Controlled release fertilizer

Details Controlled release fertilizer Controlled release fertilizer

C - Chemistry, Metallurgy

05

B

71/47

C05B 15/00 (2006.01) C05C 9/00 (2006.01)

Patent

CA 1085180

CONTROLLED RELEASE FERTILIZER Abstract of the Disclosure: A controlled release particulate fertilizer compo- sition containing nitrogen in a form which is slowly released and a water soluble solid additive, such as a phosphorus or potassium nutrient salt, in a form which is quickly released comprising a core of a water soluble nitrogen nutrient source, a coating of sulfur surrounding the core, and a coating surround- ing the sulfur coating of an inert water-insoluble material such as wax. The inert coating comprises an inner portion of the inert coating alone and an outer portion containing the salt or other water soluble additive. - 1 -

274964

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