Zahra Javanmrd1 
, Afsaneh Alinejadian-Bidabadi *2 , Amir Lakzian3 , Omidali Akbarpour4 , Keanoush Hamidian5
, Afsaneh Alinejadian-Bidabadi *2 , Amir Lakzian3 , Omidali Akbarpour4 , Keanoush Hamidian5
1- Soil Science Department, Faculty of Agriculture, Lorestan University, Iran
2- Soil Science Department, Faculty of Agriculture, Lorestan University, Iran ,alinezhadian.a@lu.ac.ir
3- Soil Science Department, Faculty of Agriculture, Ferdowsi University of Mashhad, Iran
4- Agronomy and Plant Breeding Department, Faculty of Agriculture, Lorestan University, Iran
5- Agricultural Jihad Organization of Lorestan, Khorramabad, Iran
2- Soil Science Department, Faculty of Agriculture, Lorestan University, Iran ,
3- Soil Science Department, Faculty of Agriculture, Ferdowsi University of Mashhad, Iran
4- Agronomy and Plant Breeding Department, Faculty of Agriculture, Lorestan University, Iran
5- Agricultural Jihad Organization of Lorestan, Khorramabad, Iran
Abstract: (10 Views)
Background and Objectives: Soil quality degradation is a major challenge to sustainable land management. This study aimed to investigate the effects of biochar type, walnut shell (Wa) and pomegranate peel (Po), and pyrolysis temperature (400, 500, and 600°C) on soil quality. The hypothesis was that biochar type and pyrolysis temperature would independently and interactively affect soil quality.
Methods: The experiment was conducted in a randomized complete block design with seven treatments and three replications at the research farm of the Faculty of Agriculture, Lorestan University. The Nemrow Quality Index (NQI) and Integrated Quality Index (IQI) were calculated based on the Total Data Set (TDS) and Minimum Data Set (MDS).
Results: Increasing pyrolysis temperature significantly affected most soil properties (p<0.01). With increasing temperature, bulk density (BD) and percentage of aggregate destruction (PAD) decreased, whereas porosity, mean weight diameter (MWD), whole soil stability index (WSSI), and normalized stability index (NSI) increased. The highest MWD and WSSI were observed in Wa600, while the highest porosity and field capacity occurred in Po600. The highest organic carbon (OC) was recorded in Po600, whereas the highest phosphorus and potassium contents were obtained in Wa600. Microbial biomass carbon (MBC), particulate organic carbon (POC), urease, and alkaline phosphatase activities increased, while metabolic quotient (QCO₂) and acid phosphatase activity decreased (p<0.01). The highest IQI-TDS (0.722) was observed in Wa600, whereas the highest IQI-MDS (0.695) occurred in Po400.
Conclusion: Biochar, particularly at 600°C, improved soil quality. The superior performance of Wa600 in IQI-TDS and Po400 in IQI-MDS highlights the importance of selecting appropriate feedstock and pyrolysis temperature for improving soil quality.
Methods: The experiment was conducted in a randomized complete block design with seven treatments and three replications at the research farm of the Faculty of Agriculture, Lorestan University. The Nemrow Quality Index (NQI) and Integrated Quality Index (IQI) were calculated based on the Total Data Set (TDS) and Minimum Data Set (MDS).
Results: Increasing pyrolysis temperature significantly affected most soil properties (p<0.01). With increasing temperature, bulk density (BD) and percentage of aggregate destruction (PAD) decreased, whereas porosity, mean weight diameter (MWD), whole soil stability index (WSSI), and normalized stability index (NSI) increased. The highest MWD and WSSI were observed in Wa600, while the highest porosity and field capacity occurred in Po600. The highest organic carbon (OC) was recorded in Po600, whereas the highest phosphorus and potassium contents were obtained in Wa600. Microbial biomass carbon (MBC), particulate organic carbon (POC), urease, and alkaline phosphatase activities increased, while metabolic quotient (QCO₂) and acid phosphatase activity decreased (p<0.01). The highest IQI-TDS (0.722) was observed in Wa600, whereas the highest IQI-MDS (0.695) occurred in Po400.
Conclusion: Biochar, particularly at 600°C, improved soil quality. The superior performance of Wa600 in IQI-TDS and Po400 in IQI-MDS highlights the importance of selecting appropriate feedstock and pyrolysis temperature for improving soil quality.
Keywords: Aggregate stability, Pomegranate peel, Walnut shell, Minimum data set, Nemrow quality index, Microbial biomass carbon.
Type of Article: Research |
Subject:
Soil health association with soil-plant interactions
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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.
