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Integrated Use of Humic Acid and Plant Growth Promoting Rhizobacteria to Ensure Higher Potato Productivity in Sustainable Agriculture

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  • Zehra Ekin

    (Faculty of Agriculture, Department of Field Crops, Van Yuzuncu Yil University, 65080 Van, Turkey)

Abstract

In sustainable agriculture, seeking eco-friendly methods to promote plant growth and improve crop productivity is a priority. Humic acid (HA) and plant growth promoting rhizobacteria (PGPR) are among the most effective methods that utilize natural biologically-active substances. The aim of the present study was to analyze the effect of the presence of HA on potato ( Solanum tuberosum L.) inoculation with PGPR ( Bacillus megatorium and Bacillus subtilis ) when compared to control and recommended doses of NPK. Seed tubers treated by humic acid (200, 400, and 600 kg ha −1 ) and PGPR, separately or in combination, and NPK (50% and 100%) were planted into soil and untreated soil. Treatments were assessed for plant growth, classified tuber yields, quality, and mineral contents of potato tubers. There were highly significant increases in potato growth, tuber yields, and quality in PGPR and HA inoculated crops. Tuber size, weight, specific gravity, dry matter, starch, protein, and mineral contents (except Cu) were improved with PGPR treatments and further increased when administered with humic acids. Inoculation with PGPR mixed culture and 400 kg ha −1 HA increased total potato tuber yield by about 140% while conventional single treatment of 100% NPK fertilizer only led to an increase in potato production of 111% when compared to the control. The results demonstrated that this integrated approach has the potential to accelerate the transformation from conventional to sustainable potato production.

Suggested Citation

  • Zehra Ekin, 2019. "Integrated Use of Humic Acid and Plant Growth Promoting Rhizobacteria to Ensure Higher Potato Productivity in Sustainable Agriculture," Sustainability, MDPI, vol. 11(12), pages 1-13, June.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:12:p:3417-:d:241752
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    References listed on IDEAS

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    1. Farooq Shah & Wei Wu, 2019. "Soil and Crop Management Strategies to Ensure Higher Crop Productivity within Sustainable Environments," Sustainability, MDPI, vol. 11(5), pages 1-19, March.
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    Cited by:

    1. Nuraly Akimbekov & Xiaohui Qiao & Ilya Digel & Gulzhamal Abdieva & Perizat Ualieva & Azhar Zhubanova, 2020. "The Effect of Leonardite-Derived Amendments on Soil Microbiome Structure and Potato Yield," Agriculture, MDPI, vol. 10(5), pages 1-17, May.
    2. Lucy Reed & Bernard R. Glick, 2023. "The Recent Use of Plant-Growth-Promoting Bacteria to Promote the Growth of Agricultural Food Crops," Agriculture, MDPI, vol. 13(5), pages 1-24, May.
    3. Wanda Wadas & Tomasz Dziugieł, 2020. "Quality of New Potatoes ( Solanum tuberosum L.) in Response to Plant Biostimulants Application," Agriculture, MDPI, vol. 10(7), pages 1-13, July.
    4. Krystyna Zarzyńska & Cezary Trawczyński & Milena Pietraszko, 2023. "Environmental and Agronomical Factors Limiting Differences in Potato Yielding between Organic and Conventional Production System," Agriculture, MDPI, vol. 13(4), pages 1-18, April.
    5. Koffi Djaman & Soum Sanogo & Komlan Koudahe & Samuel Allen & Aminou Saibou & Samuel Essah, 2021. "Characteristics of Organically Grown Compared to Conventionally Grown Potato and the Processed Products: A Review," Sustainability, MDPI, vol. 13(11), pages 1-26, June.
    6. Barbara Symanowicz & Rafał Toczko, 2023. "Brown Coal Waste in Agriculture and Environmental Protection: A Review," Sustainability, MDPI, vol. 15(18), pages 1-14, September.

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