Provided is a solvent borne fertilizer composition. The fertilizer composition includes a low molecular weight lignin in an amount of 5 or about 5 to 25 or about 25 weight percent solids, a carbohydrate in an amount of 1 or about 1 to 20 or about 20 weight percent solids, wherein the lignin and carbohydrate form a lignin-carbohydrate mixture; and a urea moiety bonded to the lignin-carbohydrate mixture.

Provided is a solvent borne fertilizer composition. The fertilizer composition includes a low molecular weight lignin in an amount of 5 or about 5 to 25 or about 25 weight percent solids, a carbohydrate in an amount of 1 or about 1 to 20 or about 20 weight percent solids, wherein the lignin and carbohydrate form a lignin-carbohydrate mixture; and a urea moiety bonded to the lignin-carbohydrate mixture.

A fertilizer comprises a slow release source of phosphorus and a slow release source of sulfur. The slow release source of phosphorus may be struvite. The slow release source of sulfur may be polyhalite. The fertilizer may further contain a fast release source of phosphorus such as a water-soluble phosphorus-containing material. The fertilizer may be in the blended form or in the co-granular form. A number of methods may be used to make such co-granular fertilizers.

A fertilizer comprises a slow release source of phosphorus and a slow release source of sulfur. The slow release source of phosphorus may be struvite. The slow release source of sulfur may be polyhalite. The fertilizer may further contain a fast release source of phosphorus such as a water-soluble phosphorus-containing material. The fertilizer may be in the blended form or in the co-granular form. A number of methods may be used to make such co-granular fertilizers.

Provided herein are compositions and methods to improve plant resistance to abiotic and biotic stress, thereby improving crop yield. Provided herein are compositions including zinc, copper, and an acid, where the acid is selected from citric acid, sulfuric acid, oxalic acid, humic acid, fulvic acid, boric acid, acetic acid, and a combination thereof. Certain embodiments optionally include ammonium sulfate. Compositions described herein have plant priming activity where the plant's defenses against abiotic and biotic stress are boosted.

Provided herein are compositions and methods to improve plant resistance to abiotic and biotic stress, thereby improving crop yield. Provided herein are compositions including zinc, copper, and an acid, where the acid is selected from citric acid, sulfuric acid, oxalic acid, humic acid, fulvic acid, boric acid, acetic acid, and a combination thereof. Certain embodiments optionally include ammonium sulfate. Compositions described herein have plant priming activity where the plant's defenses against abiotic and biotic stress are boosted.

A method for cultivating functional crops using nano organic germanium and nano organic selenium, includes performing irrigation or foliar fertilization on plants of the crops with nanoscaled organic germanium and nanoscaled organic selenium, which are prepared in nanoscale sizes by performing one or two or more selected from a method of applying physical energy (heat or pressure) to organic germanium and organic selenium, a method of applying electrical explosive energy, and a chemical bonding process, at least twice at the time when the plants of the crops are most vigorously grown and developed and at the time of maturation to bear fruit, wherein the prepared nanoscaled organic germanium and nanoscaled organic selenium are one-component materials which are dispersed in water as a solvent in a nanoscale state.

A method for cultivating functional crops using nano organic germanium and nano organic selenium, includes performing irrigation or foliar fertilization on plants of the crops with nanoscaled organic germanium and nanoscaled organic selenium, which are prepared in nanoscale sizes by performing one or two or more selected from a method of applying physical energy (heat or pressure) to organic germanium and organic selenium, a method of applying electrical explosive energy, and a chemical bonding process, at least twice at the time when the plants of the crops are most vigorously grown and developed and at the time of maturation to bear fruit, wherein the prepared nanoscaled organic germanium and nanoscaled organic selenium are one-component materials which are dispersed in water as a solvent in a nanoscale state.

A preparation method for a combined modified straw active particulate carbon adsorption material and use of same. The preparation method for the combined modified straw active particulate carbon adsorption material comprises the following steps: 1) mixing straw powders, distilled water, a binder and a composite mineral, then pelletizing same, and then placing same in a tube furnace for pyrolysis to prepare straw particulate carbon; 2) introducing an inert gas into a modification reagent, adjusting the pH value combined and 3) soaking the straw particulate carbon into the combined modification solution for 30 min, and performing cleaning and drying, so as to obtain a combined modified straw active particulate carbon adsorption material. The combined modified straw active particulate carbon has a good adsorption effect on phosphate group in low-pollution water.

A preparation method for a combined modified straw active particulate carbon adsorption material and use of same. The preparation method for the combined modified straw active particulate carbon adsorption material comprises the following steps: 1) mixing straw powders, distilled water, a binder and a composite mineral, then pelletizing same, and then placing same in a tube furnace for pyrolysis to prepare straw particulate carbon; 2) introducing an inert gas into a modification reagent, adjusting the pH value combined and 3) soaking the straw particulate carbon into the combined modification solution for 30 min, and performing cleaning and drying, so as to obtain a combined modified straw active particulate carbon adsorption material. The combined modified straw active particulate carbon has a good adsorption effect on phosphate group in low-pollution water.