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| Andrade,Maria Luiza de Carvalho; Tassinari,Diego; Dias Junior,Moacir de Souza; Martins,Ricardo Previdente; Rocha,Wellington Willian; Souza,Zélio Resende de. |
| ABSTRACT Planted forests occupy more than 6.5 million ha in Brazil, where harvest and logging operations are performed with increasingly heavier machinery, increasing the risk of soil compaction. Soil compaction can be avoided if soil load bearing capacity is not exceeded, what makes it important to assess both the soil strength and the impact of different operations. The aim of this study was to evaluate the load bearing capacity of some coarse textured soils (two Hapludult and one Haplorthod) in two soil horizons (BA and B), from northeastern Brazil; and to assess the impact of harvest and logging operations performed with harvester and forwarder. Although the Haplorthod presented higher load bearing capacity in both the BA horizon (for the whole... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Harvester; Forwarder; Precompression stress; Soil load bearing capacity.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200191 |
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| Carvalho,Rita de Cássia Ribeiro; Rocha,Wellington Willian; Pinto,José Cardoso; Pires,Bruno da Silva; Dias Junior,Moacir de Souza; Nunes,Ayeska Hubner Braga. |
| Pasture productivity can drop due to soil compaction caused by animal trampling. Physical and mechanical alterations are therefore extremely important indicators for pasture management. The objective of this research was to: draw and evaluate the Mohr failure line of a Red Yellow Latossol under different pasture cycles and natural forest; calculate apparent cohesion; observe possible physical alterations in this soil; and propose a correction factor for stocking rates based on shear strength properties. This study was conducted between March/2006 and March/2007 on the Experimental Farm of Fundação de Ensino Superior de Passos, in Passos, state of Minas Gerais. The total study area covered 6 ha, of which 2 ha were irrigated pasture, 2 ha non-irrigated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil compaction; Pasture; Animal trampling. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300004 |
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| Souza,Igor Alexandre de; Ribeiro,Karina Guimarães; Rocha,Wellington Willian; Pereira,Odilon Gomes; Cecon,Paulo Roberto. |
| The physical properties and fertility of the soil are important factors in the formation and establishment of pasture. Changes in physical properties affect the movement of water, air, nutrients and roots, which, in turn, affect the productivity and longevity of pastures. The objective of this study was to evaluate the physical properties of the soil and the dry matter yield of a pasture with signalgrass cv. Basilisk (Brachiaria decumbens cv. Basilisk), fertilized with increasing nitrogen doses (N), on a dystrophic Red-Yellow Latosol. The experiment was conducted on the Fazenda Rio Manso of the Universidade Federal dos Vales do Jequitinhonha e Mucuri, in Couto de Magalhães de Minas, State of Minas Gerais, Brazil. To evaluate the annual forage yield, a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pre-consolidation pressure; Soil bulk density; Total pore volume; Void index. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000600011 |
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| Neiva Júnior,Eudes; Rocha,Wellington Willian; Pires,Bruno Silva; Farnezi,Múcio Mágno de Melo; Dias Junior,Moacir de Souza; Freitas,Danilo Fernandes Borges de; Silva,Enilson de Barros; Carvalho,Gianniini Alexsandra de Oliveira. |
| Soil compaction is one of the main degradation causes, provoked by inappropriate agricultural practices that override the limitations of the soil physical properties. Preconsolidation pressure and penetration resistance have proved effective as alternative to assess and identify soil compaction. Based on the interpretation of these physico-mechanical parameters, compaction can be prevented with a better adjusted soil management. This study was performed to generate preconsolidation pressure and penetration resistance models for Latososlo Vermelho-Amarelo distrófico (Oxisol) under various managements and uses; and evaluate which of these would lead to degradation or degradation susceptibility. The study was carried out in Curvelo, MG. Two managements and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil compaction; Sheep grazing; No-tillage system; Atlantic rainforest. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000100086 |
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