Journal article

Influence of nitrification inhibitors on nitrification and nitrous oxide (N2O) emission from a clay loam soil fertilized with urea

Deli Chen, Helen C Suter, Arshad Islam, Robert Edis

SOIL BIOLOGY & BIOCHEMISTRY | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2010

Abstract

Laboratory incubation experiments were conducted to compare the effects of the nitrification inhibitors 3,4-dimethylpyrazole phosphate (DMPP) and 2-Chloro-6-(trichloromethyl)-pyridine (N-serve) on nitrification and nitrous oxide (N2O) emission from a Vertosol from southern Australia, under controlled moisture and temperature. Nitrification rates in the control soil were strongly influenced by the temperature and moisture, increasing by a factor of 3.6 for each 10 °C increase between 5 and 25 °C. DMPP inhibited nitrification effectively for 42 days at 5–15 °C and 40–60% water filled pore space (WFPS). DMPP also slowed nitrification appreciably at 25 °C when the soil was at 40% WFPS, but was l..

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Grants

Awarded by Incitec-Pivot Limited, Australian Centre for International Agricultural Research


Funding Acknowledgements

This work was funded by Incitec-Pivot Limited, Australian Centre for International Agricultural Research project (LWR/2003/039) and DAFF-GRDC's Climate Change Research Program. Dr. X. Chen provided assistance with the laboratory trials.