A liquid spraying system having a liquid spray section and a controller for controlling liquid to the spray section. The controller includes a valve operable between multiple positions for controlling the supply of liquid to the spray section and enabling the flow of liquid from the spray section to a flow back line only after the liquid supply to the spray section has been terminated.

A method comprising: activating a strobed or pulsed illumination source to produce illuminating light; polarising the illuminating light in a first polarisation axis; illuminating at least part of a tall plant crop with the polarised illuminating light to produce reflected illuminating light; polarising the reflected illuminating light in a second polarisation axis transverse to the first polarisation axis produce cross-polarised reflected illuminating light; capturing an image of at least part of the tall plant crop using the cross-polarised reflected illuminating light; and analysing the captured image to determine a condition of the tall plant crop. Also a vehicle mounted image capture system, a vehicle mounted spraying system and a plant health management system.

Systems and methods for calculating a plant spread and a plant density of vegetation are provided. An ultrasonic signal is transmitted towards vegetation by one or more transducers. A plurality of echo signals is received as reflections of the ultrasonic signal by the one or more transducers. A plant spread of the vegetation is calculated based on a first echo signal of the plurality of echo signals and a last echo signal of the plurality of echo signals. A plant density of the vegetation is calculated based on the plurality of echo signals. The plant spread and the plant density of the vegetation are output.

Control zones are dynamically identified on a thematic map and work machine actuator settings are dynamically identified for each control zone. A position of the work machine is sensed and actuators on the work machine are controlled based on the control zones that the work machine is in, and based upon the settings corresponding to the control zone. When modification criteria are met, an actuator setting in a control zone can be modified, during operation. The control zone is then divided on a near real-time display into a harvested portion of the control zone, and a new control zone that has yet to be harvested, and that has the modified actuator setting value. A record is then generated and stored, for the harvested control zone, and for the new control zone.

An agricultural zone management system and methods where a variable rate prescription (VRP) includes a plurality of equipment zones of the agricultural field that are generated based on at least one treatment dimension of a farm implement to be used in the agricultural field, and each one of the equipment zones is further defined based on one or more of an intended direction of travel of the farm implement in the agricultural field, and an intended travel path of the farm implement in the agricultural field. In addition, a treatment plan, such as a treatment rate, can be generated based on the needs of plants, soil or the like in each equipment zone.

A system (1000) and method of marking soil or crops within afield with a visual strip (1001) to identify an occurrence of a detected event as an agricultural implement (10) traverses a field. The system includes an assembly (100, 200, 300, 500, 700, 800, 900) supported by the agricultural implement. The assembly includes a supply of a colored composition and an actuator (130, 330, 1030) configured to receive the actuation signals sent by the controller (80, 81). The actuator is responsive to the actuation signals to release the colored composition at the location on the field while the agricultural implement advances through the field in the forward direction of travel.

The invention relates to a method for the application of spray liquid containing plant protection agents onto rows of plants with an agricultural spraying device comprising groups of spray nozzles, wherein the groups of spray nozzles and the spray nozzles of each group are spaced apart from one another perpendicular to a travel path of the agricultural spraying device that extends parallel to the rows of plants. The method comprises the following steps: selecting at least one spray nozzle each from at least some of the groups of spray nozzles by means of control signals of a control unit to control the spray nozzles; applying spray liquid with the selected spray nozzles onto one row of plants each; the spray liquid being applied from the selected spray nozzles as strip application in the form of respective strips in which the application of the spray liquid does not overlap within a nominal spray angle of directly adjacent spray nozzles of the selected spray nozzles. The invention furthermore relates to an agricultural spraying device embodied to carry out the method according to the invention and a corresponding computer-readable medium.

A semi-active suspension system includes a suspension element having a damping coefficient range. The suspension element optionally includes an implement end and a chassis end. The semi-active suspension system includes a suspension control circuit in communication with the suspension element. The suspension control circuit optionally includes a kinematic assessment circuit in communication with one or more sensors. The kinematic assessment circuit is configured to measure or determine kinematic characteristics of one or more of the agricultural implement and the chassis. The suspension control circuit optionally includes a damping control circuit, and the damping control circuit generates a specified damping characteristic based on the measured or determined kinematic characteristics. The damping control circuit optionally directs the suspension element to operate within the damping coefficient range based on the specified damping characteristic.

A spraying system including a boom having a first end, a middle, and a second end; a plurality of nozzles disposed on the boom; a plurality of cameras (70) disposed on the boom and positioned to each view a subset of the plurality of nozzles; a plurality of lights disposed on the boom and positioned to each illuminate a subset of the plurality of nozzles.

Various embodiments of an apparatus, methods, systems and computer program products described herein are directed to an agricultural observation and treatment system and method of operation. Fluid may be provided through a first pressurized fluid line from a fluid source within an agricultural treatment system to a fluid port of a treatment head assembly of the agricultural treatment system. The fluid may be delivered from the fluid port to one or more spraying tips when the fluid regulator is actuated when in a desired position.