Abstract
We evaluated four organic amendments for their effect on AB-DTPA extractable Ni with time in an incubation study. Organic amendments viz. farm yard manure (FM), poultry manure (PM), press mud (PrM) and activated carbon (AC) were applied onto soil @ 2 and 4 % on air-dry weight basis. Soil samples were taken after 30- and 60-days incubation. Soil-applied amendments differed significantly for soil pH1:10, OM, AB-DTPA extractable Ni and other metals like Cu, Zn, Mn and Cd. Amendments increased OM in post-incubation soil and increase was maximum was with AC4 (AC @ 4 %) after both periods. Incubation time decreased OM, decrease being maximum (41 %) and minimum (5 %) with FM4 (FM @ 4 %) and PrM2 (PrM @ 2 %), respectively. Maximum pH was with AC4 and AC2 (AC @ 2 %) while it was minimum with PrM4 (PrM @ 4 %). The FM and AC decreased Ni in soil after 30-days incubation but this effect diminished after 60-days incubation. In general, Ni and other metals decreased in soil with time.

Muhammad Sabir, Abdul Ghafoor, Saifullah, Muhammad Zia-ur-Rehman , Ghulam Murtaza . (2008) Effect of organic amendments and incubation time on extractability of ni and other metals from contaminated soils, , Volume-45, Issue-1.
  • Views 279
  • Downloads

Article Details

Volume
Issue
Type
Language