Chemistry: fertilizers – Processes and products – Organic material-containing
Patent
1994-02-07
1996-05-07
Langel, Wayne
Chemistry: fertilizers
Processes and products
Organic material-containing
71 27, 71 32, 71 41, 71 641, C05B 1500
Patent
active
055142001
ABSTRACT:
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 concentrate to water at about 1:40 to about 1:600 to result in a fertilizer having a pH in the range acceptable for foliar uptake of phosphorus.
REFERENCES:
patent: 3798020 (1974-03-01), Parham et al.
patent: 4075324 (1978-02-01), Thizy et al.
patent: 5395418 (1995-03-01), Vetanovetz et al.
Lovatt Proc. of Second World Avocado Congress 1992 p. 224 (1992) "A definitive test to determine whether phosphite fertilization can replace phosphate fertilization to supply P in the metabolism of `Hass` on Duke 7.--a preliminary report".
Unknown Citrograph, 75(7) p. 161 (1990) "Foliar applications do double duty".
MacIntire et al., Agronomy Journal, 42(11) p. 543 (1950) "Fertilizer evaluation of certain phosphorus, phosphorous, and phosphoric materials by means of pot cultures".
Grossl et al., Soil Science Society of America Jour., 55(3) p. 670 (1991) "Precipitation of dicalcium phosphate dihydrate in the presence of organic acids".
WO86/00613 published Jan. 30, 1986.
Brunelle Jan P.
Dreger Walter H.
Langel Wayne
The Regents of the University of California
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