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Soil Organic Matter Characteristics as Affected by Tillage Management
Abstract
Soil organic matter (SOM) is of primary importance for maintaining soil productivity, and agricultural management practices may significantly influence SOM chemical properties. However, how SOM chemical characteristics change with agricultural practices is poorly understood. Therefore, in this study, we evaluated the impacts of tillage (conventional vs. conservation) management on the structural and compositional characteristics of SOM using cross-polarization magic-angle-spinning (CPMAS) and total sideband suppression (TOSS) solid-state 13C nuclear magnetic resonance (NMR) and diffuse reflectance Fourier transform infrared (DRIFT) spectroscopy. We characterized both physically and chemically isolated SOM fractions from a Norfolk soil (fine-loamy, siliceous, thermic Typic Kandiudults) under long-term tillage management (20 yr). The solid-state 13C NMR results indicated that humic acid (HA) from conventional tillage (CT, 0–5 cm) was less aliphatic and more aromatic than HA from conservation tillage (CnT). The aliphatic C content decreased with increasing depth (0–15 cm) for both CT and CnT treatments. The reverse trend was true for aromatic C content. Based on reactive/recalcitrant (O/R) peak ratio comparisons, HA was more reactive in the top soil (0–5 cm) under CnT than CT. Both soil organic C (SOC) and light fraction (LF) material were higher in the 0- to 5-cm soil of CnT than CT treatment. Our results show that long-term tillage management can significantly change the characteristics of both physical and chemical fractions of SOM.
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Citations
Cited by
Effects of agricultural management on soil organic matter and carbon transformation - a review
Liu, X., Herbert, S. J., Hashemi, A. M., Zhang, X., & Ding, G. (2006) · Plant, Soil and Environment · doi:10.17221/3544-pse · Cited by 377
Self-citationSoil organic carbon sequestration and agricultural greenhouse gas emissions in the southeastern USA
FRANZLUEBBERS, A. (2005) · Soil and Tillage Research · doi:10.1016/j.still.2005.02.012 · Cited by 306
Comparison of Labile Soil Organic Matter Fractionation Techniques
McLauchlan, K. K., & Hobbie, S. E. (2004) · Soil Science Society of America Journal · doi:10.2136/sssaj2004.1616 · Cited by 295
Maltas, A., Kebli, H., Oberholzer, H. R., Weisskopf, P., & Sinaj, S. (2018) · Land Degradation & Development · doi:10.1002/ldr.2913 · Cited by 179
Violante, A., Gaudio, S. D., Pigna, M., Ricciardella, M., & Banerjee, D. (2007) · Environmental Science & Technology · doi:10.1021/es070382+ · Cited by 131
Metadata
- Authors
- Ding, G., Novak, J. M., Amarasiriwardena, D. D., Hunt, P. G., & Xing, B.
- Venue
- Soil Science Society of America Journal
- Publisher
- Wiley
- Published
- 2002-01-01
- Volume
- 66
- Issue
- 2
- Pages
- 421-421
- ISSN
- 0361-5995 (ISSN-L)
- OpenAlex
- W2051050814
- Cited by
- 207
- References
- 0
- FWCI
- 17.56
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ding, G., Novak, J. M., Amarasiriwardena, D. D., Hunt, P. G., & Xing, B. (2002). Soil Organic Matter Characteristics as Affected by Tillage Management. Soil Science Society of America Journal. https://doi.org/10.2136/sssaj2002.0421
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