IDEAS home Printed from https://ideas.repec.org/a/caa/jnlpse/vpreprintid320-2024-pse.html
   My bibliography  Save this article

Enhanced maize yield and nitrogen efficiency with low molecular weight fulvic acid: insights into chlorophyll a/b ratio and nitrogen metabolising enzyme activity

Author

Listed:
  • Fugui Li

    (College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, P.R. China)

  • Shujie Zhang

    (College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, P.R. China)

  • Longhang Chai

    (College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, P.R. China
    Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs, Beijing, P.R. China)

  • Zhiqiang Guo

    (College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, P.R. China)

  • Peipei Li

    (College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, P.R. China)

  • Yanlai Han

    (College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, P.R. China
    Co-Construction State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, Henan, P.R. China)

  • Yi Wang

    (College of Resources and Environment, Henan Agricultural University, Zhengzhou, Henan, P.R. China
    Co-Construction State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou, Henan, P.R. China)

Abstract

This study investigates the impact of various molecular weights (MWs) of fulvic acid (FA) on maize growth, grain yield, and nutrient uptake under different nitrogen levels (NLs). A 2 × 3 balanced design was employed, with high (0.2 g N/kg) and low (0.05 g N/kg) NLs, and three FA MW ranges (W1 ≤ 3 000 D, 3 000 < W2 ≤ 10 000 D, W3 > 10 000 D) were applied at 25 mg/kg in soil. Significant interactions between NLs and FA MWs were observed in chlorophyll a/b ratio, nitrate reductase and glutamate dehydrogenase activities, nitrogen content, and nitrogen uptake efficiency. Overall, under different NLs, FA application reduced chlorophyll a/b ratio, increased nitrogen metabolism enzyme activities, promoted maize growth, and thereby improved grain yield and nitrogen fertiliser uptake efficiency. Additionally, the promotion effect of low MW FA on these indicators outweighed that of high MW FA, yet the latter exhibited a more pronounced effect on increasing grain nitrogen concentration. Structural equation model analysis revealed direct effects of chlorophyll content, nitrogen accumulation, nitrogen uptake efficiency, NLs and FA MWs on maize grain yield, with FA MWs negatively impacting yield.

Suggested Citation

  • Fugui Li & Shujie Zhang & Longhang Chai & Zhiqiang Guo & Peipei Li & Yanlai Han & Yi Wang, . "Enhanced maize yield and nitrogen efficiency with low molecular weight fulvic acid: insights into chlorophyll a/b ratio and nitrogen metabolising enzyme activity," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 0.
    • Handle: RePEc:caa:jnlpse:v:preprint:id:320-2024-pse
    DOI: 10.17221/320/2024-PSE
    as

    Download full text from publisher

    File URL: http://pse.agriculturejournals.cz/doi/10.17221/320/2024-PSE.html
    Download Restriction: free of charge
    File URL: https://libkey.io/10.17221/320/2024-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:preprint:id:320-2024-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.