Please use this identifier to cite or link to this item:https://hdl.handle.net/20.500.12259/87143
Type of publication: Knygos dalis / Part of book (Y)
Field of Science: Ekologija ir aplinkotyra / Ecology and environmental sciences (N012)
Author(s): Baležentienė, Ligita
Title: Indicating Soil Quality Using Urease and Saccharase Activity in Abandoned Grassland and Differently Managed Crop Fields
Is part of: Quantitative Traits Breeding for Multifunctional Grasslands and Turf / editors: Dejan Sokolović, Christian Huyghe, Jasmina Radović. Dordrecht : Springer, 2014
Extent: p. 387-394
Date: 2014
Keywords: Agroecology;Indicators;Enzyme activity
ISBN: 9789401790437
Abstract: In order to ascertain and make a comparison of bioactivity variation during vegetation period, soil samples were collected in fields of different fertilizing and farming systems: extensive (ExF), conventional (CF) and organic (OF) in order to determine the saccharase and urease activity responses to different land management systems and main soil quality indices: soil organic carbon (SOC), total nitrogen (N), and C/N ratio. Assessed hydrolases were observed as sensitivity indicators suitable to evaluate parameters of soil quality. The highest decrease and the lowest rates of urease (1.13 mg NH4 +–N g−1) and saccharase (8.40 mg CG g−1 24 h−1) activities were observed in abandoned grassland soil where mineral fertilizers were not applied. Enzyme activity correlated stronger with SOC (r = 0.7) or C/N ratio (r = 0.6) than that with total nitrogen content (r = 0.5 − 0.6). A 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 +–Ng−1 24 h−1) activities were observed in soil under conventional and organic management compared with abandoned grassland. Thereafter enzyme activities might be related to the different levels of soil fertility
Internet: https://hdl.handle.net/20.500.12259/87143
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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