Volume 17, Issue 2 (Journal of Soil and Plant Interactions 2026)
2026, 17(2): 41-58 |
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1- Department of Irrigation and Drainage Research, Khuzestan Sugarcane Research and Training Institute, Ahvaz, Iran , ez1357h@yahoo.com
2- Department of Agronomy Research, Khuzestan Sugarcane Research and Training Institute, Ahvaz, Iran
3- Department of Irrigation and Drainage Research, Khuzestan Sugarcane Research and Training Institute, Ahvaz, Iran
4- Deputy of Agricultural Monitoring and Research, Khuzestan Sugarcane Research and Training Institute, Ahvaz, Iran
2- Department of Agronomy Research, Khuzestan Sugarcane Research and Training Institute, Ahvaz, Iran
3- Department of Irrigation and Drainage Research, Khuzestan Sugarcane Research and Training Institute, Ahvaz, Iran
4- Deputy of Agricultural Monitoring and Research, Khuzestan Sugarcane Research and Training Institute, Ahvaz, Iran
Abstract: (298 Views)
Background and Objective: The application of soil organic amendments, such as biochar and compost, can influence plant evapotranspiration and water productivity. The present study aimed to investigate the effects of biochar and compost application on yield, evapotranspiration, crop coefficient, and water productivity of sugarcane (Saccharum officinarum L. CP57-614 cultivar).
Methods: This experiment was conducted at Amirkabir Sugarcane Agro-Industry, Khuzestan, using drainage-type volumetric lysimeters in a completely randomized design with three treatments: 1) control, 2) application of sugarcane residue compost at 30 t ha⁻¹, and 3) application of sugarcane residue biochar at 10 t ha⁻¹, each with three replications. In one lysimeter, grass was grown as the reference plant, and sugarcane was cultivated in nine other lysimeters. Daily actual evapotranspiration was estimated using the water balance method in the lysimeters, while the reference evapotranspiration was calculated using grass, and the crop coefficients (Kc) were determined for different months of the growing period.
Results: Results indicated that the application of biochar and compost reduced the Kc values during different months compared with the control treatment. On average, biochar and compost reduced the Kc of sugarcane (CP57-614 cultivar) by 7.2 and 6.6%, respectively, compared with the control. Moreover, biochar and compost application significantly increased cane yield by 19.3 and 12.3%, sugar yield by 21.4 and 12.9%, irrigation water productivity for cane yield by 24.7 and 17.6%, respectively, and for sugar yield by 24.0 and 16.0%, respectively. Water productivity was also significantly improved by 25.7 and 17.3% for cane production, and by 27.2 and 18.2% for sugar production, under biochar and compost treatments, respectively. The increase in water productivity was primarily due to increased cane and sugar yield and secondarily due to reduced evapotranspiration.
Conclusion: Overall, the findings revealed that the application of organic soil amendments such as biochar and compost can effectively enhance irrigation water productivity and water productivity in sugarcane (CP57-614 cultivar).
Methods: This experiment was conducted at Amirkabir Sugarcane Agro-Industry, Khuzestan, using drainage-type volumetric lysimeters in a completely randomized design with three treatments: 1) control, 2) application of sugarcane residue compost at 30 t ha⁻¹, and 3) application of sugarcane residue biochar at 10 t ha⁻¹, each with three replications. In one lysimeter, grass was grown as the reference plant, and sugarcane was cultivated in nine other lysimeters. Daily actual evapotranspiration was estimated using the water balance method in the lysimeters, while the reference evapotranspiration was calculated using grass, and the crop coefficients (Kc) were determined for different months of the growing period.
Results: Results indicated that the application of biochar and compost reduced the Kc values during different months compared with the control treatment. On average, biochar and compost reduced the Kc of sugarcane (CP57-614 cultivar) by 7.2 and 6.6%, respectively, compared with the control. Moreover, biochar and compost application significantly increased cane yield by 19.3 and 12.3%, sugar yield by 21.4 and 12.9%, irrigation water productivity for cane yield by 24.7 and 17.6%, respectively, and for sugar yield by 24.0 and 16.0%, respectively. Water productivity was also significantly improved by 25.7 and 17.3% for cane production, and by 27.2 and 18.2% for sugar production, under biochar and compost treatments, respectively. The increase in water productivity was primarily due to increased cane and sugar yield and secondarily due to reduced evapotranspiration.
Conclusion: Overall, the findings revealed that the application of organic soil amendments such as biochar and compost can effectively enhance irrigation water productivity and water productivity in sugarcane (CP57-614 cultivar).
Keywords: Organic amendment, Sugarcane residues, Evapotranspiration, Soil moisture, Crop coefficient.
Type of Article: Research |
Subject:
Plant water relations
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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.
