Condicionadores químicos e orgânicos na recuperação de solo salino-sódico em casa de vegetação
作者： Marcelo A Miranda , Emanoel EM de Oliveira , Karen CF dos Santos , Maria BG dos S Freire , Brivaldo G de Almeida
DOI: 10.1590/S1415-43662011000500008
关键词: Cow dung 、 Soil salinity 、 Chemistry 、 Manure 、 Environmental chemistry 、 Environmental engineering 、 Cation-exchange capacity 、 Entisol 、 Soil water 、 Leaching (agriculture) 、 Randomized block design
摘要: The salinization is degrading Brazilian semi-arid soils, which need to be reclaimed for agricultural utilization. This work aimed evaluate use of organic and chemical amendments in a Fluvic Entisol having saline-sodic properties Pernambuco's region. Soil experiment was conducted soil columns, with 10 treatments: sheep manure, cow gypsum, synthetic polymer six concentrations the control, randomized block design. columns were submitted leaching during 70 days, being analyzed leachates collected at 7 days after leaching. In leachates, pH, EC concentration Na+, K+ Cl- determined; saturation extract, pH measured, Na+ exchangeable cation exchange capacity (CEC) determined calculate sodium percentage (ESP). physico-hydric variables also determined. data obtained variance analysis Scott Knott test 0,05 level probability. treatments, especially manures, gypsum smaller decreased EC, ESP soluble increasing hydraulic conductivity soil.
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