چکیده:
In order to investigate the effects of compost and super absorbent on quality of soil, an experiment was carried out in Bu-Ali Sina University at 2013-2014. A randomized complete block design with six treatments and three replicates was employed. The treatments used included: three level of super absorbent (1, 2 and 4 ton per ha) and three level compost (0, 20 and 40 ton per ha). In this study, effects of compost and super absorbent were investigated on heavy metals concentration and pH in soil. The Results showed that the effect of treatments on heavy metals concentration (except Fe in block) and pH of the soil was statistically non- significant (p<0.01). Also, the interaction of treatments and block wasn’t significant (p<0.01) on pH and heavy metals concentration. The maximum of Fe, Zn, Cu and Mn concentrations were observed in treatments of 1 ton/ha super absorbent, 2 ton/ha super absorbent, 40 ton/ha compost and 20 ton/ha compost, 0 ton/ha compost, respectively. The maximum of pH values were also occurred in 40 ton/ha compost. The results show that the maximum concentrations between heavy metals belonged to Fe.
خلاصه ماشینی:
The Results showed that the effect of treatments on heavy metals concentration (except Fe in block) and pH of the soil was statistically non- significant (p Keyword: Compost, Heavy metals, pH, Soil, Super absorbent * Corresponding author: Atefe Noorali Email: Email: atefenoorali@ymail.
Analysis of variance of the treatments effects on concentrations of the examined elements average of squares Degrees Source pH Manganese Copper Zinc Iron of of freedom change (View the image of this page) **: At 1% level is significant, ns there is no significant difference Results and discussion Table 5 shows the statistical analysis of the applied treatments on heavy metals concentrations and pH of the examined soil.
The concentration of heavy metals (iron, zinc, copper and manganese) as well as the pH of the used soil (before adding compost and superabsorbent) are presented in Table 4.
The concentration of heavy metals (iron, zinc, copper and manganese) as well as the pH of the used soil (before adding compost and superabsorbent) are presented in Table 4.
The results of this study showed that superabsorbent application increased the concentrations of iron, zinc, copper and manganese in soil in comparison with control treatment.
4 kg of superabsorbent treatments in each plot, a magnitude of metals was observed in same order: iron> zinc> manganese> copper.
Figures 1-5 show the variation of the applied treatments during different irrigation periods in the present study conditions on the concentrations of iron, zinc, copper, manganese and pH in soil medium (saturated extract).