Abstract: The present disclosure generally provides a fertigation process comprising providing a nitrification inhibitor composition; providing a urea ammonium nitrate fertilizer composition; combining the nitrification inhibitor composition with the fertilizer composition; and applying the combined composition during a growing cycle of a crop using an overhead irrigation system. The present disclosure also relates to this fertigation process wherein the nitrification inhibitor comprises dicyandiamide and dimethyl sulfoxide and the crop is corn.

Abstract: Solvent systems for the formulation of alkyl thiophosphoric triamide urease inhibitors, that provide stable dispersion of alkyl thiophosphoric triamides for even distribution (in low or high concentrations) onto fertilizers containing urea in liquid or solid form.

Abstract: A system for controlling a networked array of dispensing devices for dispensing particulate matter may include local controllers connected to a parent controller. The parent controller may control an array of local controllers configured according to a network architecture. Each local controller may control one or more local dry chemical dispensing machines. In this way, the parent controller may control multiple dry chemical dispensing units over a network from a central location. In addition, the parent controller may directly control conventional liquid dispensers over the network. The parent and local controllers may be implemented using, for example, programmable logic controllers (PLCs).

Abstract: A device for dispensing particulate matter may include a gravimetric sensor to measure the weight of particulate matter mixed with a fluid carrier. In an illustrative embodiment, a dry chemical inductor includes a bin for containing particulate matter, a conduit for transporting a stream of liquid carrier, and a valve for controllably releasing a particulate matter from the bin into the conduit. The device may further include a gravimetric sensor, such as an electronic scale or a load cell, for measuring the weight of particulate matter released from the bin. A controller may receive signals from the gravimetric sensor and actuate the valve to interrupt the flow of particulate matter when the desired amount of particulate matter has been released.

Abstract: A device and method for dispensing precise amounts of dry particulate matter, such as agricultural chemicals, directly into a liquid carrier stream, such as a flow of water, and a method of employing such a device to distribute chemicals. The device includes a bin for holding a quantity of particulate matter, a conduit for transporting a stream of liquid carrier, and a meter at the bottom of the bin for controllably releasing a desired amount of the particulate matter from the bin into the conduit while disallowing entry of the liquid carrier to the bin. The bin, conduit and meter are all mounted upon a portable structure for transportation with particulate matter in the bin. The meter includes a multi-vaned rotor turned by a controlled motor, and defines discrete pockets of known volume. The operator simply connects the device to a flow of water and keys into the controller an amount of material to be released.