Impact of continuous organic manuring on mechanisms and processes of the stabilisation of soil organic C under rice–wheat cropping system
T. J. Purakayastha![https://orcid.org/0000-0002-8669-3842](/media/client/orcid_16x16.png)
A Division of Soil Science and Agricultural Chemistry, Indian Agricultural Research Institute, New Delhi 110012, India.
B Division of Agronomy, Indian Agricultural Research Institute, New Delhi 110012, India.
C Center for Environment Science and Climate Resilient Agriculture, New Delhi 110012, India.
D Corresponding author. Email: tpurakayastha@gmail.com
Soil Research 58(1) 73-83 https://doi.org/10.1071/SR19014
Submitted: 22 January 2019 Accepted: 12 September 2019 Published: 22 October 2019
Abstract
Understanding the mechanism of soil organic carbon (SOC) stabilisation may help in developing management strategies for SOC storage. A long-term organically managed rice−wheat cropping system was used for SOC stabilisation study. Soil samples were collected from control, FYM (farmyard manure to rice and wheat), GM (green manure; Sesbania aculeata to rice and Leucaena leucocephala to wheat), GB (GM with biofertiliser; blue green algae to rice and Azotobacter sp. to wheat), GF (GM with FYM), GFB (GM with FYM and biofertiliser). Sodium hypochlorite (NaOCl)-resistant C correlated significantly with ammonium oxalate and dithionate extractable Fe, Al and Si in soil. The GFB showed the highest enrichment of SOC (32%) as well as NaOCl-resistant C (22%) at 0–15 cm soil depth. At higher soil depth, GM alone showed the highest enrichment of SOC (39% at 15–30 cm, 84% at 30–60 cm). The NaOCl-resistant C was higher in FYM and GFB treatments at 15–30 and 30–60 cm depths respectively. The proportion of NaOCl-resistant C to SOC increased down the profile and was highest (30–52%) in 30–60 cm soil depth. A multiple regression model developed between ammonium oxalate extractable Fe, Al and Si and SOC could well predict the stable SOC content. There was a substantial improvement in prediction when extractable Fe, Al and Si were combined together. Among the organic treatments, GFB showed the highest humification and aromaticity in humic acid with least polarity and more reduced form. The combination of all the organic sources (GFB) could be a promising nutrient management strategy for enhancing the stability of SOC in rice–wheat cropping systems of semiarid subtropical India.
Additional keywords: Al and Si, amorphous Fe, humic acid, NaOCl-resistant C.
References
Anderson JU (1961) An improved pretreatment for mineralogical analysis of samples containing organic matter. Clays and Clay Minerals 10, 380–388.| An improved pretreatment for mineralogical analysis of samples containing organic matter.Crossref | GoogleScholarGoogle Scholar |
Badis A, Ferradji FZ, Boucherit A, Fodil D, Boutoumi H (2009) Characterization and biodegradation of soil humic acids and preliminary identification of decolorizing actinomycetes at Mitidja plain soils (Algeria). African Journal of Microbiological Research 3, 997–1007.
Baglieri A, Vindrola D, Gennari M, Negre M (2014) Chemical and spectroscopic characterization of insoluble and soluble humic acid fractions at different pH values. Chemical and Biological Technologies in Agriculture 1, 9
| Chemical and spectroscopic characterization of insoluble and soluble humic acid fractions at different pH values.Crossref | GoogleScholarGoogle Scholar |
Baumann K, Marschner P, Smernik RJ, Baldock JA (2009) Residue chemistry and microbial community structure during decomposition of eucalypt, wheat and vetch residues. Soil Biology and Biochemistry 41, 1966–1975.
| Residue chemistry and microbial community structure during decomposition of eucalypt, wheat and vetch residues.Crossref | GoogleScholarGoogle Scholar |
Bayer C, Martin-Neto L, Mielniczuk J, Saab SC, Bagnato VS, Milori DMP (2002) Tillage and cropping system effects on soil humic acid characteristics as determined by electron spin resonance and fluorescence spectroscopies. Geoderma 105, 81–92.
| Tillage and cropping system effects on soil humic acid characteristics as determined by electron spin resonance and fluorescence spectroscopies.Crossref | GoogleScholarGoogle Scholar |
Bending GD, Turner MK (1999) Interaction of biochemical quality and particle size of crop residues and its effect on the microbial biomass and nitrogen dynamics following incorporation in soil. Biology and Fertility of Soils 29, 319–327.
| Interaction of biochemical quality and particle size of crop residues and its effect on the microbial biomass and nitrogen dynamics following incorporation in soil.Crossref | GoogleScholarGoogle Scholar |
Berg B (2000) Litter decomposition and organic matter turn over in northern forest soils. Forest Ecology and Management 133, 13–22.
| Litter decomposition and organic matter turn over in northern forest soils.Crossref | GoogleScholarGoogle Scholar |
Bhatia A, Pathak H, Jain N, Singh PK, Singh AK (2005) Global warming potential of manure amended soils under rice–wheat system in the Indo-Gangetic plains. Atmospheric Environment 39, 6976–6984.
| Global warming potential of manure amended soils under rice–wheat system in the Indo-Gangetic plains.Crossref | GoogleScholarGoogle Scholar |
Bhattacharyya R, Chandra S, Singh RD, Kundu S, Srivastva AK, Gupta HS (2007) Long-term farmyard manure application effects on properties of a silty clay loam soil under irrigated wheat–soybean rotation. Soil and Tillage Research 94, 386–396.
| Long-term farmyard manure application effects on properties of a silty clay loam soil under irrigated wheat–soybean rotation.Crossref | GoogleScholarGoogle Scholar |
Bhattacharyya R, Kundu S, Pandey SC, Singh KP, Gupta HS (2008) Tillage and irrigation effects on crop yields and soil properties under the rice–wheat system in the Indian Himalayas. Agricultural Water Management 95, 993–1002.
| Tillage and irrigation effects on crop yields and soil properties under the rice–wheat system in the Indian Himalayas.Crossref | GoogleScholarGoogle Scholar |
Bhattacharyya R, Kundu S, Srivastva AK, Gupta HS, Prakash V, Bhatt JC (2011) Long term fertilization effects on soil organic carbon pools in a sandy loam soil of the Indian sub-Himalayas. Plant and Soil 341, 109–124.
| Long term fertilization effects on soil organic carbon pools in a sandy loam soil of the Indian sub-Himalayas.Crossref | GoogleScholarGoogle Scholar |
Bol R, Bolger T, Cully R, Little D (2003) Recalcitrant soil organic materials mineralize more efficiently at higher temperatures. Journal of Plant Nutrition and Soil Science 166, 300–307.
| Recalcitrant soil organic materials mineralize more efficiently at higher temperatures.Crossref | GoogleScholarGoogle Scholar |
Brar BS, Singh KB, Dheri GS, Kumar B (2013) Carbon sequestration and soil carbon pools in a rice–wheat cropping system: Effect of long-term use of inorganic fertilizers and organic manure. Soil and Tillage Research 128, 30–36.
| Carbon sequestration and soil carbon pools in a rice–wheat cropping system: Effect of long-term use of inorganic fertilizers and organic manure.Crossref | GoogleScholarGoogle Scholar |
Canellas LP, Santos GDA, Rumjanek VM, Moraes AA, Guridi F (2001) Distribution of the organic matter and humic acid characteristic in soils with addition of residues of urban origin. Pesquisa Agropecuária Brasileira 36, 1529–1538.
| Distribution of the organic matter and humic acid characteristic in soils with addition of residues of urban origin.Crossref | GoogleScholarGoogle Scholar |
Cao Z, Wang Y, Jie Li, Zhang J, He N (2016) Soil organic carbon contents, aggregate stability, and humic acid composition in different alpine grasslands in Qinghai-Tibet Plateau. Journal of Mountain Science 13, 2015–2027.
| Soil organic carbon contents, aggregate stability, and humic acid composition in different alpine grasslands in Qinghai-Tibet Plateau.Crossref | GoogleScholarGoogle Scholar |
Chatterjee D, Datta SC, Manjaiah KM (2013) Clay carbon pools and their relationship with short-range order minerals: avenues to mitigate climate change. Current Science 105, 1404–1410.
Cheng C, Lehmann J, Thies JE, Burton SD, Engelhard MH (2006) Oxidation of black carbon by biotic and abiotic processes. Organic Geochemistry 37, 1477–1488.
| Oxidation of black carbon by biotic and abiotic processes.Crossref | GoogleScholarGoogle Scholar |
Das R, Purakayastha TJ, Das D, Ahmed N, Kumar R, Biswas S, Walia SS, Singh R, Shukla VK, Yadava MS, Ravisankar N, Datta SC (2019) Long-term fertilization and manuring with different organics alter stability of carbon in colloidal organo-mineral fraction in soils of varying clay mineralogy. Science of the Total Environment 684, 682–693.
| Long-term fertilization and manuring with different organics alter stability of carbon in colloidal organo-mineral fraction in soils of varying clay mineralogy.Crossref | GoogleScholarGoogle Scholar | 31163333PubMed |
Dexter AR, Richard G, Arrouays D, Czyż EA, Jolivet C, Duval O (2008) Complexed organic matter controls soil physical properties. Geoderma 144, 620–627.
| Complexed organic matter controls soil physical properties.Crossref | GoogleScholarGoogle Scholar |
Freixo AA, de A Machado PLO, dos Santos HP, Silva CA, de S Fadigas F (2002) Soil organic carbon and fractions of a Rhodic Ferralsol under the influence of tillage and crop rotation in southern Brazil. Soil and Tillage Research 64, 221–230.
| Soil organic carbon and fractions of a Rhodic Ferralsol under the influence of tillage and crop rotation in southern Brazil.Crossref | GoogleScholarGoogle Scholar |
Ghosh S, Wilson BR, Mandal B, Ghoshal SK, Growns I (2010) Changes in soil organic carbon pool in three long-term fertility experiments with different cropping systems, inorganic and organic soil amendments in the eastern cereal belt of India. Australian Journal of Soil Research 48, 413–420.
| Changes in soil organic carbon pool in three long-term fertility experiments with different cropping systems, inorganic and organic soil amendments in the eastern cereal belt of India.Crossref | GoogleScholarGoogle Scholar |
Ghosh S, Wilson B, Ghoshal S, Senapati N, Mandal B (2012) Organic amendments influence soil quality and carbon sequestration in the Indo-Gangetic plains of India. Agriculture, Ecosystems and Environment 156, 134–141.
| Organic amendments influence soil quality and carbon sequestration in the Indo-Gangetic plains of India.Crossref | GoogleScholarGoogle Scholar |
González Pérez M, Martin-Neto L, Saab SC, Novotny EH, Milori DMBP, Bagnato VS, Colnago LA, Melo WJ, Knicker H (2004) Characterization of humic acids from a Brazilian Oxisol under different tillage systems by EPR, 13C NMR, FTIR and fluorescence spectroscopy. Geoderma 118, 181–190.
| Characterization of humic acids from a Brazilian Oxisol under different tillage systems by EPR, 13C NMR, FTIR and fluorescence spectroscopy.Crossref | GoogleScholarGoogle Scholar |
González-Pérez M, Torrado PV, Colnago LA, Martin-Neto L, Otero XL, Milori DMBP, Gomes FH (2008) 13C NMR and FTIR spectroscopy characterization of humic acids in Spodosols under tropical rain forest in southeastern Brazil. Geoderma 146, 425–433.
| 13C NMR and FTIR spectroscopy characterization of humic acids in Spodosols under tropical rain forest in southeastern Brazil.Crossref | GoogleScholarGoogle Scholar |
Guggenberger G, Christensen BT, Zech W (1994) Land-use effects on the composition of organic matter in particle-size separates of soil: I. Lignin and carbohydrate signature. European Journal of Soil Science 45, 449–458.
| Land-use effects on the composition of organic matter in particle-size separates of soil: I. Lignin and carbohydrate signature.Crossref | GoogleScholarGoogle Scholar |
Haynes RJ (2000) Interactions between soil organic matter status, cropping history, method of quantification and sample pretreatment and their effects on measured aggregate stability. Biology and Fertility of Soils 30, 270–275.
| Interactions between soil organic matter status, cropping history, method of quantification and sample pretreatment and their effects on measured aggregate stability.Crossref | GoogleScholarGoogle Scholar |
Helal AA, Murad GA, Helal AA (2011) Characterization of different humic materials by various analytical techniques. Arabian Journal of Chemistry 4, 51–54.
| Characterization of different humic materials by various analytical techniques.Crossref | GoogleScholarGoogle Scholar |
Igwe CA, Akamigbo FOR, Mbagwu JSC (1995) Physical properties of soils of southeastern Nigeria and the role of some aggregating agents in their stability. Soil Science 160, 431–441.
| Physical properties of soils of southeastern Nigeria and the role of some aggregating agents in their stability.Crossref | GoogleScholarGoogle Scholar |
Inbar Y, Chen Y, Hadar Y (1989) Solid-state carbon-13 Nuclear Magnetic Resonance and infrared spectroscopy of composted organic matter. Soil Science Society of America Journal 53, 1695–1701.
| Solid-state carbon-13 Nuclear Magnetic Resonance and infrared spectroscopy of composted organic matter.Crossref | GoogleScholarGoogle Scholar |
Kaiser K, Guggenberger G (2000) The role of DOM sorption to mineral surfaces in the preservation of organic matter in soils. Organic Geochemistry 31, 711–725.
| The role of DOM sorption to mineral surfaces in the preservation of organic matter in soils.Crossref | GoogleScholarGoogle Scholar |
Kaiser K, Eusterhues K, Rumpel C, Guggenberger G, Kögel Knabner I (2002) Stabilization of organic matter by soil minerals – investigations of density and particle-size fractions from two acid forest soils. Journal of Plant Nutrition and Soil Science 165, 451–459.
| Stabilization of organic matter by soil minerals – investigations of density and particle-size fractions from two acid forest soils.Crossref | GoogleScholarGoogle Scholar |
Karlen DL, Mausbach MJ, Doran JW, Cline RG, Harris RF, Schuman GE (1997) Soil quality: a concept, definition, and framework for evaluation (a guest editorial). Soil Science Society of America Journal 61, 4–10.
| Soil quality: a concept, definition, and framework for evaluation (a guest editorial).Crossref | GoogleScholarGoogle Scholar |
Kleber M, Mikutta R, Torn MS, Jahn R (2005) Poorly crystalline mineral phases protect organic matter in acid subsoil horizons. European Journal of Soil Science 56, 717–725.
Kleber M, Sollins P, Sutton R (2007) A conceptual model of organo-mineral interactions in soils: self-assembly of organic molecular fragments into zonal structures on mineral surfaces. Biogeochemistry 85, 9–24.
| A conceptual model of organo-mineral interactions in soils: self-assembly of organic molecular fragments into zonal structures on mineral surfaces.Crossref | GoogleScholarGoogle Scholar |
Kögel-Knabner I, Hempfling R, Zech W, Hatcher PG, Schulten HR (1988) Chemical composition of the organic matter in forest soil; I. Forest litter. Soil Science 146, 124–136.
| Chemical composition of the organic matter in forest soil; I. Forest litter.Crossref | GoogleScholarGoogle Scholar |
Krull ES, Baldock JA, Skjemstad JO (2003) Importance of mechanisms and processes of the stabilisation of soil organic matter for modelling carbon turnover. Functional Plant Biology 30, 207–222.
| Importance of mechanisms and processes of the stabilisation of soil organic matter for modelling carbon turnover.Crossref | GoogleScholarGoogle Scholar |
Laishram ID, Yadava PS (1988) Lignin and nitrogen in the decomposition of leaf litter in a sub-tropical forest ecosystem at Shiroy hills in north-eastern India. Plant and Soil 106, 59–64.
| Lignin and nitrogen in the decomposition of leaf litter in a sub-tropical forest ecosystem at Shiroy hills in north-eastern India.Crossref | GoogleScholarGoogle Scholar |
Lehmann J, Kleber M (2015) The contentious nature of soil organic matter. Nature 528, 60–68.
| The contentious nature of soil organic matter.Crossref | GoogleScholarGoogle Scholar | 26595271PubMed |
Levi-Minzi R, Riffaldi R, Saviozzi A (1986) Organic matter and nutrients in fresh and mature farmyard manure. Agricultural Wastes 16, 225–236.
| Organic matter and nutrients in fresh and mature farmyard manure.Crossref | GoogleScholarGoogle Scholar |
Mahajan A, Gupta RD (2009) Role of INM in sustainable rice–wheat cropping system. In ‘Integrated nutrient management (INM) in a sustainable rice-wheat cropping system’. (Eds A Mahajan, RD Gupta) pp. 139–168. (Springer: Netherlands)
Mahieu N, Olk DC, Randall EW (2002) Multinuclear magnetic resonance analysis of two humic acid fractions from lowland rice soils. Journal of Environmental Quality 31, 421–430.
| Multinuclear magnetic resonance analysis of two humic acid fractions from lowland rice soils.Crossref | GoogleScholarGoogle Scholar | 11931429PubMed |
Mandal B, Majumder B, Bandyopadhyay PK, Hazra GC, Gangopadhyay A, Samantaray RN, Mishra AK, Chaudhuri J, Saha MN, Kundu S (2007) The potential of cropping systems and soil amendments for carbon sequestration in soils under long-term experiments in subtropical India. Global Change Biology 13, 357–369.
| The potential of cropping systems and soil amendments for carbon sequestration in soils under long-term experiments in subtropical India.Crossref | GoogleScholarGoogle Scholar |
Martin D, Srivastava PC, Ghosh D, Zech W (1998) Characteristics of humic substances in cultivated and natural forest soils of Sikkim. Geoderma 84, 345–362.
| Characteristics of humic substances in cultivated and natural forest soils of Sikkim.Crossref | GoogleScholarGoogle Scholar |
Meentemeyer V (1978) Macroclimate and lignin control of litter decomposition rates. Ecology 59, 465–472.
| Macroclimate and lignin control of litter decomposition rates.Crossref | GoogleScholarGoogle Scholar |
Mikutta R, Kleber M, Jahn R (2005) Poorly crystalline minerals protect organic carbon in clay subfractions from acid subsoil horizons. Geoderma 128, 106–115.
| Poorly crystalline minerals protect organic carbon in clay subfractions from acid subsoil horizons.Crossref | GoogleScholarGoogle Scholar |
Mikutta R, Kleber M, Torn MS, Jahn R (2006) Stabilization of soil organic matter: association with minerals or chemical recalcitrance? Biogeochemistry 77, 25–56.
| Stabilization of soil organic matter: association with minerals or chemical recalcitrance?Crossref | GoogleScholarGoogle Scholar |
Mikutta R, Mikutta C, Kalbitz K, Scheel T, Kaiser K, Jahn R (2007) Biodegradation of forest floor organic matter bound to minerals via different binding mechanisms. Geochimica et Cosmochimica Acta 71, 2569–2590.
| Biodegradation of forest floor organic matter bound to minerals via different binding mechanisms.Crossref | GoogleScholarGoogle Scholar |
Murphy EM, Zachara JM, Smith SC (1990) Influence of mineral-bound humic substances on the sorption of hydrophobic organic compounds. Environmental Science and Technology 24, 1507–1516.
| Influence of mineral-bound humic substances on the sorption of hydrophobic organic compounds.Crossref | GoogleScholarGoogle Scholar |
Naidja A, Huang PM, Anderson DW, Van Kessel C (2002) Fourier transform infrared, uv-visible, and x-ray diffraction analyses of organic matter in humin, humic acid, and fulvic acid fractions in soil exposed to elevated co2 and n fertilization. Applied Spectroscopy 56, 318–324.
| Fourier transform infrared, uv-visible, and x-ray diffraction analyses of organic matter in humin, humic acid, and fulvic acid fractions in soil exposed to elevated co2 and n fertilization.Crossref | GoogleScholarGoogle Scholar |
Nambiar KKM (2002) ‘Soil fertility and crop productivity under long-term fertiliser use in India.’ (ICAR: New Delhi, India)
Nayak AK, Gangwar B, Shuklab AK, Mazumdar SP, Kumar A, Raja R, Kumar A, Kumar V, Rai PK, Mohan U (2012) Long-term effect of different integrated nutrient management on soil organic carbon and its fractions and sustainability of rice–wheat system in Indo Gangetic Plains of India. Field Crops Research 127, 129–139.
| Long-term effect of different integrated nutrient management on soil organic carbon and its fractions and sustainability of rice–wheat system in Indo Gangetic Plains of India.Crossref | GoogleScholarGoogle Scholar |
Oades JM, Waters AG (1991) Aggregate hierarchy in soils. Australian Journal of Soil Research 29, 815–824.
| Aggregate hierarchy in soils.Crossref | GoogleScholarGoogle Scholar |
Pal DK, Bhattacharyya T, Srivastava P, Chandran P, Ray SK (2009) Soils of the Indo-Gangetic Plains: their historical perspective and management. Current Science 96, 1193–1202.
Preston CM (1996) Applications of NMR to soil organic matter analysis: history and prospects. Soil Science 161, 144–166.
| Applications of NMR to soil organic matter analysis: history and prospects.Crossref | GoogleScholarGoogle Scholar |
Preston CM, Newman RH, Rother P (1994) Using 13C CPMAS NMR to assess effects of cultivation on the organic matter of particle size fractions in a grassland soil. Soil Science 157, 26–35.
| Using 13C CPMAS NMR to assess effects of cultivation on the organic matter of particle size fractions in a grassland soil.Crossref | GoogleScholarGoogle Scholar |
Quiquampoix H, Abadie J, Baron MH, Leprince F, Matumoto-Pintro PT, Ratcliffe RG, Staunton S (1995) Mechanisms and consequences of protein adsorption on soil mineral surfaces. ACS Symposium Series 602, 321–333.
| Mechanisms and consequences of protein adsorption on soil mineral surfaces.Crossref | GoogleScholarGoogle Scholar |
Ramesh P, Panwar NR, Singh AB, Ramanna S (2009) Production potential, nutrient uptake, soil fertility and economics of soybean (Glycine max)-based cropping systems under organic, chemical and integrated nutrient management practices. Indian Journal of Agronomy 54, 278–283.
Randlett DL, Zak DR, Pregitzer KS, Curtis PS (1996) Elevated atmospheric carbon dioxide and leaf litter chemistry: influences on microbial respiration and net nitrogen mineralization. Soil Science Society of America Journal 60, 1571–1577.
| Elevated atmospheric carbon dioxide and leaf litter chemistry: influences on microbial respiration and net nitrogen mineralization.Crossref | GoogleScholarGoogle Scholar |
Russell AE, Laird DA, Parkin TB, Mallarino AP (2005) Impact of nitrogen fertilization and cropping system on carbon sequestration in Midwestern Mollisols. Soil Science Society of America Journal 69, 413–422.
| Impact of nitrogen fertilization and cropping system on carbon sequestration in Midwestern Mollisols.Crossref | GoogleScholarGoogle Scholar |
Sarkar M, Sutradhar S, Sarwar AKMG, Uddin NM, Chanda SC, Sarwar J (2017) Variation of chemical characteristics and publicity of dhaincha (Sesbania bispinosa) on location. Journal of Bioresources and Bioproducts 2, 24–29.
Schjønning P, de Jonge LW, Munkholm LJ, Moldrup P, Christensen BT, Olesen JE (2012) Clay dispersibility and soil friability—testing the soil clay-to-carbon saturation concept. Vadose Zone Journal 11, 174–187.
| Clay dispersibility and soil friability—testing the soil clay-to-carbon saturation concept.Crossref | GoogleScholarGoogle Scholar |
Silverstein RM, Bassler GC, Morrill TC (1991) ‘In Spectrometric identification of organic compounds, Infrared Spectrometry.’ (New York: John Wiley & Sons).
Spaccini R, Piccolo A, Conte P, Mbagwu JSC (2006) Changes of humic substances characteristics from forested to cultivated soils in Ethiopia. Geoderma 132, 9–19.
| Changes of humic substances characteristics from forested to cultivated soils in Ethiopia.Crossref | GoogleScholarGoogle Scholar |
Sposito G, Skipper NT, Sutton R, Park S-h, Soper AK, Greathouse JA (1999) Surface geochemistry of the clay minerals. Proceedings of the National Academy of Sciences of the United States of America 96, 3358–3364.
| Surface geochemistry of the clay minerals.Crossref | GoogleScholarGoogle Scholar | 10097044PubMed |
Stevenson FJ (1994) ‘Humus chemistry: genesis, composition, reactions.’ (John Wiley & Sons: New York)
Stout JD, Goh KM, Rafter TA (1985) Chemistry and turnover of naturally occurring resistant organic compounds in soil. In ‘Soil biochemistry Vol. 6’. (Eds EA Paul, JN Ladd) pp. 1–73 (Marcel Ž Dekker: New York)
Swift RS (1996) Organic matter characterization. In ‘Methods of soil analysis, Part 3: Chemical methods’. (Ed. DL Sparks) pp. 1011–1020. (SSSA: Madison, WI, USA)
Tian G, Kang BT, Brussard L (1992) Biological effects of plant residues with contrasting chemical compositions under humid tropical conditions – a decomposition and nutrient release. Soil Biology and Biochemistry 24, 1051–1060.
| Biological effects of plant residues with contrasting chemical compositions under humid tropical conditions – a decomposition and nutrient release.Crossref | GoogleScholarGoogle Scholar |
Tian QX, He HB, Cheng WX, Bai Z, Wang Y, Zhang X (2016) Factors controlling soil organic carbon stability along a temperate forest altitudinal gradient. Scientific Reports 6, 1–9.
von Lützow M, Kögel-Knabner I, Ekschmitt K, Matzner E, Guggenberger G, Marschner B, Flessa H (2006) Stabilization of organic matter in temperate soils: mechanisms and their relevance under different soil conditions- a review. European Journal of Soil Science 57, 426–445.
| Stabilization of organic matter in temperate soils: mechanisms and their relevance under different soil conditions- a review.Crossref | GoogleScholarGoogle Scholar |
von Lützow M, Kögel-Knabner I, Ekschmitt K, Flessa H, Guggenberger G, Matzner E, Marschner B (2007) SOM fractionation methods: relevance to functional pools and to stabilization mechanisms. Soil Biology and Biochemistry 39, 2183–2207.
| SOM fractionation methods: relevance to functional pools and to stabilization mechanisms.Crossref | GoogleScholarGoogle Scholar |
Wang X-C, Lee C (1993) Adsorption and desorption of aliphatic amines, amino acids and acetate by clay minerals and marine sediments. Marine Chemistry 44, 1–23.
| Adsorption and desorption of aliphatic amines, amino acids and acetate by clay minerals and marine sediments.Crossref | GoogleScholarGoogle Scholar |
Wiaux F, Cornélis JT, Cao W, Vanclooster M, Van Oost K (2014) Combined effect of geomorphic and pedogenic processes on the distribution of soil organic carbon quality along an eroding hillslope on loess soil. Geoderma 216, 36–47.
| Combined effect of geomorphic and pedogenic processes on the distribution of soil organic carbon quality along an eroding hillslope on loess soil.Crossref | GoogleScholarGoogle Scholar |
Wiseman CLS, Puttmann W (2005) Soil organic carbon and its sorptive preservation in central Germany. European Journal of Soil Science 56, 65–76.
| Soil organic carbon and its sorptive preservation in central Germany.Crossref | GoogleScholarGoogle Scholar |
Xu C, Tao H, Tian B, Gao Y, Ren J, Wang P (2016) Limited-irrigation improves water use efficiency and soil reservoir capacity through regulating root and canopy growth of winter wheat. Field Crops Research 196, 268–275.
| Limited-irrigation improves water use efficiency and soil reservoir capacity through regulating root and canopy growth of winter wheat.Crossref | GoogleScholarGoogle Scholar |
Yadav R, Purakayastha TJ, Khan MA, Kaushik S (2017) Long-term impact of manuring and fertilization on enrichment, stability and quality of organic carbon in Inceptisol under potato-based cropping systems. Science of the Total Environment 609, 1535–1543.
| Long-term impact of manuring and fertilization on enrichment, stability and quality of organic carbon in Inceptisol under potato-based cropping systems.Crossref | GoogleScholarGoogle Scholar | 28800695PubMed |
Yang J, Liu J, Hu Y, Rumpel C, Bolan N, Sparks D (2017) Molecular-level understanding of malic acid retention mechanisms in ternary kaolinite-Fe(III)-malic acid systems: the importance of Fe speciation. Chemical Geology 464, 69–75.
| Molecular-level understanding of malic acid retention mechanisms in ternary kaolinite-Fe(III)-malic acid systems: the importance of Fe speciation.Crossref | GoogleScholarGoogle Scholar |