The present invention discloses a systematic method for phosphorus sustainability, sand soilization and odor removal utilizing the phosphorus-unlocking and odor removing green chemistry of a surface-oxygenated biochar composition made through ozonization in combination with sonication. Surface-oxygenated biochar compositions and sonication-ozonization methods create advanced hydrophilic biochar materials having higher cation exchange capacity, optimized pH, improved wettability, and toxin free components. These sonicated and ozonized biochar compositions are used as filtration materials for clean water and air, as phosphorus solubilizing reagents to mix with phosphate rock materials to make a slow-releasing phosphate fertilizer, as biochar soil additives to help solubilize phosphorus and reduce phosphorus fertilizer additions required to achieve desired soil phosphorus activity, crop uptake, and yield goals, as sand soilization reagents by utilizing their liquid gel-forming activity in the spaces among sand particles to retain water and nutrients and hold the sand particles together, as plant growth stimulants by using the humic acids-like surface-oxygenated biochar substances at a proper ppm concentration and as carbon sequestration agents to help control climate change for energy and environmental sustainability on Earth.

An agricultural spray may be produced by admixing citric acid and glutamic acid with a metal salt and a pesticide or other agricultural chemical containing components capable of precipitating with the metal salt in the admixture. The citric acid and the glutamic acid chelate with the metal salt to provide a stability and compatibility-enhancing composition, thereby preventing the metal salt from forming an insoluble solid within the admixture. Such a composition may be produced by admixing citric acid and glutamic acid at a molar ratio of about 6.8:0.5 to about 1:0.29. The composition may include a metal sat, citric acid and glutamic acid in a molar ratio of about 1:6.8:0.5 to about 1:1:0.29 and a pesticide.

The present specification describes increasing the Brix degree, nutrient transport and density, and yields of cannabis crops through the application of photoacoustic resonance to a nutrient formulation. An activated nutrient solution is obtained by forming an unactivated nutrient solution and applying to the unactivated nutrient solution ultra-rapid impulses of modulated laser light, from one or more laser systems. An increase of at least 5% in the Brix degree of the crop, relative to an unactivated nutrient formulation, can be achieved. In addition, an increase of at least 5%, relative to an unactivated nutrient formulation, is seen with respect to nutrient density and crop yield through application of the activated nutrient solution.

There is provided a smart release potash fertilizer granule comprising a potash core; an extended release layer covering the potash core, wherein the extended release layer comprises water-swellable copolymeric nanoparticles and at least one water-soluble organic acid or water-soluble organic carboxylate salt; a controlled release layer covering the extended release layer, wherein the controlled release layer comprises water-swellable copolymeric nanoparticles; and an anticaking layer covering the controlled release layer, wherein the anticaking layer comprises water-insoluble copolymeric nanoparticles.

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.

An agricultural spray may be produced by admixing citric acid and glutamic acid with a metal salt and a pesticide or other agricultural chemical containing components capable of precipitating with the metal salt in the admixture. The citric acid and the glutamic acid chelate with the metal salt to provide a stability and compatibility-enhancing composition, thereby preventing the metal salt from forming an insoluble solid within the admixture. Such a composition may be produced by admixing citric acid and glutamic acid at a molar ratio of about 6.8:0.5 to about 1:0.29. The composition may include a metal sat, citric acid and glutamic acid in a molar ratio of about 1:6.8:0.5 to about 1:1:0.29 and a pesticide.

The present specification describes increasing the Brix degree, nutrient transport and density, and yields of cannabis crops through the application of photoacoustic resonance to a nutrient formulation. An activated nutrient solution is obtained by forming an unactivated nutrient solution and applying to the unactivated nutrient solution ultra-rapid impulses of modulated laser light, from one or more laser systems. An increase of at least 5% in the Brix degree of the crop, relative to an unactivated nutrient formulation, can be achieved. In addition, an increase of at least 5%, relative to an unactivated nutrient formulation, is seen with respect to nutrient density and crop yield through application of the activated nutrient solution.

A controlled-release fertilizer composition includes coated fertilizer particles having granules substantially encapsulated with a polyurethane coating layer formed from a polyol composition and an isocyanate curing agent. The polyurethane coating layers include inorganic particles. Methods of making and using the controlled-release fertilizer compositions are also disclosed.

The present development is a composition for a commercial fertilizer product that provides for nitrogen, phosphate and/or potassium availability to the plant even in a hostile growing environment with hard water sources. The fertilizer of the present invention includes a polyamine additive, water, and soluble nitrogen, potassium, and/or phosphate, that are essentially unaffected by hard water thereby retaining their availability to the target plants.

Compositions and methods for enhancing nutrient uptake in plants are disclosed. The primary ingredients of the disclosed compositions are (a) poly amino acids, such as tri-polyaspartic acid (TPA), and (b) citric acid. Another component, (c) L amino acids may also be included in the composition. The composition may be used to enhance fertilizer efficiency and to promote plant growth and/or yield.