Nitrification and denitrification derived N2O production from a grassland soil under application of DCD and Actilith F2
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The relative contribution of nitrification and denitrification to N2O production was investigated by means of soil incubations with acetylene in a mixed clover/ryegrass sown sward 5 days after application of a mineral fertiliser (calcium ammonium nitrate) or an organic one (cattle slurry) with and without the addition of the nitrification inhibitor dicyandiamide (DCD) and the commercial slurry additive Actilith-F2. At this time, maximum field N2O emissions were taking place. N2O production by the slurry amended soil was twice as high as that of the mineral amended one. N2O came in a greater proportion from nitrification rather than from denitrification in the slurry treatment, while for the mineral fertilisation most N2O came from denitrification. The addition of DCD to slurry produced a decrease in N2O production both from nitrification and denitrification. No reduction in N2O losses was observed from addition of DCD to the mineral fertilisation, although DCD resulted effective in reducing the nitrification rate by 53% both in the slurry and the mineral fertilisation. Actilith F2 induced a high nitrification rate and N2O production from denitrification was reduced while that from nitrification was not.
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- ALPKEM (1986). Nitrate + nitrite nitrogen (A303–5170). P 1–lO RFA methodology. Alpkem Corp Clackamas, ORGoogle Scholar
- ALPKEM (1987). Ammonia nitrogen (A303–S020).IP 1–7. RFA methodology. Alpkem Corp. Clackamas, OR0Google Scholar
- Hart, S, Stark J, Davidson, E & Firestone, M (1994). Nitrogen, mineralization, immobilisation and nitrification. In: Methods of soil Analyses, Part 2: Microbiological and Biochemical Properties Book Series, no. 5, pp 985–1017Google Scholar
- Hauck, RD (1980). Mode of action of nitrification inhibitors. In Meisinger JJ et al. (ed) Nitrification inhibitors-Potentials and limitations. ASA Spec Publ 38.ASA and SSSA, Madison, WIGoogle Scholar
- Hutchinson, GL & Davidson, EA (1993). Processes for production and consumption of gaseous nitrogen oxides in soil. In: Agricultural Ecosystem Effects on Trace Gases and Global Climate Change. ASA Special Publication no. 55Google Scholar
- Klemedtsson, L, Svensson, BJH & Rosswall, T (1988). A method of selective inhibition to distinguish between nitrification and denitrification as sources of nitrous oxide in soil. Biol Fertil Soils 6: 112–119Google Scholar
- Neetson, JJ & Van Veen, JA (1987). Mechanistic and practical modelling of nitrogen mineralization-immobilization in soils. In: Wilson J.R. (ed) Advances in Nitrogen Cycling in Agricultural Ecosystems pp 145–155. CAB International, Wallingford, UKGoogle Scholar
- Pain, BF, Thompson, RB, Rees, YJ & Skinner JH (1990). Reducing gaseous losses of nitrogen from cattle slurry applied to grassland by the use of additives. J Sci Food Agric 50: 141–153Google Scholar
- Paul, JW & Zebarth, BJ (1997). Denitrification during the growing season following dairy cattle slurry and fertilizer application for silage corn. Can J Soil Sci 77: 241–248Google Scholar
- Paul, JW, Etches, V & Zebarth, BJ (1997). Increased denitrification below the root zone in the fall following a spring manure application. Can J Soil Sci 77: 249–251Google Scholar
- Rodgers, GA & Asworth, J (1982). Use of nitrification inhibitors to improve recovery of mineralised by winter wheat. J Sci Food Agric 33: 1219–1226Google Scholar
- Tiedje, JM (1982). Denitrification. Methods of Soil analysis, Part 2. Chemical and Microbiological Properties-Agronomy Monograph no. 9: 1011–1026Google Scholar