Particulate organic matter in soil under different management systems in the Brazilian Cerrado
Arcângelo Loss A D , Marcos Gervasio Pereira B , Adriano Perin C , Fernando Silva Coutinho B and Lúcia Helena Cunha dos Anjos B
+ Author Affiliations
- Author Affiliations
A Department of Rural Engineering, Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC 88034-000, Brazil.
B Department of Soils, UFRRJ, Seropédica, RJ 23890-000, Brazil.
C Instituto Federal Goiano, Rio Verde, GO 75901-970, Brazil.
D Corresponding author. Email: arcangeloloss@yahoo.com.br
Soil Research 50(8) 685-693 https://doi.org/10.1071/SR12196
Submitted: 18 July 2012 Accepted: 22 December 2012 Published: 5 February 2013
Abstract
The combination of the no-till planting system (NTS) and pasture (e.g. brachiaria grass, Urochloa sp.) for livestock production constitutes a crop–livestock integration (CLI) system. CLI systems significantly increase the total organic carbon (TOC) content of soil and the particulate organic carbon (POC) of soil organic matter (SOM). The present study evaluated TOC and the granulometric fractions of SOM under different management systems in a Cerrado area in the state of Goiás. Two areas applying crop rotation were evaluated, one using CLI (corn/brachiaria grass/bean/cotton/soybean planted sequentially) and the other NTS (sunflower/pearl millet/soybean/corn planted sequentially). A third area covered with natural Cerrado vegetation (Cerradão) served as a reference to determine original soil conditions. Soil was randomly sampled at 0–5, 5–10, 10–20, and 20–40 cm. The TOC, POC, and mineral-associated organic carbon (MOC) were assessed, and POC and MOC stocks calculated. The CLI system resulted in greater TOC levels than NTS (0–5, 5–10, and 10–20 cm). Compared with the Cerradão, CLI areas exhibited higher stocks of TOC (at 5–10 and 10–20 cm) and POC (at 0–40 cm). Results obtained for TOC and POC fractions show that land management with CLI was more efficient in increasing SOM than NTS. Moreover, when compared with NTS, the CLI system provided better POC stratification.
Additional keywords: carbon stocks, crop–livestock integration, no-tillage system, particulate carbon.
References
Anghinoni I (2007) Fertilidade do solo e seu manejo no sistema plantio direto. In ‘Fertilidade do Solo’. Vol. 1. 1st edn (Eds RF Novais, VH Alvarez, NF Barros, RLF Fontes, RB Cantarutti, JCL Neves) pp. 873–928. (Brazilian Soil Science Society: Viçosa)Bernoux M, Cerri CC, Cerri CEP, Siqueira Neto M, Metay A, Perrin AS, Scopel E, Blavet D, Piccolo MC (2004) Influence of no-tillage on carbon sequestration and erosion in Brazil. Bulletin Réseau Erosion 23, 323–337.
Bhattacharyya R, Tuti MD, Kundu S, Bisht JK, Bhatt JC (2012) Conservation tillage impacts on soil aggregation and carbon pools in a sandy clay loam soil of the Indian Himalayas. Soil Science Society of America Journal 76, 617–627.
| Conservation tillage impacts on soil aggregation and carbon pools in a sandy clay loam soil of the Indian Himalayas.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38XktFOhsbc%3D&md5=576cfeb68a0a614d0ad9dfcfd405c8b6CAS |
Blanchart E, Bernoux M, Sarda X, Siqueira Neto M, Cerri CC, Piccolo MC, Douzet J, Scopel E, Feller C (2007) Effect of direct seeding mulch-based systems on soil carbon storage and macrofauna in Central Brazil. Agriculturae Conspectus Science 72, 81–87.
Boddey R, Jantalia CP, Conceição PCE, Zanatta JA, Mielniczuk J, Dieckow J, Santos HP, Denardin JE, Giacomini SJ, Urquiaga SCS, Alves BJR (2010) Carbon accumulation at depth in Ferralsols under zero-till subtropical agriculture. Global Change Biology 16, 784–795.
| Carbon accumulation at depth in Ferralsols under zero-till subtropical agriculture.Crossref | GoogleScholarGoogle Scholar |
Bolliger A, Magid J, Amado TJ, Skora Neto F, Ribeiro F, Callegari A, Ralisch R, Neergaard A (2006) Taking stock of the Brazilian zero-till revolution: A review of landmark research and farmers’ practice. Advances in Agronomy 91, 47–110.
| Taking stock of the Brazilian zero-till revolution: A review of landmark research and farmers’ practice.Crossref | GoogleScholarGoogle Scholar |
Bouajila A, Gallali T (2010) Land use effect on soil and particulate organic carbon, and aggregate stability in some soils in Tunisia. African Journal of Agricultural Research 5, 764–774.
Brancalião SR, Moraes MH (2008) Alterações de alguns atributos físicos e das frações húmicas de um Nitossolo Vermelho na sucessão milheto-soja em sistema plantio direto. Revista Brasileira de Ciencia do Solo 32, 393–404.
| Alterações de alguns atributos físicos e das frações húmicas de um Nitossolo Vermelho na sucessão milheto-soja em sistema plantio direto.Crossref | GoogleScholarGoogle Scholar |
Briedis C, Sá JCM, Caires EF, Navarro JF, Inagaki TM, Boer A, Oliveira F, Neto CQ, Canalli LB, Bürkner SJ (2012) Changes in organic matter pools and increases in carbon sequestration in response to surface liming in an Oxisol under long-term no-till. Soil Science Society of America Journal 76, 151–160.
| Changes in organic matter pools and increases in carbon sequestration in response to surface liming in an Oxisol under long-term no-till.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38XnvFKrsw%3D%3D&md5=058aefeddbc96450718cc5d27ac5a527CAS |
Cambardella CA, Elliott ET (1992) Particulate soil organic-matter changes across a grassland cultivation sequence. Soil Science Society of America Journal 56, 777–783.
| Particulate soil organic-matter changes across a grassland cultivation sequence.Crossref | GoogleScholarGoogle Scholar |
Carter MR, Angers DA, Gregorich EG, Bolinder MA (2003) Characterizing organic matter retention for surface soils in eastern Canada using density and particle size fractions. Canadian Journal of Soil Science 83, 11–23.
| Characterizing organic matter retention for surface soils in eastern Canada using density and particle size fractions.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3sXjt1Smtbw%3D&md5=68c96d83f7acae46c6978ce25096c90bCAS |
Carvalho JLN, Raucci GS, Cerri CEP, Bernoux M, Feigl BJ, Wruck FJ, Cerri CC (2010) Impact of pasture, agriculture and crop-livestock systems on soil C stocks in Brazil. Soil & Tillage Research 110, 175–186.
| Impact of pasture, agriculture and crop-livestock systems on soil C stocks in Brazil.Crossref | GoogleScholarGoogle Scholar |
Ciampitti IA, García FO, Picone LI, Rubio G (2011) Soil carbon and phosphorus pools in field crop rotations in pampean soils of Argentina. Soil Science Society of America Journal 75, 616–625.
| Soil carbon and phosphorus pools in field crop rotations in pampean soils of Argentina.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXksFOks70%3D&md5=336b24c49d59f4d5c9195d68d8b11c24CAS |
Clark EA (2004) Benefits of re-integrating livestock and forages in crop production systems. Journal of Crop Improvement 12, 405–436.
| Benefits of re-integrating livestock and forages in crop production systems.Crossref | GoogleScholarGoogle Scholar |
Conceição PC, Amado TJC, Mielniczuk J, Spagnollo E (2005) Qualidade do solo em sistemas de manejo avaliada pela dinâmica da matéria orgânica e atributos relacionados. Revista Brasileira de Ciencia do Solo 29, 777–788.
| Qualidade do solo em sistemas de manejo avaliada pela dinâmica da matéria orgânica e atributos relacionados.Crossref | GoogleScholarGoogle Scholar |
Corsi S, Friedrich T, Kassan A, Pisante M, Sá JCM (2012) ‘Soil organic carbon accumulation and greenhouse gas emission reductions from conservation agriculture: A literature review.’ Vol. 01. 1st edn (FAO: Rome)
Costa Junior C, Piccolo MC, Siqueira Neto M, Camargo PB, Cerri CC, Bernoux M (2011) Carbono total e δ13C em agregados do solo sob vegetação nativa e pastagem no bioma Cerrado. Revista Brasileira de Ciencia do Solo 35, 1241–1252.
| Carbono total e δ13C em agregados do solo sob vegetação nativa e pastagem no bioma Cerrado.Crossref | GoogleScholarGoogle Scholar |
Ellert BH, Bettany JR (1995) Calculation of organic matter and nutrients stored in soils under contrasting management regimes. Canadian Journal of Soil Science 75, 529–538.
| Calculation of organic matter and nutrients stored in soils under contrasting management regimes.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK28XhslKlsbo%3D&md5=2c31928b3873b1fbb2727b449836b997CAS |
EMBRAPA (1997) ‘Manual de métodos de análise de solo.’ 2nd edn (Empresa Brasileira de Pesquisa Agropecuária, Centro Nacional de Pesquisa Agropecuária de Solos: Rio de Janeiro)
EMBRAPA (2006) ‘Sistema Brasileiro de Classificação de Solos.’ (Empresa Brasileira de Pesquisa Agropecuária, Centro Nacional de Pesquisa Agropecuária de Solos: Rio de Janeiro)
Fearnside PM (2000) Global warming and tropical land-use change: greenhouse gas emissions from biomass burning, decomposition and soils in forest conversion, shifting cultivation and secondary vegetation. Climatic Change 46, 115–158.
| Global warming and tropical land-use change: greenhouse gas emissions from biomass burning, decomposition and soils in forest conversion, shifting cultivation and secondary vegetation.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3cXlsVCmtr8%3D&md5=ec631bc738290eda62b939fd1d771091CAS |
Fernández PL, Alvarez CR, Taboada MA (2011) Assessment of topsoil properties in integrated crop–livestock and continuous cropping systems under zero tillage. Soil Research 49, 143–151.
| Assessment of topsoil properties in integrated crop–livestock and continuous cropping systems under zero tillage.Crossref | GoogleScholarGoogle Scholar |
Figueiredo CC, Resck DVS, Carneiro MAC (2010) Labile and stable fractions of soil organic matter under management systems and native cerrado. Revista Brasileira de Ciencia do Solo 34, 907–916.
| Labile and stable fractions of soil organic matter under management systems and native cerrado.Crossref | GoogleScholarGoogle Scholar |
Franzluebbers IJ, Stuedemann JA (2008) Early response of soil organic fractions to tillage and integrated crop–livestock production. Soil Science Society of America Journal 72, 613–625.
| Early response of soil organic fractions to tillage and integrated crop–livestock production.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXmtlansrg%3D&md5=648104c8fc4dd6b40d0fdb027e736b84CAS |
Fronning BE, Thelen KD, Min D (2008) Use of manure, compost, and cover crops to supplant crop residue carbon in corn stover removed cropping systems. Agronomy Journal 100, 1703–1710.
| Use of manure, compost, and cover crops to supplant crop residue carbon in corn stover removed cropping systems.Crossref | GoogleScholarGoogle Scholar |
Hurlbert SH (1984) Pseudoreplication and the design of ecological field experiments. Ecological Monographs 54, 187–211.
Jantalia CP, Resck DVS, Alves BJR, Zotarelli L, Urquiaga S, Boddey RM (2007) Tillage effect on C stocks of a clayey oxisol under a soybean-based crop rotation in the Brazilian Cerrado. Soil & Tillage Research 95, 97–109.
| Tillage effect on C stocks of a clayey oxisol under a soybean-based crop rotation in the Brazilian Cerrado.Crossref | GoogleScholarGoogle Scholar |
Kluthcouski J, Yokoyama LP (2003) Crop–livestock integration options. In ‘Integração lavoura–pecuária’. (Eds J Kluthcouski, LF Stone, H Aidar) (Embrapa Arroz e Feijão: Santo Antônio de Goiás, GO) Available at: www.fao.org/ag/AGP/AGPC/doc/integration/papers/integration_options.htm
Komatsuzaki M, Ohta H (2007) Soil management practices for sustainable agro-ecosystems. Sustainability Science 2, 103–120.
| Soil management practices for sustainable agro-ecosystems.Crossref | GoogleScholarGoogle Scholar |
Landers JN (2007) Tropical crop-livestock systems in conservation agriculture: the Brazilian experience. Integrated Crop Management 5, 1–92.
Lee J, Laca EA, Kessel CV, Rolston DE, Hopmans JW, Six J (2009) Tillage effects on spatiotemporal variability of particulate organic matter. Applied and Environmental Soil Science 2009, 219–379.
| Tillage effects on spatiotemporal variability of particulate organic matter.Crossref | GoogleScholarGoogle Scholar |
Liebig MA, Tanaka DL, Wienhold BJ (2004) Tillage and cropping effects on soil quality indicators in the northern Great Plains. Soil & Tillage Research 78, 131–141.
| Tillage and cropping effects on soil quality indicators in the northern Great Plains.Crossref | GoogleScholarGoogle Scholar |
Loss A (2011) Dinâmica da matéria orgânica, fertilidade e agregação do solo em áreas sob diferentes sistemas de uso no Cerrado goiano. PhD Thesis, Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil.
Loss A, Pereira MG, Schultz N, Anjos LHC, Silva EMR (2009) Carbono e frações granulométricas da matéria orgânica do solo sob sistemas de produção. Ciência Rural 39, 1067–1072.
| Carbono e frações granulométricas da matéria orgânica do solo sob sistemas de produção.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXovFSlurY%3D&md5=dfea302b9eb0f5fa0c35d2b186e60252CAS |
Loss A, Pereira MG, Giácomo SG, Perin A, dos Anjos LHC (2011) Agregação, carbono e nitrogênio em agregados do solo sob plantio direto com integração lavoura-pecuária. Pesquisa Agropecuaria Brasileira 46, 1269–1276.
| Agregação, carbono e nitrogênio em agregados do solo sob plantio direto com integração lavoura-pecuária.Crossref | GoogleScholarGoogle Scholar |
Loss A, Pereira MG, Perin A, Anjos LHC (2012a) Carbon and nitrogen content and stock in no-tillage and crop-livestock integration systems in the Cerrado of Goias State, Brazil. The Journal of Agricultural Science 4, 96–105.
Loss A, Pereira MG, Perin A, Beutler SJ, Anjos LHC (2012b) Carbon, nitrogen and natural abundance of δ13C e δ15N of light-fraction organic matter under no-tillage and crop-livestock integration systems. Acta Scientiarum. Agronomy 34, 465–472.
| Carbon, nitrogen and natural abundance of δ13C e δ15N of light-fraction organic matter under no-tillage and crop-livestock integration systems.Crossref | GoogleScholarGoogle Scholar |
Marchão R, Becquer T, Brunet D, Balbino L, Vilela L, Brossard M (2009) Carbon and nitrogen stocks in a Brazilian clayey Oxisol: 13-year effects of integrated crop livestock management systems. Soil & Tillage Research 103, 442–450.
| Carbon and nitrogen stocks in a Brazilian clayey Oxisol: 13-year effects of integrated crop livestock management systems.Crossref | GoogleScholarGoogle Scholar |
Miller PG (2012) Agroecology of three integrated crop-livestock systems in the Texas High Plains. PhD Thesis, Texas Tech University, Lubbock, TX.
Mirsky SB, Lonyon LE, Needel BA (2008) Evaluating soil management using particulate and chemical labile organic matter fractions. Soil Science Society of America Journal 72, 180–185.
| Evaluating soil management using particulate and chemical labile organic matter fractions.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXht1Ogurs%3D&md5=311cd194f423cf61988fb37189c9fa2cCAS |
Muggler CC, Griethuysen C, Buurman P, Pape T (1999) Aggregation, organic matter, and iron oxide morphology in oxisols from Minas Gerais, Brazil. Soil Science 164, 759–770.
| Aggregation, organic matter, and iron oxide morphology in oxisols from Minas Gerais, Brazil.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK1MXntFCrsrw%3D&md5=bc5abaa18c23181591577ca31946871cCAS |
Njaimwe AN (2010) Tillage and crop rotation impacts on soil quality parameters and maize yield in zanyokwe irrigation scheme, South Africa. PhD Thesis. Kansas State University. Department of Agronomy/University of Fort Hare, South Africa.
Pacheco AR, Chaves RQ, Nicoli CML (2012) Integration of crops, livestock, and forestry: A system of production for the Brazilian Cerrados. In ‘Eco-efficiency: from vision to reality’. (Ed. KG Cassman) Ch. 4. (CIAT: Cali, Colombia)
Parihar CM, Rana KS, Jat ML, Jat SLM, Parihar D, Kantwa SR, Singh DK, Sharma S (2012) Carbon footprint and economic sustainability of pearl millet-mustard system under different tillage and nutrient management practices in moisture stress conditions. African Journal of Microbiology Research 6, 5052–5061.
Passos RR, Ruiz HA, Cantarutti RB, Sá-Mendonça E (2007) Carbono orgânico e nitrogênio em agregados de um Latossolo Vermelho sob duas coberturas vegetais. Revista Brasileira de Ciencia do Solo 31, 1109–1118.
| Carbono orgânico e nitrogênio em agregados de um Latossolo Vermelho sob duas coberturas vegetais.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXhvFeisA%3D%3D&md5=9f3344953fc1b6cf1abd628a95f6ce29CAS |
Paterson J, Hoyle F (2011) Soil organic carbon—A Western Australian perspective. Department of Agriculture and Food, Western Australia. Available at: www.agric.wa.gov.au/objtwr/imported_assets/content/lwe/land/acid/soil-organic-carbon_%20fs.pdf
Pereira MG, Loss A, Beutler SJ, Torres JLR (2010) Carbono, matéria orgânica leve e fósforo remanescente em áreas de Cerrado sob plantio direto, MG. Pesquisa Agropecuaria Brasileira 45, 508–514.
| Carbono, matéria orgânica leve e fósforo remanescente em áreas de Cerrado sob plantio direto, MG.Crossref | GoogleScholarGoogle Scholar |
Pereira MG, Loss A, Beutler SJ, Torres JLR (2012) Granulometric and humic fractions carbon stocks of soil organic matter under no-tillage system in Uberaba, Brazil. Tropical and Subtropical Agroecosystems, Yucatán 15, 1–13.
Pinheiro-Dick D, Schwertmann U (1996) Microaggregates from oxisols and inceptisols: dispersion through seletive dissolutions and physico-chemical treatments. Geoderma 74, 49–63.
| Microaggregates from oxisols and inceptisols: dispersion through seletive dissolutions and physico-chemical treatments.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK2sXosVSr&md5=e41a588e0f6a4354d7b369bcc657d9d0CAS |
Rossi CQ, Pereira MG, Giacomo SG, Betta M, Polidoro JC (2012) Frações lábeis da matéria orgânica em sistema de cultivo com palha de braquiária e sorgo. Revista Ciência Agronômica 43, 38–46.
Sá JCM, Lal R (2009) Stratification ratio of soil organic matter pools as an indicator of carbon sequestration in a tillage chronosequence on a Brazilian Oxisol. Soil & Tillage Research 103, 46–56.
| Stratification ratio of soil organic matter pools as an indicator of carbon sequestration in a tillage chronosequence on a Brazilian Oxisol.Crossref | GoogleScholarGoogle Scholar |
Sá JCM, Cerri CC, Dick WA, Lal R, Venzke-Filho SP, Piccolo MC, Feigl BJ (2001) Organic matter dynamics and carbon sequestration rates for a tillage chronosequence in a Brazilian oxisol. Soil Science Society of America Journal 65, 1486–1499.
| Organic matter dynamics and carbon sequestration rates for a tillage chronosequence in a Brazilian oxisol.Crossref | GoogleScholarGoogle Scholar |
Sá JCM, Lal R, Dick WA, Piccolo MC, Feigl BE (2009) Soil organic carbon and fertility interactions affected by a tillage chronosequence in a Brazilian Oxisol. Soil & Tillage Research 104, 56–64.
| Soil organic carbon and fertility interactions affected by a tillage chronosequence in a Brazilian Oxisol.Crossref | GoogleScholarGoogle Scholar |
Sano EE, Ferreira LG, Asner GP, Steinke ET (2007) Spatial and temporal probabilities of obtaining cloud-free Landsat images over the Brazilian tropical savanna. International Journal of Remote Sensing 28, 2739–2752.
| Spatial and temporal probabilities of obtaining cloud-free Landsat images over the Brazilian tropical savanna.Crossref | GoogleScholarGoogle Scholar |
Silva AA, Galon R, Galon L, Ferreira FA, Tirloni SP, Ferrreira EA, Silva AF, Agnes EL (2009) Sistema de plantio direto na palhada e seu impacto na agricultura brasileira. Revista Ceres 56, 496–506.
Siqueira Neto M, Piccolo MC, Scopel E, Costa-Junior C, Cerri CC, Bernoux M (2009) Carbono total e atributos químicos com diferentes usos do solo no Cerrado. Acta Scientiarum. Agronomy 31, 709–717.
| Carbono total e atributos químicos com diferentes usos do solo no Cerrado.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXhsVyhsLbK&md5=81dd7345a108f9b593af90b1b0eb67f5CAS |
Sisti CPJ, Santos HP, Kohhann R, Alves BJR, Urquiaga S, Boddey RM (2004) Change in carbon and nitrogen stocks in soil under 13 years of conventional or zero tillage in southern Brazil. Soil & Tillage Research 76, 39–58.
| Change in carbon and nitrogen stocks in soil under 13 years of conventional or zero tillage in southern Brazil.Crossref | GoogleScholarGoogle Scholar |
Six J, Elliott ET, Paustian K (1999) Aggregate and soil organic matter dynamics under conventional and no-tillage systems. Soil Science Society of America Journal 63, 1350–1358.
| Aggregate and soil organic matter dynamics under conventional and no-tillage systems.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK1MXns12lsb0%3D&md5=c124f370ae36a5ba0c75e4742244929dCAS |
Soane BD, Ballb BC, Arvidssonc J, Baschd G, Morenoe F, Roger-Estradef J (2012) No-till in northern, western and south-western Europe: a review of problems and opportunities for crop production and the environment. Soil & Tillage Research 118, 66–87.
| No-till in northern, western and south-western Europe: a review of problems and opportunities for crop production and the environment.Crossref | GoogleScholarGoogle Scholar |
Soil Survey Staff (2006) ‘Keys to Soil Taxonomy.’ 10th edn (USDA-SCS: Washington, DC)
Souza ED, Carneiro MAC, Paulino HB, Silva CA, Buzetti S (2010) Soil aggregation in a crop–livestock integration system under no-tillage. Revista Brasileira de Ciencia do Solo 34, 1365–1374.
| Soil aggregation in a crop–livestock integration system under no-tillage.Crossref | GoogleScholarGoogle Scholar |
Turbé A, Toni A, Benito P, Lavelle P, Lavelle P, Ruiz N, Wim H, Putten VD, Labouze E, Mudgal S (2010) Soil biodiversity: functions, threats and tools for policy makers. Biological Intelligence Service, IRD, and NIOO. Report for European Commission (DG Environment). 254p.
Uprety DC, Dhar S, Hongmin D, Kimball BA, Jigeesha AGU (2012) ‘Technologies for climate change mitigation—Agriculture Sector.’ (UNEP Risø Centre on Energy, Climate and Sustainable Development, Technical University of Denmark: Frederiksborg)
USDA (2011) Soil quality indicators 2011. USDA Natural Resources Conservation Service. Available at: http://soils.usda.gov/sqi/assessment/files/pom_sq_biological_indicator_sheet.pdf
Yeomans JC, Bremner JM (1988) A rapid and precise method for routine determination of organic carbon in soil. Communications in Soil Science and Plant Analysis 19, 1467–1476.
| A rapid and precise method for routine determination of organic carbon in soil.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaL1cXlt1Oru7w%3D&md5=15db41120b156fc079cb90dd79926035CAS |
Zhang M, He Z (2004) Long-term changes in organic carbon and nutrients of an Ultisol under rice cropping in southeast China. Geoderma 118, 167–179.
| Long-term changes in organic carbon and nutrients of an Ultisol under rice cropping in southeast China.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2cXjslymtA%3D%3D&md5=420f3674c3570a4c3b38faca751356cdCAS |
Zinn YL, Lal R, Resck DVS (2011) Eucalypt plantation effects on organic carbon and aggregation of three different-textured soils in Brazil. Soil Research 49, 614–624.
| Eucalypt plantation effects on organic carbon and aggregation of three different-textured soils in Brazil.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXhsV2kurzE&md5=bbcf2ce0164eb49d3c88bd4ef75547bcCAS |
