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All Journal Jurnal Solum JOURNAL ONLINE OF PHYSICS Jurnal Media Pertanian Jurnal Pembangunan Berkelanjutan Jurnal Agroecotania : Publikasi Nasional Ilmu Budidaya Pertanian Jurnal Silva Tropika Jurnal Talenta Sipil International Journal of Hydrological and Environmental for Sustainability Jurnal Karya Abdi Masyarakat
Ermadani Ermadani
Study Program of Agroecotechnology, Faculty of Agriculture, University of Jambi Kampus Pinang Masak, Jalan Raya Jambi-Muaro Bulian Km 15 Mendalo Darat Jambi, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Public Health Social Sciences

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Journal : Jurnal Solum

 1 
DYNAMICS OF SOIL ORGANIC CARBON FRACTIONS UNDER DIFFERENT LAND MANAGEMENT IN WET TROPICAL AREAS Ermadani Ermadani; Hermansah Hermansah; Yulnafatmawita Yulnafatmawita; Auzar Syarif
Jurnal Solum Vol 15, No 1 (2018): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (538.964 KB) | DOI: 10.25077/jsolum.15.1.26-39.2018

Abstract

Karbon (C) organik tanah yang merupakan bagian utama dari bahan organik tanah mengalami penurunan sebagai akibat perubahan-perubahan penggunaan lahan dari kondisi alami menjadi lahan-lahan pertanian. Penurunan C organik tanah menjadi semakin besar karena masukan bahan organik yang rendah dan bila penurunan ini. berlangsung terus menerus  maka pada akhirnya menyebabkan degradasi tanah. Artikel ini membahas peranan, dekomposisi dan struktur dari bahan organik tanah dalam hubungannya dengan dinamika fraksi C organik tanah pada pengelolaan lahan yang berbeda di daerah tropis basah. Perubahan penggunaan dan pengelolaan lahan menyebabkan terjadinya perubahan C organik total dan fraksi-fraksi C organik labil dan stabil tanah. Beberapa penelitian telah menunjukkan bahwa fraksi C organik labil seperti C organik partikulat lebih responsif terhadap perubahan-perubahan dari pengelolaan tanah dan merupakan suatu indikator yang sensitif dari kualitas tanah. Disamping itu fraksi C organik stabil seperti asam humat yang mengalami perubahan karena praktek-praktek  pengelolaan tanah dapat digunakan untuk menilai kapasitas potensial tanah sebagai penyimpan karbon. Perubahan-perubahan penggunaan lahan dan pengelolaan tanah mempunyai pengaruh negatif dan positif terhadap C organik total, fraksi C organik labil (C organik partikulat) dan fraksi C organik stabil (asam humat). Praktek-praktek pengelolaan yang dapat mempertahankan dan memperbaiki fraksi-fraksi C organik tanah  meliputi sistem agroforestri,  aplikasi pupuk organik, mulsa dan pengembalian sisa tanaman ke dalam tanah. Fraksi C organik partikulat dan asam humat menunjukkan perubahan-perubahan yang lebih besar dibandingkan C organik total akibat perubahan-perubahan penggunaan lahan dan praktek-praktek pengelolaan tanah di daerah tropis basah.Key words : Fraksi C organik, penggunaan lahan, tropis basah
PENGARUH APLIKASI BIOCHAR DAN PUPUK FOSFAT TERHADAP PERTUMBUHAN DAN HASIL KEDELAI (Glycine max (L.) Merril) DI TANAH ULTISOL Adni Mahdhar; Ermadani Ermadani; Aryunis Aryunis
Jurnal Solum Vol 18, No 2 (2021)
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (191.545 KB) | DOI: 10.25077/jsolum.18.2.45-65.2021

Abstract

Rice waste has the potential to be used as a biochar raw material which can be used to overcome constraints on Ultisol soils. This study aims to determine the effect of the application of biochar from rice straw and phosphate fertilizers which give growth and yield of soybeans in Ultisols soil. The experimental design used was a randomized block design with a factorial pattern consisting of 2 factors and 3 replications, the first factor was the input of biochar (B) at a dose of 15 tonnes ha-1consisting of: b0 = no biochar, b1 = rice husk biochar 15 ton ha-1, b2 = rice straw biochar 15 ton ha-1, b3 = husk and rice straw biochar 15 ton ha-1. The second factor is the dosage of phosphate fertilizer (P) consisting of: p0 = without phosphate fertilizer, p1 = 60 kg ha-1 TSP (50% of recommendation), p2 = 120 kg ha-1 TSP (100% of recommendation). The results showed that there was no interaction between biochar and phosphate fertilizer applications on plant height, number of flowers per plant, number of productive branches per plant, percentage of fruit set per plant and crop index of soybean. However, the application of phosphate fertilizers significantly increased the number of flowers. There is an interaction between the application of biochar and phosphate fertilizers on leaf area, number of pods per plant, number of pods contained per plant, dry weight of biomass per plant, dry weight of seeds per plant, yield per hectare, net assimilation rate and uptake of plant phosphorus. Application of rice straw biochar with a dose of 15 tonnes ha-1 and a dose of phosphate fertilizer 60 kg ha-1 increased leaf area 36.74%, number of pods per plant 39.96%, number of filled pods per plant 47.61%, dry weight of biomass per plant 46.82%, seed dry weight per plant 52.65%, yield per hectare 54.68%, net assimilation rate 182.38% and plant phosphorus uptake 72.32%.Key words: biochar, P-fertilizer, rice husk, straw, soya, Ultisols
KAJIAN BEBERAPA KARAKTERISTIK TANAH GAMBUT PADA LAHAN TERBAKAR DAN TIDAK TERBAKAR DI PERKEBUNAN KELAPA SAWIT Virmanto, Dedy; Sa'ad, Asmadi; Arsyad, AR; Ermadani, Ermadani
Jurnal Solum Vol 19, No 2 (2022)
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.19.2.43-52.2022

Abstract

The excessive drainage system on peat causes the peat to dry out, especially during the dry season. This condition triggers the occurrence of extensive and intensive land fires, which causes changes in the characteristics of peat soils. This study aimed to study the characteristics of peat soil consisting of several physical and chemical properties of peat on burned and unburned land in oil palm plantations in Pematang Raman Village, Kumpeh District, Muaro Jambi Regency. The research was carried out using a survey method. Observation block area was determined by purposive sampling based on adjacent land conditions (burned and unburned). Observation points were set on a grid that was perpendicular to the canal with a horizontal distance of 200 m from 1000 m block length and a vertical distance of 50 m from 300 m block width with an area of each block + 30 ha. The time interval between the fire incident and sampling was 17 months. Soil samples were taken at a depth of 0-20 cm and 20-40 cm. The results showed that the physical and chemical properties of burnt and unburned peat showed differences in the level of maturity, physical and chemical properties of the soil. Burnt peat soil had a faster weathering rate as indicated by the dominance of the sapric maturity level in the top layer (0-20 cm) and below the surface (20-40 cm). The bulk density, ash content, and pH of the burned peat soil were higher, while the C-organic content, total N, C/N, and water content were lower.Keywords: burned; chemical and physical properties; peat soils
KAJIAN BEBERAPA KARAKTERISTIK TANAH GAMBUT PADA LAHAN TERBAKAR DAN TIDAK TERBAKAR DI PERKEBUNAN KELAPA SAWIT Virmanto, Dedy; Sa'ad, Asmadi; Arsyad, AR; Ermadani, Ermadani
Jurnal Solum Vol. 19 No. 2 (2022)
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.19.2.43-52.2022

Abstract

The excessive drainage system on peat causes the peat to dry out, especially during the dry season. This condition triggers the occurrence of extensive and intensive land fires, which causes changes in the characteristics of peat soils. This study aimed to study the characteristics of peat soil consisting of several physical and chemical properties of peat on burned and unburned land in oil palm plantations in Pematang Raman Village, Kumpeh District, Muaro Jambi Regency. The research was carried out using a survey method. Observation block area was determined by purposive sampling based on adjacent land conditions (burned and unburned). Observation points were set on a grid that was perpendicular to the canal with a horizontal distance of 200 m from 1000 m block length and a vertical distance of 50 m from 300 m block width with an area of each block + 30 ha. The time interval between the fire incident and sampling was 17 months. Soil samples were taken at a depth of 0-20 cm and 20-40 cm. The results showed that the physical and chemical properties of burnt and unburned peat showed differences in the level of maturity, physical and chemical properties of the soil. Burnt peat soil had a faster weathering rate as indicated by the dominance of the sapric maturity level in the top layer (0-20 cm) and below the surface (20-40 cm). The bulk density, ash content, and pH of the burned peat soil were higher, while the C-organic content, total N, C/N, and water content were lower.Keywords: burned; chemical and physical properties; peat soils
Co-Authors -, Maison Abdul Muhlisin adifa, Fitri Adni Mahdhar Alfernando, Oki Alrizal, Alrizal Amanda, Dwi Rahma Arsyad, AR Aryunis Aryunis Asmadi Saad Auzar Syarif Fetty Febriasti Bahar Galih Prabasari, Ira Gindo Tampubolon Hasriati Nasution Hermansah Hermansah Irianto Irianto Lucky Zaehir Maulana Madyawati Latief Mulya, Anugrah Hadi Pebralia, Jesi Resta, Ichy Lucya Restu Ramadhan Riany, Hesti Ripil Hadi Rosyani Sa'ad, Asmadi Sahera Sahera Samsidar Samsidar Sinambela, Esther Leoni Suryadri, Hadistya Virmanto, Dedy Yoza Fendriani Yulnafatmawita Yulnafatmawita Zuhdi, Mohd.