Drip Fertigation Using Dairy Cow Slurry Processed by Solid-Liquid Separation and Aerobic Digestion

Abstract

We devised method for applying liquid compost and water to plants by using commercially available drip device fertigation. Generally, there are many insoluble contents in livestock manure. These particle size is so big that the existence of insoluble contents makes the application difficult by using drip device. In our system, after solid-liquid separation by Screw Press, the liquid was aerated and purified. On the other hand, the insoluble contents was mechanically separated to the solid. Therefore, the solid component of the liquid was broken up by biodegradation well. These made it possible that drip holes of irrigation tube didn’t stack. As a result, applying this liquid fertilizer to cucumber in greenhouse by using drip device, no stacking problems happened and cultivation of cucumber went well.