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Soil compaction and eucalyptus growth in response to forwarder traffic intensity and load Rev. Bras. Ciênc. Solo
Silva,Sérgio Ricardo da; Barros,Nairam Félix de; Costa,Liovando Marciano da; Leite,Fernando Palha.
During timber exploitation in forest stands harvesting machines pass repeatedly along the same track and can cause soil compaction, which leads to soil erosion and restricted tree root growth. The level of soil compaction depends on the number of passes and weight of the wood load. This paper aimed to evaluate soil compaction and eucalyptus growth as affected by the number of passes and wood load of a forwarder. The study was carried out in Santa Maria de Itabira county, Minas Gerais State - Brazil, on a seven-year-old eucalyptus stand planted on an Oxisol. The trees were felled by chainsaw and manually removed. Plots of 144 m² (four rows 12 m long in a 3 x 2 m spacing) were then marked off for the conduction of two trials. The first tested the traffic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil bulk density; Water-stable aggregates; Soil penetration resistance; Porosity; Soil organic carbon; Infiltration.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832008000300002
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Soil quality indicators under management systems in a Quilombola community in the Brazilian Cerrado Scientia Agricola
Silva,Antonio Marcos Miranda; Ramos,Maria Lucrecia Gerosa; Nascimento,Robervone Severina de Melo Pereira do; Silva,Alberto do Nascimento; Silva,Stefany Braz; Cardoso,Elke Jurandy Bran Nogueira; Paula,Alessandra Monteiro de.
ABSTRACT: Soil management systems exert different effects on soil attributes, especially on the organic matter content, and, consequently, the soil aggregation. The aim of this study was to evaluate the impact of different land uses practiced by quilombola family farmers on water stable aggregates, glomalin and organic carbon in soil aggregates. Soil samples were collected at depths of 0-10 and 10-20 cm from areas cultivated under the following management systems: 1) conventional corn plantation (MA), 2) cultivation of citrus trees intercropped with annual crops (AC) (a conservationist approach), 3) pasture of Brachiaria (Urochloa spp.) (PA), and, as reference, an area of the Cerrado (CR) free of any anthropogenic interference. The studied areas were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rhodic Hapludox; Water-stable aggregates; Soil protein; Quilombo.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001600518
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