Salam, Abdul Kadir and Sriyani, Nanik and Heradilla, Mutia and Septiana, Alia (1997) Alang-Alang (Imperata Cylindrica [L.] Beauv.) Mengubah Sifat Kimia dan Biokimia Tanah Tercemar Timah Hitam. Prosiding Seminar Nasional Biologi XV (3). pp. 1026-1029. ISSN 979-8287-17-7


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Alang-alang shows an extraordinary adaptability to tropical soils of various conditions assumably due to its ability to modify soil properties. This research was to evaluate the effects of alang-alang on some chemical and biochemical properties of soil spiked with Pb and treated with lime. This experiment was conducted in a glass house with lime added at 4 ton CaCO3 ha-1 and Pb at 20 mg kg-1. Other weeds, i.e. pigweed (Amaranthus spinosus L.), green kyllinga (Cyperus kyllingia L.), and amaranth (Amaranthus tricolour L.) were also used as comparisons. The results showed that soil pH in the root zone of alang-alang was higher than those in the root-zones of amaranth, pi'gweed, and green kyllinga. The solubilities of Fe, Cu, and Pb were generally lower in the root-zone of alang-alang than those in the root-zones of amaranth, green kyllinga, or pigweed. The activities of phosphatases were higher in the root-zone of alang-alang than those in the root-zones of pigweed, green kyllinga, and amaranth. The addition of lime significantly increased the soil pH and the acid phosphatase activity in the root-zone of alang-alang, but the negative correlation of soil pH with metal solubilities was not observed. The activity of alkaline phosphatase in the root-zone of alang-alang decreased with liming. The addition of Pb increased the Pb solubility to about 1 mg kg-1, showing that most of the added Pb was immobilized by soil.

Item Type: Article
Uncontrolled Keywords: Alang-alang, Heavy Metals, Lime, Lead, Phosphatases
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian (FP) > Prodi Ilmu Tanah
Depositing User: Abdul Kadir Salam
Date Deposited: 25 Apr 2018 08:43
Last Modified: 25 Apr 2018 08:43

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