UREA PHOSPHITE FERTILIZER
A new fertilizer comprising Urea Phosphite, which is made by reacting phosphorous acid with urea. Urea Phosphite is characterized by being a liquid produced in an unprocessed reaction, and by having phosphite as a phosphorus source and urea as a nitrogen source. The reaction product may be blended with an admix and spray dried, or dissolved in water.
1 . A method for making a fertilizer comprising urea phosphite, comprising reacting together a urea compound and a phosphorous acid compound without the addition of water, such that the fertilizer comprises urea phosphate having the effect of enhancing plant growth when applied to plant seed, plants, and/or soil in which plant seeds or plants are planted.
2 . The method of claim 1 wherein said reaction is conducted at a temperature ranging from about 15° C. and about 140° C.
3 . The method of claim 2 wherein the urea compound and the phosphorous acid compound are solids.
4 . The method of claim 3 wherein the reaction product is a non-hydrous liquid.
5 . The method of claim 1 further comprising blending or reacting the reaction product with an admix for agricultural use.
6 . The method of claim 5 further comprising spray drying the blended product.
7 . The method of claim 5 wherein the admix is solid such that the fertilizer is dry and soluble.
8 . The method of claim 1 wherein the reaction is at room temperature.
9 . The method of claim 1 wherein the urea compound is selected from the group consisting of ureas, thioureas, phenylureas and other substituted ureas.
10 . The method of claim 1 wherein the urea and phosphorous acid compounds are reacted in a molar ratio of urea to phosphorous acid ranging from about 2:1 to about 1:2.
11 . The method of claim 1 wherein the urea phosphite is a pH buffer.
12 . The method of claim 1 wherein the urea phosphite is a solution pH modifier to enable solubility of mineral salts in the presence of phosphorus compounds.