초록 ▼

Fertilizer or other liquid crop treatment is applied to the ground using a direct injection jet with a nozzle position closely adjacent the ground and forming a jet of the liquid directed into the ground. A solenoid controlled valve cyclically halts the flow of fluid to form short pulses of the flui

Fertilizer or other liquid crop treatment is applied to the ground using a direct injection jet with a nozzle position closely adjacent the ground and forming a jet of the liquid directed into the ground. A solenoid controlled valve cyclically halts the flow of fluid to form short pulses of the fluid so that the fluid can be supplied in concentrate form while generating sufficient energy to achieve a depth of penetration in the range 2 to 4 inches. The solenoid controlled valve and nozzle is mounted on a skid member carried on a depth control wheel. The period of the pulses is arranged so that the length of a pulse is very short relative to the spacing between the pulses with the spacing between adjacent rows formed by adjacent heads being substantially equal to the spacing between the individual pulses.

대표청구항 ▼

A method of applying a crop treatment liquid into the ground for accessibility by a crop on the ground, the method comprising supplying the liquid in a container, transporting the container across the ground, pumping liquid from the container to an injection nozzle under a constant high pressure of

A method of applying a crop treatment liquid into the ground for accessibility by a crop on the ground, the method comprising supplying the liquid in a container, transporting the container across the ground, pumping liquid from the container to an injection nozzle under a constant high pressure of the order of 6,000 psi, mounting the nozzle for movement across the ground at a substantially constant height closely adjacent the ground with the nozzle arranged in a direction to inject the liquid downwardly into the ground, passing the liquid through an orifice in the nozzle having a transverse dimension in the range 0.015 to 0.050 inches to generate a high velocity solid stream jet of the liquid such that the liquid is driven into the ground to a depth below the surface of the ground, providing a valve having a valve orifice and a valve closure member between the pump and the nozzle orifice at a position closely adjacent the nozzle orifice, supplying the constant pressure liquid to the valve, operating the valve closure member in timed sequence such that the valve orifice is opened in repeated cycles for a time less than 0.0057 seconds and is closed between each opening and the next for a time greater than the time it is opened such that the liquid flow is cyclically halted and restarted to generate spaced pulses of the liquid and passing the pulses from the valve directly to the orifice.