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Effects of 3,4-dimethylpyrazole phosphate and dicyandiamide on nitrous oxide emission in a greenhouse vegetable soil

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Listed:
  • Y.P. Kou

    (Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, P.R. China
    University of Chinese Academy of Sciences, Beijing, P.R. China)

  • K. Wei

    (Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, P.R. China)

  • G.X. Chen

    (Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, P.R. China)

  • Z.Y. Wang

    (Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, P.R. China)

  • H. Xu

    (Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, P.R. China)

Abstract

A laboratory study was conducted to determine the effect of 3,4-dimethylpyrazole phosphate (DMPP) and dicyandiamide (DCD) on nitrous oxide (N2O) emission, mineral nitrogen (NH4+-N, NO3--N) contents, as well as ammonia oxidizing and denitrifying microbes in a greenhouse vegetable soil. Five treatments were established at 55% and 75% water filled pore space (WFPS): no fertilizer; urea; urea + manure (UM); urea + manure + DCD (UMDCD) and urea + manure + DMPP (UMDMPP). The application rate of urea and manure was 1800 kg N/ha and 1000 kg N/ha, respectively. DMPP and DCD were applied at the rate of 0.5% and 2% of urea-N application rate, respectively. Compared to UMDCD treatment, UMDMPP treatment significantly reduced N2O emission and NO3--N content and delayed ammonia oxidation, and showed a stronger inhibition effect on ammonium-oxidizing bacteria at both WFPS. Moreover, the copy numbers of nirS and nirK genes decreased significantly in the presence of DMPP at both WFPS, but were not affected by DCD. These results suggest that the application of DMPP is more effective than DCD on N2O mitigation in high N level vegetable soil, although the application rate of DMPP was one quarter that of DCD.

Suggested Citation

  • Y.P. Kou & K. Wei & G.X. Chen & Z.Y. Wang & H. Xu, 2015. "Effects of 3,4-dimethylpyrazole phosphate and dicyandiamide on nitrous oxide emission in a greenhouse vegetable soil," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 61(1), pages 29-35.
    • Handle: RePEc:caa:jnlpse:v:61:y:2015:i:1:id:762-2014-pse
    DOI: 10.17221/762/2014-PSE
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    References listed on IDEAS

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    1. X.X. Dong & L.L. Zhang & Z.J. Wu & H.W. Zhang & P. Gong, 2013. "The response of nitrifier, N-fixer and denitrifier gene copy numbers to the nitrification inhibitor 3,4-dimethylpyrazole phosphate," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 59(9), pages 398-403.
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    Cited by:

    1. Jie Zhang & Jia Liu & Guilong Li & Meng Wu, 2024. "Screening Potential Nitrification Inhibitors through a Structure–Activity Relationship Study—The Case of Cinnamic Acid Derivatives," Sustainability, MDPI, vol. 16(13), pages 1-10, July.

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