Effects of the nitrification inhibitor acetylene on nitrous oxide emissions and ammonia-oxidizing microorganisms of different agricultural soils under laboratory incubation conditions

Rui Liu; Helen L Hayden; Hangwei Hu; Jizheng He; Helen Suter; Deli Chen

Journal article

Effects of the nitrification inhibitor acetylene on nitrous oxide emissions and ammonia-oxidizing microorganisms of different agricultural soils under laboratory incubation conditions

Rui Liu, Helen L Hayden, Hangwei Hu, Jizheng He, Helen Suter, Deli Chen

APPLIED SOIL ECOLOGY | ELSEVIER | Published : 2017

DOI: 10.1016/j.apsoil.2017.05.034

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Abstract

Acetylene (C2H2) is an effective nitrification inhibitor targeting autotrophic ammonia oxidizers, and has shown promise for improving nitrogen use efficiency by mitigating greenhouse gas nitrous oxide (N2O) emissions and reducing nitrate leaching. Its efficacy, however, varies considerably with edaphic and environmental conditions and remains largely less studied in dryland agricultural soils. Here we conducted two laboratory microcosm incubations to explore the efficacy of C2H2 across various agricultural soils and under different conditions. The first incubation was with four agricultural soils at 25°C and 60% water-filled pore space (WFPS), and the second incubation included one cropping ..

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University of Melbourne Researchers

Jim He Author Agriculture and Food

Helen Suter Author Agriculture and Food

Hang-Wei Hu Author Agriculture and Food

Deli Chen Author Agriculture and Food

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Grants

Awarded by Australian Research Council

Funding Acknowledgements

The authors would like to acknowledge the financial support by Incitec Pivot, the Australian Government Department of Agriculture through the Grains Research and Development Corporation, and Australian Research Council (DE150100870, DP160101028, LP160101134).