Disclosed is a plant protection and management system for a center pivot and linear irrigation system. In the plant protection and management system, the movable platform is configured to provide at least one of an application unit, a seeding-fertilizer spreader unit or a monitoring unit. The application unit is configured to spray agriculture chemicals or fertilizers on crops. The seeding-fertilizer spreader unit is configured to sow seeds of crops. Further, the monitoring unit is configured to monitor crops and collect status data of the crops or status data of environment. According to different requirements on agricultural production, at least one of the application unit, the sowing unit or the monitoring unit can be selectively arranged on the movable platform so as to meet various requirements on plant protections and managements in the process of agricultural production.

A programmable, electronically controlled sprinkler system has a hermetically sealed internal chamber which encloses all of the internal water flow, valves, mechanical and rotational components and a plurality of magnetic coupling arrangements which allow external motors to control operation of the internal mechanical components without requiring any hydraulic seals.

Crop input application systems, methods and apparatus are provided. In some embodiments, an irrigation system is provided with a reel in fluid communication with a wellhead, secondary cart or fluid supply line outlet. In some embodiments, a drop assembly is incorporated in an irrigation system. In some embodiments, a crop applicator system traverses a field portion at a first speed in a first direction and then traverses the field portion at a second, lower speed in a second, opposite direction

A speed-control system for an irrigation system may detect when an actual speed of the irrigation system is faster or slower than a target speed of the irrigation system. In some instances, the speed-control system may detect when the actual speed is faster or slower at discrete virtual points of interest and execute compensatory measures.

A fully automated irrigation system to irrigate regular and irregular shapes of land. The system includes a water delivery pipe assembly configured to travel linearly while irrigating adjacent to a stationary row of water main spaced access valves. The system includes an automated connector configured to supply water from the access valves to the water delivery pipe assembly. The connector includes a swing arm, a compensator, a valve coupler, a lift and a swinger. The swing arm facilitates positioning a coupler body above a next-up access valve and facilitates positioning the delivery pipe assembly. The compensator compensates for distance change between a coupled-to access valve and the delivery pipe assembly when the assembly travels. A coupler body resides at an outer end of the swing arm. The lift raises and lowers the swing arm to couple and uncouple respectively the coupler body along the row of access valves. The lift also holds the swing arm above the ground while the swinger swings the swing arm proximate to the next-up access valve for subsequent coupling the coupler body thereto.

A programmable, electronically controlled sprinkler system has a hermetically sealed internal chamber which encloses all of the internal water flow, valves, mechanical and rotational components and a plurality of magnetic coupling arrangements which allow external motors to control operation of the internal mechanical components without requiring any hydraulic seals.

A system for intelligent regulation of the flow rate in an irrigation plant includes a pipeline feeding an irrigation liquid, a drop pipe connected to the pipeline, and a regulation device connected to the drop pipe and associated with a liquid distribution device having a continuous regulating valve and a local electronic control unit that varies pressure and flow rate of the liquid sent to a nozzle. The continuous regulating valve includes an elastically yielding pipe connected to the drop pipe and a valve member interacting with the pipe to deform it and vary its flow area. A program installed in the electronic control unit controls the movement of the valve member and changes flow rate downstream of the drop pipe, avoiding sudden variations and water hammers. The local electronic control unit is associated with a sensor that detects abnormal operation of the regulation device, enabling preventive maintenance.

Apparatus and method for an improved driveline coupler having a reversible saddle thereon which allows it to be configured to work with different sizes and shapes of shafts. The reversible saddle is configured on one side to work with one size of driveline shaft and configured on the opposite side to work with a different size driveline shaft so that, in the field, an operator can modify the driveline coupler from use with a first size of drive shaft to a second size of drive shaft easily and quickly by turning the saddle upside down.

A monitoring system for an irrigation system that includes a nozzle and a product source that supports a product for mixing with water from a water source to which the irrigation system is operably coupled. The monitoring system includes: a sensor configured to generate a first electrical signal indicative of a travel speed and/or a travel direction of the irrigation system; a fluid pressure sensor configured to generate a second electrical signal indicative of a flow rate, a processor, a memory, and a variable speed pump or a valve. The memory includes instructions, which when executed by the processor cause the monitoring system to: receive the first and second generated electrical signals, determine an applied rate of the irrigation fluid over a predetermined irrigation area based on the first and second electrical signals, and adjust the flow rate of the irrigation fluid through the at least one nozzle.

An irrigation system and method of controlling operations of the irrigation system are provided. The method includes determining, via a control system, a soil water depletion at a first location based on soil data captured via a sensor; determining, via the control system, a difference in irrigation amounts at the first location and a second location; determining, via the control system, a difference in precipitation amounts at the first location and the second location; determining, via the control system, a difference in evapotranspiration values of crops at the first location and the second location; calculating an estimated soil water depletion at the second location based, at least in part, on the soil water depletion at the first location, the difference in irrigation amounts at the first location and the second location, the difference in precipitation amounts at the first location and the second location, and the difference in evapotranspiration values of crops at the first location and the second location; and directing, via the control system, the irrigation system to apply an amount of water at the second location based, at least in part, on the estimated soil water depletion at the second location. The irrigation system may comprise a fluid-carrying conduit, a plurality of support towers with one or more controllable motors, water emitters, a controllable valve, and a control system that performs one or more of the aforementioned method steps.