A method for applying spray liquid by an agricultural spraying device includes steps of: applying the spray liquid to an agricultural area by a plurality of spraying elements which are arranged on a sprayer boom of the agricultural spraying device, and detecting plant rows on the agricultural area during the application of the spray liquid, the spray liquid being applied by at least one spraying element with a first spray pattern in row areas of the agricultural area which have plant rows, and being applied by at least another spraying element with a second spray pattern in row-free areas of the agricultural area without plant rows.

Locations of seeds in a field can be identified using event-based processing or frequency-based processing. A material is applied to the field, based upon the seed locations.

A metering system includes a plurality of metering elements that are independently controllable. A calibration method of the present disclosure includes generating calibration factors for the individual metering elements. Also, a method of the present disclosure includes operating the metering elements according to the respective calibration factor.

Fertilizer compositions containing protocatechuic acid are provided. Such fertilizer compositions may be used to fertilize plants or plant seeds. The use of such fertilizer compositions to fertilize plants or plant seeds can provide benefits to the plants, e.g., enhanced plant growth, less browning, greater pest resistance, and better flowering, as well as health benefits to consumers of those plants.

A liquid metering system for an agricultural implement is modular, having one or more metering pumps for each crop row. The motors and pumps are individually controlled for precise application of the liquid input and are preferable electrically driven. A controller is configured to send commands including both positional and time components to the motors. The motors respond to the commands by changing in position, e.g., an angular position, across the given time.

A spreading support system includes a height difference acquisition unit to acquire a height difference in an agricultural field, a spread amount acquisition unit to acquire a planned spread amount which is an amount of an object to be spread on the agricultural field, a spread amount correction unit to correct, on the basis of the height difference acquired by the height difference acquisition unit, the planned spread amount acquired by the spread amount acquisition unit to obtain a corrected spread amount, and a spread amount output unit to output the corrected spread amount.

An agricultural applicator, that applies material to an agricultural field, includes an on-board, real-time image sensor that senses targets for the material to be applied. A controller controls applicators, such as nozzles or other applicators, to apply the material to the sensed targets

A nutrient amount determination device acquires number-of-users information indicating a number of users who use a sports facility within a predetermined period, the sports facility having lawn on which a sport is played. The nutrient amount determination device determines based on the acquired number-of-users information an application amount of at least one nutrient to be applied to the lawn of the sports facility by fertilization within the predetermined period.

A system for dispensing liquid agricultural products with seed includes an agricultural product supply system configured to dispense agricultural products. The system includes a seed tube for introducing seed. A tube-mounted nozzle is positioned on the seed tube for introducing liquid agricultural product into the seed tube. A gaseous fluid line is in fluid connection to a source of gaseous fluid. A gaseous fluid bubble generation assembly is in fluid communication with the gaseous fluid line. The gaseous fluid bubble generation assembly is configured to generate bubbles. The gaseous fluid bubble generation assembly is arranged and constructed so that when the gaseous fluid from the gaseous fluid line is passed therethrough bubbles are generated and agglomerated when the gaseous fluid encounters the liquid agricultural product within the seed tube.

A multiple variety seed meter for multi-variety row crop planting a segmented feed pipe system that may include a feed pipe with multiple passages that can be rotated to present one of multiple variety openings toward a seed pool in the seed meter to deliver a specific seed variety into the seed meter. The feed pipe may be an inner selector pipe concentrically nested for rotation in an outer sleeve that extends into the seed meter.