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Changes in direct CO2 and N2O emissions from a loam Haplic Luvisol under conventional moldboard and reduced tillage during growing season and post-harvest period of red clover

Authors
  • Horák, Ján1
  • Igaz, Dušan1
  • Aydin, Elena1
  • Šimanský, Vladimír2
  • Buchkina, Natalya3
  • Balashov, Eugene3
  • 1 Slovak University of Agriculture, Hospodárska 7, 94976 , (Slovakia)
  • 2 Slovak University of Agriculture, Tr. A. Hlinku 2, 94976 , (Slovakia)
  • 3 Agrophysical Research Institute, Grazhdansky pr. 14, 195220, Russia , (Russia)
Type
Published Article
Journal
Journal of Hydrology and Hydromechanics
Publisher
Sciendo
Publication Date
Aug 10, 2020
Volume
68
Issue
3
Pages
271–278
Identifiers
DOI: 10.2478/johh-2020-0023
Source
De Gruyter
Keywords
License
Green

Abstract

The objectives of the study were to: (1) assess the strength of associations of direct CO2 and N2O emissions with the seasonal variations in the relevant soil properties under both tillage systems; 2) evaluate how CT and RT affect magnitudes of seasonal CO2 and N2O fluxes from soil. Field studies were carried out on plots for conventional tillage (up to 0.22–0.25 m) and reduced tillage (up to 0.10–0.12 m) during the growing season and post-harvest period of red clover. The results showed that daily CO2 emissions significantly correlated only with soil temperature during the growing season under conventional and reduced tillage. Soil temperature demonstrated its highest influence on daily N2O emissions only at the beginning of the growing season in both tillage systems. There were no significant inter-system differences in daily CO2 and N2O emissions from soil during the entire period of observations. Over the duration of post-harvest period, water-filled pore space was a better predictor of daily CO2 emissions from soils under CT and RT. The conventional and reduced tillage did not cause significant differences in cumulative N2O and CO2 fluxes from soil.

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