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JTSL (Jurnal Tanah dan Sumberdaya Lahan)
Published by Universitas Brawijaya
ISSN : -     EISSN : 25499793     DOI : 10.21776/ub.jtsl
Core Subject : Agriculture, Social,
Agriculture, Biological Sciences & Forestry Environmental Science
Jurnal Tanah dan Sumberdaya Lahan (JTSL) dikelola oleh Jurusan Tanah, Fakultas Pertanian, Universitas Brawijaya, Malang. Artikel dari hasil penelitian orisinil, dan review tentang aspek manajemen sumberdaya tanah dan lahan yang mencakup, kesuburan tanah, kimia tanah, biologi tanah, fisika tanah, pedologi, sistem informasi lahan, kualitas tanah dan air, biogeokimia, struktur dan fungsi ekosistem, serta rehabilitasi tanah dan lahan dapat dimuat dalam jurnal ini tanpa dipungut biaya. Jurnal Tanah dan Sumberdaya Lahan diterbitkan dalam satu volume setiap tahun. Setiap volume terdiri atas dua nomor yang diterbitkan pada bulan JANUARI dan JULI.
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Articles 23 Documents
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Search results for , issue "Vol. 6 No. 2 (2019)" : 23 Documents clear
PENGARUH APLIKASI BOKASHI TERHADAP DINAMIKA KETERSEDIAAN N, P, DAN S PADA INCEPTISOL KARANGPLOSO, MALANG Ursulin Sacer Setyastika; Retno Suntari
Jurnal Tanah dan Sumberdaya Lahan Vol. 6 No. 2 (2019)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (227.836 KB) | DOI: 10.21776/ub.jtsl.2019.006.2.10

Abstract

The Inceptisol of Karangploso has low soil pH, low organic matter (OM), medium total soil N, very low C/N ratio, and low available sulphur- that cause low soil productivity. The application of bokashi preserves strongly productivity and organic matter in the soil. This research aimed to determine the effect of bokashi application in improving soil chemical properties and N, P, S-available in an Inceptisol of Karangploso. The experiment was conducted in greenhouse of Facultyof Agriculture, Brawijaya University using a completely randomized design with 7 treatments and 3 replications. The treatments consisted of O1 = dose of 5 t ha-1  + ½ A, O2 = dose of 10 t ha-1  + ½ A, O3 = dose of 15 t ha-1 + ½ A, O4 = dose of 20 t ha-1  + ½ A, O5 = dose of 25 t ha-1  + ½ A, and O6 = dose of 30 t ha-1  + ½ A. The results showed that the increasing dose of bokashi significantly increased soil pH (from 5.1 to 5.4), C/N ratio (from 9.64 to 9.93), P-available (from 141 to 142.6 ppm P) at 60 DAI (days after incubation), total N (from 0.21 to 0.24% at 30 DAI and 0.18% to 0.24% at 60 DAI ) and NO3- (from 24.96 to 65.47 ppm at 30 DAI and 14.91 ppm to 39.20 ppm at 60 DAI) compared to the control, but it had no significantly effect on organic carbon, OM, SO42- in soil. The correlation test showed that there was a strong and positive correlation between pH and NO3- (r=0,77*), organic carbon and NO3- (r=0,63), organic carbon and P-available (r=0,78*), OM to NO3- (r=0,70*), and OM to P-available (r=0,86*).
PEMETAAN PREDIKSI SEBARAN KERENTANAN LONGSOR DI KECAMATAN TAWANGMANGU, KABUPATEN KARANGANYAR MENGGUNAKAN PENDEKATAN FUZZY LOGIC Mualif Adi Saputra; Mochtar Lutfi Rayes; Istika Nita
Jurnal Tanah dan Sumberdaya Lahan Vol. 6 No. 2 (2019)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (281.282 KB) | DOI: 10.21776/ub.jtsl.2019.006.2.16

Abstract

Tawangmangu District is one of the problemas areas in Karanganyar Regency related to landslides. Land use that is not in accordance with the slope and triggered by high rainfall makes the District of Tawangmangu an area with criteria of landslides of medium to high criteria. Mitigation efforts need to be carried out to minimize the danger of landslides. Data limitations are the basis for these mitigation efforts. This can be solved using fuzzy logic. This method can be used by looking at a limited area and data. This research was conducted in Tawangmangu District by dividing the research location into 16 land map units (LMU). The results showed that Tawangmangu District was divided into four classes, involve: not vulnerable, low, medium and high. Criteria are not vulnerable to spread in 9; 7; 11; 10 and 12 LMU, low spread in 3; 4; 5; 16; 8 and 13 LMU, medium spread in 2; 15 and 1 LMU and high vulnerability only in 14 LMU. Factors that can take effect the occurrence of landslides in Tawangmangu District are slope, land use and bulk rainfall. This method can be applied at research sites because it has the accuracy of very accurate results.
STUDI KETERSEDIAAN N-TANAH DI SENTRA TANAMAN BAWANG PUTIH (Allium sativum L.), KECAMATAN PUJON, MALANG, JAWA TIMUR Ketriwani Panggabean; S Soemarno
Jurnal Tanah dan Sumberdaya Lahan Vol. 6 No. 2 (2019)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (376.185 KB) | DOI: 10.21776/ub.jtsl.2019.006.2.22

Abstract

Pujon District is one of garlic centers for increasing garlic production in Malang. One of the causes of low garlic production is the low soil fertility. The status of soil fertility in garlic areas is influenced by availability of soil N. This study was conducted in Pujon District, Malang. The observation points were spread over five villages of garlic centers, i.e. Pandesari, Pujon Lor, Sukomulyo, Bendosari, and Madiredo. Correlation analysis was conducted for data of soil chemical and physical properties obtained from laboratory analysis. The garlic production was used as a dependent variable, while the soil N-total, C-organic, pH (H2O), pH (KCl), bulk density, and soil porosity, were used as the independent variables. Results showed that status of soil N the garlic center of Pujon District was in the low to medium category. Content of N in the topsoil (0-30cm) of the five land mapping units was medium, while that in the subsoil (30-60cm) of the five land mapping units ranged from low to medium. The large or small N content in the soil did not significantly correlated to organic C, pH (H2O and KCl), bulk density and soil porosity. There was a significant correlation between garlic production and the C/N ratio. However, the significant correlation was only found in the lower layer (30-60cm) with the r=0.82**.

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