Current Science Research Bulletin

This study was designed to assess the land suitability level for red chili (Capsicum annuum L.) cultivation on areas impacted by the eruption of Mount Sinabung in Naman Teran District, Karo Regency Indonesia. The research was carried out from November 2025 to February 2026 using a survey - based approach combined with spatial and descriptive analyses. The overlay of soil type, elevation, and slope maps generated 13 Land Map Units (LMUs), although eruption - affected zones were concentrated in two villages within a particular LMU. Land suitability was evaluated using a matching technique that compared land characteristics with crop growth requirements. The results indicate that both study sites are generally classified as not suitable (N), with nutrient retention and erosion hazard identified as the dominant limiting factors. However, several individual land characteristics remain within the S1- S3 suitability range. Although several individual parameters fall within S1 - S3 classes, the overall Land Suitability Index (LSI) remains low, reflecting the multiplicative interaction of limiting factors. Soil acidity can be partially improved through liming; however, nutrient retention remains a persistent constraint due to the inherent properties of volcanic ash-derived soils.Certain constraints, such as soil pH, can be mitigated through liming; however, low nutrient retention remains a critical limitation that is difficult to substantially improve.

land evaluation, red chili, volcanic eruption, soil fertility

1. Bouma, J. (2002). Land quality indicators of sustainable land management across scales. Agriculture, Ecosystems & Environment, 88(2), 129–136.
2. FAO. (1976).Aframework for land evaluation. Food and Agriculture Organization of the United Nations. https://www.fao.org/4/x5310e/x5310e00.htm
3. Fleige, H., Beck-Broichsitter, J. Dörner, M.O. Goebel, J. Bachmann, R. Horn., 2016.
4. Land use and soil development in southern Chile: Effects on physical properties. Journal of Soil Scienceand Plant Nutrition 16(3):818-831. DOI: 10.4067/S0718-95162016005000058
5. Harahap, F. S., Rauf, A., Rahmawaty, R., dan Sidabukke, S. H. 2018. Evaluasi kesesuaian lahan pada areal penggunaan lain di Kecamatan Sitellu Tali Urang Julu Kabupaten Pakpak Bharat untuk pengembangan tanaman cabai merah (Capsicum annuum L.). Jurnal Tanah Dan Sumberdaya Lahan, 5(2), 829–839. https://jtsl.ub.ac.id/index.php/jtsl/article/view/208
6. Lal, R. (2015). Soil degradation and resilience. In R. Lal (Ed.), Soil management and climate change (pp. 15–37). CRC Press.
7. Mujiyo, M., et al. (2026). Land Suitability Assessment and Agricultural Sustainability of Rice Cultivation in the Hilly Region of Jatiroto, Indonesia. Journal of Multidisciplinary Applied Natural Science.
8. Mutmainnah, D., Ayu, I. W., & Oklima, A. M. (2021). Analisis Tanah Untuk Indikator TingkatKetersediaan Lengas Tanah Di Lahan Kering Kecamatan Empang. Jurnal Agroteknologi, 1(1), 27–38.
9. Nanzyo, M. (2002). Uniqueproperties of volcanicash soils. Global Environmental Research, 6(2), 99–112. DOI https://doi.org/10.57466/ger.6.2_99.
10. Pinatih, I., Kusmiyarti, T. B., dan Susila, K. D. 2019. Evaluasi status kesuburan tanah pada lahan pertanian di Kecamatan Denpasar Selatan. E-Jurnal Agroekoteknologi Tropika, 4(4), 282–292.
11. Prayoga, M. H., A.A.Bahri,Yusuf Azis , E.Rahmawati, 2021. Land suitability evaluation to increase Hiyung cayenne pepper production at Tapin district South Kalimantan Province. International Journalof Biosciences 19(3), 126-
12. 140. ISSN: 2220-6655 (Print),2222-5234 (Online) http://www.innspub.net Putri, D. R., & Sasongko, P. E. (2023). Sifat Fisika Tanah pada Tipe Penggunaan
13. Lahan yang Berbeda di Kecamatan Pujon, Jawa Timur, Indonesia. Jurnal Ilmu- Ilmu Pertanian Indonesia, 25(1), 27–33. https://doi.org/10.31186/jipi.25.1.27-33
14. Rossiter, D. G. (1996). A theoretical framework for land evaluation. Discussion paper. Geoderma, 72 (1996), 165–190.Copyright (8 1996 Elsevier Science. https://doi.org/10.1016/0016-7061(96)00031-6
15. Shoji, S., M. Nanzyo and R. A. Dahlgren, 1994. Volcanic ash soils: Genesis, properties and utilization. Elsevier. https://shop.elsevier.com/books/volcanic-ash-soils/shoji/978-0-444-89799-2
16. Simanjuntak, C. M., , Deni Elfiati dan Delvian, 2015. Dampak Erupsi Gunung Sinabung Terhadap Sifat Kimia Tanah Di Kabupaten Karo (The impact of eruption of Mount Sinabung on chemical properties of soil in Karo). Fakultas Kehutanan, Universitas Sumatera Utara
17. Sukarman, S., Mulyani, A., & Purwanto, S. (2018). Modifikasi Metode Evaluasi Kesesuaian Lahan Berorientasi Perubahan Iklim. Jurnal Sumberdaya Lahan, 12(1), 1.
18. Sys, C., E. Van Ranst, I.J. Debaveye, 1991. Land evaluation. Part I: Principles in land evaluation and crop production calculations. International Training Centre for Post-Graduate Soil Scientists. https://edepot.wur.nl/494365
19. Taani A.A., Y.A. Husban and IbrahimFarhan (2020). Land suitability evaluation for agricultural use using GIS and remotesensing techniques: The case study of Ma’an Governorate, Jordan. The Egyptian Journal of Remote Sensing and Space Science. DOI: 10.1016/j.ejrs.2020.01.001
20. Tarigan, A. (2015). Rehabilitation Agriculture Area Covered By Sinabung Volcanic Ash.  Jurnal  Online  Pertanian  Tropik  (2)  No.  3,  220–227. DOI: https://doi.org/10.32734/jopt.v2i3.2915
21. Weil, R. R and N.C. Brady, 2017. The nature and properties of soils (15thed.).
22. Pearson Education. ISBN: 978-0133254488
23. Yuan, X., et al. (2025). Genetic dissection of Phytophthora capsici resistance in Capsicum annuum by genome-wide association mapping and fine mapping. Horticultural Plant Journal Vol 11 (6) November 2025, pp 2177-2193. https://doi.org/10.1016/j.hpj.2024.09.003
24. Zhiddiq, S., Nasiah Badwi,A. Khaerul Anam Haeril, 2021,Evaluasi Kesesuaian Lahan Untuk Tanaman Lada (Piper Nigrum Linn) di Kecamatan Kindang, Kabupaten Bulukumba. La Geografia Vol. (1) Oktober2021. p-ISSN: 1412-8187e-ISSN: 2655-1284