Salam, Abdul Kadir and Watanabe, Akira and Kimura, Makoto (1997) Timah Hitam Menurunkan Aktivitas Beberapa Jenis Enzim Tanah. Pros Seminar Nasional Biologi XV (3). pp. 1323-1326. ISSN 979-8287-17-7

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Abstract

Heavy metals are suggested to lower the soil enzymatic activities, presumably by affecting the soil microbial communities and plant roots producing soil enzymes. This research was to evaluate the influence of Pb on the activities of some soil enzymes. Lead was introduced into soil system at concentrations ranging from O to 40 mg kg-1 and was allowed to interact with the soil components for 1 week at 1-to-1 soil-to-water ratio. The results showed that Pb addition at 40 mg kg-1 significantly reduced the activity of alkaline phosphatase to 59-72% and -glucosidase to 60-89%. Addition of Pb at about 20-40 mg kg-1 stimulated the activity of acid phosphatase. The activity of urease was in general also depressed by Pb addition. These observations indicate that soil contamination by some Pb-sources may affect the activities of some microorganisms and plant roots producing the soil enzymes.

Item Type:	Article
Uncontrolled Keywords:	Lead, Soil Enzymes, Phosphatases, Urease, -Glucosidase
Subjects:	S Agriculture > S Agriculture (General)
Divisions:	Fakultas Pertanian (FP) > Prodi Ilmu Tanah
Depositing User:	Abdul Kadir Salam
Date Deposited:	26 Apr 2018 04:01
Last Modified:	26 Apr 2018 04:01
URI:	http://repository.lppm.unila.ac.id/id/eprint/6473

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