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Clay Mineralogy of Subtropical Soils under Long-Term Organic Fertilization in No-Tillage Systems Rev. Bras. Ciênc. Solo
Pedron,Fabrício de Araújo; Lourenzi,Cledimar Rogério; Ceretta,Carlos Aberto; Lorensi,Juliana; Cancian,Adriana.
ABSTRACT: Organic fertilization effect on physical-chemical properties in no-tillage systems in tropical soils has been widely investigated, but little is known about the effects of this practice on the mineralogy of the clay fraction. This study aimed to evaluate the clay-fraction mineralogy of two subtropical soils, fertilized with organic residues in long-term no-tillage systems. An Alfisol fertilized with 0, 40, and 80 m3 ha-1 yr-1 pig slurry was evaluated for eight years, and an Oxisol with 0, 8, and 16 Mg ha-1 of wood shavings with pig slurry, for six years. Soil samples from the layers 0.00-0.04, 0.04-0.08, and 0.16-0.20 m were collected and subjected to chemical extractions with DCB and oxalate, X-ray diffractometry, and thermal analysis. No...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil management; Soil minerals; Pig slurry.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100413
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