ORIGINAL RESEARCH
Effect of Modified Polyacrylamide
on Plant-Availability of Cd and Pb to Corn
in Polluted Soils
Hossein Shirani, Hadis Hosseini, Mohsen Hamidpour,
Mohammad Hossein Shamshiri
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Soil Science Department, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
Submission date: 2016-01-12
Acceptance date: 2016-01-24
Publication date: 2016-11-24
Pol. J. Environ. Stud. 2016;25(6):2575-2580
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ABSTRACT
We studied the effects of modified polyacrylamide (MPAM) on plant-uptake of Cd and Pb in two
agricultural soils of different textures that had been contaminated simultaneously with Cd and Pb. In a pot
experiment under greenhouse conditions different doses of modified polyacrylamide (0, 0.1, 0.2, and 0.3%)
were added to artificially polluted soils (sandy and sandy loam). Results indicated that soil pH gradually
increased with the application of modified polyacrylamide in both soils. Soil EC significantly increased
due to the addition of modified polyacrylamide in the sandy loam soil as compared to the control. The
concentrations of Cd and Pb in plants grown in sandy loam soils were less than those planted in sandy soils.
The addition of modified polyacrylamide to both soils significantly decreased Pb concentrations in corn
roots and shoots. On the contrary, uptake of Cd by shoots was increased in pots containing 0.1% MPAM in
both soils compared to those in the unamended soils. While Cd uptake by shoots was not affected by MPAM
in soils as compared to those in the unamended soils. The transfer factor (TF) values of Pb were much less
than those of Cd in the same treatments.