Volume 16, Issue 3 (Journal of Soil and Plant Interactions 2025)
2025, 16(3): 1-21 |
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1- Soil and Water Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran , nourfg@yahoo.com
2- Department of Soil Science and Engineering, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
3- Ilam Agricultural Research Center, Agricultural Research, Education and Extension Organization (AREEO), Ilam, Iran
2- Department of Soil Science and Engineering, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
3- Ilam Agricultural Research Center, Agricultural Research, Education and Extension Organization (AREEO), Ilam, Iran
Abstract: (700 Views)
Background and Objective: Sulfur, as an essential nutrient, and selenium in low concentrations as a beneficial element, are important for increasing plant tolerance to environmental stresses. This study investigated the effects of sulfur and selenium application on the absorption of these elements and their interaction effects on the growth indices of canola.
Methods: The experiment was conducted in greenhouse conditions using a factorial design with three treatments and three replications. The treatments included elemental sulfur at two levels (zero and 20 mg kg-1, inoculated with Thiobacillus inoculum) and two sources of selenium fertilizer (sodium selenate and selenite) at three levels (zero, two, and four mg L-1) applied as foliar spray. The cultivated canola variety was Dalgan and grown for 5 months. The sulfur was in powder form which was added to the soil of the sulfur-containing treatments, along with Thiobacillus inoculum (with a population of 1×108 cells per mL) two weeks before planting. Foliar application of selenium was carried out at the beginning of stem elongation.
Results: Results showed that selenium concentration in the grain was higher than in the shoot (0.395 vs. 0.251 mg kg-1), but uptake in the shoot was higher than in the grain (2.52 vs. 1.2 μg pot-1). Sulfur application significantly increased shoot dry weight (by 34%) and seed weight (by 89%) compared to the non-sulfur treatment. Selenium application from the selenate source, compared to selenite, resulted in higher selenium uptake in the shoot (2.71 vs. 2.33 μg pot-1) and grain (1.39 vs. 1.01 μg pot-1).
Conclusion: In the non-stress conditions of this experiment, applying selenium did not significantly increase canola grain yield. When applied from a selenate source at a concentration of 4 g L-1, it did improve the concentration of selenium in the grain, making it suitable for grain enrichment purposes.
Methods: The experiment was conducted in greenhouse conditions using a factorial design with three treatments and three replications. The treatments included elemental sulfur at two levels (zero and 20 mg kg-1, inoculated with Thiobacillus inoculum) and two sources of selenium fertilizer (sodium selenate and selenite) at three levels (zero, two, and four mg L-1) applied as foliar spray. The cultivated canola variety was Dalgan and grown for 5 months. The sulfur was in powder form which was added to the soil of the sulfur-containing treatments, along with Thiobacillus inoculum (with a population of 1×108 cells per mL) two weeks before planting. Foliar application of selenium was carried out at the beginning of stem elongation.
Results: Results showed that selenium concentration in the grain was higher than in the shoot (0.395 vs. 0.251 mg kg-1), but uptake in the shoot was higher than in the grain (2.52 vs. 1.2 μg pot-1). Sulfur application significantly increased shoot dry weight (by 34%) and seed weight (by 89%) compared to the non-sulfur treatment. Selenium application from the selenate source, compared to selenite, resulted in higher selenium uptake in the shoot (2.71 vs. 2.33 μg pot-1) and grain (1.39 vs. 1.01 μg pot-1).
Conclusion: In the non-stress conditions of this experiment, applying selenium did not significantly increase canola grain yield. When applied from a selenate source at a concentration of 4 g L-1, it did improve the concentration of selenium in the grain, making it suitable for grain enrichment purposes.
Type of Study: Research |
Subject:
Availability of soil water and nutrients for plant
Received: 2025/02/28 | Accepted: 2025/07/15 | Published: 2025/09/22
Received: 2025/02/28 | Accepted: 2025/07/15 | Published: 2025/09/22
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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.
