Other studies (Salehi et al., 2008; Ali et al., 2010; Hassan
et al., 2002; Mohammad and Ayadi, 2004) have shown that
the effect of one effluent may vary from crop to crop, depending
on differences in climate, vegetation, and social and cultural
conditions, as well as on the changes in the qualities of soils and
sewage among different regions and within different time periods
in one region.
Other studies (Salehi et al., 2008; Ali et al., 2010; Hassanet al., 2002; Mohammad and Ayadi, 2004) have shown thatthe effect of one effluent may vary from crop to crop, dependingon differences in climate, vegetation, and social and culturalconditions, as well as on the changes in the qualities of soils andsewage among different regions and within different time periodsin one region.
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