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All Journal Journal of Degraded and Mining Lands Management Andalasian International Journal of Applied Science, Engineering, and Technology PERTANIAN TROPIK Agrimas : Jurnal Pengabdian Masyarakat Bidang Pertanian
Harianti, Mimien
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Mechanical Engineering Other

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Spatial assessment of soil fertility index on tropical mineral soil across land units in Padayo farming community, West Sumatra Hijri, Nurul; Reflinaldon, Reflinaldon; Hermansah, Hermansah; Juniarti, Juniarti; Harianti, Mimien; Noferita, Jelsi Trisna; Khairati, Nurul; Naspendra, Zuldadan; Ivanovich, Vasenev Ivan
Journal of Degraded and Mining Lands Management Vol. 13 No. 3 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.133.10759

Abstract

Soil fertility is one of the primary aspects determining agricultural productivity, especially in tropical mineral soils, where nutrient constraints frequently limit crop growth and yield. This study aimed to (a) assess and map the Soil Fertility Index (SFI) across different land units, (b) evaluate soil characteristics, and (c) analyze the major factors influencing soil fertility. A total of 21 soil samples from 14 land units were studied. The SFI was calculated using seven key soil chemical properties: pH, organic matter, phosphorus, potassium, calcium, magnesium, and aluminum. The results showed that soil fertility in the study area was generally low, with a mean SFI value of 21.53. Among the land units, two were classified as very low, nine as low, and three as moderate fertility. The lowest SFI (16.14) was observed in land unit pTls.2.Kc, while the highest (26.78) occurred in pTps.2.Hs. Only 34.50% of the area exhibited moderate fertility, with the remainder classified as low to very low. Principal component analysis revealed that four components accounted for 81.36% of the total variance, with the dominant factors ranked as follows: CEC>base saturation>aluminum saturation>K>Mg>Ca>Na>P>pH>soil organic carbon. High annual rainfall (5,064 mm/year) and predominantly moderately steep to steep slopes were the main agroclimatic and physical constraints limiting land use. The study highlighted that the SFI is effective in representing soil fertility status in tropical soils. The integration of suitable crops that are adapted to ecological conditions and the improvement of soil fertility based on key controlling factors are essential for utilizing the land.
Co-Authors . Herviyanti . Reflinaldon Aprisal Awalina, Rahmi Batara, Dewi Syaputri Budi Prasetyo, Teguh Darfis, Irwan Emalinda, Oktanis Gusmini Gusnidar Hermansah Hermansah, Hermansah Hijri, Nurul Ivanovich, Vasenev Ivan Junaidi Junaidi Juniarti Juniarti Juwita, Pitri Kasim, Susilawati Khairati, Nurul Kurnianto, Reza Tri Lita, Arestha Leo Maulana, Amsar Meitasari, Retno Noferita, Jelsi Trisna Prasetyo , Teguh Budi Sandi, Nofrita Syafrimen Yasin Syaiful Anwar Teguh Budi Prasetyo Zuldadan Naspendra