Technologies for the production of slow/controlled release fertilizers

A review, with 104 refs., of long-acting organic, inorganic, matrix and coated fertilizers. The structure of coated fertilizers with slow and controlled release of nutrients was discussed, taking into account typical substances used for their encapsulation. Particular attention was paid to the polymer coating modifiers and powder mineral fillers, which include layered Al-Si materials (montmorillonite, halloysite, kaolinite). The methods of applying coating materials to fertilizer granules were also presented.