Microbial, chemical and textural parameters of main soil taxonomical units of Czech Republic
2006
Ruzek, L.,Ceska Zemedelska Univ., Prague (Czech Republic). Fakulta Agrobiologie, Potravinovych a Prirodnich Zdroju | Vorisek, K.,Ceska Zemedelska Univ., Prague (Czech Republic). Fakulta Agrobiologie, Potravinovych a Prirodnich Zdroju | Novakova, M.,Ceska Zemedelska Univ., Prague (Czech Republic). Fakulta Agrobiologie, Potravinovych a Prirodnich Zdroju | Strnadova, S.,Ceska Zemedelska Univ., Prague (Czech Republic). Fakulta Agrobiologie, Potravinovych a Prirodnich Zdroju
In the period 1991-2005 twelve soil taxonomical units covering 85 per cent of the total area of the Czech Republic were tested at 163 localities of arable and grassed soils. The total number of analyzed soil samples reached 3,865; the lowest number was for Phaeozems and the highest for Cambisols and Haplic Luvisols. Ten soil microbial parameters were determined as follows: microbial biomass carbon (MBC, 314.36-559.12 mg/kg), 0.5 mol/L K2SO4 extractable carbon (CE, 30.96-48.36 mg/kg), basal respiration (BR, 0.25-0.74 mg CO2/h/100 g), potential respiration with glucose (2.53-4.18 mg CO2/h/100 g), actual content of N-NH4 + (15.19-20.28 mg N-NH4 with peptone (134.23-193.39 mg N-NH4 +/24 h/100 g), actual content of N-NO3- (1.81-2.78 mg N-NO3 potential nitrification (3.47-19.01 mg N-NO3-/8 days/100 g), and three ratios: CE/MBC, MBC/Corg and BR/MBC (qCO2 = metabolic quotient). The following variables were also tested: soil moisture, soil organic carbon (Corg, 0.95-1.81%), total nitrogen (Nt, 0.09-0.20%), ratio Corg/Nt, pH(H2O), pH(KCl), sand, silt, clay and the quality of humus substances. The above-mentioned data do not include urban soils that are usually characterized with extremely low values.
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