Irrigation method and control system

Liquid flow control valve

Liquid tension-sensitive gas valves

Matric potential responder improvements

Method and apparatus for irrigation control

Method and apparatus for measuring water content

Method and device for automatic irrigation

Moisture and pressure sensitive fluid control circuit

Moisture monitor and control system

Moisture monitoring system

Moisture sensing switch

Moisture sensor

Moisture sensor

Moisture sensor and control system for sprinklers and method...

Moisture sensor and irrigation control system

Moisture-actuated apparatus for controlling the flow of water

Moisture-responsive valve

Moisture-responsive valve assembly

Multiplexed automatic control system

Override control system for an automatic sprinkler system