Organic Matter and Water Stability of Field Aggregates Affected by Tillage in South Dakota
| Autor: | Sara F. Wright, TheCan Caesar, Kristine A. Nichols, James A. Rice, Michael Ellsbury, Thomas E. Schumacher, Gabriela Chilom, Joseph L. Pikul, Anna Eynard, Jane M. F. Johnson |
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| Rok vydání: | 2009 |
| Předmět: |
2. Zero hunger
Total organic carbon chemistry.chemical_classification biology Soil organic matter 0207 environmental engineering Soil Science Soil science 04 agricultural and veterinary sciences 02 engineering and technology 15. Life on land Glomalin Tillage Chisel Animal science chemistry 040103 agronomy & agriculture biology.protein Humin 0401 agriculture forestry and fisheries Humic acid Organic matter 020701 environmental engineering |
| Zdroj: | Soil Science Society of America Journal. 73:197-206 |
| ISSN: | 1435-0661 0361-5995 |
| DOI: | 10.2136/sssaj2007.0184 |
| Popis: | Tillage has been associated with soil organic matter (SOM) decline. A case study of two adjacent farms was conducted in eastern South Dakota. One farm used no-till (NT) and the other used chisel tillage (CT). We hypothesized that soil under NT, compared with tillage, would have both greater quantity and greater quality of SOM and that this improved SOM condition would result in increased water stable aggregation (WSA). A rotary sieve was used to sort dry field aggregates into six size groups: 19 mm. Water stable aggregation, soil organic C (SOC), N, glomalin, and basidiomycete fungi were measured. Fine particulate soil organic matter (fPOM, 0.5-0.053 mm) and coarse particulate organic matter (2.0-0.5 mm) were isolated by sieving. Quantitative solid-state 13 C nuclear magnetic resonance was used to determine C type in humic acid, humin, and whole soil. The fPOM/SOM ratio was greatest in |
| Databáze: | OpenAIRE |
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