Influence of temperature on soil aggregation assessed by two methods
DOI:
https://doi.org/10.5902/1980509830949Keywords:
Burned, Aggregates, Management, Soil conservationAbstract
The burnings raise the soil surface temperature and may reduce its aggregation. The objective of this study was to evaluate the influence of soil temperature on its aggregation from different soil managementby water and dry sieving method. The experiment was conducted at the soil physics laboratory of the State University of Bahia (UNEB). The soil characterized as Oxisol was collected in a soybean plantation area under a no-tillage system and in a preserved cerrado area (Cerradão), close to the soybean area. The experimental design was completely randomized in a 2x2x6 factorial scheme, with four replications. The frst factor was soil management (no-tillage soybean and preserved cerrado), the second factor was the method (water and dry sieving) and the third factor was the temperature range (27 °C, 150 °C, 250 °C, 350 °C, 450 °C, 550 °C). The variables analyzed were the percentage of aggregate for classes > 2 mm; 2-1 mm, 1-0,5 mm; 0.5-0,250 mm; 0,250-0,106 mm and less than 0,106 mm. Weighted mean diameter (WMD) and geometric mean diameter (DMG) were also evaluated. The exposure of the soils to high temperatures reduced their aggregation and this reduction was more noticeable by the dry sieving method. Soil monoculture, even under no-tillage system, reduced the stability of the aggregates when compared to the preserved cerrado vegetation.
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AGEGNEHU, G.; AMEDE, T. Integrated soil fertility and plant nutrient management in tropical agro-ecosystems: a review. Pedosphere, Nanjing, v. 27, n. 4, p. 662-680, 2017.
ALCAÑIZ, M. et al. Long-term dynamics of soil chemical properties afer a prescribed fre in a Mediterranean forest (Montgrí Massif, Catalonia, Spain). Science of the Total Environment, Barcelona, v. 572, p. 1329-1335, 2016.
BADÍA-VILLAS, D. et al. Changes in water repellency, aggregation and organic matter of a mollic horizon burned in laboratory: soil depth affected by fre. Geoderma, Pequim, v. 213, p. 400-407, 2014.
BENTO-GONÇALVES, A. et al. Fire and soils: key concepts and recent advances. Geoderma, Pequim, v. 191, p. 3-13, 2012.
BRONICK, C. J.; LAL, R. Soil structure and management: a review. Geoderma, Pequim, v. 124, n. 1, p. 3-22, 2005.
CAMPO, J. et al. Cementing agents involved in the macro-and microaggregation of a Mediterranean shrubland soil under laboratory heating. Catena, Amsterdam, v. 113, p. 165-176, 2014.
CHEN, H. Y. H.; SHRESTHA, B. M. Stand age, fre and clearcutting affect soil organic carbon and aggregation of mineral soils in boreal forests. Soil Biology and Biochemistry, Leicestershire, v. 50, p. 149-157, 2012.
CHEN, Z. et al. Experimental study on physical properties of sof soil afer high temperature exposure. Engineering Geology, Clemson, v. 204, p. 14-22, 2016.
CHRENKOVÁ, K. et al. Long-term changes in soil aggregation comparing forest and agricultural land use in different Mediterranean soil types. Geoderma, Pequim, v. 235, p. 290-299, 2014.
CHUVIECO, E.; GIGLIO, L.; JUSTICE, C. Global characterization of fre activity: toward defning fre regimes from Earth observation data. Global Change Biology, Urbana-Champaign, v. 14, n. 7, p. 1488-1502, 2008.
DIDONÉ, E. J.; MINELLA, J. P. G.; EVRARD, O. Measuring and modelling soil erosion and sediment yields in a large cultivated catchment under no-till of Southern Brazil. Soil and Tillage Research, Santa Rosa, v. 174, p. 24-33, 2017.
EMBRAPA. Centro Nacional de Pesquisa de Solos. Sistema brasileiro de classifcação de solos. Rio de Janeiro, 2006. 306 p.
EMBRAPA. Manual de métodos de análise de solo. Rio de Janeiro: EMBRAPA Solos, 1997.
KEMPER, W. D.; ROSENAU, R. C. Aggregate stability and size distribution. Madison: [s. n.], 1986.
LÖBMANN, M. T. et al. The occurrence of pathogen suppressive soils in Sweden in relation to soil biota, soil properties, and farming practices. Applied Soil Ecology, Firenze, v. 107, p. 57-65, 2016.
LOPES, A. M.; MACHADO, J. A. T. Computational comparison and pattern visualization of forest fres. Chaos, Solitons & Fractals, [s. l.], v. 102, p. 407-413, sept. 2017.
MATAIX-SOLERA, J. et al. Fire effects on soil aggregation: a review. Earth-Science Reviews, Roma, v. 109, n. 1, p. 44-60, 2011.
MÜLLER, M. M.; VACIK, H. Characteristics of lightnings igniting forest fres in Austria. Agricultural and Forest Meteorology, New Haven, v. 240, p. 26-34, 2017.
PINEDA, N.; MONTANYÀ, J.; VAN DER VELDE, O. A. Characteristics of lightning related to wildfre ignitions in Catalonia. Atmospheric research, León, v. 135, p. 380-387, 2014.
SALTON, J. C. et al. Determinação da agregação do solo-metodologia em uso na Embrapa Agropecuária Oeste. [S. l.]: EMBRAPA, 2012. (Comunicado Técnico).
SILVA NETO, L. F. et al. Atributos físicos e químicos de agregados pedogênicos e de coprólitos de minhocas em diferentes classes de solos da Paraíba. Ciência e agrotecnologia, Lavras, v. 34, n. 6, p. 1365-1371, nov./dez. 2010.
THOMAZ, E. L. Fire changes the larger aggregate size classes in slash-and-burn agricultural systems. Soil and Tillage Research, Santa Rosa, v. 165, p. 210-217, 2017.
THOMAZ, E. L. Influência da temperatura no diâmetro e na estabilidade de agregados em chernossolo, Saskatchewan, Canadá. Ciencia del Suelo, Santa Fe, v. 29, n. 2, p. 277-284, 2011.
ZHANG, X. et al. Effects of tillage and residue managements on organic C accumulation and soil aggregation in a sandy loam soil of the North China Plain. Catena, Amsterdam, v. 156, p. 176-183, 2017.