Carbon in aggregate size classes in a Rhodic Eutrudox under different cropping systems
DOI:
https://doi.org/10.5433/1679-0359.2019v40n4p1709Keywords:
Aggregation, Cropping system, Production system, Structure.Abstract
Soil productive capacity is related to levels of carbon (C) in aggregates of different sizes. The aim of this study was to assess total organic carbon levels in different size classes of water-stable aggregates in a Rhodic Eutrudox under different production systems. The cropping systems assessed were no-tillage (NT); no-tillage scarified every three years (NTS); disk plowing (DP) and heavy disking (HD). All systems were subjected to crop succession (S) (soybean - Glycine max / wheat - Triticum aestivum) and rotation (R) (soybean, maize (Zea mays), wheat) and cover and green manure (Lupinus albus, Raphanus sativus and Avena strigosa). Intact soil samples were collected in trenches at depths of 0–0.10; 0.10-0.20; 0.20–0.30 and 0.30-0.40 m. The highest levels of carbon were found under no-tillage, irrespective of the aggregate size class. In all treatments, the top layer (0.0–0,10 m) under crop succession showed the highest carbon content for all aggregate size classes. However, at depths below 0.10 m, crop rotation exhibited the highest carbon levels (between 12 and 20 g kg-1). After 29 years of trials, cropping systems with the lowest soil disturbance combined with crop rotation were found to contribute to raising the level of carbon in the soil and maintaining stable aggregates.Downloads
References
ASSIS, C. P.; JUCKSCH, I.; MENDONÇA, E. S.; NEVES, J. C. L. Carbono e nitrogênio em agregados de Latossolo submetido a diferentes sistemas de uso e manejo. Pesquisa Agropecuária Brasileira, Brasília, v. 41, n. 3, p. 1541-1550, 2006.
BATISTA, J.; PEREIRA, M.G.; CORREIA, M. E. F.; BIELUCZYK, W.; SCHIAVO, J. A.; ROWS, J. R. C. Teores e estoque de carbon em frações lábeis e recalcitrantes da matéria orgânica do solo sob integração lavoura-pecuária no bioma Cerrado. Semina: Ciências Agrárias, Londrina, v. 34, n. 4, p. 3377-3388, 2013. DOI: 10.5433/1679-0359.2013v34n6Supl1p3377
CLAESSEN, M. E. C. (Org.). Manual de métodos de análise de solos. 2. ed. Rio de Janeiro: Serviço Nacional de Levantamento e Conservação de Solos, 1997. 212 p.
COSTA JÚNIOR, C.; PÍCCOLO, M. D. C.; SIQUEIRA NETO, M.; BARBOSA de CAMARGO, P.; CERRI, C. C.; BERNOUX, M. Carbono em agregados do solo sob vegetação nativa, pastagem e sistemas agrícolas no bioma Cerrado. Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 36, n. 5, p. 1311-1321, 2012.
EMPRESA BRASILEIRA DE PESQUISA AGROPECUÁRIA - EMBRAPA. Sistema Brasileiro de classificação de solos. 3. ed. Brasília: Editora Embrapa SPI, 2013.
QIAO, Y.; MIAO, S.; LI, N.; XU, Y.; HAN, X.; ZHANG, B. Crop species affect soil organic carbon turnover in soil profile and among aggregate sizes in a Mollisol as estimated from natural 13C abundance. Plant Soil, The Hague, v. 392, n. 8, p. 163-174, 2015. DOI: 10.1007/s11104-015-2414-8
SANTOS, G. G.; SILVEIRA, P. M.; MARCHÃO, R. L.; PETTER, F. A.; BECQUER, T. Atributos químicos e estabilidade de agregados sob diferentes culturas de cobertura em Latossolo do Cerrado. Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 16, n. 6, p. 1171-1178, 2012.
SARKHOT, D. V.; COMERFORD, N. B.; JOKELA, E. J. Effects of forest management intensity on carbon and nitrogen content in different soil size fractions of a North Florida Spodosol. Plant Soil, The Hague, v. 294, n. 3, p. 291-303, 2007. DOI: 10.1007/s11104-007-9255-z
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