Plant propagation medium and methods of making and using it

Abstract

The present disclosure provides a hydroseeding substrate comprising primary solids from an anaerobic digester, a cover composition comprising bentonite clay and a water-dispersible polymer or starch, and a surface-treated hydroxypropyl methyl cellulose (HPMC). The primary solids may comprise fibrous solids from dairy, poultry, hog, or cattle waste. The water-dispersible polymer may include one or more cellulose derivatives. The surface-treated HPMC may be present in an amount of 0.1 to 20 weight percent of the substrate. The hydroseeding substrate may further include a fertilizer and a soil adjuvant. The disclosure also provides a method of producing a dissolvable fertilizer package and the resulting package, comprising a dried mixture of primary solids from an anaerobic digester and nutrients contained within a tube formed from a polyvinyl alcohol film that is 85-90% hydrolyzed.