Volume 16, Issue 1 (Journal of Soil and Plant Interactions 2025)
2025, 16(1): 1-18 |
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Department of Soil Science and Engineering, Faculty of Agriculture, Shahrekord University, Iran
Abstract: (1090 Views)
Background and Objective: The depletion of soil organic matter coupled with environmental contamination resulting from the excessive application of chemical fertilizers has, in recent years, amplified interest in biofertilizers within the framework of sustainable soil management. Soil health and biological performance constitute among the most critical components of sustainable management in densely planted orchard systems. This study aimed to evaluate the efficacy of plant growth-promoting bacteria (PGPB) in enhancing the growth of almond (Prunus dulcis) cuttings under greenhouse conditions.
Methods: A randomized complete block design was employed, with ten treatments: inoculation with (T1: inoculation with Paenibacillus sp. bacteria; T2: inoculation with Paenibacillus tundrae; T3: inoculation with Pseudomonas fluorescens; T4: inoculation with Pseudomonas baetica; T5: inoculation with Pseudomonas monteilii; T6: inoculation with Azotobacter chroococcum; T7: inoculation with all bacterial isolates T1 to T6; T8: inoculation with all bacterial isolates T1 to T6 + 50% conventionally used chemical fertilizer; T9: application of 100% conventionally used chemical fertilizer and T10: control without bacterial inoculation). Plant growth indices and nutrient concentrations were assessed.
Results: The findings indicated that inoculation with P. tundrae (T2) increased leaf fresh weight by 34%, P. fluorescens (T3) boosted stem fresh weight by 33%, and a combination of all effective strains (T7) enhanced seedling height by 38% compared to the control. Moreover, P. monteilii (T5) significantly increased the number of leaves per seedling by 116%.
Conclusion: Overall, the study demonstrates the potential of the investigated PGPB, particularly P. tundrae, P. fluorescens, and P. monteilii are the most effective bacteria isolated from the almond rhizosphere regarding its ability to stimulate and enhance plant growth, suggesting its potential use in the formulation of biofertilizers.
Methods: A randomized complete block design was employed, with ten treatments: inoculation with (T1: inoculation with Paenibacillus sp. bacteria; T2: inoculation with Paenibacillus tundrae; T3: inoculation with Pseudomonas fluorescens; T4: inoculation with Pseudomonas baetica; T5: inoculation with Pseudomonas monteilii; T6: inoculation with Azotobacter chroococcum; T7: inoculation with all bacterial isolates T1 to T6; T8: inoculation with all bacterial isolates T1 to T6 + 50% conventionally used chemical fertilizer; T9: application of 100% conventionally used chemical fertilizer and T10: control without bacterial inoculation). Plant growth indices and nutrient concentrations were assessed.
Results: The findings indicated that inoculation with P. tundrae (T2) increased leaf fresh weight by 34%, P. fluorescens (T3) boosted stem fresh weight by 33%, and a combination of all effective strains (T7) enhanced seedling height by 38% compared to the control. Moreover, P. monteilii (T5) significantly increased the number of leaves per seedling by 116%.
Conclusion: Overall, the study demonstrates the potential of the investigated PGPB, particularly P. tundrae, P. fluorescens, and P. monteilii are the most effective bacteria isolated from the almond rhizosphere regarding its ability to stimulate and enhance plant growth, suggesting its potential use in the formulation of biofertilizers.
Type of Study: Research |
Subject:
Plant growth promoting microrganisms in the rhizosphere
Received: 2024/12/14 | Accepted: 2025/03/1 | Published: 2024/03/29
Received: 2024/12/14 | Accepted: 2025/03/1 | Published: 2024/03/29
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Journal of Soil and Plant Interactions by http://jspi.iut.ac.ir is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.
This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.
