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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Fitopatologi Indonesia Jurnal Perikanan dan Kelautan Journal of Tropical Soils JTSL (Jurnal Tanah dan Sumberdaya Lahan) AGRIVITA, Journal of Agricultural Science Jurnal Solum Menara Ilmu Jurnal Agrium Journal of Coastal and Ocean Sciences Media Pertanian Jurnal Riset Perkebunan (JRP) Jagur: Jurnal Agroteknologi Buletin Dharmas Andalas
. Adrinal
Universitas Andalas
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Environmental Science Immunology & microbiology Library & Information Science Medicine & Pharmacology Physics Social Sciences

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Assessing the Impact of Terra Preta from Rice Husk on Soil, Rice Plant Growth, and Yield in the System of Rice Intensification (SRI) Adrinal, Adrinal
JOURNAL OF TROPICAL SOILS Vol. 30 No. 3: September 2025 (in Progress)
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2025.v30i3.%p

Abstract

The practice of intensive rice field cultivation and the excessive application of chemical fertilizer often lead to issues such as a gradual decline in soil quality and fertility, as well as enviromental pollution. By employing Tetadi as ameliorant technology and adopting SRI cultivation techniques, it is hoped that we can mitigate the negative effects on rice fields. This study was aimed to examine the effect of Tetadi on physical properties of paddy soil, growth, and rice yield on SRI method. The experiments were conducted in paddy fields in Pasar Ambacang, Kuranji, Padang city, and the experimental were application of Tetadi A=0 tons/ha, B=5 tons/ha, C= 10 tons/ha, D= 15 tons/ha, E= 20 tons/ha. The data were compared to the criteria of soil physical properties and plant data were statistically analysed for the variance. The results showed that the change has an insignificant impact on soil physical properties, yet decrease BD by 28.2%; increase SOM by 18.55%; TRP by 13.7%, moisture content 5.6%; permeability by 34.2%, and PAT by 20%. Application of 20 tons/ha Tetadi increased number of productive saplings 52.65% as well as the yield by 69.46% compared to the treatment without Tetadi application.
Community Empowerment Strategy for the Development of Aren Sugar Production Center in Koto Malintang, Lake Maninjau, West Sumatra Anwar, Aswaldi; Utami, Ami Sukma; Wisnubroto, Muhammad Parikesit; Adrinal, Adrinal; Khairul, Ujang; Pratama, Rafdi; Adib, Muhammad; Prasetyo, Rival; Susila, Rahma; Itra, Novi Rahmat
Buletin Dharmas Andalas Vol. 2 No. 2 (2025): Buletin Dharmas Andalas
Publisher : Departemen Budidaya Tanaman Perkebunan, Fakultas Pertanian, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/bda.v2i2.43

Abstract

This community service program was implemented in Koto Malintang, West Sumatra, to empower farmer groups through the development of an Aren sugar (Arenga pinnata) production center. The activities consisted of pre-surveys, focus group discussions (FGDs), socialization workshops, participatory planning, and initial demonstrations of intercropping practices. A key component of the program was the financial feasibility analysis, designed to provide farmers and stakeholders with evidence-based tools for decision-making. The analysis was conducted using production costs and revenues from the research location, with a 15-year horizon and a 10% discount rate. Two cultivation scenarios were evaluated: (1) Aren intercropped with seasonal crops and (2) Aren intercropped with robusta coffee. Each scenario considered two product alternatives: molded sugar (gula cetak) and palm sugar crystals (gula semut). The results revealed that molded sugar offered only marginal feasibility, with Net Present Values (NPV) of Rp 28–35 million/ha, Internal Rates of Return (IRR) of 12–15%, Benefit-Cost (B/C) ratios around 1.1, and payback periods of 7–8 years. In contrast, palm sugar crystals showed strong financial viability, with NPVs of Rp 298–330 million/ha, IRRs of 38–45%, B/C ratios of 2.4–2.6, and payback periods of only 4–5 years. Sensitivity analysis confirmed robustness across discount rates of 8–12% and price variations between Rp 40,000–60,000/kg. These findings suggest that palm sugar crystals should be prioritized as the flagship product for Koto Malintang’s Aren sugar industry, supported by institutional strengthening, diversification, and modern marketing to ensure sustainability.
Co-Authors . DARMAWAN . Gusmini . Junaidi . Junaidi Adib, Muhammad Amrizal Saidi Anita Febriani Daulay Anwar, Aswaldi Apdilah, Dony Arief Fauzan Hakim Asmar Asmar Darmawan, Darmawan Dewi Rezki Edwin Edwin Elsa Lolita Putri Emalinda, Oktanis Engla Yona Liza Eri Sulyanti Erick Wahyudi Eti Farda Husin Febrianti Lestari Feri Arlius Giska Oktabriana Gusmini, . Gusnidar, G Herlena, Silvia Herviyanti Herviyanti Irfan Suliansyah Itra, Novi Rahmat Jumsu Trisno Kazuyuki Nishimura Kazuyuki Nishimura Muhammad Parikesit Wisnubroto Nadifa, Ghina Neldi Armon Nevrita, Nevrita Pedri Kasman Prasetyo, Rival Pratama, Rafdi Putri, Elsa Lolita Rahayu, Clara Resti Arjuni Santi Ruhaimah Ruhaimah Sandi , Nofrita Silvia Herlena Siska Efendi Sri Nadiawati Sudewi Isminingsih Susila, Rahma Suyoko Suyoko Syafrimen Yasin Tomio Itani Tomio Itani UJANG KHAIRUL Utami, Ami Sukma Utri Luki Wahyudi, Erick Wahyudin Wahyudin Yaherwandi Yefriwati Yefriwati Yosi Amnurrahman Yulnafatmawita Yulnafatmawita Yulnafatmawita Yulnafatmawita