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BACKGROUND
The aim of this work was to study the possible synergic effect between mixtures with iron leonardite humate (L/Fe3+) and synthetic chelates iron (Ch/Fe3+: o,oEDDHA /Fe3+ or HBED/Fe3+), and to reevaluate the classical chelate shuttle‐effect model. Different molar ratios of L/Fe3+:Ch/Fe3+, different doses, and different sampling times were used in hydroponic and soil experiments using soybean...
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