Chemistry: fertilizers – Processes and products – Organic material-containing
Patent
1987-03-23
1988-11-22
Lander, Ferris H.
Chemistry: fertilizers
Processes and products
Organic material-containing
71 24, 71 27, 71DIG2, C05F 1102, C05G 300
Patent
active
047863072
ABSTRACT:
Liquid micronutrient compositions are prepared by combining fulvic acid extracted from leonardite ore with a metal salt, a hydroxy acid and/or a hydroxy acid salt, and ammonia. The extract of leonardite ore is obtained by combination with a suitable chelant, while the subsequent combination with the metal salt and hydroxy acid/salt is accomplished in a heated aqueous medium. After allowing the desired metal chelates to form, the composition is combined with anhydrous ammonia, usually by sparging, to obtain a stable end product. The micronutrient compositions display enhanced plant uptake in both soil and foliar applications. Moreover, the compositions are particularly stable and suitable for application through drip irrigation systems.
REFERENCES:
patent: 2093047 (1937-09-01), Hudig et al.
patent: 3264084 (1966-08-01), Karcher
Lander Ferris H.
Pacific Micro Minerals, Inc.
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