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The changes of mineral nitrogen content in clay loam Cambisol in sustainable and organic agriculture
clay loam organic and sustainable farming system winter wheat straw green manure
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2010/1/19
The changes of mineral nitrogen content in clay loam Cambisol in sustainable and organic agriculture.
Soil water, solute storage and drainage in a deeply loosened, heavy-clay soil of southern Romania
leaching internal drainage soil water flux
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2008/12/2
One year after draining and extensively loosening heavy-clay soils, irrigation water was sprinkled over it daily for 10 h for a 3-day period, using a 10 mm h-1 rate, perpendicularly over plastic drain...
Crack tortuosity in swelling clay soils
swelling soil crack network crack connectedness planar tortuosity spatial tortuosity
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2008/11/26
A relationship between the planar and spatial tortuosities of a statistically isotropic crack network in a clay soil is derived from the fact that connected cracks outline peds and are their boundarie...
Crack width, cross-section area, and volume in swelling clay soils
geometry swelling soils shrinkage cracks
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2008/11/26
A model is presented for prediction of crack network geometry in clay soils. The starting point is the similarity between a crack network in rocks and that in soils, and, hence, principles of multiple...
Interaction of Pb2+ and Zn2+ salts with clay minerals**
Pb Zn clay minerals electron microscopy X-ray diffraction
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2008/11/24
Multiple mica-like monocrystals, 3 mm in size, are formed when smectite is saturated with 1N Pb(CH3COO)2 solution. The appearance of neoformations meta-stable to water may be attributed to inner-spher...
Some factors affecting clay dispersion and aggregate stability in selected soils of Nigeria
aggregate stability aggregated clay chemical extractants tropics water-dispersible clay
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2008/11/24
Using 22 soil samples from Nigeria, comprising Alfisols, Entisols, Inceptisols, Ultisols and Vertisols with 77- 676 g kg-1 clay, we studied the effect of various treatments on clay dispersion. Aggrega...
Physical-chemical and biological parameters of two neighbouring post-exploitation clay-pits
post-exploitation clay-pits physical-chemical parameters aquatic vegetation cover plankton structure
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2008/11/14
The aim of the study was to determine the physical-chemical and biological (aquatic vegetation cover and plankton structure) parameters of two post-exploitation clay-pits. As a result of the study it ...
Shrinkage properties of three clay materials at different temperatures
clay, loam landfill capping Proctor test shrinkage potentia
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2008/11/12
This experimental study was performed to obtain a relationship between moisture content and shrinkage potential at different temperatures of three soil materials (quaternary clay and granite loam from...