ROLE OF SOME ORGANIC AND MINERALS MATERIALS ON REMOVALS OF HEAVY METALS OF SEWAGE AND ITS EFFECTS ON GROWTH OF CORN IN TOW CALCAREOUS SOILS.
ANBAR JOURNAL OF AGRICULTURAL SCIENCES,
2018, Volume 16, Issue 1, Pages 748-765
AbstractA study was conducted in the Collage of Agriculture/University of Baghdad-Abugraib the alternative location for the University of Anbar during the spring 2017, to evaluate the efficiency of some materials organic and mineral in treating sewage from heavy metals and its effect on some soil characters and growth of corn plants (Zea Mays L.). Eexperiment was done using tow types soil clay loam and loam using pots to study the effect of using treated sewage with Phosphate rock, Bentonite, Peat moss and Soil and the untreated sewage and river water. Treated sewage prepared by making columns of materials used for treatment with 40 cm depth, then sewage mixed with heavy metals (concentration of 10 mg. L-1) poured through the column from the top and then filtered water collected and used to water corn plants where pots were watered according to treatments. At the end of the experiment some phenotypic growth indicators were measured and heavy metals concentrations measured in green leaves and in soil. experiment results showed Plant height was increased in both soils when irrigated with sewage treated with phosphate rocks and sewage treated with organic matter and the percent was 20.85 and 6.62 for both soils compared to untreated sewage. Significant difference in plant height recorded for plants irrigated with sewage treated with phosphate rocks by percent of 7.54% compared with plants irrigated with river water Plant dry weight was increased for maize plants watered using sewage treated with phosphate rocks, peat moss, bentonite and soil and the rate of increase was 45.61, 12.51, 17.77 and 4.68 % respectively compared to the dry weight when untreated sewage used. Cadmium concentration was increased as a result of using untreated sewage for irrigation compared to cadmium concentration in the soil. Differences in (Cd, Pb and Cu) concentration between treatments where it was reduced in soil when watered with sewage treated by phosphate rock. Cadmium, couplet and Copper concentration in leaves reduced by irrigating using sewage treated with phosphate rock, bentonite, peat moss and soil compared to irrigation treatment with untreated sewage for both soils.
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