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Abstract
We have studied at the present papel four types of soils with very litle developed profiles which may be classified as Rendsina soils, Vertisols and their integrades. The relation soil/fertility according to the soils studied is as fallaws:
Regosoles → Vertisoles → Serosoles → Yermosoles
The main factors which influence the soil fertility are: soil depth, the presence of gypsum cousts more or les near surface, hidromorphic conditions and the climatologie of the zone.
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