Salam, Abdul Kadir and Sriyani, Nanik and Heradilla, Mutia and Septiana, Alia (1997) Aktivitas Fosfatase di Daerah Perakaran Beberapa Gulma Tropika yang Tercemar Timah Hitam. AGRIVITA, 20 (1). pp. 12-16. ISSN 0126 - 0537

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Abstract

Activities of soil phosphatases are suggested to be governed by plant species and other factors such as pH and heavy metal contents. Soil phosphatases were studied in the root-zones of some tropical weeds contaminated with Pb and treated with lime. Weeds were grown in 200 -g potted soil samples for 4 weeks in a glass house. The results showed that the soil was dominated by acid phosphatase. The activities of acid and alkaline phosphatases in the root zones of alang-alang were higher than those in the root-zones of green kylllnga, pigweed, and amaranth, while those in the root-zone of pigweed was the lowest. Lime at 4 ton CaCO,ha-1 significantly decreased the activity of acid phosphatase and increased the activity of alkaline phosphatase. The effect of Pb at 20 mg kg-1 was not observed.

Item Type: Article
Uncontrolled Keywords: Lead, Heavy Metals, Phosphatases, Tropical Weeds
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian (FP) > Prodi Ilmu Tanah
Depositing User: Abdul Kadir Salam
Date Deposited: 25 Apr 2018 06:41
Last Modified: 25 Apr 2018 06:41
URI: http://repository.lppm.unila.ac.id/id/eprint/6369

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