A system for coating fertilizer substrates is provided. The system comprises a mixing unit wherein the mixing unit comprises a container bowl having an inlet portion and an outlet portion wherein the inlet portion is operatively fastened to a hot air conduit having a blowing unit connected at one end. The invention also relates to a process for coating fertilizer substrates and the coated substrates thereof.

Agglomerated dispersible granules are disclosed including activated alumina particles and phosphate particles. The activated alumina particles have a porous structure and a plurality of electrically-charged binding sites disposed within the porous structure. The activated alumina particles and the phosphate particles are present in the agglomerated dispersible granules as distinct phases agglomerated together. A method for amending soil with buffered phosphorus is disclosed including physically blending and then agglomerating activated alumina particles with phosphate particles to form the agglomerated dispersible granules. The agglomerated dispersible granules are applied to soil with the activated alumina particles and the phosphate particles being present as distinct phases and the activated alumina particles being free of phosphate disposed within the porous structure. An activated alumina suspension is disclosed including activated alumina particles suspended as a dispersed phase in a continuous phase, the activated alumina particles having a particle size less than 200 m.

Agglomerated dispersible granules are disclosed including activated alumina particles and phosphate particles. The activated alumina particles have a porous structure and a plurality of electrically-charged binding sites disposed within the porous structure. The activated alumina particles and the phosphate particles are present in the agglomerated dispersible granules as distinct phases agglomerated together. A method for amending soil with buffered phosphorus is disclosed including physically blending and then agglomerating activated alumina particles with phosphate particles to form the agglomerated dispersible granules. The agglomerated dispersible granules are applied to soil with the activated alumina particles and the phosphate particles being present as distinct phases and the activated alumina particles being free of phosphate disposed within the porous structure. An activated alumina suspension is disclosed including activated alumina particles suspended as a dispersed phase in a continuous phase, the activated alumina particles having a particle size less than 200 m.

Disclosed is a fertilizer containing a mixture containing i) calcium ammonium phosphate (CaNH.sub.4PO.sub.4), magnesium ammonium phosphate (MgNH.sub.4PO.sub.4), or a combination of CaNH.sub.4PO.sub.4 and MgNH.sub.4PO.sub.4 and ii) a mixture of calcium sulfate and ammonium sulfate ((NH.sub.4).sub.2Ca(SO.sub.4).sub.2), a mixture of magnesium sulfate and ammonium sulfate ((NH.sub.4).sub.2Mg(SO.sub.4).sub.2), or a combination of the (NH.sub.4).sub.2Ca(SO.sub.4).sub.2, and the (NH.sub.4).sub.2Mg(SO.sub.4).sub.2. Methods of making and using the fertilizer are also disclosed.

Disclosed is a fertilizer containing a mixture containing i) calcium ammonium phosphate (CaNH.sub.4PO.sub.4), magnesium ammonium phosphate (MgNH.sub.4PO.sub.4), or a combination of CaNH.sub.4PO.sub.4 and MgNH.sub.4PO.sub.4 and ii) a mixture of calcium sulfate and ammonium sulfate ((NH.sub.4).sub.2Ca(SO.sub.4).sub.2), a mixture of magnesium sulfate and ammonium sulfate ((NH.sub.4).sub.2Mg(SO.sub.4).sub.2), or a combination of the (NH.sub.4).sub.2Ca(SO.sub.4).sub.2, and the (NH.sub.4).sub.2Mg(SO.sub.4).sub.2. Methods of making and using the fertilizer are also disclosed.