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| Magalhães,Wellington de A.; Freddi,Onã da S.; Wruck,Flávio J.; Petter,Fabiano A.; Tavanti,Renan F. R.. |
| ABSTRACT Assess the physical quality of agricultural soils it is important to establish the management more adequate for plant growth. In this study, the soil water retention curve and S index as indicators of soil physical quality were evaluated in five integrated production systems in the following forestry arrangements: Eucalyptus in a single line, double line and triple line (Eucalyptus I, II and III respectively), Balsa in triple line and Teak triple line. The density and arrangement of forest trees influence the soil physical properties. Less soil water retention was observed in the Teak and Balsa wood systems in the layers 0-0.10 and 0.10-0.20 m. The field capacity, permanent wilting point, and available water were lower under the projection from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eucalyptus; Pore size distribution; Soil structure; ICLF. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000100064 |
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| Veiga,Milton da; Reinert,Dalvan José; Reichert,José Miguel; Kaiser,Douglas Rodrigo. |
| Soil tillage promotes changes in soil structure. The magnitude of the changes varies with the nature of the soil, tillage system and soil water content and decreases over time after tillage. The objective of this study was to evaluate short-term (one year period) and long-term (nine year period) effects of soil tillage and nutrient sources on some physical properties of a very clayey Hapludox. Five tillage systems were evaluated: no-till (NT), chisel plow + one secondary disking (CP), primary + two (secondary) diskings (CT), CT with burning of crop residues (CTb), and CT with removal of crop residues from the field (CTr), in combination with five nutrient sources: control without nutrient application (C); mineral fertilizers, according to technical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bulk density; Pore size distribution; Manure. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832008000400008 |
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| BACCHI,O.O.S.; REICHARDT,K.; VILLA NOVA,N.A.. |
| Fractal scaling has been applied to soils, both for void and solid phases, as an approach to characterize the porous arrangement, attempting to relate particle-size distribution to soil water retention and soil water dynamic properties. One important point of such an analysis is the assumption that the void space geometry of soils reflects its solid phase geometry, taking into account that soil pores are lined by the full range of particles, and that their fractal dimension, which expresses their tortuosity, could be evaluated by the fractal scaling of particle-size distribution. Other authors already concluded that although fractal scaling plays an important role in soil water retention and porosity, particle-size distribution alone is not sufficient to... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Fractal; Particle size distribution; Pore size distribution; Soil water retention; Soil hydraulic conductivity. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161996000200027 |
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