A fertilizer granule containing a core containing, phosphoric acid and an urea adduct containing urea and calcium sulfate, and a coat containing an urease inhibitor and a base, the coat forming a coating on an outer surface of the core. Methods of making and using the fertilizer granule are also disclosed.

A fertilizer granule containing a core containing, phosphoric acid and an urea adduct containing urea and calcium sulfate, and a coat containing an urease inhibitor and a base, the coat forming a coating on an outer surface of the core. Methods of making and using the fertilizer granule are also disclosed.

Disclosed are compositions and methods of making a liquid fertilizer additive of biodegradable polymeric and/or oligomeric nitrification inhibitors comprised of utilizing a non-aqueous polar, aprotic organo liquid (NAPAOL) as the reaction medium for the reaction of aldehyde(s) with cyano-containing nitrification inhibitors that have one or more aldehyde reactive groups selected from the group consisting of a) primary amines, b) secondary amines, c) amides, d) thiols, e) hydroxyls and f) phenols.

Disclosed are compositions and methods of making a liquid fertilizer additive of biodegradable polymeric and/or oligomeric nitrification inhibitors comprised of utilizing a non-aqueous polar, aprotic organo liquid (NAPAOL) as the reaction medium for the reaction of aldehyde(s) with cyano-containing nitrification inhibitors that have one or more aldehyde reactive groups selected from the group consisting of a) primary amines, b) secondary amines, c) amides, d) thiols, e) hydroxyls and f) phenols.

The invention relates to a coated granular fertilizer, preferably wherein granules are sulfate-based or phosphate-based. When sulfate-based granules, as in ammonium sulfate, the coating substance is an inorganic salt of alkaline earth elements, preferably calcium, such that when applied to the surface of fertilizers, forms calcium sulfate, preferably a calcium sulfate-dihydrate, as a protective coating. For a reactive coating of a thiosulfate, free sulfuric acid present on the granule reacts to provide an elemental sulfur coating. For ammonium phosphate-based granules, coatings may comprise compounds of Ca.sup.++, Al.sup.+++ and/or Fe.sup.+++ salts thereby forming a calcium, an aluminum, an iron, or mixed cation phosphate protective coating. Thiosulfate is also effective with phosphate-based granules which are manufactured with sulfuric acid. Granules coated according to the disclosure have advantageous properties as the coating can be applied in a specified and sparing manner due to its tendency to adhere to surfaces during the reaction. Coated fertilizer granules of the disclosure are also advantageous in that, with regard to the applied amount of coating, they provide increased resistance to dusting in long term warehouse storage, to moisture uptake and to oxidative heating. Coating components also add nutrients to plants that can provide nutrients over a longer period of time such as a slow-release characteristic.

The invention relates to a coated granular fertilizer, preferably wherein granules are sulfate-based or phosphate-based. When sulfate-based granules, as in ammonium sulfate, the coating substance is an inorganic salt of alkaline earth elements, preferably calcium, such that when applied to the surface of fertilizers, forms calcium sulfate, preferably a calcium sulfate-dihydrate, as a protective coating. For a reactive coating of a thiosulfate, free sulfuric acid present on the granule reacts to provide an elemental sulfur coating. For ammonium phosphate-based granules, coatings may comprise compounds of Ca.sup.++, Al.sup.+++ and/or Fe.sup.+++ salts thereby forming a calcium, an aluminum, an iron, or mixed cation phosphate protective coating. Thiosulfate is also effective with phosphate-based granules which are manufactured with sulfuric acid. Granules coated according to the disclosure have advantageous properties as the coating can be applied in a specified and sparing manner due to its tendency to adhere to surfaces during the reaction. Coated fertilizer granules of the disclosure are also advantageous in that, with regard to the applied amount of coating, they provide increased resistance to dusting in long term warehouse storage, to moisture uptake and to oxidative heating. Coating components also add nutrients to plants that can provide nutrients over a longer period of time such as a slow-release characteristic.

The invention relates to a coated granular fertilizer, preferably wherein granules are sulfate-based or phosphate-based. When sulfate-based granules, as in ammonium sulfate, the coating substance is an inorganic salt of alkaline earth elements, preferably calcium, such that when applied to the surface of fertilizers, forms calcium sulfate, preferably a calcium sulfate-dihydrate, as a protective coating. For a reactive coating of a thiosulfate, free sulfuric acid present on the granule reacts to provide an elemental sulfur coating. For ammonium phosphate-based granules, coatings may comprise compounds of Ca.sup.++, Al.sup.+++ and/or Fe.sup.+++ salts thereby forming a calcium, an aluminum, an iron, or mixed cation phosphate protective coating. Thiosulfate is also effective with phosphate-based granules which are manufactured with sulfuric acid. Granules coated according to the disclosure have advantageous properties as the coating can be applied in a specified and sparing manner due to its tendency to adhere to surfaces during the reaction. Coated fertilizer granules of the disclosure are also advantageous in that, with regard to the applied amount of coating, they provide increased resistance to dusting in long term warehouse storage, to moisture uptake and to oxidative heating. Coating components also add nutrients to plants that can provide nutrients over a longer period of time such as a slow-release characteristic.

A combined microalgae and mycorrhizal fungi granular formulation includes a microalgae inoculant combined with a mycorrhizal fungi inoculant with demineralized water to maintain moisture and applied to carrier granules such as a natural clay-based or mineral-based material. The coated granules are dried and may be applied to agricultural areas in dried granular form.

A combined microalgae and mycorrhizal fungi granular formulation includes a microalgae inoculant combined with a mycorrhizal fungi inoculant with demineralized water to maintain moisture and applied to carrier granules such as a natural clay-based or mineral-based material. The coated granules are dried and may be applied to agricultural areas in dried granular form.

A compositions of new nitrification/volatilization inhibitor products that also contain a liquid solvent, a carboxylated polymer component, a nitrification inhibitor, and/or a volatilization inhibitor that is either uniformly applied to granular fertilizers (containing nitrogen or not containing nitrogen), or to a liquid fertilizer product in a tank. According to an aspect of the invention, there is provided a product comprising: from about 1-5 parts liquid solvent, from about 0.5-5 parts carboxylated polymer, from about 0.5-5 parts nitrification inhibitor, from 0.5-5 parts volatilization inhibitor, and optionally from about 0-5 parts sugar alcohol.