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KADAR TIMBAL (Pb) PADA TANAH ANDISOL YANG DITANAMI SAWI PUTIH (Brassica rapa pekinensis L.) DI DESA TALANG PASAI, PAGAR ALAM, SUMATERA SELATAN

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The lead (Pb) concentration in andisol soil cultivated with Chinese cabbage (Brassica rapa pekinensis L.) in Talang Pasai Village, Pagar Alam, South Sumatra was analyzed to identify factors influencing its accumulation in agricultural land. The study applied a detailed soil survey method at a scale of 1:2,000 using purposive sampling. Soil samples were collected from five observation points, each consisting of a composite sample of five sub-points within an area of 1/2 ha. Fertilizer samples analyzed included compost, NPK Phonska, and urea. Laboratory analysis showed that soil Pb concentrations ranged from 55,18 to 73,27 mg kg⁻¹, with an average value of 63,38 ± 6,96 mg kg⁻¹, indicating that Pb levels were still below the maximum allowable limit of 100 mg kg⁻¹ in soil. Soil chemical properties analyzed included pH, cation exchange capacity (CEC), and organic carbon, and their relationships with soil Pb concentration were evaluated using multiple linear regression with the stepwise method. The regression results indicated that pH was the most dominant variable explaining Pb variation, with an R Square value of 0,72 and an Adjusted R² of 0,7037, followed by CEC (R Square 0,75 and Adjusted R² 0,7073) and organic carbon (R Square 0,80 and Adjusted R² 0,7214). The relationship between pH and Pb was positive, whereas CEC and organic carbon played a role in reducing Pb availability in the soil.

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Detail Information

Series Title

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Call Number

T1916042025

Publisher

Indralaya : Prodi Ilmu Tanah, Fakultas Pertanian Universitas Sriwijaya., 2025

Collation

xiv, IV-2 hlm.; ilus.; tab.; 29 cm.

Language

Indonesia

ISBN/ISSN

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Classification

631.410 7

Content Type

Text

Media Type

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Carrier Type

-

Edition

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Subject(s)

Kimia tanah
Prodi Ilmu Tanah

Specific Detail Info

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Statement of Responsibility

TUTI

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