Study of Soil Erodibility in Its Relationship with Coffee Plant Productivity Based on Agroforestry in Silaen Sub-district, Toba Regency

Authors

Fitra Syawal Harahap, Natural Resources and Environmental Management Study Program, Postgraduate School, Universitas Sumatera Utara, Kampus USU Padang Bulan, Medan 20155, North Sumatra, Indonesia AND Agrotechnology Study Program, Faculty of Science and Technology, Universitas Labuhanbatu. North Sumatra, IndonesiaFollow
Rahmawaty Rahmawaty, Natural Resources and Environmental Management Study Program, Postgraduate School, Universitas Sumatera Utara, Kampus USU Padang Bulan, Medan 20155, North Sumatra, Indonesia AND Faculty of Forestry, Universitas Sumatera Utara, Kampus 2 USU Kuala Bekala, Pancur Batu, Deli Serdang, North Sumatra, IndonesiaFollow
Abdul Rauf, Natural Resources and Environmental Management Study Program, Postgraduate School, Universitas Sumatera Utara, Kampus USU Padang Bulan, Medan 20155, North Sumatra, Indonesia AND Agroecotechnology Study Program, Faculty of Agriculture, Universitas Sumatera Utara, Kampus USU Padang Bulan, Medan 20155, North Sumatra, IndonesiaFollow
Rahmanta Rahmanta, Natural Resources and Environmental Management Study Program, Postgraduate School, Universitas Sumatera Utara, Kampus USU Padang Bulan, Medan 20155, North Sumatra, Indonesia AND Agribusiness Study Program, Agribusiness Study Program, Faculty of Agriculture, Universitas Sumatera Utara. Kota Medan 20155, North Sumatra, IndonesiaFollow
Delvian Delvian, Natural Resources and Environmental Management Study Program, Postgraduate School, Universitas Sumatera Utara, Kampus USU Padang Bulan, Medan 20155, North Sumatra, Indonesia AND Faculty of Forestry, Universitas Sumatera Utara, Kampus 2 USU Kuala Bekala, Pancur Batu, Deli Serdang, North Sumatra, IndonesiaFollow
Badaruddin Badaruddin, Natural Resources and Environmental Management Study Program, Postgraduate School, Universitas Sumatera Utara, Kampus USU Padang Bulan, Medan 20155, North Sumatra, Indonesia AND Sociology Study Program, Faculty of Social and Political Sciences, Universitas Sumatera Utara, Medan, IndonesiaFollow

Abstract

Coffee plants (Coffea sp.) are currently a plantation crop in great demand among farmers in Silaen Sub-district. However, the soil conditions in Silaen Sub-district are dominated by sandy soil, which can trigger soil sensitivity to high erosion potential. One of the efforts to mitigate the decline in coffee production can be done through estimating the soil erodibility index in Silaen Sub-district. This research aims to estimate the soil erodibility index and obtain its relationship with agroforestry-based coffee production in Silaen Sub-district, Toba Regency. The method for determining land boundaries using land map units (SPL) in the form of land use, soil type, and slope. The parameters used are soil texture (M), organic matter (a), structure (b), and permeability (c), as well as coffee beans. Statistical analysis of data takes the form of correlation tests and data regression tests. The results of data analysis show that the highest wet weight of coffee cherries is found at SPL 8 with plantation land use, Typic Hapludands soil type, and land slope of 8–15%. The wet weight value of coffee fruit at SPL 8 is 2.19 t ha^–1 with an erodibility value of 0.39. The lowest wet weight of coffee beans is found at SPL 2 with the use of moorland, Andic Eutrudepts soil type, and land slope of 8–15%. The average value of wet weight of coffee beans at SPL 2 is 0.15 t ha^–1with an erodibility value of 0.28 while the results of the regression test R² value of 0.11. So this shows that soil erodibility affects the wet weight of coffee fruit by 11%. Application of conservation techniques, namely making terraces, so that the effectiveness of terracing, organic mulch, and agroforestry in suppressing erodibility for 5–10 years can increase crop yields.

Keywords

Coffee plant production, Soil erodibility index, Soil type, Sandy soil, Toba regency

Article Type

Special Issue Article

First Page

236

Last Page

248

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite this Article

Harahap, Fitra Syawal; Rahmawaty, Rahmawaty; Rauf, Abdul; Rahmanta, Rahmanta; Delvian, Delvian; and Badaruddin, Badaruddin (2026) "Study of Soil Erodibility in Its Relationship with Coffee Plant Productivity Based on Agroforestry in Silaen Sub-district, Toba Regency," Baghdad Science Journal: Vol. 23: Iss. 1, Article 18.
DOI: https://doi.org/10.21123/2411-7986.5140