The release of cyanatryn from a controlled‐release formulation into flowing water

摘要

AbstractThe problem of maintaining a sufficient concentration of the herbicide cyanatryn in flowing water for a sufficient time to control aquatic weeds has been solved by using a controlled‐release pellet formulation. The rate of release of the herbicide depends primarily on the rate of diffusion within the clay matrix and is a function of the formulation ingredients and the degree of compaction achieved during manufacture. Release appears to be independent of water velocity but the concentration produced downstream of the application point depends on the volume of water flowing in unit time and the mass of herbicide use