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Showing Abstract of Effects of Maunicipal-Compost Residual on the Corn Yield and Heavy Metals Concentration of the Soil

 
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[ Downloads: 0 | Abstract Viewed: 99 | Pages: 10 ]
Title

Effects of Maunicipal-Compost Residual on the Corn Yield and Heavy Metals Concentration of the Soil

Topic: Waste Published Year: 2007
Presentation: Poster
 Published in:

[ 1st Conference of Environmental Engineering ]

Original Language: Persian Full Text Size: Not Available

 

Abstract of the Article

 

Note: English CIVILICA is in its Trial Period so Full Texts can not be provided! Persian users can download it here

Download This article in PDF format Effects of Maunicipal-Compost Residual on the Corn Yield and Heavy Metals Concentration of the Soil

 

Authors:
[ A. Gandomkar ] -
[ Rezae ] - Members of Scientific staff of Esfahan Agricultural Research Center

 

Abstract:

The moisture content of urban soild wastes in Iran is very high. A large volume of Leacahate is , therefore, produced in the process of converting these wastes into compost.The leachate contains relatively large amounts of organic matter , plant nutrients , soluble salts as well as small amounts of some heavy metals.The effects of urban solid waste leachate on growth and yield of corn and heavy metals and nutrients concentrations in plant as well as the effects of leachate residual on soil were studied in field trial conducted in one site (Zeinal ) in central Iran(Isfahan).The treatments included applications of 0 , 400 and 800 metric tons of leachate/ha as the main plots and two leaching treatments (0 and 15 cm leaching ) as the sub-plots in a split plot design.Application of the leachate decreased crust formation and greatly improved germination and growth of corn.Biological yield of corn increased from 6.8 to 11.4 and 8.9 tons/ha for 400 and 800 tons/ha of leachate applications (as compared to the control field ),respectively.Leaching increased corn yield.Uptakes of N , P , K , Fe , Mn , Zn and Cu by corn increased as a result of leachate application.Concentrations of Fe , Mo , Zn , Cu and Cr in plant tissues also increased but no toxic symptoms were observed in plants.Concentrations of Pb, Cd, Cr, Co , and Ni in aerial tissues of corn did not increase as a result of leachate application.The residual effects of leachate application on soil were a decrease in pH and coresponding increases in organic matter content, in electrical conductivity and in available amounts of N,P,K, Fe , Mn , Zn , and Cu.It is concluded that compost leachate has the potential to be used as an organic liquid fertilizer and soil amendment to improve soil productivity at least for a limited period of time.

 

Keywords:

corn composition, yield, heavy metals, soil
 

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