The influence of farming systems on area heterogeneity of total organic carbon contents
2009
Heczko, J., Slovak Univ. of Agriculture in Nitra (Slovak Republic) | Zaujec, A., Slovak Univ. of Agriculture in Nitra (Slovak Republic)
The aim of paper was study the influence of different farming systems on area heterogeneity of total soil organic carbon contents. Soil samples were taken in spring 1997 and 2009 from top layer 0-0.2 m from long time field trial. The integrated and ecological farming systems were established at the Slovak Agricultural University Research Station Dolná Malanta on Haplic Luvisol clay-loamy soil in the fall of 1990. We measured total soil organic carbon contents (SOC) in the fertilized and unfertilized variants of integrated and ecological farming systems. In spring 2009 was on ecological farming system in the fertilized variant (with farmyard manure) average of total organic carbon content 1.46% and in the unfertilized variant 1.28%. We note in comparing with the year 1997 higher content of total organic carbon by 0.28% in the fertilized variant and lower content by 0.12% in the unfertilized variant. In spring 2009 was on integrated farming system in the fertilized variant (with farmyard manure and NPK) average total organic carbon content 1.08% and in the unfertilized variant 0.92%. Compared with the year 1997 the total organic carbon content declined by 0.37% in the fertilized variant and in the unfertilized variant declined upon 0.72%. We can state, from results obtained in our study, that ecological farming systems is from long-term duration (12 years) more sustainable and stabile for total organic carbon content as integrated farming systems.
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