Abstract
Parameters such as EC, Sodium percent (Na%), Sodium Adsorption Ratio
(SAR) and Standard diagrams (Wilcox and US salinity) were used in the present
study to assess the suitability of water for irrigation purposes near the general
company of phosphate in al-Qaim city in the province of Al-Anbar, Iraq. Chemical
parameter such as pH, EC, Ca2
2+, Mg2+, Na+, K+, Cl- , SO4
2-, NO3
2- HCO3
-, and PO4
2-,
were analyzed. Based on these analyses Sodium Adsorption Ratio (SAR) and Sodium
percent (Na %) was calculated. The analytical data were plotted on the Standard
diagrams (Wilcox, and US salinity diagram). According to the Wilcox diagram the
groundwater of the study area is doubtful to unsuitable quality in 40% of the water
sample, good to permissible quality in 33%, permissible to doubtful quality in 6% and
21% of the water sample out of the limit of diagram because of the high EC. The plot
of analytical data on the USLL, diagram shows that the salinity hazard in 53.3% and
46.7% of water samples is regarded as high and very high respectively. Such waters
are not suitable for irrigation under normal condition and further action for salinity
control is required in remediation such problem. Sodium content in 73.3% of water
samples collected is regarded as low and can be used for irrigation in almost all soils.
Main Subjects
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