Changes in the physical properties of an Amazonian Inceptisol induced by tractor traffic

ABSTRACT With agricultural expansion in Amazonian regions, studies are needed to verify the effect of mechanization on the soils of the regions. This study aimed to assess soil physical attributes under different compaction conditions induced by tractor traffic on a soil of southern Amazonas State,...

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Autores principales:	Gomes,Romário Pimenta, Bergamin,Anderson Cristian, Silva,Laércio Santos, Campos,Milton César Costa, Cazetta,Jairo Osvaldo, Coelho,Anderson Prates, Souza,Edicarlos Damacena de
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2019
Materias:	Compaction mechanization multivariate analysis physical attributes
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000100103
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spelling	oai:scielo:S0718-583920190001001032019-02-19Changes in the physical properties of an Amazonian Inceptisol induced by tractor trafficGomes,Romário PimentaBergamin,Anderson CristianSilva,Laércio SantosCampos,Milton César CostaCazetta,Jairo OsvaldoCoelho,Anderson PratesSouza,Edicarlos Damacena de Compaction mechanization multivariate analysis physical attributes ABSTRACT With agricultural expansion in Amazonian regions, studies are needed to verify the effect of mechanization on the soils of the regions. This study aimed to assess soil physical attributes under different compaction conditions induced by tractor traffic on a soil of southern Amazonas State, Brazil. Treatments consisted of three compaction levels: conventional soil tillage without additional compaction (CT) and conventional soil tillage with additional compaction with four (CTc4) and eight tractor passes (CTc8). An intense increase in soil aggregate diameter was observed in the superficial soil layer (0.00-0.05 m) from four tractor passes, decreasing in the successive soil layers (0.05-0.20 m). Soil density increased up to a depth of 0.10 m. The reduced macroporosity and soil moisture on the soil surface (0.00-0.05 m) did not significantly alter soil microporosity in the different treatments. For the macroporosity, the 0.00-0.05 m layer was the most impaired, with a reduction of more than 50% for the treatments submitted to compaction (CTc4 and CTc8). The penetration resistance for the 0.00-0.05 m layer was increased by more than 150% between the treatment without compaction (CT = 0.88 MPa) and compaction (CTc4 = 2.25 MPa; CTc8 = 2.50 MPa). These results show a greater caution in the agricultural machinery management in Amazonian soils, which may be aggravated due to the intense water regime in the region.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.79 n.1 20192019-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000100103en10.4067/S0718-58392019000100103
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Compaction mechanization multivariate analysis physical attributes
spellingShingle	Compaction mechanization multivariate analysis physical attributes Gomes,Romário Pimenta Bergamin,Anderson Cristian Silva,Laércio Santos Campos,Milton César Costa Cazetta,Jairo Osvaldo Coelho,Anderson Prates Souza,Edicarlos Damacena de Changes in the physical properties of an Amazonian Inceptisol induced by tractor traffic
description	ABSTRACT With agricultural expansion in Amazonian regions, studies are needed to verify the effect of mechanization on the soils of the regions. This study aimed to assess soil physical attributes under different compaction conditions induced by tractor traffic on a soil of southern Amazonas State, Brazil. Treatments consisted of three compaction levels: conventional soil tillage without additional compaction (CT) and conventional soil tillage with additional compaction with four (CTc4) and eight tractor passes (CTc8). An intense increase in soil aggregate diameter was observed in the superficial soil layer (0.00-0.05 m) from four tractor passes, decreasing in the successive soil layers (0.05-0.20 m). Soil density increased up to a depth of 0.10 m. The reduced macroporosity and soil moisture on the soil surface (0.00-0.05 m) did not significantly alter soil microporosity in the different treatments. For the macroporosity, the 0.00-0.05 m layer was the most impaired, with a reduction of more than 50% for the treatments submitted to compaction (CTc4 and CTc8). The penetration resistance for the 0.00-0.05 m layer was increased by more than 150% between the treatment without compaction (CT = 0.88 MPa) and compaction (CTc4 = 2.25 MPa; CTc8 = 2.50 MPa). These results show a greater caution in the agricultural machinery management in Amazonian soils, which may be aggravated due to the intense water regime in the region.
author	Gomes,Romário Pimenta Bergamin,Anderson Cristian Silva,Laércio Santos Campos,Milton César Costa Cazetta,Jairo Osvaldo Coelho,Anderson Prates Souza,Edicarlos Damacena de
author_facet	Gomes,Romário Pimenta Bergamin,Anderson Cristian Silva,Laércio Santos Campos,Milton César Costa Cazetta,Jairo Osvaldo Coelho,Anderson Prates Souza,Edicarlos Damacena de
author_sort	Gomes,Romário Pimenta
title	Changes in the physical properties of an Amazonian Inceptisol induced by tractor traffic
title_short	Changes in the physical properties of an Amazonian Inceptisol induced by tractor traffic
title_full	Changes in the physical properties of an Amazonian Inceptisol induced by tractor traffic
title_fullStr	Changes in the physical properties of an Amazonian Inceptisol induced by tractor traffic
title_full_unstemmed	Changes in the physical properties of an Amazonian Inceptisol induced by tractor traffic
title_sort	changes in the physical properties of an amazonian inceptisol induced by tractor traffic
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000100103
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Changes in the physical properties of an Amazonian Inceptisol induced by tractor traffic

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