Abstract: A method of moving at least two irrigation spans across a ground surface of a field may include receiving an initial movement control signal corresponding to a user-selected fluid application rate, determining the user-selected fluid application rate from the initial movement control signal, determining a position of at least one span in the field, modifying the initial movement control signal to a modified movement control signal according to a predetermined modification factor, with a value of the modification factor varying according to a position of the span in the field such that the modification factor varies among span positions, and sending the modified movement control signal to the drive motor control. A system is also disclosed.

Abstract: A method of optimizing water applications of a center pivot irrigation system. The field is mapped to determine the yield potentials of various parts of the field. The field map is divided into sectors or zones and the yield potentials of those sectors or zones are determined. The number of sectors or zones to be irrigated is dependent upon the water flow available to the irrigation system. Only those sectors or zones which can receive adequate irrigating water to achieve the predetermined water application depth will be irrigated.

Abstract: A method of optimizing water applications of a center pivot irrigation system. The field is mapped to determine the yield potentials of various parts of the field. The field map is divided into sectors or zones and the yield potentials of those sectors or zones are determined. The number of sectors or zones to be irrigated is dependent upon the water flow available to the irrigation system. Only those sectors or zones which can receive adequate irrigating water to achieve the predetermined water application depth will be irrigated.

Abstract: A system that based on changes in agricultural crop or plant characteristics or dynamics, e.g. heat stress, water deficit stress, stem growth, leaf thickness, plant color, nutrient composition, etc., or changes in environmental conditions, e.g., temperature, wind, pressure, relative humidity, dew point, precipitation, soil moisture, solar radiation, etc. or a combination of both, e.g., evapotranspiration, either automatically increases or decreases the speed or rate of movement or rotation of a mechanized irrigation system, e.g. center pivot, corner, linear, or lateral move irrigation system or similar, or reports a recommended increased or decreased speed or rate of movement or rotation of a mechanized irrigation system either directly or indirectly to the end user. The system responds directly or indirectly to data outputted from monitoring systems that gather and compile environmental (non-biotic), biotic or similar information from agricultural fields and crops.

Abstract: A system that based on changes in agricultural crop or plant characteristics or dynamics, e.g., heat stress, water deficit stress, stem growth, leaf thickness, plant turgidity, plant color, nutrient composition, etc., or changes in environmental conditions, e.g., temperature, wind, pressure, relative humidity, dew point, precipitation, soil moisture, solar radiation, etc. or a combination of both, e.g., evapotranspiration, either automatically increases or decreases the speed or rate of movement or rotation of a mechanized irrigation system, e.g., center pivot, corner, linear, or lateral move irrigation system or similar, or reports a recommended increased or decreased speed or rate of movement or rotation of a mechanized irrigation system either directly or indirectly to the end user. The system responds directly or indirectly to data outputted from monitoring systems that gather and compile environmental (non-biotic), biotic or similar information from agricultural fields and crops.

Abstract: A method is described for automatically adjusting the water application rate of an irrigation system which is movable over an agricultural field, comprising the steps of: (a) processing one or more main field layers of geospatial data; (b) generating variable irrigation management zones dependent on the irrigation system in the field; and (c) adjusting water application from the irrigation system dependent on the spatial location of the irrigation system in the field and the underlying processed geospatial field data previously determined. The method may also use the step of utilizing one or more of the field layers to identify at least one optional crop sensor location within the field. The water application rate is adjusted by increasing or decreasing the speed of the irrigation system or by turning the irrigation system on or by turning the irrigation system off.