Published in Scientific Papers. Series A. Agronomy, Vol. LXVII, Issue 1
Written by Daniela RĂDUCU, Irina-Carmen CALCIU, Olga VIZITIU, Alina-Carmen GHERGHINA, Alexandrina MANEA, Anca-Rovena LĂCĂTUȘU
The evolution of the soil architecture after the matrix lost the CaCO3 under the water irrigation influence had important consequences on the evolution of the physico-chemical characteristics of the long term irrigated soils. The analytical data results showed that, in the case of the horizons with calcium carbonate pedofeatures, the bulk density reached higher values, comparing to the horizons free of CaCO3. The paper represents also an alarm signal for the soil scientists that classified the long-term irrigated Chernozems from the Romanian Plain (with CaCO3 washed deeper than 125 cm), to the Phaeozems, which represents a regrettable mistake. Between Chernozems and Phaeozems there are very important differences concerning: the quality and the quantity of the organic matter; the plasmic material mobility; the leaching process with clay coatings formation; CaCO3 morphology, etc. The leaching of the CaCO3 to > 125 cm depth in the long-term irrigated Chernozems from the Romanian Plain is due to the anthropogenic influence, and it is not pedogenetic, that is why it is not a pertinent condition to classify these Chernozems as Phaeozems.
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