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Water Solubility of Zinc in a Granular Mixed Fertilizer as Affected by Zine Source and Method of Addition
Author(s) -
Richards G. E.
Publication year - 1969
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1969.03615995003300020039x
Subject(s) - solubility , water soluble , fertilizer , chemistry , chelation , zinc , aqueous solution , coating , nuclear chemistry , inorganic chemistry , organic chemistry
Eleven various water‐soluble, slightly‐soluble, and chelated Zn compounds were incorporated into an 8‐7‐6.6 (8‐16‐8) granular mixed fertilizer in a pilot plant operation by three methods: prior to ammoniation, after ammoniation, and as a coating. Total and water‐soluble Zn was determined in the products. Most of the Zn from chelated compounds remained in a water‐soluble form for all methods of addition. Less than 10% of the Zn in soluble compounds remained water soluble when incorporated prior to ammoniation; however, the level of water‐soluble Zn was higher when incorporated after ammoniation and further improved when applied as a coating. The level of water‐soluble Zn from basic Zn compounds of low solubility was highest when they were applied as a coating. Solubility of fritted Zn was unaffected by method of incorporation into fertilizer. Soluble Zn from non‐chelated sources increased as water‐soluble P increased and also as fertilizer pH decreased.