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Effect of Orychophragmus violaceus incorporation on nitrogen uptake in succeeding maize

Author

Listed:
  • L. Yang

    (Graduate School, Chinese Academy of Agricultural Sciences, Beijing, P.R. China)

  • W. Cao

    (Graduate School, Chinese Academy of Agricultural Sciences, Beijing, P.R. China
    Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, P.R. China)

  • K. Thorup-Kristensen

    (Department of Agriculture and Ecology, Faculty of Life Sciences, University)

  • J. Bai

    (Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, P.R. China)

  • S. Gao

    (Graduate School, Chinese Academy of Agricultural Sciences, Beijing, P.R. China)

  • D. Chang

    (Graduate School, Chinese Academy of Agricultural Sciences, Beijing, P.R. China)

Abstract

Winter Orychophragmus violaceus (OV)/spring maize is a novel eco-agricultural system in North China Plain, but little is known about OV's nitrogen (N) effects on succeeding maize growth and its contribution to maize N uptake and utilization during the growth. A pot experiment using 15N was conducted, including five treatments: (1) Control - without OV incorporation and N fertilizer; (2) G - high 15N labelled-OV incorporation; (3) 50%G - lower 15N labelled-OV incorporation; (4) F - 15N labelled urea fertilizer merely; (5) G + F - high OV incorporation combined with urea fertilizer. Increasing OV incorporation rate increased maize dry matter, yield, and total N uptake. Approximately 84-97% of the released OV's nitrogen was absorbed before the V8 (the 8th leaf fully expanded) stage in G and 50%G treatments. However, only 19% of the released OV's nitrogen was taken up at this period in G + F, and the rest was absorbed from V8 to maturity. G treated maize doubled the OV's nitrogen uptake than the 50%G at maturity, and also had higher percentage contribution of OV's N to total N accumulation. The G and 50%G maize obtained similar OV's nitrogen use efficiency of 30%; however, this efficiency was further improved to 43% in the G + F. And more, G + F treatment further improved the maize yield by 9% compared to F treatments.

Suggested Citation

  • L. Yang & W. Cao & K. Thorup-Kristensen & J. Bai & S. Gao & D. Chang, 2015. "Effect of Orychophragmus violaceus incorporation on nitrogen uptake in succeeding maize," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 61(6), pages 260-265.
    • Handle: RePEc:caa:jnlpse:v:61:y:2015:i:6:id:178-2015-pse
    DOI: 10.17221/178/2015-PSE
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