Extractability And Bioavailability Of Cd In Soil Treated With Cd-enriched Sewage Sludge
Publish place: First International Conference and Fourth National Conference on Organic Recycling in Agriculture
Publish Year: 1390
Type: Conference paper
Language: English
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Document National Code:
NCRRORRA04_048
Index date: 8 January 2013
Extractability And Bioavailability Of Cd In Soil Treated With Cd-enriched Sewage Sludge abstract
The effect incubation time and application of Cd-emiched sewage sludge on Cd availability in soil and bioavailability to rice (0 1yza Sativa L.) were investigated. Soil was treated with 20 g kg -1 of sewage sludge and it had been emiched with different amounts of CdS04 to obtain Cd concentrations ranging from 10 to 90 mg Cd kg - 1 . Soil was extracted with DTP A after 1 and 120 days. Availability of Cd in soil and Cd concentration in rice shoots at two incubation times, increased with increasing levels of Cd in soil. Incubation time had a significant effect on Cd concentration in rice it was significantly higher at 120 days of incubation than at first day of incubation probably due to degradation of organic matter and release of the Cd in soil. Shoot Cd concentrations con elated with DTP A -extractable Cd in the soil. Therefore, DTP A -extractableCd could be successful in predicting Cd bioavailability and toxicity in rice plant
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Extractability And Bioavailability Of Cd In Soil Treated With Cd-enriched Sewage Sludge authors
S Safarzadeh ShirazI
PhD. Student, Prof., Prof., and Assist. Prof, respectively, College of agriculture, Shiraz
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