CPC C05G 5/37 (2020.02) [C05B 15/00 (2013.01); C05C 3/005 (2013.01); C05F 3/00 (2013.01); C05G 3/60 (2020.02); C05G 5/12 (2020.02); C05G 5/30 (2020.02); C05G 5/38 (2020.02)] | 20 Claims |
1. A method of coating hydrolyzed fertilizer granules comprising:
contacting organic material with sulfuric acid to hydrolyze the organic material forming a fluidized acidic mix;
ammoniating the fluidized acidic mix;
spraying the ammoniated fluidized acidic mix in a granulator forming hydrolyzed fertilizer granules having a matrix of inorganic nutrients and charged organic amphoteric molecules;
drying and cooling the hydrolyzed fertilizer granules; and
contacting the hydrolyzed fertilizer granules with a coating agent containing a plant growth regulator and reactive chemical groups, wherein the plant growth regulator chemically reacts with the charged organic amphoteric molecules of surfaces and/or interior portions of the matrix, forming coated fertilizer granules with embedded plant growth regulators.
|