Moderated release aquatic herbicide formulations

摘要

Described are preferred solid herbicidal formulations that include one or more herbicides in combination with a solid carrier, as well as methods of manufacture and use thereof. Solid herbicidal formulations are designed to deliver a moderated release of the incorporated load of herbicidal agent(s), for example to enhance uptake by target plants and/or the ability to spatially control a plant population within a body of water that exhibits flow.

主权项

1. A method for controlling a submersed aquatic weed in a water body, comprising:
applying to the bottom of the water body a granular aquatic herbicide comprising a particulate carrier incorporating one or more systemic herbicidal agents, wherein the granular aquatic herbicide releases less than about 70% by weight of the one or more systemic herbicidal agents within 24 hours after said applying and at least about 90% by weight of the one or more systemic herbicidal agents within 288 hours after said applying, wherein said particles of the particulate carrier have a polymeric layer effective to retard release of the one or more systemic herbicidal agents from the particles, wherein said particles of the particulate carrier have a density greater than water, and wherein the one or more systemic herbicidal agents are exposed to and taken up by roots of the submersed aquatic weed, and then translocated to aboveground tissue of the submersed aquatic weed.