Foliar metal ion nutrient fertilizer
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United States of America Patent
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Sep 22, 2015
Grant Date -
Dec 18, 2014
app pub date -
Aug 18, 2014
filing date -
Feb 19, 2013
priority date (Note) -
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Abstract
The uptake of foliar-applied metal ion nutrients, for example, zinc, iron, magnesium and copper, is influenced by humidity. Specifically, uptake is negatively impacted if the zinc is applied under low humidity, as the metal ion is “locked up” by leaf waxes as the droplet dries on the surface of the leaf, thereby rendering the metal ion useless. Described herein is a foliar metal ion fertilizer comprising (a) a metal ion sulphate in combination with a mixture of (b) urea and (c) a substance with a suitable point of deliquescence (POD) such as organic surfactants, calcium chloride, magnesium chloride or combinations thereof.
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