Modeling of Saturated Hydraulic Conductivity and Mean Soil Pore Diameter in an Alluvial Loamy Soil

Hammad, S. A.; Zehery, T. M. El; Soliman, E. A.

doi:10.21608/jssae.2013.51182

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…In addition, the OM content of loamy soil (0.55%) is less than clay loamy soil (0.96%) . These results are in harmony with the finding of Hanson et al, (1999) and Levy et al, (1999), Hammad et al, (2013) and Enas-Soliman (2018), they stated that the sodic soils are related with structural changes that greatly affect soils permeability. The high level of sodium in the soil leads to losses of structure that reduces the hydraulic conductivity.…”

Section: Soil Hydraulic Properties: Saturated Hydraulic Properties (K S )supporting

confidence: 90%

Benefits of Treated Rice Straw on Soil Hydraulic Properties under Saline-Sodic Irrigation Water

Soliman

Saleh

Hammad

2019

Journal of Soil Sciences and Agricultural Engineering

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Egypt is an arid country whose agricultural production depends entirely on irrigation, and it suffers from a severe shortage of fresh water resources. Reuse of agricultural wastewater is therefore inevitable, especially in the central and northern regions of the Egyptian Nile Delta. Recently, the addition of biochar is considered one of a climate-smart farming practice in sustainable agriculture. Therefore, a columns experiment was conducted at the laboratory of Soils Dept., Fac., Agric., Mansoura Unvi. to assess the role of treated rice straw on alleviating the adverse effects of irrigation by agricultural drainage water (low-quality water) on soil physical and hydraulic properties (water movement). The treatments of the experiment include two types of soil texture: (S 1 ) Clay loamy soil and (S 2 ) Loamy soil, two types of irrigation water: (I 1 ) Tap water and (I 2 ) Agricultural drainage water (severe salty and sodic) and two types of treated rice straw: (C 1 ) Rice straw compost (RSC) and (C 2 ) Rice straw compost biochar (RSCB), beside (C 0 ) Control. Results showed that applying both RSC and RSCB increased soil's resistance against negative effect of low-quality water, not only that, but it improves the soil physical and hydraulic properties. The addition of treated rice straw in particular RSCB caused an increase of the soil hydraulic properties i.e. saturated hydraulic conductivity ( Ks), unsaturated hydraulic conductivity K (θV) , specific fluid flux (q) and intrinsic permeability (k) as a resultofthepositivechangeinsoilbulkdensity(ρb),meanporediameter(d) and porosity (E). Based on these results, the two types of treated rice straw, especially RSCB could improve soil resistance against degradation caused by lowquality water irrigation through improving aggregation process, soil structure and water movement across soil matrix.

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Section: Soil Hydraulic Properties: Saturated Hydraulic Properties (K S )supporting

confidence: 90%

Benefits of Treated Rice Straw on Soil Hydraulic Properties under Saline-Sodic Irrigation Water

Soliman

Saleh

Hammad

2019

Journal of Soil Sciences and Agricultural Engineering

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“…Consequently, these solutes increase the sorption of water and the moisture contents of the chernozem soil. Also, and Hammad et al (2013) concluded that the structural degradation of soils is a function of both low salinity and high sodicity.…”

Section: Sorption Curve Of Soil Watermentioning

confidence: 99%

Changes of Water Retention in Rice Soil Amended with Organic Manures under ‎Irrigation by Saline and Sodic Water

Soliman

2018

Journal of Soil Sciences and Agricultural Engineering

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The quality of irrigation water may affect soil water retention properties, especially in arid areas such as Egypt. Evaluate such an impact plays a vital role in the achieving of effective development of soil and water maintenance and management practices. Therefore, a field trial was performed to evaluate the effects of irrigation water qualities and organic manures amendment on the soil water potential as a limiting factor of crop production. The treatments consisted of all possible combinations of three types of organic manures (2 t fed-1 rice straw compost, 5 t fed-1 farmyard manure (FYM), and 2 t fed-1 rice straw compost + 5 t fed-1 FYM) beside the control and three types of irrigation water differed in salinity (EC) and sodicity (SAR Adj), that were industrial wastewater, agricultural drainage water and freshwater. The investigated treatments influenced the shape of the soil-water characteristic curves (sorption and desorption) and had considerable effects on the aggregate stability as indicated by the patterns of hysteresis phenomena. The variation of irrigation water quality had the strongest effect on modifying soil properties, especially agricultural drainage water having the highest SAR Adj then industrial wastewater with the highest EC. In addition, mixing compost with FYM is considered the best improver for soil irrigated with poor quality water under these experimental conditions.

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Modeling of Saturated Hydraulic Conductivity and Mean Soil Pore Diameter in an Alluvial Loamy Soil

Cited by 2 publications

References 9 publications

Benefits of Treated Rice Straw on Soil Hydraulic Properties under Saline-Sodic Irrigation Water

Benefits of Treated Rice Straw on Soil Hydraulic Properties under Saline-Sodic Irrigation Water

Changes of Water Retention in Rice Soil Amended with Organic Manures under ‎Irrigation by Saline and Sodic Water

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