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Type of publication: research article
Type of publication (PDB): Straipsnis recenzuojamoje užsienio tarptautinės konferencijos medžiagoje / Article in peer-reviewed foreign international conference proceedings (P1d)
Field of Science: Ekologija ir aplinkotyra / Ecology and environmental sciences (N012)
Author(s): Baležentienė, Ligita
Title: Bio indication of soil fertility related to different farming systems
Is part of: Land degradation and challenges in sustainable soil management : 8th International Soil Science Congress, May 15-17, 2012, Çeşme - İzmir, Turkey : Proceedings book. Vol. 1 Çeşme - İzmir, 2012
Extent: p. 237-242
Date: 2012
Keywords: Bio indication;Soil fertility;Enzymes
ISBN: 978-975-96629-6-7
Abstract: Fertility is the most practically important soil characteristic, which depends on soil biochemical components and their ratio. Application of bio-indices and biological methods is recently promoted to ascertain soil fertility. The objective of this study was to determine the soil bioactivity responses (saccharase and urease activity) on different land management systems and soil genesis type, content of soil organic carbon (SOC), total nitrogen (N), and C/N ratio. The trial was comprised of eight experimental plots (three land management systems and two crops groups: legumes and grasses). Site soil (Hapli-Epihypogleyic Luvisol (LVg-p-w-ha), Albi Epihypogleyic Luvisol (LVg-p-w-ab), and Hapli-Albic Luvisol (LVA-Ha), artificial drainage) samples collected from rotation fields of different fertilizing and farming systems, namely extensive (ExF), conventional (CF) and organic (OF)) at the Lithuanian University of Agriculture. CF and OF promoted the highest enzyme activity. Enzyme activity correlated stronger with SOC (r=0.7) or ratio C/N (r=0.6) than that with total nitrogen content (r=0.5-0.6) Significantly higher 3 year mean value of saccharase (27.00 and 12.6 mg CG g"1) and urease (5.78 and 4.16 mg NH4+-N g'1 24 h-1) were observed in CF and OF rotation fields respectively. Statistically significant differences between farming management types and soil biochemical indices revealed the relevance of enzyme activity as a proxy indicator for evaluating soil fertility
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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