TINGKAT ERODIBILITAS TANAH PADA LAHAN TANAMAN KELAPA SAWIT MENGHASILKAN (ELAEIS GUINEENSIS JACQ) DI KELURAHAN BAKARAN BATU, KECAMATAN RANTAU SELATAN, KABUPATEN LABUHAN BATU

AHMAD RIZKY DONGORAN, NPM 2203100019 (2026) TINGKAT ERODIBILITAS TANAH PADA LAHAN TANAMAN KELAPA SAWIT MENGHASILKAN (ELAEIS GUINEENSIS JACQ) DI KELURAHAN BAKARAN BATU, KECAMATAN RANTAU SELATAN, KABUPATEN LABUHAN BATU. Skripsi thesis, Universitas Labuhanbatu.

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Abstract

Erosi tanah merupakan ancaman serius terhadap keberlanjutan agrikultur, khususnya pada sistem monokultur seperti perkebunan kelapa sawit. Penelitian ini bertujuan untuk (1) menganalisis tingkat erodibilitas (faktor K) tanah, (2) mengidentifikasi karakteristik fisika-kimia tanah yang mempengaruhi erodibilitas, dan (3) memetakan sebaran spasial kelas erodibilitas pada lahan kelapa sawit menghasilkan di Kecamatan Rantau Selatan. Penelitian dilaksanakan dari Maret hingga Agustus 2023. Sampel tanah diambil secara komposit dari 20 titik sampling yang tersebar di areal perkebunan dengan menggunakan metode survei dan analisis laboratorium. Parameter yang diukur meliputi tekstur tanah, struktur, permeabilitas, kandungan bahan organik, dan kadar C-Organik. Nilai erodibilitas dihitung menggunakan persamaan nomograf USLE yang dimodifikasi. Hasil penelitian menunjukkan nilai erodibilitas tanah (K) berkisar antara 0,10 hingga 0,32, dengan rata-rata 0,21, yang tergolong dalam kategori rendah hingga sedang. Sebaran dominan berada pada kelas sedang (0,20-0,29) seluas 65% dari area studi. Analisis korelasi menunjukkan kandungan bahan organik (r = -0,78) dan persentase debu (r = 0,65) merupakan faktor penentu utama yang secara signifikan mempengaruhi nilai K. Rendahnya bahan organik (<2%) pada sebagian besar titik sampling meningkatkan kerentanan tanah terhadap dispersi. Penelitian ini menyimpulkan bahwa meskipun nilai erodibilitas umumnya kategori rendah- sedang, praktik pengelolaan tanah yang kurang memperhatikan penambahan bahan organik berpotensi meningkatkan risiko degradasi tanah dalam jangka panjang. Diperlukan implementasi konservasi tanah seperti pengaplikasian mulsa tandan kosong kelapa sawit (TKKS) dan tanaman penutup tanah (cover crop) untuk meningkatkan stabilitas agregat dan keberlanjutan sistem produksi. Kata Kunci: Erodibilitas Tanah, USLE, Kelapa Sawit Menghasilkan, Bahan Organik, Konservasi Tanah ================================================================================================= Soil erosion poses a serious threat to agricultural sustainability, particularly in monoculture systems such as oil palm plantations. This study aimed to (1) analyze the soil erodibility (K-factor) level, (2) identify the soil physicochemical characteristics influencing erodibility, and (3) map the spatial distribution of erodibility classes in productive oil palm plantations in Rantau Selatan District. The research was conducted from March to August 2023. Composite soil samples were taken from 20 sampling points distributed across the plantation area using survey and laboratory analysis methods. Measured parameters included soil texture, structure, permeability, organic matter content, and organic C content. The erodibility value was calculated using the modified USLE nomograph equation. The results showed that the soil erodibility (K) values ranged from 0.10 to 0.32, with an average of 0.21, classified as low to moderate. The dominant distribution was in the moderate class (0.20-0.29) covering 65% of the study area. Correlation analysis indicated that organic matter content (r = -0.78) and silt percentage (r = 0.65) were the primary determining factors that significantly influenced the K value. The low organic matter (<2%) at most sampling points increased the soil's susceptibility to dispersion. This study concludes that although the erodibility values are generally in the low-moderate category, soil management practices that pay less attention to organic matter addition have the potential to increase the risk of soil degradation in the long term. The implementation of soil conservation measures such as the application of empty fruit bunch (EFB) mulch and cover crops is necessary to improve aggregate stability and the sustainability of the production system. Keywords: Soil Erodibility, USLE, Productive Oil Palm, Organic Matter, Soil Conservation

Item Type:	Thesis (Skripsi)
Uncontrolled Keywords:	Erodibilitas Tanah, USLE, Kelapa Sawit Menghasilkan, Bahan Organik, Konservasi Tanah==================Soil Erodibility, USLE, Productive Oil Palm, Organic Matter, Soil Conservation
Subjects:	Q Science > QK Botany S Agriculture > S Agriculture (General) S Agriculture > SB Plant culture
Divisions:	Fakultas Sains Dan Teknologi > Agroteknologi
Depositing User:	Unnamed user with email repository@ulb.ac.id
Date Deposited:	19 May 2026 07:01
Last Modified:	19 May 2026 07:01
URI:	http://repository.ulb.ac.id/id/eprint/2340

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