Salam, Abdul Kadir (1998) Peranan Kadar Air dan Waktu Inkubasi dalam Penetapan Aktivitas Enzim Fosfatase dalam Tanah. Journal of Tropical Soils, 3 (2). pp. 129-134. ISSN 0852-257X

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Abstract

Activities of enzymes in soils are affected by soil moisture contents, thus water content of soil samples is very important in determination of soil enzymatic activities. This research was to evaluate the effects of water content and incubation time in measurement of phosphatase activity in soils. Soil samples were an Ultisol from Aichi Prefecture, Japan, and 4 different soils (Ultisol, Oxisol, Andisol, and Alfisol) from Lampung, Indonesia. The japanese soil sample was treated in laboratory with water at 0 to 120% (water-to-soil ratios Oto 1.2) and incubated for the time ranging from O to 15 days before enzyme analysis while the indonesian soil samples were incubated at a water-to-soil ratio of 0.4 for Oto 12 weeks. Activity of phosphatase in the japanese soil increased significantly with water-content and reached a maximum value at water-to-soil ratio of 0.4 and decreased at higher water contents. Incubation time increased the phosphatase activity showing the first order of kinetics.

Item Type: Article
Uncontrolled Keywords: Incubation Time, Phosphatase Measurement, Soil Enzymes, Tropical Soils, Water Content
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian (FP) > Prodi Ilmu Tanah
Depositing User: Abdul Kadir Salam
Date Deposited: 25 Apr 2018 08:37
Last Modified: 25 Apr 2018 08:37
URI: http://repository.lppm.unila.ac.id/id/eprint/6527

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