Journal of Soil and Plant Interactions
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1- University of Maragheh , sm_ka80@yahoo.com
2- University of Maragheh
2- University of Maragheh
Abstract: (20 Views)
Background and Objective: Soil salinity disrupts plant growth by causing osmotic and oxidative stress. This study aimed to investigate the effect of compost modified by the Fenton process—an advanced oxidation method that enhances organic matter bioavailability—on the defense mechanisms of rosemary against oxidative stress.
Methods: The experiment was conducted as a factorial in a completely randomized design with three replications. Salinity levels were 0, 4, and 8 dS/m. Four compost treatments were used: control (no compost), ordinary compost (100% sheep manure), mixed compost (75% sheep manure + 25% raw sawdust), and Fenton‑modified compost (75% sheep manure + 25% sawdust treated by the Fenton process). At the end of the experiment, various physiological and biochemical traits were measured – including antioxidant enzyme activities, hydrogen peroxide concentration, malondialdehyde concentration, proline content, electrolyte leakage, relative leaf water content, as well as fresh and dry weights of rosemary.
Results: Although all compost types improved rosemary performance under saline conditions, Fenton compost was the most effective treatment at all salinity levels, especially at 8 dS/m. Compared to the no‑compost treatment, Fenton compost increased the activity of antioxidant enzymes: catalase (3.7‑fold), ascorbate peroxidase (2.28‑fold), guaiacol peroxidase (3.8‑fold), and peroxidase (4.11‑fold). Proline accumulation increased by 44.5%, which led to a 16.4% increase in relative leaf water content. Fenton compost also reduced hydrogen peroxide by 31%, electrolyte leakage by 36%, and malondialdehyde by 35%. Dry yield of rosemary under Fenton compost was 3.14 times higher than the no‑compost treatment and 1.75 times higher than ordinary compost.
Conclusion: It appears that Fenton‑modified compost, by activating the plant’s antioxidant defense system, can reduce the negative effects of salinity on rosemary under the conditions of this study. However, further field studies are needed to confirm its broader application.
Methods: The experiment was conducted as a factorial in a completely randomized design with three replications. Salinity levels were 0, 4, and 8 dS/m. Four compost treatments were used: control (no compost), ordinary compost (100% sheep manure), mixed compost (75% sheep manure + 25% raw sawdust), and Fenton‑modified compost (75% sheep manure + 25% sawdust treated by the Fenton process). At the end of the experiment, various physiological and biochemical traits were measured – including antioxidant enzyme activities, hydrogen peroxide concentration, malondialdehyde concentration, proline content, electrolyte leakage, relative leaf water content, as well as fresh and dry weights of rosemary.
Results: Although all compost types improved rosemary performance under saline conditions, Fenton compost was the most effective treatment at all salinity levels, especially at 8 dS/m. Compared to the no‑compost treatment, Fenton compost increased the activity of antioxidant enzymes: catalase (3.7‑fold), ascorbate peroxidase (2.28‑fold), guaiacol peroxidase (3.8‑fold), and peroxidase (4.11‑fold). Proline accumulation increased by 44.5%, which led to a 16.4% increase in relative leaf water content. Fenton compost also reduced hydrogen peroxide by 31%, electrolyte leakage by 36%, and malondialdehyde by 35%. Dry yield of rosemary under Fenton compost was 3.14 times higher than the no‑compost treatment and 1.75 times higher than ordinary compost.
Conclusion: It appears that Fenton‑modified compost, by activating the plant’s antioxidant defense system, can reduce the negative effects of salinity on rosemary under the conditions of this study. However, further field studies are needed to confirm its broader application.
Type of Study: Research |
Subject:
Plant growth under stressful conditions
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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.
