressure control system for varying pressures in the fluid circuits of a dual acting actuator over a range of pressures. The variable pressure control system includes a controller that cooperates with pressure regulators for regulating the desired pressure in the fluid circuits.

A variable pressure control system for varying pressures in the fluid circuits of a dual acting actuator over a range of pressures. The variable pressure control system includes a controller that cooperates with pressure regulators for regulating the desired pressure in the fluid circuits.

An agricultural system includes a tow bar, a first row-cleaning device, and a second row-cleaning device. The first row-cleaning device is attached to the tow bar via a first frame and includes a first roller device in a trailing position relative to a first furrow-opener disk and configured to crush standing residual plant matter along a first path on a field. The second row-cleaning device is attached to the tow bar via a second frame and includes a second roller device in a trailing position relative to a second furrow-opener disk and configured to crush standing residual plant matter along a second path on the field. The second roller device is offset longitudinally from the first roller device.

Herein is described an agricultural device that can include a frame; and a plurality of roller-crimping devices supported by the frame arranged in at least one row oriented in a direction that is transverse to a direction of travel of the agricultural device. Each of the plurality of roller-crimping devices having an exterior surface configured to at least partially crush stems of residual plant matter, and being individually movably mounted to the frame such that each of the plurality of roller-crimping devices will move at least vertically with respect to the frame when subjected to a temporary increase in resistance caused by an encounter with a non-uniform region in the field.