IDEAS home Printed from https://ideas.repec.org/a/caa/jnlpse/v58y2012i5id749-2011-pse.html
   My bibliography  Save this article

Effect of elevated CO2 and temperature on phosphorus efficiency of wheat grown in an Inceptisol of subtropical India

Author

Listed:
  • Manoj-Kumar

    (Division of Soil Science and Agricultural Chemistry, Indian Agricultural Research Institute, New Delhi, India)

  • A. Swarup

    (Division of Soil Science and Agricultural Chemistry, Indian Agricultural Research Institute, New Delhi, India)

  • A.K. Patra

    (Division of Soil Science and Agricultural Chemistry, Indian Agricultural Research Institute, New Delhi, India)

  • J.U. Chandrakala

    (Division of Plant Physiology, Indian Agricultural Research Institute, New Delhi, India)

  • K.M. Manjaiah

    (Division of Soil Science and Agricultural Chemistry, Indian Agricultural Research Institute, New Delhi, India)

Abstract

In a phytotron experiment, wheat was grown under two levels of atmospheric CO2 [ambient (385 ppm) vs. elevated (650 ppm)], two levels of temperature (ambient vs. ambient +3°C) superimposed with three levels of phosphorus (P) fertilization: 0, 100, and 200% of recommended dose. Various measures of P acquisition and utilization efficiency were estimated at crop maturity. In general, dry matter yields of all plant parts increased under elevated CO2 (EC) and decreased under elevated temperature (ET); however, under concurrently elevated CO2 and temperature (ECT), root (+36%) and leaf (+14.7%) dry weight increased while stem (-12.3%) and grain yield (-17.3%) decreased, leading to a non-significant effect on total biomass yield. Similarly, total P uptake increased under EC and decreased under ET, with an overall increase of 17.4% under ECT, signifying higher P requirements by plants grown thereunder. Although recovery efficiency of applied P fertilizer increased by 27%, any possible benefit of this increase was negated by the reduced physiological P efficiency (PPE) and P utilization efficiency (PUtE) under ECT. Overall, there was ~17% decline in P use efficiency (PUE) (i.e. grain yield/applied P) of wheat under ECT.

Suggested Citation

  • Manoj-Kumar & A. Swarup & A.K. Patra & J.U. Chandrakala & K.M. Manjaiah, 2012. "Effect of elevated CO2 and temperature on phosphorus efficiency of wheat grown in an Inceptisol of subtropical India," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 58(5), pages 230-235.
    • Handle: RePEc:caa:jnlpse:v:58:y:2012:i:5:id:749-2011-pse
    DOI: 10.17221/749/2011-PSE
    as

    Download full text from publisher

    File URL: http://pse.agriculturejournals.cz/doi/10.17221/749/2011-PSE.html
    Download Restriction: free of charge
    File URL: http://pse.agriculturejournals.cz/doi/10.17221/749/2011-PSE.pdf
    Download Restriction: free of charge
    File URL: https://libkey.io/10.17221/749/2011-PSE?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:caa:jnlpse:v:58:y:2012:i:5:id:749-2011-pse. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Ivo Andrle (email available below). General contact details of provider: https://www.cazv.cz/en/home/ .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.