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The use of total luminescence spectroscopy in the investigation of the effects of different rice management practices on humic substances of a planosol Rev. Bras. Ciênc. Solo
Olendzki,Rodrigo Nogueira; Ignácio,Andréia Christina; Mangrich,Antonio Salvio.
In the Earth's carbon cycle, C stocks in the soil are higher than in vegetation and atmosphere. Maintaining and conserving organic C concentrations in the soil by specific management practices can improve soil fertility and productivity. The aim of this study was to evaluate the impact of agricultural management techniques and influence of water regime (flooded or drained) on the structure of humic substances by excitation/emission matrix fluorescence. Six samples of a Planosol (Planossolo by the Brazilian System of Soil Classification) were collected from a rice field. Humic substances (HS) were extracted from flooded and drained soil under different agricultural management techniques: conventional tillage, reduced tillage and grassland. Two peaks at a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fulvic acid; Humic acid; Total luminescence spectroscopy.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000500008
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