Estimation of Saturated Hydraulic Conductivity of Soils From Particle Size Distribution and Bulk Density Data

1992 ◽  
Vol 35 (2) ◽  
pp. 557-560 ◽  
Author(s):  
J. D. Jabro
Keyword(s):  
Particle Size ◽  
Hydraulic Conductivity ◽  
Particle Size Distribution ◽  
Bulk Density ◽  
Size Distribution ◽  
Saturated Hydraulic Conductivity ◽  
Density Data

scholarly journals Saturated Hydraulic Conductivity and Textural Heterogeneity of Soils

2017 ◽  
Author(s):  
Carlos García-Gutiérrez ◽  
Yakov Pachepsky ◽  
Miguel Ángel Martín
Keyword(s):  
Particle Size ◽  
Hydraulic Conductivity ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Information Entropy ◽  
Fine Sand ◽  
Saturated Hydraulic Conductivity ◽  
Coarse Particles ◽  
Heterogeneity Parameter

Abstract. Saturated hydraulic conductivity Ksat is an important soil parameter that highly depends on soil's particle size distribution (PSD). The nature of this dependency is explored in this work in two ways, (1) by using the Information Entropy as a heterogeneity parameter of the PSD and (2) using descriptions of PSD in forms of textural triplets, different than the usual description in terms of the triplet of sand, silt and clay contents. The power of this parameter, as a descriptor of Ksat and log(Ksat) , was tested on a database of > 19 K soils. We found coefficients of determination of up to 0.977 for log(Ksat) using a triplet that combines very coarse, coarse, medium and fine sand as coarse particles, very fine sand as intermediate particles, and silt and clay as fines. The power of the correlation is analysed for different textural classes and different triplets. Overall, the use of textural triplets different than traditional, combined with IE, may provide a useful tool for predicting Ksat values.

Land Suitability Evaluation of The Wetland Soils of Obukiyo, Oju LGA of Benue State, Nigeria For Rice (Oryza Sativa) Production.

2019 ◽  
pp. 27-34
Keyword(s):  
Particle Size ◽  
Organic Matter ◽  
Hydraulic Conductivity ◽  
Particle Size Distribution ◽  
Bulk Density ◽  
Poultry Manure ◽  
Infiltration Rate ◽  
Saturated Hydraulic Conductivity ◽  
R Value ◽  
Water Repellence

The effect of different rates of poultry manure application on water characteris- tics of Oforola soils was studied. The different poultry manure rates were 0, 10, 20, and 30 t/ha, while the soil properties studied were particle size distribution, bulk density, porosity, organic matter, saturated hydraulic conductivity, volumet- ric water content, volumetric infiltration rate, sorptivity and water repellence in- dex. Data were subjected to multiple correlation (p = 0.05 and p = 0.01) and anal- ysis of variance (p = 0.05) using RCBD. The results show that the particle size distribution and water repellence index did not differ significantly among the different treatment rates. Soil porosity and organic matter were observed to in- crease with increasing treatment rate but were not significantly influenced by the different treatment rates. Bulk density was significantly influenced in the 30 t/ha treated plot. Both the saturated hydraulic conductivity and volumetric water con- tent were significantly influenced in the 20 and 30 t/ha treated plots, while both volumetric infiltration rate and sorptivity were significantly influenced in all the treated plots. The result of the correlation analysis showed that the treatments had positive influence (p = 0.01) on porosity (r = 0.982), organic matter (r = 0.967) and volumetric water content (r = 0.976) but negatively influenced (p = 0.01) bulk density (r = -0.982), saturated hydraulic conductivity (r = -0.989), volumet- ric infiltration rate (r = -0.990) and sorptivity (r = -0.994). Also, the treatments correlated positively but non-significantly with water repellence index (r value), which correlated negatively and significantly with the percent clay content (r value). Based on the findings, a further study is recommended to establish a standard and beneficial poultry manure rate that would enhance soil water char- acteristics for sustainable productivity. o improve the soil constraints to maintain and sustain the productivity of the soils.

Relationship between the Hydraulic Conductivity Function and the Particle-Size Distribution

2003 ◽  
Vol 67 (1) ◽  
pp. 373
Author(s):  
Lalit M. Arya ◽  
Feike J. Leij ◽  
Peter J. Shouse ◽  
Martinus Th. van Genuchten
Keyword(s):  
Particle Size ◽  
Hydraulic Conductivity ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Conductivity Function
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