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Using QUEFTS model for estimating nutrient requirements of maize in the Northeast China

Author

Listed:
  • Wenting JIANG

    (College of Land and Environment, Shenyang Agriculture University, Shenyang, Liaoning, P.R. China)

  • Xiaohu LIU
  • Wen QI

    (College of Land and Environment, Shenyang Agriculture University, Shenyang, Liaoning, P.R. China)

  • Xiaonan XU

    (College of Land and Environment, Shenyang Agriculture University, Shenyang, Liaoning, P.R. China)

  • Yucui ZHU

    (College of Land and Environment, Shenyang Agriculture University, Shenyang, Liaoning, P.R. China)

Abstract

Accurate estimating of the balanced nutrition for maize is necessary for optimizing fertilizer management to prevent nutrient supply surplus or deficiency. Data from 300 field experiments in the Northeast China conducted between 2006 and 2011 were gathered to study the characteristics of maize yield, and using the QUEFTS model to estimate the balanced nutrition at different yield potential. The average grain yield was 10 427 kg/ha, and average internal efficiencies were 54.3, 251.5 and 78.2 kg grain per kg plant nitrogen (N), phosphorus (P) and potassium (K), respectively. With the harvest index values < 0.40 as outliers were excluded, the model simulated a linear-parabolic-plateau curve for the balanced N, P and K uptake when the initial yield target increased to the yield potential levels of 10 000 to 14 000 kg/ha. When the yield target reached approximately 60-70% of the yield potential, 16.7 kg N, 3.8 kg P, and 11.4 kg K were required to produce 1000 kg grain. The corresponding internal efficiencies were 60.0, 265.7 and 88.0 kg grain per kg plant N, P and K, respectively. These results contributed to improving nutrient use efficiency, and to demonstrate that the QUEFTS model could be a promising approach for estimating the balanced nutrition.

Suggested Citation

  • Wenting JIANG & Xiaohu LIU & Wen QI & Xiaonan XU & Yucui ZHU, 2017. "Using QUEFTS model for estimating nutrient requirements of maize in the Northeast China," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 63(11), pages 498-504.
    • Handle: RePEc:caa:jnlpse:v:63:y:2017:i:11:id:417-2017-pse
    DOI: 10.17221/417/2017-PSE
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    References listed on IDEAS

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    1. Deepak K. Ray & Navin Ramankutty & Nathaniel D. Mueller & Paul C. West & Jonathan A. Foley, 2012. "Recent patterns of crop yield growth and stagnation," Nature Communications, Nature, vol. 3(1), pages 1-7, January.
    2. Patricio Grassini & Kent M. Eskridge & Kenneth G. Cassman, 2013. "Distinguishing between yield advances and yield plateaus in historical crop production trends," Nature Communications, Nature, vol. 4(1), pages 1-11, December.
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