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Type of publication: research article
Type of publication (PDB): Straipsnis konferencijos medžiagoje Clarivate Analytics Web of Science ar/ir Scopus / Article in Clarivate Analytics Web of Science or Scopus DB conference proceedings (P1a)
Field of Science: Ekologija ir aplinkotyra / Ecology and environmental sciences (N012)
Author(s): Baležentienė, Ligita
Title: Hydrolases activity in differently managed agro-ecosystems
Is part of: Rural development 2013 : 6th international scientific conference, 28-29 November, 2013, Akademija : proceedings. Akademija : Aleksandras Stulginskis University, Vol. 6, b. 2 (2013)
Extent: p. 17-21
Date: 2013
Keywords: Hydrolases;Agro-ecosystem;Farming
Abstract: Soil samples were collected from different farming fields of the Training Farm (Aleksandras Stulginskis University): extensive (abandoned barley Hordeum vulgaris L. field, meadow and fodder galega (Galega orientalis Lam.) stand), conventional, and organic (winter wheat Triticum aestivum L. and and legumes mixtures) rotation crops in the middle of vegetation, June of 2007-2009. The objective of this study was to determine the soil bioactivity responses (saccharase and urease activity) on different land management systems and main recourses of ecological factors such as 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 gramineous). Hydrolases 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 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 oatvetch- barley of conventional farming and winter wheat-oat-pea-barley rotation fields of Organic Farm respectively. In most of the studies, it was observed that enzymes behave differently with different SOC content. Without mineral fertilizers application resulted in the least activity of urease (1.13 mg NH4 +–N g-1) and saccharase (8.40 mg CG g-1 24 h-1). A significant increase of hydrolases activity has been observed in conventional (144- 413% of urease and 49-50% of saccharase) and organic (219-269% of urease and 78-221% of saccharase) farming as compared
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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