2.4.2. Soil chemical propertiesThe total organic carbon (Corg) and nitrogen contents were estimated using finely ground (125 μm sieved) soil with Elementar® CN dry combustion analyzer. Since the pH of the collected soil was <6.5, the total carbon content was considered as Corg. Active C (AC) based on KMnO4 oxidation was measured on air-dried soil as described by Weil et al. (2003).
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