Particle size distribution of calcareous black soils (calcomelanosols) in the area of Rajac

Abstract

Particle size distribution of different evolution phases of calcareous black soils were studied for the area of Rajac. Four subtypes of calcareous black soils (organogenic, organo-mineral, brownized and loessivized black soils) were singled out. Altogether 20 soil profiles were analyzed, i.e. 2 profiles of organogenic black soils, 7 profiles of organo-mineral black soils, 7 profiles of brownized black soils and 4 profiles of loessivized black soils. The study results indicate that the textural classes of all the analyzed subtypes of calcareous black soils are salty-clay loams, salty clay soils and clay soils.

U radu su prikazani rezultati istraživanja mehaničkog sastava različitih evolucionih faza krečnjačkih crnica sa područja Rajca. Izdvojena su četiri podtipa krečnjačkih crnica (organogena, organo-mineralna, biaunizirana i lesivirana crnica). Ukupno je analizirano 20 peđoloških profila i to 2 profila organogene crnice, 7 profila organo-mineralne crnice, 7 profila braunizirane crnice i 4 profila lesivirane crnice. Rezultati istraživanja pokazali su da svi ispitani podtipovi krečnjačkih crnica po teksturnoj klasi pripadaju praškasto-glinovitim ilovačama, praškastim glinušama i glinušama.