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Karakteristik Kimia Oxisol Yang Diameliorasi Dengan Abu Vulkanik Marapi Dan Biochar Kulit Kopi Monikasari, Moli; Gusmini
Journal Arunasita Vol. 1 No. 1 (2024): Pangan dan Tantangan dalam Era Digital
Publisher : WBS Laboratory

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.15315208

Abstract

Tanah marginal memiliki potensi besar untuk dikembangkan meskipun menghadapi kendala seperti bahan organik yang rendah dan keasaman tinggi. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian abu gunung Marapi dan biochar kulit kopi terhadap karakteristik kimia tanah Oxisol. Penelitian ini menggunakan metode rancangan acak lengkap (RAL) dengan menginkubasikan Oxisol dengan amelioran menggunakan 3 ulangan selama 1 bulan. Perlakuan-perlakuan yang diberikan yaitu kontrol (Oxisol tanpa amelioran = K), Oxisol + abu gunung Marapi setara 5 ton/ha (A), dan Oxisol + biochar kulit kopi setara 5 ton/ha (B). Analisis kimia tanah untuk penelitian ini meliputi pengukuran pH tanah dengan perbedaan perbandingan tanah dengan pelarut (1:5 dan 1:10) dan lama pengocokan (30 menit dan 60 menit); P-tersedia metode Olsen dan Mehlik; KTK (ammonium asetat pH 7); % C-organik (Walkey and Black); % N-total (Khjedal); dan % C/N Hasil menunjukkan perubahan signifikan pada karakteristik kimia tanah, terutama peningkatan pH, KTK, dan P-tersedia.
Characteristics of Agricultural Land in the Floodplain Area of the Tarusan Watershed, Pesisir Selatan, West Sumatra Sandi, Nofrita; Gusmini; Yasin, Syafrimen; Herviyanti; Prasetio, Teguh Budi; Rasyidin, Azwar; Nasution, Nur Fadillah
TERRA : Journal of Land Restoration Vol. 8 No. 1 (2025)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.8.1.1-9

Abstract

The numerous rivers and high rainfall in West Sumatra often lead to flooding, which affects several land uses such as settlements, plantations, and agriculture. During floods, water transports various materials from upstream to downstream, such as sand, mud, and clay, which are deposited in certain riverbanks. This study aimed to examine the soil fertility characteristics in the floodplain area. The method used in this research was a survey method with purposive random sampling at two soil depths: 0 – 30 cm and 30 – 60 cm. Samples were taken from two land uses: dryland agriculture and wetland agriculture. The parameters analyzed were texture, organic carbon, bulk density, total pore space, pH in H2O, available P, total N, and exchangeable potassium. The results of the study for each parameter showed that the soil texture in dryland agriculture was sandy loam, while in wetland agriculture, it was clay loam. Organic carbon was classified as low (1.31%–1.62%). Wetland soils had higher porosity (57.67%–61.40%) and lower bulk density (1.01–1.10 g/cm³) compared to dryland soils. Soil pH was acidic (4.52–4.95). Available P, total N, and exchangeable potassium were higher in wetland soils than in dryland soils. In conclusion, the results of the study indicate that the soil properties, both physical and chemical, in wetland agriculture were better than in dryland agriculture, although no significant differences were found.  
Pengembangan Agrowisata Kampung Tapi Menuju Ekonomi Keberlanjutan Di Nagari Kamang Tangah Anam Suku, Agam Bahari, Asniati; Gusmini; Luthan, Elvira; Novfirman; Ona Guserike Afner, Synthia; Esti Rahmaningsih, Dwi
KOMUNITA: Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol 4 No 2 (2025): Mei
Publisher : PELITA NUSA TENGGARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60004/komunita.v4i2.168

Abstract

This service program aims to develop Kampung Tapi as an agro-tourism village based on sustainable integrated farming. Kampung Tapi has great potential with fertile agricultural land, biodiversity, and rich local culture. However, the local community faces various challenges, such as unproductive yard land, limited skills in marketing products, and high dependence on the traditional agricultural sector. To address these issues, this program uses a participatory approach method through site surveys, socialization, training, mentoring, and periodic evaluation. The training provided includes integrated agricultural management techniques based on zero waste, making organic fertilizer from agricultural waste, and digital marketing through packaging and social media. This activity actively involves the Dasawisma group to ensure that the training material is not only understood, but can also be applied in daily life. It is hoped that through this service program, a significant increase in the technical, managerial, and marketing skills of the Dasawisma group and also the community of Kampung Tapi will be achieved. In addition, the active participation of the community in the management of local products becomes the main attraction of Kampung Tapi agrotourism, expanding the marketing network, and increasing income. This program not only provides economic benefits to the community, but also contributes to environmental sustainability and the development of Kampung Tapi as a leading agro-tourism destination. With the synergy between the agriculture and tourism sectors, Kampung Tapi is expected to become a model of a sustainable and inspiring agritourism village
Karakteristik Sifat Kimia Tanah Dan Kandungan Merkuri Pada Lahan Bekas Tambang Emas Dan Lahan Perkebunan Kelapa Sawit (Elaeis Guineensis Jacq.) David Willy Saputra Manullang; Gusmini; Rezki, Dewi
Jurnal Riset Perkebunan Vol. 2 No. 1 (2021): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.2.1.1-11.2021

Abstract

The present study was conducted in Tebing Tinggi Village, Pulau Punjung Sub-district, Dharmasraya District was motivated by a desire to exploit land resources, especially open access land that was formerly a gold mine by cultivating oil palm plants. The objectives of this study were to determine the characteristics of soil chemical properties, the soil fertility level, and the level of mercury (Hg) contamination in former gold mining land by compared with the soil chemical fertility of oil palm plantations. The research method was a survey by purposive sampling. The Soil sampling for analysis of soil chemical properties was carried out by drilling of 0-40 cm deep with 12 sample points divided into 4 locations, where 3 locations in the former gold mine area that were grouped into three segments, namely segments 1, 2 and 3 and one location was in oil palm land. The parameters of soil chemical properties observed were pH, Al-dd, C-organic, C / N Ratio, N, P, K and Hg (Mercury). The results of this research, shows that the characteristics of soil chemical properties in the former gold mining area have decreased the level of soil fertility, characterized by the very low pH value and C-organic content, ​​so that the nutrients contained in the land are very limited when compared to the soil fertility in oil palm land. This is indicated by the fact that the oil palm land has a high C-organic content and a moderate level of N-total content. The utilization of the land resources of the former gold mine, it is necessary to do land improvementsin terms of soil physically, chemically and biologically.
Improvement Of Ex-Gold Mining Soil Through The Application Of Rubber Leaf Litter Compost And Biochar Of Oil Palm Empty Fruit Bunches On The Growth Of Rubber Seedlings (Hevea Brasiliensis Muell. Arg.) Pb-260 Clone Febriana, Widia; Gusmini; Yulistriani
Jurnal Riset Perkebunan Vol. 4 No. 1 (2023): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.4.1.53-64.2023

Abstract

Land damage caused by gold mining activities is mainly due to soil contamination by Mercury (Hg). Ex-gold mines are soils that have poor chemical, biological, and physical properties, resulting in a very low level of soil fertility. The objective of this study was to determine the effect of rubber leaf litter compost and biochar of oil palm empty fruit bunches to obtain the best dose recommendation in improving the ex-gold mining soil on the growth of rubber seedlings (Hevea brasiliensis Muell. Arg.). This study was designed by a completely randomized design consisted of 7 treatments and repeated 3 times. The treatments were rubber leaf litter compost at a dose of 10 tons/ha and 20 tons/ha, biochar of oil palm empty fruit bunches at a dose of 10 tons/ha and 20 tons/ha, combination of rubber leaf litter compost and biochar of oil palm empty fruit bunches at a dose of 10 tons/ha and 20 tons/ha, respectively. The results showed that the combination treatment of rubber leaf litter compost and biochar of oil palm empty fruit bunches at a dose of 20 tons/ha resulted in a soil pH value of 4,85, Al-dd 0,42 cmol/kg, C-organik 0,92%, N-total 0,053%, C/N 11,25, P-available 122,69 ppm, K-dd 0,40 cmol/kg, and reducing soil mercury by 0,01 ppm. The growth of shoot height and leaves number of rubber seedlings was obtained by the application of biochar of oil palm empty fruit bunches at a best dose of 20 tons/ha. In addition, the treatment of rubber leaf litter compost at a dose of 20 tons/ha was able to increase the leaf width of rubber seedlings (h. brasiliensis Muell. Arg.).
Pengaruh Biochar Kulit Kopi dan Abu Vulkanis terhadap Ketersediaan Fosfor dan Nitrogen pada Entisol Wiyatri Tapiani; Gusmini; Adrinal
Berkala Ilmiah Pertanian Vol. 8 No. 4 (2025): November 2025 (in press)
Publisher : Jember University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bip.v8i4.53733

Abstract

Entisol merupakan tanah muda dengan tingkat kesuburan rendah akibat terbatasnya bahan organik dan unsur hara esensial seperti nitrogen (N) dan fosfor (P). Penelitian ini bertujuan membandingkan pengaruh penambahan biochar kulit kopi dan abu vulkanis terhadap beberapa sifat kimia Entisol, khususnya ketersediaan P dan N. Percobaan disusun menggunakan Rancangan Acak Lengkap (RAL) dengan tiga perlakuan dan tiga ulangan: tanah tanpa perlakuan (K), tanah + abu vulkanis 5 t ha⁻¹ (A), dan tanah + biochar kulit kopi 5 t ha⁻¹ (B).  Hasil penelitian menunjukkan bahwa abu vulkanis meningkatkan pH tanah paling tinggi (hingga 7,4) dan memberikan peningkatan terbesar terhadap P-tersedia sebesar 0,39% (Olsen) dan 143,5% (Mehlich). Sebaliknya, biochar kulit kopi memberikan peningkatan lebih besar pada C-organik (11,63%), N-total (50%), dan KTK (13,60%) dibanding abu vulkanis yang masing-masing hanya naik 2,32% dan 6,36%. Penelitian ini menyimpulkan bahwa abu vulkanis lebih efektif meningkatkan pH dan P-tersedia, sedangkan biochar kulit kopi lebih unggul dalam memperbaiki C-organik, N-total, dan KTK tanah. Ameliorasi dengan biochar kulit kopi dan abu vulkanis dapat menjadi strategi efektif untuk memperbaiki kualitas dan kesuburan Entisol, meskipun efek kumulatifnya membutuhkan waktu serta tambahan sumber bahan organik lainnya untuk hasil yang lebih optimal. Penelitian lanjutan disarankan untuk mengeksplorasi dampak kumulatif dan jangka panjang dari perlakuan ini pada berbagai kondisi tanah dan iklim.
Pengaruh Pemberian Solid Decanter dan Mikoriza Arbuskula terhadap Pertumbuhan Bibit Kelapa Sawit Pre Nursery di Tanah Bekas Tambang Biji Besi Adrinal; Widia, Yesi; Putri, Elsa Loita; Edwin; Gusmini
Jurnal Ilmu Pertanian Indonesia Vol. 0 No. 00 (2025): inpress
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian ini mengenai pengaruh solid decanter dan mikoriza arbuskula terhadap pertumbuhan bibit kelapa sawit di pre nursery pada tanah bekas tambang biji besi. Tingkat kesuburan tanah sangat dipengaruhi oleh sifat kimia tanahnya. Sifat kimia tanah dapat diperbaiki dengan menambahkan solid decanter dan mikoriza arbuskula. Tujuan penelitian untuk mendapatkan interaksi anatara solid decanter dan mikoriza arbuskula serta mendapatkan dosis terbaik solid decanter dan mikoriza arbuskula terhadap pertumbuhan bibit kelapa sawit di pre nursery. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) faktorial yang terdiri dari dua faktor dan empat taraf perlakuan. Faktor pertama adalah solid decanter ( 0 g, 200 g, 300 g, dan 450 g) dan faktor kedua mikoriza arbuskula ( 0 g/polybag, 5 g/polybag, 10 g/polybag dan 15 g/polybag). Variabel yang diamati adalah analisis tanah awal, analisis solid decanter, analisis tanah akhir, tinggi bibit, diameter batang, jumlah daun, panjang helaian daun, bobot segar bibit, dan bobot kering bibit. Hasil penelitian menunjukan bahwa terjadi interaksi pemberian solid decanter dan mikoriza arbuskula terhadap panjang helaian daun, berat segar bibit, dan berat kering bibit. Dosis perlakuan dengan pemberian 450 g solid decanter dan 5 g/polybag mikoriza arbuskula menunjukan pertumbuhan terbaik pada setiap variabel.