A process for the production of elemental sulphur-urea fertilizer products is described, comprising the preparation of molten urea; preparing a suspension of micronized sulphur particles with water; mixing the molten urea with suspension of micronized sulphur particles with water wherein the micronized sulphur particles substantially remain in micronized solid state; and spraying the mixture of molten urea and suspension of micronized sulphur particles with water into a granulator, wherein the water in the mixture is flashed off, resulting in the formation of sulphur-urea granules with an even distribution of urea and micronized sulphur particles. An elemental sulphur-urea fertilizer composition obtained by the process is also described.

A fertilizer stick comprising a saccharide and a fertilizer dispersed therein, wherein the saccharide constitutes about 25% to about 95% (w/w) of the stick.

A fertilizer stick comprising a saccharide and a fertilizer dispersed therein, wherein the saccharide constitutes about 25% to about 95% (w/w) of the stick.

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.

A composition containing diaminomethanal complexes with C.sub.1 to C.sub.3 carboxylic acids. The composition can be made into a solution by adding water. The solution can be applied to plants and/or soil.

A fluidized bed cooler for cooling a urea-containing granular material may include a cooler chamber having a product inlet opening, a product outlet opening, a perforated plate disposed in the cooler chamber, and at least one cooling medium entry opening disposed beneath the perforated plate. The product inlet opening may be disposed above the perforated plate, and a baffle plate may be disposed between the product inlet opening and the perforated plate. A distributor plate may be disposed between the baffle plate and the perforated plate. An area of the distributor plate may be 10% to 50% greater than an area of the baffle plate.

There is provided a nitrogen fertilizer granule in which the nitrogen release can be timed and the nitrogen release rate can be controlled according to the needs of the plants to be fertilized. The smart release nitrogen-containing fertilizer granule comprises a nitrogen-containing fertilizer core; an organic functional layer covering the core, wherein the organic functional layer comprises at least one functional organic compound that is an enzyme inhibitor, a microbial suppressor, a phosphorus solubilizer, and/or a plant hormone; a controlled release layer covering the organic functional layer, wherein the controlled release layer comprises water-swellable copolymeric nanoparticles; and an anticaking layer covering the controlled release layer, wherein the anticaking layer comprises water-insoluble copolymeric nanoparticles.

There is provided a nitrogen fertilizer granule in which the nitrogen release can be timed and the nitrogen release rate can be controlled according to the needs of the plants to be fertilized. The smart release nitrogen-containing fertilizer granule comprises a nitrogen-containing fertilizer core; an organic functional layer covering the core, wherein the organic functional layer comprises at least one functional organic compound that is an enzyme inhibitor, a microbial suppressor, a phosphorus solubilizer, and/or a plant hormone; a controlled release layer covering the organic functional layer, wherein the controlled release layer comprises water-swellable copolymeric nanoparticles; and an anticaking layer covering the controlled release layer, wherein the anticaking layer comprises water-insoluble copolymeric nanoparticles.

A fertilizer granule containing a core containing a nitrogen containing fertilizer such as urea and a coat on the core, the coat containing an organic zinc (Zn) complex and an inorganic Zn compound, and methods of making and using the fertilizer granule.

A fertilizer granule containing a core containing a nitrogen containing fertilizer such as urea and a coat on the core, the coat containing an organic zinc (Zn) complex and an inorganic Zn compound, and methods of making and using the fertilizer granule.