Journal article

The effect of nitrification inhibitors in reducing nitrification and the ammonia oxidizer population in three contrasting soils

Rui Liu, Helen Hayden, Helen Suter, Jizheng He, Deli Chen

JOURNAL OF SOILS AND SEDIMENTS | SPRINGER HEIDELBERG | Published : 2015

Abstract

Purpose: 3,4-Dimethylpyrazole phosphate (DMPP) and acetylene (C2H2) are widely used nitrification inhibitors. These nitrification inhibitors have shown inconsistent efficacy in different soils, demonstrating the importance of determining which soil and microbial factors cause this variability. The aim of the present study was to investigate the efficacy of DMPP and C2H2 to inhibit nitrification and the ammonia oxidizer population in three contrasting soil types from Australia. Materials and methods: Three contrasting soils of different pHWater (4.6, 7.0, and 8.0) collected from different agriculture systems in Australia were used in a laboratory incubation experiment for 28 days to compare t..

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Grants

Funding Acknowledgements

The authors would like to acknowledge the financial support by Incitec Pivot Limited and the Australian Government Department of Agriculture through the Grains Research and Development Corporation. Dr. John Freney, Dr. Shu Kee (Raymond) Lam, and Dr. Hangwei Hu provided their assistance during manscript preparation.