THE MAIN PHYSICAL, HYDROPHYSICAL AND CHEMICAL ATTRIBUTES OF SOME VERTISOLS FROM OLT COUNTY, ROMANIA

• Published in: Acta Technica Corvininesis Vol. 14; no. 3; pp. 23 - 30
• Main Authors: Manea, Alexandrina, Vrinceanu, Nicoleta, Calciu, Urina, Raducu, Daniela, Gherghina, Carmen-Alina
• Format: Journal Article
• Language: English
• Published: Hunedoara Faculty of Engineering Hunedoara 01.07.2021
• Subjects: Aeration; Clay; Drainage; Humus; Hydraulics; Investigations; Laboratories; Particle size; Permeability; Physical properties; Potassium; Soil analysis; Soil classification; Soil investigations; Soil permeability; Romania

The the main physical, hydrophysical and chemical attributes of some Vertisols from Olt county were investigated. The field study was carried out on agricultural area in four soils, from each pedogenetic horizon were collected soil in disturbed samples and undisturbed samples for laboratory analysis. The soil classification was made according WRB 2014 and SRTS 2012, and the investigated soils were classified as Vertisols. In the studied soils, the granulometry data showed a clay texture in all the pedogenetic horizons. According to the values of Saturated hydraulic conductivity (Ksat), most of the studied horizons had low and very low permeability. Useful water capacity (UWC) was obtained by calculation, as the difference between wilting coefficient and field water capacity, and in most of the horizons of the investigated soils, recorded very low values. Moreover, low values of draining capacity (DC) pointed out the studied soils have aeration, permeability drainage deficiencies. The studied Vertisols, in top soil, show moderat acid to low acid pH, low humus content (2.72-3.34%), low content of Pm and high content of Km.