Iron and manganese availability in restricted aeration soil
1994
Ciudad B, Claudio (Instituto de Investigaciones Agropecuarias, Santiago (Chile). Estacion Experimental La Platina)
Some relation has been observed between soil aeration and radical absorption of iron and manganese in Lens culinaris. A growing and irregular increase of the absorption causes foliar augmentation, a phenomenon called "marea negra". When marea negra inductive soils are exposed to aqueous suspension (1.5), controlled aeration and constant pH 3, in hermetic seal conditions reversible changes with increase and decrease of redox potential occur that can augment or diminish heavy metals solubility. In that case, soil oxygen activity would explain solubility, availability and absorption of those metals by changes of redox potential
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