Addition of supplemental macro and micro nutrients to...

Details Addition of supplemental macro and micro nutrients to... Addition of supplemental macro and micro nutrients to...

C - Chemistry, Metallurgy

05

G

71/47

C05G 1/00 (2006.01) C05B 19/00 (2006.01) C05G 3/00 (2006.01)

Patent

CA 1336137

A granular fertilizer is prepared by coating particles of a base fertilizer, selected from the orthophosphates of calcium, ammonium and potassium and mixtures thereof, with: (a) a first layer comprising 1 to 5% (by weight of the total composition) of water or an aqueous solution of a salt selected from the group of sulphates and phosphates of ammonium or potassium and mixtures thereof; and (b) a second layer comprising (i) elemental sulphur and/or (ii) a supplemental micronutrient, and, if the first layer consists of water only, (iii) 0.1 to 10% (by wight of the total composition) of a salt selected from the group consisting of water-soluble sulphates and phosphates of ammonium or potassium, sulphates of metallic trace elements, and mixture thereof.

613162

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