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All Journal Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) TERRA : Journal of Land Restoration Jurnal Riset Perkebunan (JRP)
Herviyanti
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Environmental Science

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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.  
Pengaruh Kompos, Bahan Humat dari Batubara tidak produktif dan Pupuk Buatan Terhadap Bibit Kakao (Theobroma cacao) pada Oxisol Dewi rezki; Siska Efendi; Herviyanti
Jurnal Riset Perkebunan Vol. 3 No. 1 (2022): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.3.1.38-47.2022

Abstract

Organic matter has a very important role in determining the level of soil fertility, especially in marginal soils such as Oxisol which is widespread in Indonesia. Organic matter that is commonly used requires large amounts and has the ability to react relatively slowly in the soil. Therefore, it is necessary to make efforts to obtain organic material that reacts quickly in the soil, such as humic material extracted from lignite. In this study, cocoa (Theobroma cacao) was used as an indicator plant. Cocoa is one of the plantation commodities that has a fairly important role in the national economy, especially as foreign exchange for the country and has a relatively stable price. This research was conducted in the form of a pot experiment using a 2 x 4 x 4 factorial design with 3 replications in a divided plot design, so that 32 treatments and 96 experimental units were obtained. From the research results obtained data that the addition of humic materials and compost up to a dose of 4% C-organic combined with artificial fertilizers can increase the availability of nutrients for cocoa seedlings in Oxisol. The best dose of each treatment was the addition of humic material at a dose of 4% C-organic combined with artificial fertilizer 50% of the recommendation and the addition of compost at a dose of 4% C-organic combined with artificial fertilizer 50% of the recommendation. The addition of organic matter can reduce the use of artificial fertilizers up to 50% of the recommendation. The addition of humic materials from unproductive coal can increase the availability of nutrients in Oxisol. Unproductive coal has the potential to increase Oxisol soil fertility.
Isothermal Modelling of Glyphosate Herbicide Adsorption Using Biochar andHumic Substances from Palm Oil Mill Waste Athiyya, Salma; Yulnafatmawita; Amsar Maulana; Herviyanti
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 15 No 6 (2025): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.15.6.947

Abstract

Penggunaan herbisida glifosat secara luas menimbulkan masalah lingkungan karena sifatnya yang persisten dan berpotensi mencemari sistem air dan tanah. Mengoptimalkan pengembangan metode adsorpsi yang ramah lingkungan dengan memanfaatkan limbah pabrik kelapa sawit melalui konversi menjadi biochar dan zat humat, dapat mengurangi polusi dan mendukung pengelolaan limbah yang berkelanjutan. Penelitian ini telah melakukan pemodelan adsorpsi isotermal herbisida glifosat menggunakan konversi limbah pabrik kelapa sawit dalam bentuk larutan. Adsorpsi isotermal herbisida glifosat dengan metode kesetimbangan batch. Adsorpsi herbisida glifosat pada limbah pabrik kelapa sawit yang dikonversi dalam bentuk larutan menunjukkan peningkatan dengan meningkatnya konsentrasi glifosat dan pH. Kapasitas adsorpsi dan koefisien herbisida glifosat dengan formulasi 25% biochar-tandan kosong kelapa sawit dan 75% zat humat-padatan dekanter basah adalah 750,53 mg g-1 dan 93,70 L g-1 pada pH 5,2 dan konsentrasi 20,025 mg L-1. Isoterm adsorpsi herbisida glifosat terjadi pada model Freundlich dan Langmuir (Langmuir > Freundlich) di mana, model Freundlich (y = -0,9563x + 4,9729; R² = 0,4961) dengan nilai n (1,04); KF sebesar 93.950,69 (L mg-1)1/n, dan 1/n sebesar 0,96. Sementara itu, model Langmuir (y = 2,4112x + 0,0002; R² = 0,9785), dengan Qm rata-rata 5.000 mg g-1; KL sebesar 0,0001 L mg-1 dan RL sebesar 0,0002 (menguntungkan). Aplikasi biochar 25% tandan kosong kelapa sawit dan formulasi padatan dekanter basah 75% zat humat dari biokonversi limbah pabrik kelapa sawit, berpotensi mengurangi pencemaran/polusi glifosat pada lahan perkebunan kelapa sawit sebagai pembenah tanah dan mendukung pengelolaan limbah berkelanjutan.
Co-Authors Amsar Maulana Athiyya, Salma Azwar Rasyidin Dewi Rezki Gusmini Nasution, Nur Fadillah Prasetio, Teguh Budi Sandi, Nofrita Siska Efendi Syafrimen Yasin Yulnafatmawita