Benefits of Treated Rice Straw on Soil Hydraulic Properties under Saline-Sodic Irrigation Water | ||||
| Journal of Soil Sciences and Agricultural Engineering | ||||
| Article 7, Volume 10, Issue 7, July 2019, Page 415-421 PDF (905.43 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jssae.2019.53687 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Enas M. Soliman; M. I. Saleh; S. A. Hammad | ||||
| Soils Dept., Fac. Agric., Mansoura Univ., Mansoura, Egypt | ||||
| Abstract | ||||
| 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: (S1) Clay loamy soil and (S2) Loamy soil, two types of irrigation water: (I1) Tap water and (I2) Agricultural drainage water (severe salty and sodic) and two types of treated rice straw: (C1) Rice straw compost (RSC) and (C2) Rice straw compost biochar (RSCB), beside (C0) 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 result of the positive change in soil bulk density (ρb), mean pore diameter (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 low-quality water irrigation through improving aggregation process, soil structure and water movement across soil matrix. | ||||
| Keywords | ||||
| treated rice straw; Agricultural drainage water; Soil texture; soil hydraulic properties; mean pore diameter | ||||
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