The present invention provides novel phosphate-solubilizing fungal strains, compositions comprising novel phosphate-solubilizing fungal strains, and methods of using novel phosphate-solubilizing fungal strains to increase the availability of phosphate for plant uptake in soil. In some embodiments, one or more of the novel phosphate-solubilizing fungal strains is coated onto a seed.

The present invention provides novel phosphate-solubilizing fungal strains, compositions comprising novel phosphate-solubilizing fungal strains, and methods of using novel phosphate-solubilizing fungal strains to increase the availability of phosphate for plant uptake in soil. In some embodiments, one or more of the novel phosphate-solubilizing fungal strains is coated onto a seed.

Provided is a method of manufacturing phosphate fertilizer that comprises dicalcium phosphate, the method comprising providing milled phosphorus-containing rock having a total phosphorus content of at least about 15% P by weight, mixing the milled phosphate-containing rock with a mineral acid in a reaction vessel to produce a superphosphate product, and mixing the superphosphate product with a calcium-source reverting agent and a magnesium-source reverting agent to produce a reverted product, the calcium-source reverting agent comprising at least about 20% by weight of the total reverting agent of calcium oxide with a calcium carbonate equivalence of at least about 134%, and the magnesium-source reverting agent providing a magnesium source and comprising at least about 20% by weight of the total reverting agent of magnesium source with a calcium carbonate equivalence of at least about 80%, to produce a granulated cured reverted product having a product yield of at least about 1.90 or of at least about 1.77, and a moisture content of less than 3%.

Fertilizer granules containing elemental sulfur and a hydrogel which expands or swells in the soil to more readily disperse the elemental sulfur surface throughout the soil, which increases the elemental sulfur surface area available for oxidation, and ultimately uptake of sulfur by the plant. The elemental sulfur and hydrogel can be added to a fertilizer composition as either an exterior coating or co-granulated with the base fertilizer composition.

Fertilizer granules containing elemental sulfur and a hydrogel which expands or swells in the soil to more readily disperse the elemental sulfur surface throughout the soil, which increases the elemental sulfur surface area available for oxidation, and ultimately uptake of sulfur by the plant. The elemental sulfur and hydrogel can be added to a fertilizer composition as either an exterior coating or co-granulated with the base fertilizer composition.

Fertilizer granules containing elemental sulfur and a hydrogel which expands or swells in the soil to more readily disperse the elemental sulfur surface throughout the soil, which increases the elemental sulfur surface area available for oxidation, and ultimately uptake of sulfur by the plant. The elemental sulfur and hydrogel can be added to a fertilizer composition as either an exterior coating or co-granulated with the base fertilizer composition.

Fertilizer granules containing elemental sulfur and a hydrogel which expands or swells in the soil to more readily disperse the elemental sulfur surface throughout the soil, which increases the elemental sulfur surface area available for oxidation, and ultimately uptake of sulfur by the plant. The elemental sulfur and hydrogel can be added to a fertilizer composition as either an exterior coating or co-granulated with the base fertilizer composition.

Fertilizer granules containing elemental sulfur and a hydrogel which expands or swells in the soil to more readily disperse the elemental sulfur surface throughout the soil, which increases the elemental sulfur surface area available for oxidation, and ultimately uptake of sulfur by the plant. The elemental sulfur and hydrogel can be added to a fertilizer composition as either an exterior coating or co-granulated with the base fertilizer composition.

Fertilizer granules containing elemental sulfur and a hydrogel which expands or swells in the soil to more readily disperse the elemental sulfur surface throughout the soil, which increases the elemental sulfur surface area available for oxidation, and ultimately uptake of sulfur by the plant. The elemental sulfur and hydrogel can be added to a fertilizer composition as either an exterior coating or co-granulated with the base fertilizer composition.

Seaweed and/or seaweed extract coated fertilizer core, methods for their use, and production thereof, are disclosed. The fertilizer core, coated by the seaweed and/or seaweed coating, can contain 50 wt. % or more, based on the total weight of the core, of a urea-based fertilizer, or an inorganic fertilizer containing one or more of nitrogen, phosphorus, or potassium, or a combination thereof. The coating can include a seaweed and/or seaweed extract, and optionally contain or exclude gypsum, water insoluble polymer(s) other than native water insoluble polymers present in the seaweed or extract thereof, water, solubilizing agent(s), anticaking agent(s), and/or binding agent(s).