The present subject matter relates generally to stable and homogeneous aqueous suspension compositions comprising urea, water, a suspension agent, urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT) and nitrification inhibitor dicyandiamide (DCD), and to methods of preparing and using such compositions.

The present invention relates to an improved nitrification inhibitor composition and its use in agricultural applications.

The invention relates to a homogeneous, solid, particulate, urea ammonium sulphate-based composition comprising urea ammonium sulphate and a urease inhibitor of the type phosphoric triamide, wherein the urea ammonium sulphate-based composition is further characterized in that one or more of the following measures applies: a) it comprises 5 weight % or less, relative to the total weight of the composition, of one or more alkaline or alkaline-forming inorganic or organic compounds that is able to interact with ammonium sulphate; b) the urease inhibitor of the type phosphoric triamide is in a solid particulate form; c) an anticaking and/or moisture repellent coating is applied onto the urea ammonium sulphate particulate material. The composition according to the invention has improved properties for reducing ammonia loss by urease activity in the soil and is in particular suitable as a fertilizer. The invention further relates to a method for the manufacture of a homogeneous, solid, particulate urea ammonium sulphate-based composition comprising urea, ammonium sulphate and a urease inhibitor of the type phosphoric triamide, in particular N-(n-butyl) thiophosphoric triamide (nBTPT), as well as to a composition of kit of parts comprising: a) one or more alkaline or alkaline-forming inorganic compounds that is able to interact with ammonium sulphate; b) the urease inhibitor of the type phosphoric triamide in solid particulate or liquid form, preferably wherein the urease inhibitor is N-(n-butyl) thiophosphoric triamide (nBTPT); c) optionally, one or more anticaking and/or moisture repellent compounds.

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.

A method for applying an agrochemical mixture to a working area of a field using a vehicle moving on the field is described. Thereby, a solid fertilizer is spread on the working area using a fertilizer spreading device mounted on the vehicle and a liquid fertilizer additive is sprayed on the working area using a field sprayer, mounted on the vehicle separately from the fertilizer spreading device. Therein, the liquid fertilizer additive is prevented from coming into contact with surfaces of the fertilizer spreading device, which also come into contact with the solid fertilizer. Moreover, a vehicle for applying an agrochemical mixture to a working area of a field while moving on the field is also described.

Novel polyanionic polymers including families of repeat units, such as maleic, itaconic, and sulfonate repeat units. The polymers are at least tetrapolymers and may be in the acid form or as partial or complete salts. The polymers may be synthesized using free radical initiators in the presence of vanadium compounds. The polymers have a variety of uses, particularly in agricultural contexts.

Novel polyanionic polymers including families of repeat units, such as maleic, itaconic, and sulfonate repeat units. The polymers are at least tetrapolymers and may be in the acid form or as partial or complete salts. The polymers may be synthesized using free radical initiators in the presence of vanadium compounds. The polymers have a variety of uses, particularly in agricultural contexts.

In accordance with the present invention, disclosed herein is a fertilizer core particle and fertilizer granule. The fertilizer core particle has one or more fertilizer additives, one or more binders comprising a wax, and one or more pH buffering agents, and wherein the core particle comprises from about 10 wt % to about 99 wt % of the one or more binders comprising a wax.

In accordance with the present invention, disclosed herein is a fertilizer core and fertilizer granule and methods related thereto. The fertilizer core particle has an outer surface and comprising one or more fertilizer additives, one or more binders, and one or more pH buffering agents, and wherein the fertilizer core particle comprises from about 10 wt % to about 99 wt % of the one or more binders.

Reaction products and methods for making and using such reaction products are provided. For example, a reaction product comprising an adduct formed from two or more of a first nucleophile (e.g., including, but not limited to, a urease inhibitor), a second nucleophile, and an electrophile is described, which can be provided in various forms. Such a reaction product can be in the form of a solid or solution. Such a reaction product can also be combined with one or more additional components, including but not limited to, free urease inhibitor and/or a nitrogen-based fertilizer composition.