Irrigation sprinklers; Agricultural irrigation units; Drip irrigation emitters; Water treatment apparatus for infusing irrigation water with liquid fertilizer; Pressure-activated pop-up water sprinklers mounted on non-metal fence panels and posts; Irrigation spray nozzles; Lawn sprinkler systems comprising pumps, valves and filters; Drip irrigation emitters for agricultural use; Watering machines for horticultural purposes; Watering machines for agricultural purposes; Water purification appar...