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All Journal Journal of Tropical Soils JTSL (Jurnal Tanah dan Sumberdaya Lahan) JURNAL AGROTEKNOLOGI Journal of Degraded and Mining Lands Management AGRIVITA, Journal of Agricultural Science Jurnal Solum Planta Tropika TERRA : Journal of Land Restoration Jurnal Pertanian Agros JURNAL AGROHITA Jurnal Hilirisasi IPTEKS (JHI) International Journal of Agricultural Sciences Jurnal Sains Agro Agroradix : Jurnal Ilmu Pertanian Jurnal Pengabdian kepada Masyarakat Journal of Applied Agricultural Science and Technology Prosiding Seminar Nasional Universitas Serambi Mekkah Jurnal AGRISEP: Kajian Masalah Sosial Ekonomi Pertanian dan Agribisnis Jagur: Jurnal Agroteknologi Horizon: Indonesian Journal of Multidisciplinary Journal Arunasita
Syafrimen Yasin
Dosen Jurusan Ilmu Tanah Universitas Andalas Padang, INDONESIA
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Public Health Social Sciences Veterinary Other

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Role of Rice Husk Biochar in Improving Soil Physical Properties of ex Gold-Mined Soil Yulnafatmawita, Yulnafatmawita; Yasin, Syafrimen; Maira, Lusi
JOURNAL OF TROPICAL SOILS Vol. 28 No. 3: September 2023
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2023.v28i3.127-133

Abstract

Mining causes destructive soil properties, especially soil texture, water retention, and transmission. Applying biochar is the best way to improve soil physical properties. A glasshouse experiment was conducted to evaluate the role of biochar on soil physical properties based on a Completely Randomized Design (CRD) with four replicates. The research comprised six treatments (0, 4, 8, 12, 16, 20 t biochar ha-1). The results showed that the ex-gold-mined soil had coarse soil texture (sandy loam), high Bulk Density (BD) (1.43 g cm-3), low Total Soil Pores (TSP) (46.45%), low soil organic matter (SOM) content (1.27 %), very fast hydraulic conductivity (198.8 cm h-1). After biochar incubation, SOM increased (to 3.11%), soil BD decreased (to 1.16 g cm-3), TSP increased (to 54.17 %), water retention increased (at pF 1.0, 2.0, 2.54, and 4.2), plant available water (PAW) increased (into 8.33 %), and hydraulic conductivity decreased (into 24.70 cm h-1). However, applying 20 t biochar ha-1 still needs to bring the soil physical properties of the ex-gold-mined soil back into suitable soil for farming land.
Kajian Kandungan Unsur Hara Mikro Pada Lahan Bekas Banjir Lahar Dingin Di Nagari Limo Kaum Kabupaten Tanah Datar Hidayati, Helsa; Yasin, Syafrimen; Gusnidar, Gusnidar
Journal Arunasita Vol. 2 No. 3 (2025): Soil Management
Publisher : WBS Laboratory

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.16741921

Abstract

Cold lava floods contain volcano material that is rich in micronutrient which will gradually release through weathering process. The study of micronutrient elements affected by cold lava floods was conducted in Nagari Limo Kaum, Tanah Datar Regency, from October to March 2025. This research was aimed to assess and analyze the content of micronutrients (Fe, Mn, Cu, Zn, Mo and B) in land impacted by cold lava floods in Nagari Limo Kaum, Tanah Datar Regency. The study was carried out using a survey method. Soil samples were collected using purposive sampling from lava deposit (Locations 2, 3, and 4), areas affected by floodwater flow without deposition (Location 5), and unaffected areas (Location 1) as a comparison. Soil samples were collected from 0-20 cm soil depth at each location with 3 replicates. The analyzed parameters included soil pH, cation exchange capacity (CEC), exchangeable aluminum, and micronutrients (Fe, Mn, Cu, Zn, Mo and B). The results showed that increased the micronutrient content and exchangeable aluminium, increased while Zn and B content had low to very high criteria. The chemical properties especially pH and CEC of the soil  at L1 and L5, were lower that those at impacted soils.
TANTANGAN PENGEMBANGAN PADI DIKABUPATEN KEPULAUAN MENTAWAI Azhari, Rafnel; Rusman, Bujang; Kasim, Musliar; Syarif, Auzar; Reflinaldon, Reflinaldon; Yasin, Syafrimen; Zainal, Afrizal; Junaidi, Junaidi
Jurnal AGRISEP JURNAL AGRISEP VOL 16 NO 01 2017 (MARCH)
Publisher : Badan Penerbitan Fakultas Pertanian, Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (276.757 KB) | DOI: 10.31186/jagrisep.16.1.41-56

Abstract

This study aims to identify the problems and develop rice agribusiness in Mentawai Islands from upstream to downstream and formulate appropriate policy recommendations to be implemented. The research location determined by purposive namely in the village Makalo and Malakopa District of South Pagai, Sikakap subdistrict Taikako Village, Village Saumanganya District of North Pagai, Bosua Village and Village Beriulou District of South Sipora, Village Rogdog and Madobag District of South Siberut. Respondents in this study were 30 farmers. Respondents farmers selected by simple random sampling method. The results showed that the majority of rice paddies new openings in six districts consist of peatlands with a depth varying from 0.4- > 2.0 meter, fields new openings that have been implemented in the Mentawai Islands in general can not be expected to result in maximum productivity due to problems of land suitability diverse. Farmers also do not take action appropriate technical culture starting from land preparation, seed selection, weeding, fertilizing and water management. Behaviorally agriculture, farmers in Mentawai Islands is not a society that blends with the culture of rice fields, it is because basically their agricultural base is dry land agriculture with farming patterns. This will certainly give a great challenge and not easy for the cultivation of rice in the Mentawai Islands.
Pengaruh Jarak Tanam dan Jumlah Benih per Lubang Tanam terhadap Pertumbuhan dan Hasil Bawang Merah Asal Biji di Sumatera Barat Atman, Atman; Suliansyah, Irfan; Anwar, Aswaldi; Yasin, Syafrimen
JURNAL AGROTEKNOLOGI UNIVERSITAS ANDALAS Vol 4 No 1 (2022)
Publisher : Jurusan Budidaya Pertanian Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jagur.4.1.44-51.2022

Abstract

The application of true shallot seed cultivation technology with the planting spacing and number of seedlings per planting hole is expected to increase the productivity of shallots in Indonesia. The research was carried out at KP Sukarami-AIAT West Sumatra from January to June 2021. The aim of the study was to obtain recommendations for the appropriate planting spacing and number of seedlings per planting hole in increasing the growth and yield of true shallot seed in West Sumatra. The study used a 2-factor factorial design in a randomized block with 3 replications. The first factor is the planting spacing (JT), which consists of 3 types, namely: JT1 (10 cm x 10 cm), JT2 (10 cm x 15 cm), and JT3 (15 cm x 15 cm). The second factor is the number of seedlings per planting hole (JB) which consists of 5 types, namely: JB1 (1 seedling), JB2 (2 seedlings), JB3 (3 seedlings), and JB4 (4 seedlings). The results showed that there was not significant interaction between the planting spacing and the number of seedlings per planting hole on the yields of true shallot seed. The highly significant interaction was only found in the growth components and yield components. The best planting spacing is 10 cm x 10 cm and 10 cm x 15 cm, while the best number of seedlings is 1-2 seedlings per planting hole. It is recommended to use a planting spacing of 10 cm x 10 cm or 10 cm x 15 cm with 1-2 seedlings per planting hole in true shallot seed in the highlands of West Sumatra.
DAMPAK PENGGUNAAN LAHAN TERHADAP STOK KARBON DI TANAH GAMBUT: STUDI PERBANDINGAN DAN IMPLIKASI KEBIJAKAN Ilmi, Rozatul; Hermansah; Yulnafatmawita; Yasin, Syafrimen
JTSL (Jurnal Tanah dan Sumberdaya Lahan) Vol. 13 No. 1 (2026)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2026.013.1.1

Abstract

Tropical peatlands are among the largest carbon stocks on earth, but also the most vulnerable to anthropogenic disturbances. This study aims to analyze the impacts of land-use change on carbon stocks in peatlands, focusing on conversion to plantations, agriculture, and infrastructure, as well as to evaluate the effectiveness of restoration strategies and protection policies. Using a systematic review approach of 50 recent scientific publications (2010–2025), the results show that peatland conversion causes large amounts of carbon release, ranging from 70–120 tons of CO₂ per hectare per year, accompanied by land subsidence of up to 7 cm per year. Drainage and land fires are the main factors accelerating carbon emissions. In contrast, restoration efforts through rewetting and revegetation have been shown to reduce emissions by up to 65% and increase long-term carbon accumulation. The success of this strategy is greatly influenced by the biophysical conditions of the land, policy support, and local community participation. This study recommends the need for an integrated approach that includes moratoriums, economic incentives, legal strengthening, and technology-based monitoring as strategic steps in protecting carbon stocks and mitigating climate change.
PERBANDINGAN KONSENTRASI HARA HARA DAUN KELAPA SAWIT (Elaeis guineensis Jacq.) USIA 6 DAN 8 TAHUN Oksana, Oksana; Hermansah, Hermansah; Agustian, Agustian; Yasin, Syafrimen
Jurnal Agroteknologi Vol 16, No 2 (2026): Februari 2026
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/ja.v16i2.38079

Abstract

Oil palm productivity is closely linked to the nutrient status of its leaves, which serve as a reliable indicator of plant health and fertilizer requirements. Comparing leaf nutrient levels at different ages, such as 6 and 8 years, provides valuable insights into the dynamics of nutrient uptake and the optimization of fertilization strategies for sustainable yield. This study was conducted to assessing the macronutrient adequacy status of oil palm leaves based on diagnostic standards, and knowing the differences in these nutrients at ages 6 and 8 years. Leaf samples were taken from Kampar District, Riau Province by systematic random sampling of 14 oil palm trees to represent 20 ha of each age class. Leaf samples are leaves located on the 17th leaf sheath in the oil palm leaf phyllotaxis system. Analysis of plant nutrient levels using the X-ray fluorescence (XRF) series PAnalitycal Epsilon 3 method except for N-total with Kjeldhal (% dry weight). Results revealed that 6-year-old oil palms had optimal amounts of N, K, Ca, and Mg, along with elevated P and S. Conversely, 8-year-old palms showed deficiencies in N, K, Mg, and S, but optimal level of Ca and high P levels. T-test analysis (P value < 0.05) indicated significant differences in N, K, and S between the two age groups, while P, Ca, and Mg did not differ significantly.
Co-Authors . Adrinal . Burbey . DARMAWAN . Gusmini . Junaidi . Junaidi . Reflinaldon Ade Candra Afrizal Zainal Agustian Agustian Agustian Agustian Agustian Agustian Andhika, Rantau Annisa Fitri Anwar, Aswaldi Atman Atman Atman Atman Atman Atman, Atman Auzar Syarif Azwar Rasyidin Bori Heria Fadli Bujang Rusman Burbey Burbey Burbey, . Darfis, Irwan Darmawan Darmawan Darmawan, Darmawan David David Dedy Iskandar Dewi Rezki Dian Fiantis Dini Hervani Edri Yeni ekawati, fitri Erick Wahyudi Erick Yuhardi Erick Yuhardi Gusmini Gusnidar, G Harianti, Mimien Hasnelly Hasnelly Hasnelly Hasnelly Herlena, Silvia Hermansah Hermansah Hermansah, Hermansah Herviyanti Herviyanti Herviyanti Hidayati, Helsa Ilmi, Rozatul Indra Dwipa Irfan Suliansyah Junaidi Junaidi Junaidi Junaidi Juwita, Pitri Kurnianto, Reza Tri Lita, Arestha Leo Lusi Maira M. Lucky Masunaga, Tsugiyuki Maulana, Amsar Mimien Harianti Muhammad Lucky Munzir Busniah Musliar Kasim MY SYAHRAWATI Nasution, Nur Fadillah Novalina Novalina Nurhajati Hakim Oksana Oksana Prasetio, Teguh Budi Purwoko, Agus Rafnel Azhari Rantau Andhika Resi Ezrari RR. Ella Evrita Hestiandari Ruhaimah Ruhaimah Rusman, Bujang Saleh, Sulaiman Sandi, Nofrita Silvia Herlena Silvia Permata Sari Sisilia Rosana Siska Amelia Sulaiman Saleh Teguh Budi Prasetyo Tengku Riza Zarzani N Tsugiyuki Masunaga Tutik Oktaviana Ulfia Fadilla Wahyudi, Erick Yadi Jufri Yulnafatmawita Yulnafatmawita Yulnafatmawita Yulnafatmawita Yulnafatmawita Yulnafatmawita, . Zainal, Afrizal Zulkarnaini Zulkarnaini