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PENGUJIAN TIGA METODE PENGUKURAN BOBOT ISI PADA TANAH GAMBUT Sinaga, Christina; Nusantara, Rossie Wiedya; Gusmayanti, Evi; Anshari, Gusti Zakaria
Jurnal Tanah dan Sumberdaya Lahan Vol. 11 No. 2 (2024)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2024.011.2.9

Abstract

This research aims to compare the methods of bulk density measurements in peat soils. The methods are ring sample, peat auger, and syringe. The research was conducted in peat soils in Pontianak City. The research was carried out from June to December 2023. Peat samples were the surface peat (0-10 cm). The samples were collected from five plots, and five replications. On average, the value of bulk density measured by the ring sample was 0.27 g cm-3, which is significantly different from bulk density values measured by the peat auger and syringe: 0.11 g cm-3 and 0.09 g cm-3, respectively. Bulk densities of peat auger and syringe are statistically indifferent. Soil compaction during sampling causes the ring sample's high bulk density value. Accordingly, carbon stock calculation based on ring sample bulk density is significantly higher than carbon stocks calculated by bulk densities of auger and syringe. The bulk density measurement with a peat auger took longer because a water displacement approach must measure the sample volume. Collecting bulk-density samples with a syringe is the easiest and fastest. The volume of the syringe sample is only 10 cm3, and the sample can be taken until the mineral substratum. The number of sample collected by syringe can be significantly increased at 5 cm sampling interval, or equals to 10 sub-samples per 50 cm peat core. Pearson linear correlations of these three methods are sufficiently strong.
Uji Sifat Fisika Tanah Pada Lahan Kebun Campuran dan Sawah Pasang Surut di Desa Wajok Hilir, Kabupaten Mempawah Alkam, Iswahyudi Yuas; Nusantara, Rossie Wiedya; Anshari, Gusti Zakaria
Pedontropika: Jurnal Ilmu Tanah dan Sumber Daya Lahan Vol. 12 No. 1 (2026): Februari
Publisher : Soil Science Department, Faculty of Agriculture, Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/pedontropika.v12i1.95877

Abstract

Tidal land has great potential for agricultural development, but the characteristics of its soil physical properties can be affected by seawater fluctuations. This study aims to examine the physical properties of soil in two types of land use, namely mixed gardens and tidal rice fields in Wajok Hilir Village, Mempawah Regency. The parameters analyzed include field capacity water content, bulk density, porosity, and soil texture. The sampling method was carried out in full at five replication points in each land, and the analysis was carried out in the laboratory of the Faculty of Agriculture, Tanjungpura University. The results showed that the highest field capacity water content was found in tidal rice fields at 199.73%, while mixed gardens only 76.98%. The bulk density of paddy soil was lower (0.4 g/cm³) than mixed gardens (0.72 g/cm³), indicating that the paddy soil was looser. The porosity of paddy soil was also higher (78%) than mixed gardens (65.27%). Both types of land have the same soil texture, namely silt loam, which supports the ability to store water and nutrients. These findings indicate that water management and organic matter content greatly influence the physical properties of soil in supporting land productivity.
Aplikasi Lumpur Laut Dan Biochar Sebagai Alternatif Pembukaan Lahan Tanpa Bakar Dan Pengaruh Produksi Jagung Pada Lahan Gambut. Ilham, Ilham Ilham; Anshari, Gusti Zakaria; Gafur, Sutarman Gafur
Jurnal Sains Pertanian Equator Vol. 3 No. 1: April 2014
Publisher : Fakultas Pertanian Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jspe.v3i1.5104

Abstract

ABSTRACT Peats have low fertilitie. Low macro and micro nutrients ( K , Ca , Mg , P, Cu, Zn, B and Mn ) and are acidic. This study aims to identify the effects of biochar and sea mud (lumpur laut) to changes of chemical and physical properties of peats that influence the growth and yield of corn on peats. Biochar and sea mud are used as ameliorant to improve peat soil properties. Research Variable consist of growth, yield, soil pH , total nitroge, total C and C / N. The best result mud sea and biochar influences of corn height is b2l2, code b1l2 for weight of dry shelled corn, code b2l2 for soil pH. Mud sea and biochar influences in total-N and total-C is b2l0 and code b0l0 for ratio C/N. b2l2 is dosis used biochar and sea mud. Keywords : Peats, Sea Mud, Biochar ABSTRAK Gambut memiliki kesuburan yang rendah, ketersedian jumlah unsur hara makro dan mikro yang rendah (K, Ca, Mg, P, Cu, Zn, Mn, B) yang rendah, mengandung asam-asam organik yang beracun. Penelitian bertujuan untuk Mengetahui pengaruh biochar dan lumpur laut terhadap perubahan sifat kimia dan fisika tanah serta pertumbuhan dan hasil tanaman jagung. Biochar dan lumpur laut digunakan sebagai amelioran dengan tujuan meningkatkan nilai kesuburan gambut. Variabel pengamatan antara lain pengamatan tinggi tanaman, Berat pipilan, selain itu juga diamati pH tanah, nitrogen total, total C dan C/N. Hasil terbaik dari pengaruh lumpur laut dan biochar terhadap tinggi jagung pada perlakuan b2l2, perlakuan b1l2 untuk berat pipilan, perlakuan b2l2 untuk pH tanah . Pengaruh lumpur laut dan biochar terhadap total-N dan total-C pada perlakuan b2l0 dan perlakuan b0l0 pada nilai Rasio C/N. b2l2 adalah kode perlakuan dari biochar dan lumpur laut. Kata Kunci : Gambut, Lumpur Laut, Biochar