Described herein are implements and applicators for placement of fluid applications with respect to agricultural plants of agricultural fields. In one embodiment, a fluid applicator includes at least one applicator arm, a first nozzle disposed to apply fluid to a rhizosphere of the plants, and a second nozzle disposed to apply fluid between the row of plants.

Described herein are implements and applicators for placement of fluid applications with respect to agricultural plants of agricultural fields. In one embodiment, a fluid applicator for applying fluid to plants in rows in a field includes a frame, at least one applicator arm disposed in a rhizosphere of plants during fluid flow through the applicator, and a fluid conduit connected to the frame and disposed in the row between plants to deliver fluid to the row between plants.

Systems, methods and apparatus for monitoring soil properties and applying fertilizer during a planting operation. Various sensors are disposed in ground engaging components for monitoring soil properties. The ground engaging components may have structure for opening a side trench in the sidewalls of the seed trench and may include liquid application conduits for injecting liquid into the sidewalls of the resulting side trenches.

A fertilizer row unit including a toolbar coupling, first and second suspension members, a pressure applying device, a wheel assembly, a knife assembly and a wheel down pressure system. The first suspension member has a first end pivotally coupled to the toolbar coupling. The second suspension member is generally parallel to the first suspension member. The pressure applying device is coupled to the first or second suspension member. The wheel assembly has at least one wheel. The knife assembly is pivotally coupled to both the first and second suspension members. The wheel down pressure system is coupled to the wheel assembly, the wheel down pressure system substantially maintaining a selected pressure on the wheel assembly while the pressure applying device applies varying pressure to at least the first suspension member and the second suspension member.

A testing device for integrated irrigation and disinfection includes a centrifugal pump, pressure sensors, flow sensors, an ion concentration sensor, and a control system. The testing device has comprehensive functions of fertilization, spray and drip irrigation load simulation, water and fertilizer parameter detection, fertilizer absorbing channel parameter detection and backflow channel parameter detection. The detection of nutrient ion concentration in a nutrient solution is combined with the aspects of irrigation, dynamic preparation of a nutrient solution and disinfection of a nutrient solution, to realize a high-precision dynamic preparation of a nutrient solution and irrigation area load simulation, and satisfy the requirements on a test system during a research and development process of an irrigation and fertilization system. The testing device is applicable to the research on the techniques and the development of a system for precise irrigation and accurate preparation of a nutrient solution in the field of facility agriculture.

Described herein are implements and applicators for placement of fluid applications with respect to agricultural plants of agricultural fields. In one embodiment, a fluid applicator for applying fluids to plants in rows in a field includes a frame, a coulter connected to the frame and disposed to open a trench between the rows of plants, and at least one application member connected to the frame or to the coulter and disposed to apply fluid to a rhizosphere of the plants.

A bracket for use with an agriculture planter including a trailing arm frame defining a pivot point thereon may include an arm bracket assembly with first and second arms. Each arm may extend from a middle portion of the bracket. First and second implements may be rotatably mounted on mounting ends of two of the arms. The middle portion of the bracket may be pivotally coupled to the trailing arm frame at the pivot point.

Described herein are implements and application units for placement of fluid applications with respect to agricultural plants of agricultural fields. In one embodiment, an application unit includes a frame to be positioned in operation between two rows of plants and a plurality of flexible members coupled to the frame in operation such that the plurality of flexible members guide a lateral position of the frame to be approximately equidistant from the two rows of plants based upon whether at least one flexible member of the plurality of flexible members contacts one or more plants of the two rows of plants. The plurality of flexible members include a plurality of fluid outlets for spraying crop input in close proximity to the rows of plants.

Described herein are implements and applicators for placement of fluid applications with respect to agricultural plants of agricultural fields. In one embodiment, a fluid applicator for applying fluid to plants in rows in a field includes at least one applicator arm that is actuated by an actuator to move the applicator arm from a position in the row between plants to a position adjacent to the plant.

Described herein are implements and applicators for placement of fluid applications with respect to agricultural plants of agricultural fields. In one embodiment, a fluid applicator for applying fluids to plants in rows in a field includes a base, at least one flexible or pivoting application member connected to the base and disposed to apply fluid to the plants, and a stabilizer associated with the at least one flexible or pivoting application member. The stabilizer can reduce movement of the application member to provide a more consistent fluid application to the plants.