Methods and system for increasing the water solubility and availability of zinc in granular fertilizers using acid treatments. The treatment of granular fertilizers with an acidic solution increases an amount of water-soluble zinc, which in turn, increases the efficiency of zinc uptake and reduces the costs and equipment otherwise needed to mitigate zinc deficiencies.

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 invention provides a system to aid in the time-release of molybdenum in soil. The system comprises a dry, powdered blend of a calcium source, a molybdenum source, and a second source of calcium and/or molybdenum. The blend is preferably coated onto a dry agronomic carrier (e.g., urea) for application to soil. Advantageously, the calcium sources sequentially contribute to making the soil pH more molybdenum-friendly (i.e., the pH is increased) for an extended period of time.

A controlled-release fertilizer composition, methods of making, and uses thereof are described. The controlled-release fertilizer composition includes a composite graphene-carbon nanotube material having a three-dimensional open-celled network of graphene and carbon nanotubes and a fertilizer impregnated in the three-dimensional open-celled network of graphene and carbon nanotubes.

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 water submersible controlled release fertilizer particle comprising: (i) a fertilizer core material; (ii) a polyurethane coating layer encapsulates the fertilizer core material; and (iii) a hydrophilic outer layer encapsulates the polyurethane coating layer wherein the hydrophilic outer layer dissolves when subjected to water.

The present disclosure is concerned with fertilizer compositions that provide controlled, delayed, and/or prolonged release of micronutrients in soil. In one embodiment, the inventive composition comprises a dry, powdered blend of a first target micronutrient source in chelated form and a second source of the same target micronutrient but provided in non-chelated form. In another embodiment, the inventive composition provides at least two sources of boron, with one source being a water-soluble form and the other source being a water-insoluble form. Regardless of the embodiment, the methods of using the fertilizer composition results in increased uptake of the particular micronutrient, nitrogen, and/or potassium compared to the prior art.

A renewable energy microgeneration apparatus is disclosed that includes a mixing tank that mixes waste with a liquid, a buffer tank that receives and pre-warms the mixed waste, a pasteurization tank that pasteurizes on the pre-warmed mixed waste, a digestion tank that performs anaerobic digestion on the pasteurized waste, a de-watering device that separates liquid digestate and removes salt from the liquid, sensors that measure salinity and biogas quality, and a controller. The controller causes the transfer of digestate from the digestion tank to the pasteurization tank to the dewatering device, causes the de-watering device to separate the liquid and remove the salt from the liquid, monitors the salinity of the liquid and the quality of biogas using the sensors, and causes the mixing of the liquid with the waste and adjusts the feed rate of the waste to reduce the salinity of the waste and increase methane production.

A nitrogen activator additive to stabilize nitrogen fertilizer, where the activator is coated onto the nitrogen fertilizer, is provided. The nitrogen activator additive contains the novel compound ABT-PNB, a potassium compound, and chitosan, and provides controlled release of the nitrogen fertilizer which fertilizes crops using reduced levels of the nitrogen fertilizer and reduces the release of greenhouse gasses. Urea is an exemplary nitrogen fertilizer that can be used in this regard.

A fertilizer composition including a base fertilizer granule with a hydrophobic or super-hydrophobic coating that reduces fertilizer caking and dust formation. The coating can include a roughening component, which creates micron-scale surface roughness, and a hydrophobic coating. Together, the components of the coating act to physically protect water soluble fertilizers granules from the ingress of moisture and from caking, and increase the resistance of the granules to abrasion.