Abstract
A novel timed-release system with a certain lag time (or release-suppression time) of pesticides has been developed using coated water-swelling granules including a slightly water-soluble herbicide. The lag time and release profile of the herbicide are controlled by the polymer composition of the membrane that contains low-density polyethylene (LDPE), talc and water-permeable materials such as surfactant, highly water-absorbent resin (HWAR) and paraffin.
