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Rhizosphere Soil Quality of Different Cultivated and Wild Barley Genotypes as Evaluated Using Physical and Chemical Indicators

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Abstract

Rhizosphere properties would greatly depend on plants species/genotypes which might be used as criteria for screening of plants in terms of the effects on soil quality. This study was conducted to determine the effects of 41 barley genotypes from three groups of Hordeum vulgare, spontaneum and wild genotypes on the rhizosphere structural stability and quality indicators. The genotypes were planted in a research field for 8 months. Soil quality indicators including water and ethanol sorptivities (SW and SE), water repellency (R), soil oganic carbon (SOC), hot-water soluble carbohydrates (HWSC), and water-dispersible clay (WDC) were determined in the rhizosphere and bulk soils. All of the indicators changed in the rhizosphere in comparison with the bulk soil, and different genotypes showed diverse effects on these indicators. The R and SOC of the rhizosphere varied among the genotypes, and they were greater in the rhizosphere compared to bulk soil. However, there was no significant difference between the three groups in terms of water repellency. The WDC in the rhizosphere was significantly lower and its value was in the order: vulgare < spontaneum < wild. The rhizosphere of wild and spontaneum genotypes had lower SW and higher R (i.e., was more hydrophobic) than that of vulgare genotypes. Principal component analysis showed that wild and spontaneum groups mainly affected the soil water repellency; however, the effects of these genotypes on rhizosphere structural stability were variable. Vulgare group primarily increased the SOC and HWSC, and therefore resulted in better rhizosphere stability.

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Acknowledgements

We would like to thank Isfahan University of Technology for the financial support of the study. Special appreciation is extended to Dr. F. Hosseini, Dr. M. Barati, Dr. M. Khodaee, and Dr. M. Torkian of Isfahan University of Technology, Iran, for their sincere help with the soil sampling and statistical analysis, respectively. Our special thanks go to Prof. M.A. Hajabbasi of Department of Soil Science, College of Agriculture, Isfahan University of Technology for reviewing of the manuscript.

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Correspondence to Mohammad Reza Mosaddeghi.

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Hosseini, B., Mosaddeghi, M.R. & Majidi, M.M. Rhizosphere Soil Quality of Different Cultivated and Wild Barley Genotypes as Evaluated Using Physical and Chemical Indicators. J Soil Sci Plant Nutr 21, 2538–2550 (2021). https://doi.org/10.1007/s42729-021-00545-6

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  • DOI: https://doi.org/10.1007/s42729-021-00545-6

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