An irrigation system broadly comprising a number of irrigation spans and a control system configured to operate single speed drive motors of the irrigation spans in a start-up mode, full speed mode, and wind-down mode. In the start-up mode, the motor controller gradually increases the drive motor speed from 0 rpms to a full speed by ramping a voltage applied to the drive motor from a starting voltage to a full speed voltage according to a start-up voltage profile over a start-up time interval. In the full speed mode, the motor controller operates the drive motor at a full speed voltage. In the wind-down mode, the motor controller gradually decreases the drive motor speed from full speed to 0 rpms by ramping the voltage applied to the drive motor from the full speed voltage to an ending voltage according to a wind-down voltage profile over a wind-down time interval.

The invention relates to the application of liquid active substances with the acid of a portable spray device. The subject matter of the present invention is a system comprising a portable spray device and a replaceable cartridge that contains an active substance concentrate. The invention also relates to method for applying a liquid active substance formulation. In addition, the invention discloses a replaceable cartridge that has a memory unit in which information is stored relating to an adjustable dilution ratio for the active substance concentrate contained in the cartridge. The invention also relates to a spray device comprising a control unit that can be read out a memory unit of cartridge attached to the spray device and, on the basis of the read out information, adjust a dilution ratio for the active substance concentrate contained in the cartridge.

An agricultural implement for applying an active ingredient to a geographic area includes a chassis, and at least one active ingredient tank. Each active ingredient tank is removably positioned on and carried by the chassis. Each active ingredient tank contains an active ingredient therein which is to be applied to the geographic area. Each active ingredient tank has an identification (ID) tag representing data associated with the active ingredient. An electrical reader carried by the chassis is configured for reading the ID tag and providing an output signal. An electrical processing circuit is coupled with the reader and receives the output signal.

The invention relates to the application of liquid active substances with the aid of a portable spray device. The subject matter of the present invention is a portable device for applying active substances, and a method for applying active substances with the aid of a portable spray device.

The present invention relates to the application of liquid active substances. The subject matter of the present invention is a system, a method and a computer program product for the application of an active substance concentrate from a replaceable cartridge in a diluted form onto a target object with the aid of a portable spray device, wherein important parameters of the spray process are exchanged between the cartridge and/or the spray device and/or an external computer system.

A system for dispensing multiple low rate agricultural products, includes an agricultural product metering system, a number of agricultural product tubes, and an agricultural product metering system. The agricultural product metering system is operably connected to sources of low rate agricultural products. The agricultural product tubes are operatively connected to the agricultural product metering system. The agricultural product metering system is configured to dispense liquid low rate agricultural products at a low rate defined as below 3.7 fluid ounces per 1000 row feet.

Systems and methods of the present disclosure include the use of a tracer in agricultural spray solutions, and preferably a metal tracer, to determine if off-target drift of an active ingredient (AI) is based on drift caused during application or volatility of AI after application.

The present invention relates to a system for dispersing live biological control agents, comprising a reservoir of live biological control agents in liquid phase, a source of compressed air, a nozzle comprising a tip, the biological control agent line having a liquid phase outlet for a liquid phase jet to exit the tip in a main direction, and the compressed air line having at least one air outlet, the tip comprising a wall, the liquid phase outlet being defined by an opening in the wall of the tip, the one or more air outlets being arranged in the wall of the tip, the shape of the wall being configured to direct a flow of main air exiting the one or more air outlets in a converging manner towards the liquid phase jet.

A chemical delivery system with dilution control includes a chemical delivery manifold with eductors each fluidly coupled to a valve configured to operate independently to selectively control flow of a motive fluid through a respective eductor. Metering devices are coupled to concentrated chemical lines and configured to control a rate of dispensing of the concentrated chemical passing therethrough to each of the eductors. Concentrated chemical flow rate sensors are coupled to each of these individual concentrated chemical lines and configured to measure a flow rate of the concentrated chemicals therethrough. A control unit receives a measured flow rate from each flow rate sensor and causes a respective metering device to adjust the rate of dispensing for one or more concentrated chemicals to control the flow rates of the concentrated chemicals and thereby individually control a dilution of each concentrated chemical in the motive fluid.

The invention comprises a method and apparatus for dispensing a biocide, comprising: a container and a biocide formulation in the container, the biocide formulation comprising: (1) the biocide and a solvent, the biocide comprising a protonated polymer comprising repeating charged units; (2) a total cationic charge density in a range of 0.005 to 0.95 meq/g, at least ten percent of the total cationic charge density from charges of non-quaternary amines of the protonated polymer; (3) an activity coefficient, ?, of a protonated site of the protonated polymer, of greater than 0.7; and (4) a counterion chloride concentration of less than 900 ppm.