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Fate of applied urea 15N in a soil-maize system as affected by urease inhibitor and nitrification inhibitor

Author

Listed:
  • L. Zhang

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

  • Z. Wu

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

  • Y. Jiang

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

  • L. Chen

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

  • Y. Song

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

  • L. Wang

    (Agricultural Environment and Resources Research Center, Jilin Academy of Agricultural Sciences, Changchun, P.R. China)

  • J. Xie

    (Agricultural Environment and Resources Research Center, Jilin Academy of Agricultural Sciences, Changchun, P.R. China)

  • X. Ma

    (Institute of Heilongjiang Academy of Agricultural Sciences, Harbin, P.R. China)

Abstract

A micro-plot field experiment with reduced urea 15N application was conducted to study the effects of urease inhibitor NBPT (N-(n-butyl) thiophosphoric triamide) and nitrification inhibitor DMPP(3,4-dimethyl-1H-pyrazolium dihydrogen) on the fate of applied urea 15N; it aimed to find an efficient way to reduce the urea N application rate while improving the agronomic and environmental benefits. Five treatments were installed, i.e., 180 kg N/ha (N1, conventional application rate), 126 kg N/ha (N2, reduced to 70% conventional application rate), N2 + NBPT, N2 + DMPP, and N2 + NBPT + DMPP. Compared with treatment N1, all the other treatments had a significantly higher total 15N recovery by both soil and plant (P < 0.05 48.20, 41.39, 37.69, 38.85 and 34.83% soil recovery for N2 + NBPT + DMPP, N2 + DMPP, N2 + NBPT, N2 and N1treatment, respectively; and 42.68, 40.86, 40.25, 37.18 and 36.30% plant recovery for N2 + NBPT + DMPP, N2 + DMPP, N2 + NBPT, N2, and N1 treatment, respectively). In the plant 15N recovery, the 15N absorbed in grain/stem was highest in treatment N2 + NBPT + DMPP. The maize biomass and the maize yield had a slight increase in treatment N2 + NBPT + DMPP, compared with those in treatment N1. In sum, for the maize production in study area, N2 + NBPT + DMPP application method would be a feasible way to ensure the normal maize yield while improving yield quality, saving urea fertilizer, and protecting the environment.

Suggested Citation

  • L. Zhang & Z. Wu & Y. Jiang & L. Chen & Y. Song & L. Wang & J. Xie & X. Ma, 2010. "Fate of applied urea 15N in a soil-maize system as affected by urease inhibitor and nitrification inhibitor," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 56(1), pages 8-15.
    • Handle: RePEc:caa:jnlpse:v:56:y:2010:i:1:id:129-2009-pse
    DOI: 10.17221/129/2009-PSE
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    References listed on IDEAS

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    1. J. Zhang & J. Qin & W. Yao & L. Bi & T. Lai & X. Yu, 2009. "Effect of long-term application of manure and mineral fertilizers on nitrogen mineralization and microbial biomass in paddy soil during rice growth stages," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 55(3), pages 101-109.
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    Cited by:

    1. Kaikuo Wu & Ping Gong & Lili Zhang & Zhijie Wu & Xueshi Xie & Hengzhe Yang & Wentao Li & Yuchao Song & Dongpo Li, 2019. "Yield-scaled N2O and CH4 emissions as affected by combined application of stabilized nitrogen fertilizer and pig manure in rice fields," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 65(10), pages 497-502.

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