Abstract: A silver-containing composition is provided. The composition comprises (a) silver ion, (b) a polymer that has pendant unsaturated or aromatic heterocycles, and (c) solid particles having median diameter of 2 mm or smaller, wherein some or all of said particles have a coating comprising said silver ion and said polymer (b).

Abstract: A method is provided for making a silver-containing concentrate. The method comprises the step of isolating the solid materials from a liquid composition that comprises (a) silver cation, (b) a polymer that has pendant unsaturated or aromatic heterocycles, and (c) solid particles having median diameter of 2 mm or smaller.

Abstract: The present invention relates to compositions, methods and materials for delivering a cyclopropene or other active ingredient to a plant. Provided are compositions comprising double encapsulated particles having a waxy coating and being imbedded in a resin matrix. Such double encapsulated particles are further coated with Pickering particles and suspended in an oil. The double encapsulated particles comprise a volatile compound (for example, 1-MCP complex powder) as an active ingredient. Also provided are methods for preparing such compositions and methods for using such compositions.