IDEAS home Printed from https://ideas.repec.org/a/spr/ssefpa/v16y2024i5d10.1007_s12571-024-01478-5.html
   My bibliography  Save this article

Maize-grain zinc and iron concentrations as influenced by agronomic management and biophysical factors: a meta-analysis

Author

Listed:
  • Job Kihara

    (International Center for Tropical Agriculture (CIAT), ICIPE Duduville Complex)

  • Gudeta W Sileshi

    (Addis Ababa University)

  • Peter Bolo

    (International Center for Tropical Agriculture (CIAT), ICIPE Duduville Complex)

  • Dominic Mutambu

    (International Center for Tropical Agriculture (CIAT), ICIPE Duduville Complex)

  • Kalimuthu Senthilkumar

    (Africa Rice Center (AfricaRice))

  • Andrew Sila

    (International Center for Tropical Agriculture (CIAT), ICIPE Duduville Complex)

  • Mina Devkota

    (International Center for Agricultural Research in the Dry Areas (ICARDA))

  • Kazuki Saito

    (International Rice Research Institute (IRRI))

Abstract

Human Zn and Fe deficiencies can be reduced through agronomic biofortification, but information on factors influencing maize grain-Zn and -Fe levels remain scanty. This analysis: (1) Establishes the global distribution of Zn and Fe concentrations in maize grain; (2) assess the contribution of different agronomic practices to the effectiveness of Zn fertilizers for increasing grain yields, and Zn and Fe levels in maize grain; and (3) identify key biophysical factors and metrics to more effectively guide agronomic biofortification of Zn. Using 5874 data points in 138 published papers from 34 countries, we estimated a 7.5% probability of grain-Zn concentrations exceeding the benchmark target of 38 mg kg−1. Using 3187 data points from 65 studies across 27 countries we estimated a 8.5% probability of grain-Fe concentrations exceeding the target of 60 mg kg−1. Our 70-paper meta-analysis revealed that applying Zn and/or Fe in combination with inorganic NPK fertilizer can increase maize-grain-Zn and-Fe concentrations by 31% (p

Suggested Citation

  • Job Kihara & Gudeta W Sileshi & Peter Bolo & Dominic Mutambu & Kalimuthu Senthilkumar & Andrew Sila & Mina Devkota & Kazuki Saito, 2024. "Maize-grain zinc and iron concentrations as influenced by agronomic management and biophysical factors: a meta-analysis," Food Security: The Science, Sociology and Economics of Food Production and Access to Food, Springer;The International Society for Plant Pathology, vol. 16(5), pages 1147-1173, October.
    • Handle: RePEc:spr:ssefpa:v:16:y:2024:i:5:d:10.1007_s12571-024-01478-5
    DOI: 10.1007/s12571-024-01478-5
    as

    Download full text from publisher

    File URL: http://link.springer.com/10.1007/s12571-024-01478-5
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1007/s12571-024-01478-5?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:spr:ssefpa:v:16:y:2024:i:5:d:10.1007_s12571-024-01478-5. 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: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.springer.com .

    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.