A controlled release fertilizer includes a core including plant nutrient particles and a biodegradable coating composition forming at least one layer surrounding the core, the composition comprising cellulose, the at least one layer being structured as a semi-permeable surface membrane configured to release the plant nutrients from the core in a linear manner.

The present invention discloses a mineral soil conditioner produced by coal ash and a preparation method thereof. The preparation method includes: (1) mixing coal ash with a heteroacid to form a mixture, stirring and filtering the mixture under the action of ultrasound to obtain a refined coal ash and a filtrate; (2) mixing the refined coal ash obtained in the step (1) with a calcium-based compound and a potassium-based compound well, performing drying with the residual heat of tail gas of a kiln after granulation; (3) performing calcination and activation continuously after granulation and drying in the step (2), then cooling, and processing by ball milling and molding to obtain a novel mineral soil conditioner. The present invention achieves the efficient utilization of a fuel coal by-product, namely, coal ash in agriculture and reduces the heavy metal content in coal ash and environmental contamination caused thereby.

The present invention discloses a mineral soil conditioner produced by coal ash and a preparation method thereof. The preparation method includes: (1) mixing coal ash with a heteroacid to form a mixture, stirring and filtering the mixture under the action of ultrasound to obtain a refined coal ash and a filtrate; (2) mixing the refined coal ash obtained in the step (1) with a calcium-based compound and a potassium-based compound well, performing drying with the residual heat of tail gas of a kiln after granulation; (3) performing calcination and activation continuously after granulation and drying in the step (2), then cooling, and processing by ball milling and molding to obtain a novel mineral soil conditioner. The present invention achieves the efficient utilization of a fuel coal by-product, namely, coal ash in agriculture and reduces the heavy metal content in coal ash and environmental contamination caused thereby.

Plant fertilizer compositions, products, systems, kits, and methods. Products and methods for increasing the amount of soluble phosphorus in soil, solubilizing or increasing the level of soluble phosphorus and/or bioavailability of phosphorus in soil. Bioactivated fertilizer compositions and related methods for increasing phosphorus solubility and/or bioavailability in soil.

A binder for hydroscopic substrates that is organic and thus, when used on fertilizer approved for organic farming, allows the fertilizer to maintain its status while improving the fertilizer's sensitivity to humidity. The binder may be Greek hay, also known as fenugreek gum, and may be applied to a fertilizer substrate.

A binder for hydroscopic substrates that is organic and thus, when used on fertilizer approved for organic farming, allows the fertilizer to maintain its status while improving the fertilizer's sensitivity to humidity. The binder may be Greek hay, also known as fenugreek gum, and may be applied to a fertilizer substrate.

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

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 granule includes (i) particles comprising an active agent and (ii) a binding agent comprising a lignosulfonate and a mixture of polyols. A ratio of lignosulfonate to the mixture of polyols is in the range of 1.5:1 to 16:1. The mixture of polyols may include monosaccharides, disaccharides, hydrogenated starch hydrolysates, or combinations thereof. The active agent may be an agriculturally active agent, a pharmaceutically active agent, or a food product. The granule may have a sphericity of at least 85%.

A granule includes (i) particles comprising an active agent and (ii) a binding agent comprising a lignosulfonate and a mixture of polyols. A ratio of lignosulfonate to the mixture of polyols is in the range of 1.5:1 to 16:1. The mixture of polyols may include monosaccharides, disaccharides, hydrogenated starch hydrolysates, or combinations thereof. The active agent may be an agriculturally active agent, a pharmaceutically active agent, or a food product. The granule may have a sphericity of at least 85%.