A homogeneous fertilizer granule comprises slow-release (e.g. struvite) and fast release sources of phosphorus (P). The homogeneous fertilizer granule may further contain other essential nutrients and micronutrients required by plants. A number of methods may be used to make such granules. One method includes introducing a struvite slurry or fines and a liquid supply of water soluble P into a granulator. Alternatively, dry raw materials can be mixed with water/steam and/or another binder prior to being fed into a granulator. In another embodiment, pre-mixed dry raw materials are mechanically compacted and crushed to yield homogeneous fertilizer particles.

A homogeneous fertilizer granule comprises slow-release (e.g. struvite) and fast release sources of phosphorus (P). The homogeneous fertilizer granule may further contain other essential nutrients and micronutrients required by plants. A number of methods may be used to make such granules. One method includes introducing a struvite slurry or fines and a liquid supply of water soluble P into a granulator. Alternatively, dry raw materials can be mixed with water/steam and/or another binder prior to being fed into a granulator. In another embodiment, pre-mixed dry raw materials are mechanically compacted and crushed to yield homogeneous fertilizer particles.

Embodiments herein generally relate to a process for producing a solid phosphate fertilizer comprising micronized elemental sulfur. The process of producing a solid fertilizer comprises the steps of: (a) combining micronized sulfur with one or both of phosphate rock and phosphoric acid; (b) reacting the phosphate rock and phosphoric acid to produce TSP mixed with micronized sulfur particles; and (c) granulating the TSP and micronized sulfur into fertilizer granules.

Embodiments herein generally relate to a process for producing a solid phosphate fertilizer comprising micronized elemental sulfur. The process of producing a solid fertilizer comprises the steps of: (a) combining micronized sulfur with one or both of phosphate rock and phosphoric acid; (b) reacting the phosphate rock and phosphoric acid to produce TSP mixed with micronized sulfur particles; and (c) granulating the TSP and micronized sulfur into fertilizer granules.

A coating matrix operable for coating fertilizer particles. The coating matrix is made from a whole biomass composition, in which said whole biomass composition comprises at least a microalgae and a macroalgae reduced to a powder form, mixed with an aqueous solution of alkali metal hydroxide or alkaline earth metal hydroxide at a concentration ranging from 0.1% to 20% (w/v). The mixture is mixed at about 7 pH to about 9.5 pH which produces a cross-linked polysaccharide.

A coating matrix operable for coating fertilizer particles. The coating matrix is made from a whole biomass composition, in which said whole biomass composition comprises at least a microalgae and a macroalgae reduced to a powder form, mixed with an aqueous solution of alkali metal hydroxide or alkaline earth metal hydroxide at a concentration ranging from 0.1% to 20% (w/v). The mixture is mixed at about 7 pH to about 9.5 pH which produces a cross-linked polysaccharide.

A method of calcination includes providing a raw material including whitlockite Ca.sub.9(Mg,Fe.sup.2+)[PO.sub.3(OH)|(PO.sub.4).sub.6], and/or iron phosphate FePO.sub.4, and/or aluminium phosphate AlPO.sub.4 and/or fluorapatite Ca.sub.5(PO.sub.4).sub.3F; providing an alkaline-sulfuric compound as an additive; and calcining a mixture of the raw material with the additive to obtain a product, including a citrate soluble phosphate compound.

The present invention is a plant fertilizer product comprising at least one organic potassium source and at least one bacillus strain of rhizobacteria.

The present invention is a plant fertilizer product comprising at least one organic potassium source and at least one bacillus strain of rhizobacteria.

Novel granular fertilizers and methods of making those fertilizers are provided. The method utilized involves recycling streams, including one that provides water having dissolved solids therein, with that water being used during the mixing and granulation process. This method results in a low-moisture, hard, substantially spherical granule, which can include any number of macronutrients and/or micronutrients. Advantageously, the granular fertilizer can be applied to the soil around plants to supply those plants with the necessary nutrients.