| 摘要 |
A method for the moisture activated release and transport in soil of a substantially non-volatile, lipophilic biologically active agent having a solubility in water of less than about 0.1% by weight, comprising contacting said soil with a composition containing a biologically effective amount of said active agent entrapped within an association complex of a polycarboxylate polymer and a poly (lower) alkoxylated surfactant, such that upon application of moisture the rate of release and transport of said active agent from said composition is dependent upon (i) the rate of moisture activated dissociation of, and resultant release of said surfactant from, the complex, and (ii) the rate of diffusion of the released surfactant through the moist soil; and compositions for use in said method. |
