Soil organic carbon and nitrogen characteristics in differently used grasslands at sites with drainage and without drainage
Duffkova, R.(Vyzkumny Ustav Melioraci a Ochrany Pudy, Prague (Czech Republic))E-mail:[email protected] | Kvitek, T. | Voldrichova, J.
Extensive management of unfertilized permanent grasslands was examined during five years from the aspect of its influence on soil chemical properties of horizon A in a floodplain locality of the Crystalline Complex. Three treatments: no mowing, one cut, and two cuts per year were used at sites without drainage, with drainage, and with drainage water retardation. The average values measured at all sites and for all treatments were as follows: soil organic carbon content (Corg) 2.3-3.4%, combustible substances (CS) 12-15%, humic to fulvic acids ratio (CHA/CFA) 0.81-0.94, C/N 8-9, humification rate 0.6-0.7, pH 3.9-5.1. The values of Corg, water soluble and hot water soluble C, CHA and CFA, CS and total nitrogen decreased as a result of the influence of different factors (drainage, liming, mowing) accelerating the mineralization and the cycle of organic matter in the soil. Mowing improved humus quality.
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