The invention relates to the technical field of agricultural planting, in particular to a special controlled-release microbial fertilizer for peanuts in a continuous cropping field and a preparation method thereof. The fabric comprises an outer layer, a middle layer and an inner layer. Through a three-layer structure, the controlled-release fertilizer prepared by the disclosure can realize the fertilizer efficiency period of 50-60 days, and achieves the purpose of twice releases.

The invention features a fertilizer mixture containing (i) a calcium ammonium nitrate mineral fertilizer and (ii) 2-(N-3,4-dimethylpyrazole)succinic acid, or a salt thereof.

An electric power generating system includes an autoclave coupled to a natural gas source, an oxygen source, and having a pressure reducing outlet valve. A high-pressure pump provides a solution of ammonium hydroxide and ammonium carbonate solution under pressure to the autoclave. An exothermic reaction generates high-pressure steam for electrical power generation. A crystallizer receives ammonium carbonate from the reaction for the formation of crystallized ammonium carbonate fertilizer.

A fertilizer composition, comprising solid granules each including a homogeneous blend of ammonium sulfate, a water insoluble oxide of a micronutrient metal, and a water-soluble sulfate of the micronutrient metal. A method of forming a fertilizer composition, comprising the steps of: combining ammonium sulfate and a water insoluble oxide of a micronutrient metal; granulating the ammonium sulfate and water insoluble oxide of the micronutrient metal in the presence of a liquid to initiate reaction of a portion of the ammonium sulfate with a portion of the water insoluble oxide of the micronutrient metal to form ammonia and a water-soluble sulfate of the micronutrient metal; and producing a fertilizer composition in the form of solid fertilizer granules each comprising a homogeneous blend of ammonium sulfate, the water insoluble oxide of the micronutrient metal, and the water-soluble sulfate of the micronutrient metal.

A fertilizer composition, comprising solid granules each including a homogeneous blend of ammonium sulfate, a water insoluble oxide of a micronutrient metal, and a water-soluble sulfate of the micronutrient metal. A method of forming a fertilizer composition, comprising the steps of: combining ammonium sulfate and a water insoluble oxide of a micronutrient metal; granulating the ammonium sulfate and water insoluble oxide of the micronutrient metal in the presence of a liquid to initiate reaction of a portion of the ammonium sulfate with a portion of the water insoluble oxide of the micronutrient metal to form ammonia and a water-soluble sulfate of the micronutrient metal; and producing a fertilizer composition in the form of solid fertilizer granules each comprising a homogeneous blend of ammonium sulfate, the water insoluble oxide of the micronutrient metal, and the water-soluble sulfate of the micronutrient metal.

A method of producing a fertiliser composition, the method comprising the steps of: (a) contacting (i) ash from an organic source with (ii) a source of nitric acid; (b) contacting (iii) a composition comprising an amino compound with (iv) a composition comprising carbon dioxide; and (c) admixing the composition obtained in step (a) with the composition obtained in step (b).

A method of producing a fertiliser composition, the method comprising the steps of: (a) contacting (i) ash from an organic source with (ii) a source of nitric acid; (b) contacting (iii) a composition comprising an amino compound with (iv) a composition comprising carbon dioxide; and (c) admixing the composition obtained in step (a) with the composition obtained in step (b).

There is provided herein a fertilizer granule comprising Urea, Polyhalite and Ammonium Sulphate.

Process and plant for the production of a urea ammonium sulfate granulate. In a first fluidized bed a first spraying liquid is sprayed comprising a urea melt and an aqueous solution of ammonium sulfate, e.g. a (near-) eutectic mixture. The bed temperature is below the crystallization temperature of the sprayed mixture. In a next compartment the granulate is fluidized to form a second fluidized bed. A second spraying liquid comprising a urea melt is sprayed into the second fluidized bed with a bed temperature higher than the bed temperature of the first fluidized bed and lower than the crystallization temperature of the sprayed second spraying liquid.

Disclosed herein is a composition comprising fertilizer particles being coated with at least two layers of superabsorbent polymers such that leachate of nitrogen in the soil is substantially decreased.