Understanding the Priming Effect and the Routes and Stocks of C in Incubated Soil with Residue Inputs
The priming effect is a strong short-term change of organic matter decomposition that can accelerate or slow residue decomposition, and release or immobilize a large amount of carbon (C) and nitrogen (N) in soil. Our goal here was to (i) monitor the influence of residue additions in stocks of C and...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Horticulturae |
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| Online Access: | https://www.mdpi.com/2311-7524/8/2/154 |
| _version_ | 1797479608995545088 |
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| author | Risely Ferraz-Almeida |
| author_facet | Risely Ferraz-Almeida |
| author_sort | Risely Ferraz-Almeida |
| collection | DOAJ |
| description | The priming effect is a strong short-term change of organic matter decomposition that can accelerate or slow residue decomposition, and release or immobilize a large amount of carbon (C) and nitrogen (N) in soil. Our goal here was to (i) monitor the influence of residue additions in stocks of C and N in residues and soil (ii) and identify the main routes of C stabilization and the priming effect in soil. An incubation study was run with residue additions of high C:N (brachiaria and sugarcane) and low C:N (soybean) in soil. CO<sub>2</sub> emissions, stocks of C (humic substance; labile C and C mic) and N (soil and residues) were monitored for 50 days, and the priming effect and route of C were calculated. Results showed that after incubation the final stocks of humin increased (31%), while there were reductions of humic (54%) and fulvic acids (42%). The stocks of soil total C and N were constant, while the residue C was decreased. The residues with high C:N immobilized N, while there was a decrease of N in residues with low C:N. There was a positive priming effect and a C stabilization route concentrated from C mic to humic substances with the addition of low C:N, while inputs of high C:N diversified the C stabilization routes from C mic or labile C to humic substances. The C routes were intense because the study was run in control conditions with a loam soil and adequate conditions of water, oxygen, and temperature. |
| first_indexed | 2024-03-09T21:48:14Z |
| format | Article |
| id | doaj.art-ad525f39da4b41ae952151aa98b4d322 |
| institution | Directory Open Access Journal |
| issn | 2311-7524 |
| language | English |
| last_indexed | 2024-03-09T21:48:14Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Horticulturae |
| spelling | doaj.art-ad525f39da4b41ae952151aa98b4d3222023-11-23T20:12:30ZengMDPI AGHorticulturae2311-75242022-02-018215410.3390/horticulturae8020154Understanding the Priming Effect and the Routes and Stocks of C in Incubated Soil with Residue InputsRisely Ferraz-Almeida0Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba 13418-900, SP, BrazilThe priming effect is a strong short-term change of organic matter decomposition that can accelerate or slow residue decomposition, and release or immobilize a large amount of carbon (C) and nitrogen (N) in soil. Our goal here was to (i) monitor the influence of residue additions in stocks of C and N in residues and soil (ii) and identify the main routes of C stabilization and the priming effect in soil. An incubation study was run with residue additions of high C:N (brachiaria and sugarcane) and low C:N (soybean) in soil. CO<sub>2</sub> emissions, stocks of C (humic substance; labile C and C mic) and N (soil and residues) were monitored for 50 days, and the priming effect and route of C were calculated. Results showed that after incubation the final stocks of humin increased (31%), while there were reductions of humic (54%) and fulvic acids (42%). The stocks of soil total C and N were constant, while the residue C was decreased. The residues with high C:N immobilized N, while there was a decrease of N in residues with low C:N. There was a positive priming effect and a C stabilization route concentrated from C mic to humic substances with the addition of low C:N, while inputs of high C:N diversified the C stabilization routes from C mic or labile C to humic substances. The C routes were intense because the study was run in control conditions with a loam soil and adequate conditions of water, oxygen, and temperature.https://www.mdpi.com/2311-7524/8/2/154sugarcanesoybeanCO<sub>2</sub> emissionC:N ratioC dynamics |
| spellingShingle | Risely Ferraz-Almeida Understanding the Priming Effect and the Routes and Stocks of C in Incubated Soil with Residue Inputs Horticulturae sugarcane soybean CO<sub>2</sub> emission C:N ratio C dynamics |
| title | Understanding the Priming Effect and the Routes and Stocks of C in Incubated Soil with Residue Inputs |
| title_full | Understanding the Priming Effect and the Routes and Stocks of C in Incubated Soil with Residue Inputs |
| title_fullStr | Understanding the Priming Effect and the Routes and Stocks of C in Incubated Soil with Residue Inputs |
| title_full_unstemmed | Understanding the Priming Effect and the Routes and Stocks of C in Incubated Soil with Residue Inputs |
| title_short | Understanding the Priming Effect and the Routes and Stocks of C in Incubated Soil with Residue Inputs |
| title_sort | understanding the priming effect and the routes and stocks of c in incubated soil with residue inputs |
| topic | sugarcane soybean CO<sub>2</sub> emission C:N ratio C dynamics |
| url | https://www.mdpi.com/2311-7524/8/2/154 |
| work_keys_str_mv | AT riselyferrazalmeida understandingtheprimingeffectandtheroutesandstocksofcinincubatedsoilwithresidueinputs |