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Microorganisms and Soil Aggregate Stability
1985A soil aggregate has been defined as “a naturally occurring cluster or group of soil particles in which the forces holding the particles together are much stronger than the forces between adjacent aggregates” (Martin et al., 1955). The terms soil structure and soil aggregation are often used synonymously, but soil aggregates are the basic units of soil
J. M. Lynch, Elaine Bragg
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Wet Aggregate Stability of Some Botswana Soil Profiles
Arid Land Research and Management, 2006ABSTRACT During intense and short rainfall events, important losses of fertility are expected as a result of erosion in drylands because the nutrient pools are concentrated in the topsoil. Therefore, we evaluated the kinetics of aggregate stability in some Haplargids and Torripsamments in Botswana as it represents a resistance factor against losses of ...
BONIFACIO, Eleonora +3 more
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Soil Aggregates — Formation and Stability
1990The first requirement for the efficient production of most agricultural crops is that sufficient water derived from rainfall or irrigation is accepted by the soil. Otherwise, water is not only wasted, but erosion may result. The second requirement for crops other than rice is that waterlogging does not occur, and that soil aggregates at field capacity ...
W. W. Emerson, D. J. Greenland
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Potassium influence on soil aggregate stability
Communications in Soil Science and Plant Analysis, 2018Improving soil aggregate stability (SAS) is important for crop production and environmental protection.
Yotsapon Phocharoen +3 more
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Soil colloids affect the aggregation and stability of biochar colloids
Science of The Total Environment, 2021The stability of biochar colloids plays an important role in the transport and fate of contaminants and nutrients in soil. This study aimed to investigate the effects of main soil components, kaolin (Kao), goethite (Goe), and humic acid (HA) colloids on the aggregation kinetics of biochar colloids derived from dairy manure (DM), sewage sludge (SS), and
Xiangyang, Gui +6 more
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Effect of aggregate stability on soil compaction
Soil and Tillage Research, 1991Abstract Investigations of three differently textured and structured soils showed that soil compaction is a function of texture, structure, matric water potential and type and intensity of loading. Time-dependent consolidation and shear experiments revealed that fine-textured soil is more compressible than heavier soil.
Baumgartl, Th., Horn, R.
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Stability of structural aggregates of dry soil
Australian Journal of Agricultural Research, 1950The stability of natural aggregates of dry soil has been examined by a drop-shatter method similar to that used in coal technology, The median size was determined after dropping from heights of 30, 60, 120, and 240 cm. The dropping procedure subdivides aggregates along surfaces of weakness into smaller natural units.
TJ Marshall, JP Quirk
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The role of microorganisms in the stabilization of soil aggregates
Soil Biology and Biochemistry, 1971Abstract The maintenance of water-stability of soil aggregates bound by different chemicalbinding agents produced in situ by pure cultures of microorganisms and by an indigenous soil microflora was assessed by wet-sieve analysis. Seven fungi, six streptomycetes, and five bacteria produced binding materials in artificial aggregates of Miami silt ...
R.B. Aspiras +3 more
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Stabilizing Soil Aggregates with Phosphoric Acid
Soil Science Society of America Journal, 1976Abstract Four P‐containing fertilizer materials (H 3 PO 4 , liquid and dry ammonium polyphosphate, and triple superphosphate) were compared for ability to increase water stability of aggregates in an acid soil.
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Emerging threats to the stability of soil aggregates
2021Soil aggregates are clusters of soil particles, supporting the soil physical structure. Soil aggregation is key to the functions of ecosystem, including aeration, water infiltration and storage, nutrient cycling, and the pore system. This doctoral work investigates the effects of threats on the stability of soil aggregates.
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