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Title: FARM MANAGEMENT PRACTICE IMPACT ON N2O EMISSION
FARM MANAGEMENT PRACTICE IMPACT ON N2O EMISSION

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Dace Butenaite; Sindija Liepa; Kristaps Siltumens; Jovita Pilecka-Ulcugaceva; Inga Grinfelde
10.5593/sgem2022V/4.2/s19.34
10.5593/sgem2022V/4.2
1314-2704
978-619-7603-50-7
English
22
4.2
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Air Pollution and Climate Change
Agricultural activities account for about a third of greenhouse gas (GHG) emissions. Most of the GHG in the atmosphere are carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O). The aim of this study is to measure N2O isotopes in two differently managed agricultural soils. One soil is with organic farming and the other with conventional. Samples were collected in 32 experimental plots as well as a control plot. The samples are thus weighed in 3 l buckets, each 1.8 kg in total. Two samples were made from each plot so that they could have a different moisture regime. Moistening is designed for wet aerobic and wet anaerobic soil conditions. Information on changes in soil weight after soil wetting was also collected. Measurements for N2O isotopes were performed using a Picarro G5131-i instrument under laboratory conditions. The obtained data were collected and analysed. It was concluded that not all differences and interrelationships of the N2O isotope data obtained can be directly attributed to soil management. Differences between the effects of the microorganism population and the physical properties of the soil cannot be ruled out. The maximum value of ?15NSP value is 18.58 and the minimum value is -53.41. On the other hand, the maximum value of ?15Nbulk values is 26.76, and the minimum value is -56.97. In the conclusions, we get that both nitrification and denitrification dominate among cultures.
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The study was carried out within the framework of the implementation of the Latvian University of Life Sciences and Technologies research program. Within the funding allocated to the project P9 “The Influence of Soil Chemical Composition on GHG Emissions from Agricultural Land”.
conference
https://doi.org/10.5593/sgem2022V/4.2/s19.34
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Proceedings of 22nd International Multidisciplinary Scientific GeoConference SGEM 2022
22nd International Multidisciplinary Scientific GeoConference SGEM 2022, 06-08 December, 2022
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Turkish Acad Sci.
273-280
06-08 December, 2022
website
8851
N2O isotopes, biological agriculture, conventional agriculture, Picarro G5131-i