Salam, A.K. Residues of Cu and Zn in Tropical Soil Over 18 Years after Treatment with Cu- and Zn- Containing Waste, Lime, and Compost. Geoderma. ISSN 00167061 (Submitted)

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Heavy metals are believed to be retained in soils for decades and some soil amendments may strengthen their retainment. This research was intended to evaluate the changes in the extracted Cu and Zn in a tropical soil over about 18 years after treatment with Cu- and Zn-containing waste, dolomite, and cassava-leaf compost. Soil samples were taken at about 1.5, 3, 10, and 18 years after treatments. Treatment plot was set in 1998 and was factorially treated with a metal-spoon industrial waste at rates of 0, 15, and 60 ton ha-1, lime at 0 and 5 ton ha-1, and compost at 0 and 5 ton ha-1. The results show that the significant increases in Cu and Zn in topsoil and subsoil caused by waste addition were observed over 18 years after treatment. The increase in pH by lime was observed over 10 years but its effect on the extracted Cu and Zn was observed only at 1.5 years, particularly in topsoil. However, the effect of lime was observed over 18 years when waste was also given. Similarly, the effect of compost was absent over 18 years, but was significant when waste and/or lime were also given. The relative concentration of Cu and Zn decreased over 18 years and their concentrations were in general lower with lime and/or compost treatment.

Item Type: Article
Uncontrolled Keywords: Copper, Residue, Retainment, Tropical Soil, Waste, Zinc
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian (FP) > Prodi Ilmu Tanah
Depositing User: Abdul Kadir Salam
Date Deposited: 16 Nov 2017 04:19
Last Modified: 16 Nov 2017 04:19

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