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All Journal Jurnal Solum Jurnal Pengabdian kepada Masyarakat Nusantara (JPkMN)
Muhammad Nuriman
Universitas Tanjungpura
Agriculture, Biological Sciences & Forestry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Environmental Science Social Sciences

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Rasio Fraksi Debu-Liat Sebagai Indikator Perkembangan dan Kesuburan Tanah Muhammad Nuriman; Rini Hazriani; Tri Tiana Ahmadi Putri
Jurnal Solum Vol 19, No 1 (2022)
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (222.255 KB) | DOI: 10.25077/jsolum.19.1.24-33.2022

Abstract

Soil horizon development is a determinant of soil type and characteristics. The morphology reflects the stages of soil formation by observing the genetic horizon. The genetic horizon is a soil layer distinguished by symbols (O, A, E, B, C, and R). Soil formation can also be obtained from the silt-clay fraction as part of the soil texture observation. The silt-clay ratio can reflect the soil morphology and genesis. This study aimed to determine the silt-clay ratio as an indicator of soil development and fertility. This study was conducted in 2020 in Manismata Sub-District West Kalimantan Province with soil parent material derived from sedimentary rocks with the topography of 0-3%, 3-8%, and 8-15%. The observations were carried out on five soil profiles in terms of morphology, texture, organic matter, nitrogen, CEC, and Ca. Based on the results, entisol (regosol) had A-C genetic horizon and silt-clay ratio >2.73. Meanwhile, inceptisol (kambisol) had an A-B-C genetic horizon and a silt-clay ratio of 1.44 – 2.24. The silt-clay ratio in entisol had a significant influence on organic matter, CEC, and Ca of 75.79%, 86.98%, and 85.14%, respectively. Silt-clay ratio in inceptisol had a significant influence on organic matter, CEC, and Nitrogen. 3-8% inceptisol had a negative relationship of 67.25%, 52.33% and 84.59%, respectively. Meanwhile, 8-15% of Kambisol had a positive relationship with R2 of 69.08%, 54.49%, and 66.61%, respectively. The difference in the relationship (negative, positive) on inceptisol was due to 3-8% inceptisols having lithologic discontinuities. Thus, it can be concluded that the silt-clay ratio can be an indicator of soil development and fertility.Key words : Fertility, Morphogenesis, Silt/Clay, Soil Weathering
Upaya Peningkatan Produktivitas Tanaman Pangan Melalui Pendidikan Diagnosa Visual Hara Tanaman Riduansyah Riduansyah; Denah Suswati; Muhammad Nuriman; Romiyanto Romiyanto
Jurnal Pengabdian kepada Masyarakat Nusantara Vol. 4 No. 4 (2023): Jurnal Pengabdian kepada Masyarakat Nusantara (JPkMN)
Publisher : Sistem Informasi dan Teknologi (Sisfokomtek)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55338/jpkmn.v4i4.2223

Abstract

Increasing farmers' human resources in evaluating plant nutrients is an important part of increasing plant productivity, family food security and farmer income. Therefore, we researchers, carry out training activities for farming communities. The training was held in the Pal Sembilan village office hall, Sungai Kakap District. Attended by village officials, heads of farmer groups and members of farmer groups, Pal Sembilan village with a total of 30 people. The training was carried out by discussing procedures for visually observing deficiencies and excesses of plant nutrients. Farmers gain knowledge through short lectures, brochures with visual images of plant nutrients, and land management recommendations. Recommendations for improvement on land that has a pH of 4.5 and land conditions that are characterized by oxidized Fe, Al, and Mn are to wash the land first, or rinse the land first from Fe, Al, and Mn poisoning, and the recommended application of dolomite is 2 tons. /ha for land that does not have water management, during the process of increasing soil pH, it is not recommended to use N fertilizer, and spraying fungicides to reduce fungi that previously lived in acidic soil conditions. The extension location has symptoms of potassium deficiency, so it is recommended to provide rice straw to reduce the need for inorganic potassium fertilizer by 70-90%.
Co-Authors Denah Suswati Riduansyah Riduansyah Rini Hazriani Romiyanto Romiyanto Tri Tiana Ahmadi Putri