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Article

The Influence of Grain Legume and Tillage Strategies on CO2 and N2O Gas Exchange under Varied Environmental Conditions

1
Department of People and Technology, Roskilde University, DK-4000 Roskilde, Denmark
2
CIRAD, Persyst Department, F-34398 Montpellier, France
3
Department of Geosciences and Natural Resource Management, University of Copenhagen, DK-1350 Copenhagen, Denmark
4
Department of Environmental Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
*
Author to whom correspondence should be addressed.
Academic Editor: Catherine Hénault
Agriculture 2021, 11(5), 464; https://doi.org/10.3390/agriculture11050464
Received: 24 March 2021 / Revised: 3 May 2021 / Accepted: 11 May 2021 / Published: 19 May 2021
(This article belongs to the Special Issue Strategies for Nitrous Oxide Emission Mitigation in Agrosystems)
By this in vitro study addressing greenhouse gas (GHG) emissions from soil-plant mesocosms, we suggest a method to investigate the joint effects of environmental conditions, growth of plants, and agricultural soil management. Soils from two long-term agricultural trials in France were placed in climate chambers. The rotation trial was with or without grain legumes, and the tillage trial used plowing or reduced tillage. Environmental conditions consisted of two contrasting temperature regimes combined with ambient (400 ppm) or high (700 ppm) CO2 concentrations in climate chambers. The plant growth went from seeding to vegetative growth. Carbon dioxide gas exchange measurements were conducted in both soil types for a period representing initial plant growth. The CO2 exchange was influenced by the growing plants increasing the mesocosm respiration and gross ecosystem production. The environmental settings had no noticeable impact on the CO2 exchange in the soils from the legume trial. The CO2 exchange from the tillage trial soils exhibited variations induced by the environmental conditions depending on the tillage treatment. The N2O emission measurements in the legume trial soils showed little variability based on rotation, however, in soils with legumes, indications that higher temperatures will lead to more N2O emission were seen. View Full-Text
Keywords: net ecosystem exchange; gross ecosystem production; mesocosm; rotation; soil tillage net ecosystem exchange; gross ecosystem production; mesocosm; rotation; soil tillage
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MDPI and ACS Style

Hansen, E.M.Ø.; Hauggaard-Nielsen, H.; Justes, E.; Ambus, P.; Mikkelsen, T.N. The Influence of Grain Legume and Tillage Strategies on CO2 and N2O Gas Exchange under Varied Environmental Conditions. Agriculture 2021, 11, 464. https://doi.org/10.3390/agriculture11050464

AMA Style

Hansen EMØ, Hauggaard-Nielsen H, Justes E, Ambus P, Mikkelsen TN. The Influence of Grain Legume and Tillage Strategies on CO2 and N2O Gas Exchange under Varied Environmental Conditions. Agriculture. 2021; 11(5):464. https://doi.org/10.3390/agriculture11050464

Chicago/Turabian Style

Hansen, Emilie M.Ø., Henrik Hauggaard-Nielsen, Eric Justes, Per Ambus, and Teis N. Mikkelsen 2021. "The Influence of Grain Legume and Tillage Strategies on CO2 and N2O Gas Exchange under Varied Environmental Conditions" Agriculture 11, no. 5: 464. https://doi.org/10.3390/agriculture11050464

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