Volume 16, Issue 1 (Journal of Soil and Plant Interactions 2025)
2025, 16(1): 71-87 |
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Department of Soil Science, College of Agriculture, Vali-e-Asr University of Rafsanjan, Rafsanjan
Abstract: (658 Views)
Background and Objective: Plant growth-promoting rhizobacteria (PGPR) are effective in improving plant nutrition and yield through various strategies. The aim of this study was to investigate the effect of inoculation of PGPR on phosphorus uptake and quantitative as well as qualitative yield of two sugarcane varieties (CP73-21 and CP69-1062) during the second ratoon.
Methods: Two separate experiments were conducted in two sugarcane fields during second ratoon at De'bal Khoza'i Agro-Industry, Khuzestan. Each experiment was conducted in a randomized complete block design with three treatments of control (C), inoculation of Enterobacter cloacae R33 (B33) and inoculation of bacterial consortium (three strains of Enterobacter cloacae R33, Staphylococcus hominis 9E and Brevundimonas sp.) (Bmix) and in three replications. The PGPR treatments were applied by spraying to soil. Three months after applying the treatments, soil microbial biomass carbon and available phosphorus, shoot phosphorus concentration, and shoot dry weight were measured. Plant quantitative and qualitative yields were also measured at the end of the plant growth period.
Results: In both studied fields, the application of PGPR treatments increased soil microbial biomass carbon, soil available phosphorus, and phosphorus uptake in the shoot of sugarcane. The results revealed that the B33 treatment was more effective than the Bmix treatment in improving phosphorus availability in the soil, increasing phosphorus uptake in the shoot, and increasing the quantitative and qualitative yield of sugarcane. In the B33 treatment, the yields of second ratoon sugarcane of the CP73-21 and CP69-1062 varieties were 9.3 and 10.5 percent, respectively, and the sugar yields were 12.3 and 12.6 percent, respectively, higher than the control treatment.
Conclusion: In general, the results of this study showed that inoculation of Enterobacter cloacae R33 bacteria can be considered as one of the effective strategies in improving phosphorus nutrition and sugarcane yield in ratoon fields.
Methods: Two separate experiments were conducted in two sugarcane fields during second ratoon at De'bal Khoza'i Agro-Industry, Khuzestan. Each experiment was conducted in a randomized complete block design with three treatments of control (C), inoculation of Enterobacter cloacae R33 (B33) and inoculation of bacterial consortium (three strains of Enterobacter cloacae R33, Staphylococcus hominis 9E and Brevundimonas sp.) (Bmix) and in three replications. The PGPR treatments were applied by spraying to soil. Three months after applying the treatments, soil microbial biomass carbon and available phosphorus, shoot phosphorus concentration, and shoot dry weight were measured. Plant quantitative and qualitative yields were also measured at the end of the plant growth period.
Results: In both studied fields, the application of PGPR treatments increased soil microbial biomass carbon, soil available phosphorus, and phosphorus uptake in the shoot of sugarcane. The results revealed that the B33 treatment was more effective than the Bmix treatment in improving phosphorus availability in the soil, increasing phosphorus uptake in the shoot, and increasing the quantitative and qualitative yield of sugarcane. In the B33 treatment, the yields of second ratoon sugarcane of the CP73-21 and CP69-1062 varieties were 9.3 and 10.5 percent, respectively, and the sugar yields were 12.3 and 12.6 percent, respectively, higher than the control treatment.
Conclusion: In general, the results of this study showed that inoculation of Enterobacter cloacae R33 bacteria can be considered as one of the effective strategies in improving phosphorus nutrition and sugarcane yield in ratoon fields.
Keywords: Phosphorus solubilizing bacteria, Phosphorus availability, Microbial activity, Sugar Yield, Sugarcane.
Type of Study: Research |
Subject:
Availability of soil water and nutrients for plant
Received: 2024/12/23 | Accepted: 2025/05/26 | Published: 2024/03/29
Received: 2024/12/23 | Accepted: 2025/05/26 | Published: 2024/03/29
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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.
