1
Leon R Jones: Fertilizer composition and method of making same. Herbert E Haynes Jr, September 26, 1978: US04116664 (58 worldwide citation)

A method for controlled reaction of urea with sulfuric acid to form a liquid nitrogen sulfate fertilizer composition consisting of urea sulfate and liquified urea, and which may include other nutrients.


2
Donald C Young: Foliar fertilization method and composition. Union Oil Company of California, Dean Sandford, Michael H Laird, July 29, 1980: US04214888 (52 worldwide citation)

Aqueous urea solutions particularly suited for foliar fertilization are disclosed. They are characterized by low phytotoxicity, low corrosivity, and improved toxicity stability and comprise urea nitrogen and between about 0.005 and about 0.1 molar equivalents per mole of urea of a pH buffer having a ...


3
Neumiller Phillip J: High analysis clear lawn fertilizer solution. I C Johnson & Son, November 11, 1975: US3918952 (38 worldwide citation)

A high nitrogen containing clear liquid fertilizer including phosphorous and potassium in a ratio suitable for use as a lawn fertilizer wherein the solution has a pH within the range of from 7.5 to 8.7 and has a cloud point of less than 45.degree.F and a clearing point of less than 65.degree.F. The ...


4
Kenneth Eugene Fersch, Wayne Eugene Stearns: Controlled release fertilizer. The O M Scott & Sons Company, J B Raden, H J Holt, August 16, 1977: US04042366 (28 worldwide citation)

A controlled release particulate fertilizer composition containing nitrogen in a form which is slowly released and a water soluble solid additive, such as a phosphorus or potassium nutrient salt, in a form which is quickly released comprising a core of a water soluble nitrogen nutrient source, a coa ...


5
Carol J Lovatt: Formulation of phosphorus fertilizer for plants. The Regents of the University of California, Walter H Dreger, Jan P Brunelle, May 7, 1996: US05514200 (24 worldwide citation)

Concentrated phosphorus fertilizers are disclosed that comprise a buffered composition of an organic acid and salts thereof and a phosphorous-containing acid and salts thereof. The concentrated phosphorus fertilizers can be diluted with water of pH ranging from about 6.5 to about 8.5 at ratios of co ...


6
Donald C Young: Multicomponent soil supplement. Union Oil Company of California, Dean Sandford, Michael H Laird, August 26, 1980: US04219347 (23 worldwide citation)

Homogeneous solid fusions of particulate mineral nutrients in a continuous rhombic sulfur matrix containing at least about 50 weight percent sulfur are disclosed. These materials are obtained by dispersing throughout a sulfur melt at a temperature of 120.degree. to about 400.degree. C. a nutrient-hy ...


7
Hannu Aijala: Aqueous fertilzer suspension containing at least phosphate ions and calcium or magnesium ions and a use of the suspension. Kemira Agro Oy, Andrus Sceales Starke & Sawall, December 7, 1999: US05997602 (21 worldwide citation)

The invention relates to a stable, concentrated aqueous fertilizer suspension, which can be diluted with water to provide a working solution. The suspension contains 10 to 60% by weight of water and 40 to 90% by weight of a plant nutrient composition based on at least a calcium, and/or a magnesium a ...


8
Carol J Lovatt: Formulation of phosphorus fertilizer for plants. The Regents of the University of California, Walter H Dreger, Jan P Brunelle, November 3, 1998: US05830255 (16 worldwide citation)

Concentrated phosphorus fertilizers are disclosed that comprise a buffered composition of an organic acid and salts thereof and a phosphorous-containing acid and salts thereof. The concentrated phosphorus fertilizers can be diluted with water of pH ranging from about 6.5 to about 8.5 at ratios of co ...


9
John J Hanway, Ramon Garcia: Combination of ground and foliar application of fertilizer. Tilton Fallon Lungmus & Chestnut, March 27, 1979: US04146383 (14 worldwide citation)

Legume grain crops growing under field conditions are supplied exclusively with nutrients from the ground (N, P. K, and S) until the legumes have reached a growth stage in which the seeds are starting to fill, and then during the seed filling period the leaves of the plants are sprayed with an aqueo ...


10
Trocino Frank S: Slow nitrogen releasing fertilizers and methods of making the same. Bohemia, Klarquist Sparkman Campbell Leigh Hall & Whinston, December 30, 1975: US3929446 (14 worldwide citation)

Wax and preferably, cork are removed from Douglas fir bark, and the residue is blended with water soluble nutrient fertilizer materials and pressed into pellets. The pellets are excellent fertilizers and release nitrogen into soil to which they are applied at optimum rates for long periods of time.