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Physiological Responses of Plant Growth Promoting Rhizobacteria, Biochar and Chemical Fertilizer Under Salinity Stress

A. Bano

Published 2018 in University of Wah journal of science and technology

ABSTRACT

This research work is conducted to evaluate the physiological responses of phosphate solubilizing rhizobacteria (Pseudomonas sp.), biochar and N-fertilizer under salt stress. Biochar and fertilizer are mixed in soil (5:1) while Pseudomonas sp. is applied as seed soaking at 106 cells/ml prior to seed sowing. Salt stress with 150mM NaCl is applied for three days (3d) at three (3) leaf stage. The obtained results depicted significant effect of Pseudomonas sp. on root fresh weight and leaf area both under unstressed and salt stress conditions followed by biochar. Treatment with biochar and Pseudomonas sp. resulted in increased root fresh weight, leaf area, chlorophyll fluorescence and decreased osmotic potential by 60% particularly under salt stress. On the contrary, fertilizer treatment is found to be ineffective on seed germination (results not presented here), however increased chlorophyll content by 77%. Under salt stress, fertilizer treatment increased the osmotic potential of leaves. The combined treatments of fertilizer with Pseudomonas and biochar significantly increased root fresh weight, chlorophyll content and leaf area under salt stress. It is inferred that combined application of biochar and Pseudomonas can augment the effects of N-fertilizer on plants.

PUBLICATION RECORD

  • Publication year

    2018

  • Venue

    University of Wah journal of science and technology

  • Publication date

    2018-05-23

  • Fields of study

    Agricultural and Food Sciences, Chemistry, Environmental Science

  • Identifiers
    DOI 10.56220/uwjst.v2i0.9
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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