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Struvite/biochar composites as recovered phosphorus fertilizers from domestic sewage sludge increased biomass and nutrient uptake of maize.
- Source :
-
Journal of Plant Nutrition . 2024, Vol. 47 Issue 3, p433-447. 15p. - Publication Year :
- 2024
-
Abstract
- Global mines of phosphates, which are a main source for the manufacturing of phosphorus (P)-fertilizers, are running out. To solve this problem, the recovery of P by struvite (NH4MgPO4·6H2O) precipitation as a slow-release P-fertilizer (SRPF) has been a growing interest of recent research. This study aimed to assess the effect of struvite/biochar composites as SRPFs on the growth yield, nutrient uptake responses of maize in two soils (with different amounts of calcium carbonate equivalent), and calculation of P use efficiency indices. The greenhouse experiment was designed with six P fertilizer treatments, i.e. triple super-phosphate (TSP), four types of struvite/biochar composites (S/G0, S/G25, S/G50, and S/G75), and control (no P fertilizer applied) with three replication. Results showed that struvite/biochar composite with high amounts of biochar i.e. S/G75 is the best treatment for improving biomass's of maize (63 and 39%), plant height (25 and 16%), SPAD value (31 and 26%) compared to control and TSP in soil-1 with the low amount of calcium carbonate equivalent, respectively. Applying S/G75, S/G50, S/G25, and S/G0 composites, and TSP concentration of P increased by 2, 1.85, 1.76, 1.73, and 1.34 times over control in soils, respectively. Using of composites significantly influenced P uptake, and recovery efficiency of P by plants, while the S/G75 composite was showed superior to other P-fertilizers. Overall, the struvite/biochar composites showed great potential as efficient SRPF for enhanced maize growth, and the presence of biochar in struvite composite with high amount (S/G75) increased the efficiency of fertilization in calcareous soil. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SEWAGE
*PHOSPHATE fertilizers
*SEWAGE sludge
*BIOCHAR
*NUTRIENT uptake
*CORN
Subjects
Details
- Language :
- English
- ISSN :
- 01904167
- Volume :
- 47
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Journal of Plant Nutrition
- Publication Type :
- Academic Journal
- Accession number :
- 174546478
- Full Text :
- https://doi.org/10.1080/01904167.2023.2278660