A moisture barrier coating includes the reaction product of (A) at least one polyol and (B) at least one polyisocyanate. The moisture barrier coating further includes at least one amorphous thermoplastic material that forms a homogeneous mixture with the polyol, and is nonreactive with the polyol and with the polyisocyanate. A controlled release fertilizer, a method for the production of a controlled release fertilizer, and a moisture barrier coating composition are also disclosed.

A moisture barrier coating includes the reaction product of (A) at least one polyol and (B) at least one polyisocyanate. The moisture barrier coating further includes at least one amorphous thermoplastic material that forms a homogeneous mixture with the polyol, and is nonreactive with the polyol and with the polyisocyanate. A controlled release fertilizer, a method for the production of a controlled release fertilizer, and a moisture barrier coating composition are also disclosed.

A granular cohered MOP fertilizer having one or more micronutrients, and one or more binding ingredients. The fertilizer is prepared by compacting MOP feed material with a source of zinc and one or more optional binders to form a cohered MOP composition. The cohered MOP composition is then further processed, such as by crushing and sizing, to form a cohered granular MOP product containing a source of zinc. The process yields a fertilizer product containing micronutrients with superior elemental and granule size distribution without compromising handling or storage qualities.

A granular cohered MOP fertilizer having one or more micronutrients, and one or more binding ingredients. The fertilizer is prepared by compacting MOP feed material with a source of zinc and one or more optional binders to form a cohered MOP composition. The cohered MOP composition is then further processed, such as by crushing and sizing, to form a cohered granular MOP product containing a source of zinc. The process yields a fertilizer product containing micronutrients with superior elemental and granule size distribution without compromising handling or storage qualities.

The present invention relates to a method of preparing a wood chip-type organic composite fertilizer wherein the method comprises the steps of: {circle around (a)} preparing wood chips by chipping; {circle around (b)} preparing a liquid organic fertilizer; {circle around (c)} forming an organic mixed solution; {circle around (d)} obtaining colored wood chips by simultaneously immersing the wood chips of the step {circle around (a)} in the organic mixed solution of the step {circle around (c)} and applying hot air to the organic mixed solution to coat the woods chips with colors; {circle around (e)} drying the wood chips to a high temperature to remove moisture formed on an outer surface of the wood chips of the step {circle around (d)} and to make the organic mixed solution penetrate evenly into the wood chips at the same time; and {circle around (f)} packing the dried wood chips of the step {circle around (e)} by weight unit with the measurement thereof on a scale.

A fertilizer granule containing a homogeneous mixture containing urea in an amount providing 3 to 45 wt. % of nitrogen, sulfate in an amount providing 2 to 25 wt. % of sulfur, 0.1 to 15 wt. % of magnesium, and 0.1 to 25 wt. % of potassium. Methods of making and using the fertilizer granule are also disclosed.

A fertilizer granule containing a homogeneous mixture containing urea in an amount providing 3 to 45 wt. % of nitrogen, sulfate in an amount providing 2 to 25 wt. % of sulfur, 0.1 to 15 wt. % of magnesium, and 0.1 to 25 wt. % of potassium. Methods of making and using the fertilizer granule are also disclosed.

A fertilizer granule containing a homogeneous mixture containing urea in an amount providing 3 to 45 wt. % of nitrogen, sulfate in an amount providing 2 to 25 wt. % of sulfur, 0.1 to 15 wt. % of magnesium, and 0.1 to 25 wt. % of potassium. Methods of making and using the fertilizer granule are also disclosed.

A coating is applied in one or more layers on a granular material, such as a granular fertilizer material or the like. The coating may include a diisocyanate in either pure form or partially polymerized form, a polyol or polyol mix, and optionally a wax. The polyol or polyol mix may be, for example, a polyester polyol, a polyether polyol, or combinations thereof. In some examples, the polyol or polyol mix may be an aliphatic glycerine initiated polyether polyol, an aliphatic amine initiated trifunctional polyol, castor oil or castor oil derivative, or ethylene diamine that has been propoxylated or ethoxylated, and combinations thereof. The coating is reacted on the granular material.

A fertilizer application system for a liquid fertilizer concentrate includes a container containing a first fluid. A siphon is disposed on the container and includes two inlets and an outlet. A flow control valve is configured to selectively control an amount of first fluid flowing through the siphon based on ambient temperature of an environment outside the container. A siphon tube includes a siphon tube first portion in fluid communication with the first fluid, and a siphon tube second portion fluidly coupled to an inlet of the siphon. The first fluid includes a liquid fertilizer concentrate comprising a nitrogen containing source, a phosphorous containing source, a sulfur containing source, a potassium containing source, an iron containing source, and water.