The study of the strength reconstituted and stabilised soft soils is very important in geotechnical engineering. soil particles, such as clay, sand, silt play roles determining behaviour soils. clay sand particles are unique; however, lie a transitional form between clay. Therefore, this paper seeks to investigate (a) effect contents on soils; (b) content cement-stabilised (c) microstructure sp...

T h e shadowing theor~j has been widely used to account fi~r the hot-.spot effect fi~r the canopy and soil. However, it is not valid for soils' that are composed of fine particles and &~ not have weU-defined shadows. The coherent backseattering theorTj is used in this study to calculate both the nuzgnitude and the angular width of the hotspot peak .fi~r clay and silt soils'. The .soil hot-spot ...

development of argillic horizon in loess derived soils under xeric and udic soil moisture regimes was studied in golestan province. soils were classified as hapludalfs and haploxeralfs. high leaching, stability of the surface, forest vegetation,structure and well drainage conditions provide appropriate conditions for clay migration through the profile and formation of argillic horizons. in the ...

application of phosphorus (p) fertilizers as solid or liquid fertilizers to soils leads to re-actions of orthophosphate ions with various soil components which remove p from the so-lution phase and convert it to less soluble phosphates. this study was aimed at determin-ing soil properties that affect the rate of phosphate retention in 28 contrasting calcareous soils from different geographical ...

Vegetated buffer strips were evaluated for their ability to remove waterborne Cryptosporidium parvum from surface and shallow subsurface flow during simulated rainfall rates of 15 or 40 mm/h for 4 h. Log(10) reductions for spiked C. parvum oocysts ranged from 1.0 to 3.1 per m of vegetated buffer, with buffers set at 5 to 20% slope, 85 to 99% fescue cover, soil textures of either silty clay (19:...

soil. Planting of the crop over this low density slot is critical. These soils occur in the USA, primarily in the Using deep tillage to alleviate the adverse effects of deleterious soil Coastal Plains, and in other regions to a minor extent physical properties has been tried many times. Consistent economic returns have been reported for in-the-row subsoiling of loamy sand (Buol, 1973). and coar...

Field and laboratory analyses of soils on 11 well-dated fluvisil terraces spanning the past 0.5 m.y. demonstrate that a threshold governs changes in several morphological and chemical characteristics of increasingly older soils. Correlations with respect to time among iron species, soil morphology, and soil silt and clay demonstrate that the chronosequence at Cajon Pass reflects primarily an ev...

The sorption of the allelochemical scopoletin (7-hydroxy-6-methoxycoumarin) was studied in eight agricultural soils and different model sorbents. We also determined its degradation selected related results to expression phytotoxicity soil towards two plant species, Eruca vesicaria Hordeum vulgaris. Scopoletin sorbed a greater extent acid than alkaline soils. Correlations with properties indicat...