The present invention comprises one or more organic solvents that create a non-aqueous organo solvent delivery system, (NOSDS), and one or more Organo Polycarboxylate functionalities, OPCF, that results in a stable, non-aqueous solution that can easily, safely, evenly and economically coat nitrogen source granules and/or be added to a mobile liquid form of a nitrogen source such as an aqueous dispersion, pressurized ammonia gas or molten urea and/or molten modified urea. Using these solvents provides more flexibility for nitrogen source manufacturers to produce nitrogen sources designed for a particular soil or plant. The liquid solutions are comprised of NOSDS and OPCFs and one or more of a) nitrification inhibitors, b) urease inhibitors, c) pesticides, d) fungicides, e) herbicides, f) insecticides and g) micronutrients.

A coating is applied in one or more layers on a granular material, such as a granular fertilizer material or the like. The coating may include a diisocyanate in either pure form or partially polymerized form, a polyol or polyol mix, and optionally a wax. The polyol or polyol mix may be, for example, a polyester polyol, a polyether polyol, or combinations thereof. In some examples, the polyol or polyol mix may be an aliphatic glycerine initiated polyether polyol, an aliphatic amine initiated trifunctional polyol, castor oil or castor oil derivative, or ethylene diamine that has been propoxylated or ethoxylated, and combinations thereof. The coating is reacted on the granular material.

A coating is applied in one or more layers on a granular material, such as a granular fertilizer material or the like. The coating may include a diisocyanate in either pure form or partially polymerized form, a polyol or polyol mix, and optionally a wax. The polyol or polyol mix may be, for example, a polyester polyol, a polyether polyol, or combinations thereof. In some examples, the polyol or polyol mix may be an aliphatic glycerine initiated polyether polyol, an aliphatic amine initiated trifunctional polyol, castor oil or castor oil derivative, or ethylene diamine that has been propoxylated or ethoxylated, and combinations thereof. The coating is reacted on the granular material.

The present invention relates to fertilizer particles encapsulated in modified chitosan and a method of obtaining them. The particles described in this invention allow a controlled, moderate, or gradual release of an active material from a reserve substrate to another medium, in order to increase the effectiveness of the active material by prolonging its action over time. This invention is characterized in that the active components of said formulations are capable of causing a synergistic effect, considerably increasing the growth and development of plants.

A process of granulation of a urea melt, comprising: adding a first additive containing carboxymethyl starch to one or more first stage(s) of the granulation process, to form a carboxymethyl starch containing inner layer of urea granules, and adding a second additive containing calcium lignosulfonate to one or more second stage(s) of the granulation process, downstream said first stages, to form granules with a coating containing calcium lignosulfonate.

A process of granulation of a urea melt, comprising: adding a first additive containing carboxymethyl starch to one or more first stage(s) of the granulation process, to form a carboxymethyl starch containing inner layer of urea granules, and adding a second additive containing calcium lignosulfonate to one or more second stage(s) of the granulation process, downstream said first stages, to form granules with a coating containing calcium lignosulfonate.

A process for producing a coated particle to provide controlled release characteristics. In this process the mixing of the substrate and coating is made in a mixing device and that mixture is then transferred to a reactor vessel different from the mixing device where the chemical curing of the coating over the particles takes place. Several layers of coating can be applied by repeating the steps and it can be run in a fully continuous manner.

A moisture barrier coating includes the reaction product of (A) at least one polyol and (B) at least one polyisocyanate. The moisture barrier coating further includes at least one amorphous thermoplastic material that forms a homogeneous mixture with the polyol, and is nonreactive with the polyol and with the polyisocyanate. A controlled release fertilizer, a method for the production of a controlled release fertilizer, and a moisture barrier coating composition are also disclosed.

The invention relates to a synergistic mixture of urease inhibitor and nitrification inhibitor for the treatment of urea-containing fertilizers, more particularly having an improved urease-inhibitory effect, to the use thereof, and to urea-containing fertilizers comprising said mixture.

The present invention relates to improving the efficiency of man-made and/or natural organic-based animal manure fertilizers by administration of formulations containing poly(organic acids), [P(OA)]s, and/or their salts dispersed in a Non-aqueous Organic Solvent Delivery System (NOSDS). Utilizing a NOSDS allows for coating all components in a fertilizer formulation including but not limited to Urea, Manure, mono-ammonium phosphate (MAP), di-ammonium phosphate (DAP), solid micronutrients such as lime, zinc chloride, etc.) with a layer of [P(OA)]s and/or their salts that liberates, in a plant available form, the micronutrient metals and macronutrients, that are bound as insoluble salts and complexes in the soil. The carboxylic groups of a [P(OA)] that can exist within the [P(OA)] as carboxylic acids, carboxylic anhydrides and/or carboxylic imides, dispersed within the NOSDS, can be neutralized with one or more metals in the form of elemental metals, metal oxides, metal hydroxides, metal alkylates and metal carbonates and/or nitrogen containing compounds such as ammonia, ammonium hydroxide or organoamines to form a stable dispersion that can contain completely complexed micronutrients and provide the vehicle for the delivery of these nutrients to soils and/or as a coating to the surfaces fertilizer granules and seeds.