Abstract
Heavy metal contamination of the soil environment has become a major source of
concern and has posed serious human health related problems in many developing
countries particularly Pakistan. Chemical immobilization of heavy metals can be
accomplished by the addition of amendments to reduce contaminant solubility and
ultimately uptake by the plants. However, a very scarce information is available on the
immobilization of Pb with the application of different Ca, S and P sources (gypsum i.e.,
gyp, rock phosphate i.e., RP and Di-ammonium phosphate i.e., DAP) on rice grown
normal and salt-affected Pb-spiked soils. Therefore, a pot trial was conducted to
investigate the uptake, translocation of Pb and chlorophyll contents of rice as
influenced by soil applied amendments (gyp, RP and DAP) and their variable amounts
in normal and salt-affected Pb-spiked soils. The results showed that the Pb and salinity
stress induced decrease in chlorophyll contents of rice were significantly (p ≤ 0.05)
counteracted by the applied gyp, RP and DAP. Application of 7.5 g gyp kg-1 soil was
found the most effective in improving chlorophyll contents, and reducing Pb uptake
and translocation both in normal and salt-affected Pb-spiked soils.
Muhammad Mazhar Iqbal, Ghulam Murtaza, Wasim Javed, Sabir Hussain, Muhammad Ilyas, Muhammad Ashfaq Anjum, Muhammad Ashraf, Zafar Iqbal. (2017) Uptake, Translocation of Pb and Chlorophyll Contents of Oryza Sativa as Influenced by Soil-Applied Amendments under Normal and Salt-Affected Pb-Spiked Soil Conditions, Asian Journal of Agriculture and Biology, Volume 5, Issue 1.
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