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Paper Information

Journal:   JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)   MARCH-APRIL 2012 , Volume 26 , Number 1; Page(s) 65 To 72.
 
Paper: 

SALINITY AND SODICITY EFFECTS OF IRRIGATION WATER ON SOIL PHYSICAL QUALITY CRITERIA

 
 
Author(s):  GHAFARI H.*, NEYSHABOURI M.R.
 
* SOIL SCIENCE DEPARTMENT, FACULTY OF AGRICULTURE, TABRIZ UNIVERSITY
 
Abstract: 

Least limiting water range (LLWR), a proposed soil physical quality index, is the range of soil water content at which plant growth is least limited by water potential, aeration and soil mechanical resistance. The slope of the soil water retention curve at its inflection point (Si) is also considered as a soil physical quality index which controls important soil physical behaviors. The purpose of this study was to assess the effects of electrical conductivity (EC) and sodium adsorption ratio (SAR) of the prepared solutions as irrigation water on LLWR and Si in two clay loam and sandy loam soils under laboratory conditions. The treatments consisted of applying irrigation waters with three levels of EC (0.5, 4 and 10 dS m-1) and four levels of SAR (1, 5, 15 and 25). Soil columns were arranged and irrigated with the prepared solution for 12 weeks during six wetting and drying cycles. At the end of this period LLWR, Si and soil aggregate stability indices including MWD, WAS, DC and saturated hydraulic conductivity (KS) were measured. Analysis of variance showed that the effect of soil texture, SAR and EC on LLWR was significant (P£0.01) and increase in SAR and EC lead to decrease in LLWR. Increase in SAR from 1 to 25 resulted significant (P£0.01) decrease in Si index while Si remained unaltered by EC of the irrigation water. DC, WAS and Ks than two indicators LLWR and Si most affected by irrigation water EC and SAR.

 
Keyword(s): LEAST LIMITING WATER RANGE, SOIL PHYSICAL QUALITY, WATER RETENTION CURVE, SOIL AGGREGATE STABILITY
 
 
References: 
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Citations: 
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+ Click to Cite.
APA: Copy

GHAFARI, H., & NEYSHABOURI, M. (2012). SALINITY AND SODICITY EFFECTS OF IRRIGATION WATER ON SOIL PHYSICAL QUALITY CRITERIA. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), 26(1), 65-72. https://www.sid.ir/en/journal/ViewPaper.aspx?id=271051



Vancouver: Copy

GHAFARI H., NEYSHABOURI M.R.. SALINITY AND SODICITY EFFECTS OF IRRIGATION WATER ON SOIL PHYSICAL QUALITY CRITERIA. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY). 2012 [cited 2021August06];26(1):65-72. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=271051



IEEE: Copy

GHAFARI, H., NEYSHABOURI, M., 2012. SALINITY AND SODICITY EFFECTS OF IRRIGATION WATER ON SOIL PHYSICAL QUALITY CRITERIA. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), [online] 26(1), pp.65-72. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=271051.



 
 
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