Topical fertilization methods and compositions for use therein

Details Topical fertilization methods and compositions for use therein Topical fertilization methods and compositions for use therein

1981-11-05

1984-05-08

Lander, Ferris H.

Chemistry: fertilizers

Processes and products

Organic material-containing

71 6408, 71 6410, 564 39, 564 73, C05C 900

Patent

active

044472536

ABSTRACT:
Improved liquid fertilizer compositions for applying urea to the soil surface contain urea-sulfuric acid reaction products having high H.sub.2 SO.sub.4 /urea molar ratios and are free of toxic components such as sulfamic acid normally associated with such products. The use of these compositions reduces or completely eliminates urea volatilization loss normally associated with topical urea fertilization, particularly in alkaline soils.

REFERENCES:
patent: 1340708 (1920-05-01), Fjellanger
patent: 1884105 (1932-10-01), Moore
patent: 3459499 (1969-08-01), Mullen, Jr.
patent: 4116664 (1978-09-01), Jones
patent: 4214888 (1980-07-01), Young
patent: 4310343 (1982-01-01), Verdegaal et al.
D. F. du Toit, Verslag Akad. Wetenschappen, 22, 573-574, (abstracted in Chemical Abstracts, 8, 2346, 1914).
L. H. Dalman, "Ternary Systems of Urea and Acids; I. Urea, Nitric Acid and Water; II. Urea, Sulfuric Acid and Water; III. Urea, Oxalic Acid and Water"; JACS, 56, 549-553, (1934).
Sulfur Institute Bulletin No. 10 (1964), "Adding Plant Nutrient Sulfur to Fertilizer".
William Lohry, "Techniques of Manufacturing Hot Mix Suspensions", National Fertilizers Association, "Round--Up Papers",(1968), pp. 34-38.

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