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The Evaluation of Land Suitability for Arabica Coffee Cultivation (Coffea arabica L.) in Nagari Koto Gadang Guguk, Solok Regency, West Sumatra Maidia Solfianti; Gunadi Gunadi
Jurnal Solum Vol 23 No 1 (2026)
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jsolum.v23i1.315

Abstract

Arabica coffee (Coffea arabica L.) is one of the high economic value plantation commodities, where the level of production is largely determined by land suitability. Scientific information related to specific land suitability in potential areas, such as Solok Regency, is still minimal. This research was conducted in Nagari Koto Gadang Guguk, Gunung Talang District, West Sumatra, with the aim of assessing the level of land suitability for Arabica coffee cultivation. The research was conducted from August to November 2024 through field surveys, laboratory analysis, and Geographic Information System (GIS)-based mapping at a scale of 1:50,000. Analysis included soil physical characteristics (texture, effective depth, drainage), chemical properties (pH, organic carbon, cation exchange capacity, base saturation), as well as topography and climate factors. Results showed that the study land was dominated by dusty loam to dusty clay textures with medium to high C-organic content (2.68-3.12%), slightly acidic pH (5.50-6.18), medium-high CEC values (21.53-32.54 cmol kg-ยน), and base saturation of 42.53-68.23%. From the evaluation results, four land units (SL1-SL4) were categorized as S3 class (marginally suitable) with the main constraints of excess rainfall (2,817-3,000 mm/year) and slope (9-40%). Meanwhile, SL5 is categorized as class N (unsuitable) due to drainage problems. The potential to increase land suitability is still open through the application of soil and water conservation, terrace construction, use of adaptive varieties, and improvement of soil and water management. The overall results confirm the importance of land suitability evaluation as a foundation for sustainable Arabica coffee management in the tropical highland region. Key words : Arabica coffee, land suitability, soil conservation, GIS
Dinamika Spasial Perubahan Penggunaan Lahan dan Potensi Lahan Pertanian pada Daerah Aliran Sungai Tropis: Studi Kasus Sub Das Melawi, Indonesia Gunadi Gunadi; Rini Hazriani; Romiyanto Romiyanto; Fitriana Fitriana
Jurnal Solum Vol 23 No 2 (2026): Jurnal Solum
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/solum.v23i2.336

Abstract

Land-use change within watersheds represents a major challenge for land resource management, as it impacts agricultural productivity, hydrological functions, and environmental sustainability. The Melawi Sub-watershed, part of the Kapuas Watershed, is experiencing land-use dynamics driven by plantation expansion, agricultural activities, and shifts in spatial utilization. This study aims to analyze land-use change dynamics in the Melawi Sub-watershed from 2022 to 2024, evaluate the presence of agricultural land within forest areas and Business Use Rights (HGU) zones, and identify potential agricultural land available for future development. The analysis utilized Sentinel-2 imagery processed on the Google Earth Engine platform using the Random Forest algorithm; subsequent spatial overlay analysis generated a land-use change matrix and identified land distribution across forest areas and HGU zones. The results indicate an increase in plantation area by 20,153.357 hectares, while mixed dryland agriculture and shrubland decreased by 26,879.009 hectares, signaling a conversion toward more intensive land use. Overlay results reveal that of the total 1,148,066.594 hectares of agricultural land, approximately 540,005.663 hectares (47.04%) are located within forest areas, and 99,339.002 hectares (8.65%) fall within HGU zones. After accounting for these areas, a potential 508,721.929 hectares (44.31%) of agricultural land remains available for sustainable agricultural development. Key words: Land Use Change, Melawi Sub-watershed, Sentinel-2
PEMBERDAYAAN KELOMPOK TANI TUAH TALINO MELALUI PEMANFAATAN LIMBAH ORGANIK MENJADI PUPUK ORGANIK CAIR DI KELURAHAN MAYASOPA, KOTA SINGKAWANG Eka Widiawati Wijaya Kusuma; Denah Suswati; Gunadi Gunadi
Jurnal Abdimas Ilmiah Citra Bakti Vol. 7 No. 3 (2026)
Publisher : STKIP Citra Bakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38048/jailcb.v7i3.7361

Abstract

Pengelolaan limbah organik rumah tangga dan kebun di Kelurahan Mayasopa, Kecamatan Singkawang Timur, Kota Singkawang belum dilakukan secara optimal. Limbah sayur masih banyak dibuang secara terbuka atau dibakar, sementara potensi pemanfaatannya sebagai bahan baku pupuk organik belum dimanfaatkan secara optimal. Kegiatan pengabdian kepada masyarakat ini bertujuan meningkatkan pengetahuan dan keterampilan mitra dalam memanfaatkan limbah organik lokal menjadi pupuk organik cair (POC) yang dapat digunakan untuk mendukung kegiatan budidaya jagung. Mitra kegiatan adalah Kelompok Tani Tuah Talino di Kelurahan Mayasopa yang beranggotakan 10 orang. Metode pelaksanaan menggunakan pendekatan partisipatif melalui tahapan persiapan program, sosialisasi, demonstrasi dan praktik pembuatan POC, serta evaluasi pelaksanaan dan keberlanjutan program. POC dibuat menggunakan limbah sayur dan limbah kebun sebagai bahan baku, dengan penambahan EM4 dan gula merah untuk mendukung proses fermentasi. Hasil kegiatan menunjukkan bahwa mitra dapat mengikuti dan mempraktikkan tahapan pembuatan POC, mulai dari persiapan dan pencacahan bahan, pencampuran bahan, perakitan sistem fermentasi, hingga pemantauan proses. Mitra juga menunjukkan respons dan partisipasi aktif selama kegiatan, serta menilai teknologi yang diperkenalkan sesuai dengan kebutuhan dan sumber daya yang tersedia di lingkungan mereka. Kegiatan ini menunjukkan bahwa pemanfaatan limbah organik melalui teknologi sederhana dan pendekatan partisipatif dapat meningkatkan pengalaman praktis dan kapasitas teknis kelompok tani dalam mengolah limbah menjadi POC.
Co-Authors Denah Suswati Eka Widiawati Wijaya Kusuma Fitriana Fitriana Maidia Solfianti Rini Hazriani Romiyanto Romiyanto