Soils - Compaction
ARTIGO_Diagnosing, ameliorating, and monitoring soil compaction in no-till brazilian soils
... NT compaction were effective at improving soil physical properties, which in turn increased soybean yield, even when rainfall and therefore water supply were ...clay soils under NT management have not ...
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Soil compaction caused by harvest and logging operations in eucalyptus forests in coarse-textured soils from northeastern Brazil
... Soil load bearing capacity varied significantly between the evaluated soils. In the BA horizon, load bearing capacity followed Haplorthod > Hapludult-2 > Hapludult-1. In the B horizon, the Hapludults did not ...
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Soil compaction during harvest operations in five tropical soils with different textures under eucalyptus forests
... to compaction and the amount of compaction caused by each forest harvest operation differs according to a number of factors (such as soil strength, soil texture, kind of equipment, traffic intensity, among ...
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Continuous evaluation of the stiffness of stabilized soils since compaction: enhancements to the EMM-ARM methodology
... of soils may be achieved by its mechanical compaction or through the addition of chemical additives such as cement or ...of soils has become widely used because it allows customized control of the ...
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Soil compaction effect on black oat yield in Santa Catarina, Brazil
... four soils with five different degrees of ...Soil compaction changed the physical properties of ...tested soils, macroporosity and total porosity decreased, more ...
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Soil Compaction in Sugarcane Fields Induced by Mechanization
... Bulk density is dependent on soil texture. Sandy soils have relatively high bulk density since the total pore space in sand is less than that of silt or clay. NRCS Soil Quality Institute (2003) reported that bulk ...
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Guar root and shoot growth as affected by soil compaction
... that compaction promotes root thickening, because of morphophysiological changes in the radicle system after entering the compacted layer (Ramos et ...compacted soils was observed by Pfeifer et ...
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World's soils are under threat
... About 200 soil scientists from 60 countries contributed directly to the report. Their assessment has synthesized the scientific knowledge embodied in more than 2000 peer- reviewed scientific publications. The report ...
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COMPACTION OF AN OXISOL AND CHEMICAL COMPOSITION OF PALISADEGRASS
... in soils under pastoral land use, and can make livestock systems ...soil compaction on yield and quality of palisade (Urochloa brizantha ...soil compaction: no compaction (NC), slight ...
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MICROBIAL ALTERATIONS OF THE SOIL INFLUENCED BY INDUCED COMPACTION
... soil compaction, root growth increased in the 0–10 m layer, although corn yields decreased (Freddi et ...high-density soils can result in N loss due to the dessimilatory nitrate reduction and decrease N ...
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SOIL COMPACTION AND THE STABILITY OF LEVEES OF AQUACULTURE PONDS
... Low permeability coefficients indicate that voids in the soils are as small as the size of the particles in the soil samples, as evidenced by the high clay content (Figure 1) (Terzaghi et al., 1996, Massad, 2010; ...
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Soil susceptibility to compaction under use conditions in southern Brazil
... the soils are similar in terms of load-bearing and susceptibility to compaction, joint analysis of soils was then ...the soils, joint analysis was conducted, since this ratio was within the ...
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ESTABLISHMENT OF XARAÉS AND MARANDU GRASSES UNDER LEVELS OF SOIL COMPACTION
... Cerrado soils under grazing, changes occur in physical attributes, such as increased density, decreasing on the size of water stable aggregates, and macroporosity ...of compaction on the establishment of ...
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Compaction quality control on site of earthworks - A comparative study
... field compaction obtained by the SCT and OVM with the results from the nuclear density ...soil compaction considered in this work where the density, water content and degree of ...the soils were ...
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LEVELS OF INDUCED PRESSURE AND COMPACTION AS
... of soils and environments subjected to human impact (MENDES et ...soil compaction have prompted researchers to use several physical and mechanical properties to quantify the effect of compaction on ...
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Soil Compaction Due to Wood Harvesting Traffic at Different Extraction Distances
... Håkansson I, Voorhees WB. Soil compaction. In: Lal R, Blum WEH, Valentin C, Stewart BA. Methods for assessment of soil degradation. Boca Raton: Lewis; 1997. Jesus GL, Silva IR, Almeida LFJ, Santos MA, Leite FP, ...
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Incomplete vertical root fracture associated with lateral compaction technique: a microscopic analysis
... lateral compaction group, the teeth were filled by using a size C spreader and FM gutta-percha cones controlling the load to a maximum of 2 ...lateral compaction group in comparison with prepared group (not ...
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EXCHANGEABLE ALUMINUM EVALUATION IN ACID SOILS
... ABSTRACT: One of the main factors limiting agricultural production in tropical climate regions is mainly related to the presence of exchangeable aluminum (Al 3+ ) in highly weathered acid soils. Four methods of Al ...
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Root Distribution of Peach Rootstocks Affected by Soil Compaction and Acidity
... of ‘Maciel’ peach, grafted onto ‘Okinawa’ and ‘Nemaguard’ rootstock, at 1.5, 2.0, and 2.5 m from the trunk, and at every 0.10 m, up to a depth of 0.50 m. The soil samples were sieved and the roots washed. A subsample was ...
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Zinc adsorption in highly weathered soils
... The Gibbs free energy (∆G) is a measure of the extension or force that guides the adsorption reaction (Soares et al., 2005). The ∆G values were negative and confirmed the feasibility and spontaneity of Zn adsorption ...
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