Concentrated nitrogen-containing fertilizers having increased alkaline earth metal uptake
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United States of America Patent
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May 23, 1995
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Mar 9, 1993
filing date -
Mar 9, 1993
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Abstract
Urea increases the solute content of a fertilizer comprising water and at least two different nitrate-containing compounds selected from the group consisting of ammonium nitrate, alkali metal nitrates, and alkaline earth metal nitrates. In addition, urea enhances plant uptake of alkaline earth metals. Particularly favored are quaternary aqueous solutions containing urea, calcium nitrate, and ammonium nitrate.
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