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Dermiyati
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Faculty of Agriculture, University of Lampung, Jl. Sumantri Brojonegoro No. 1, Bandarlampung 35145, Indonesia
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Journal of Tropical Soils
Published by Universitas Lampung
ISSN : 0852257X     EISSN : 20866682     DOI : http://dx.doi.org/10.5400/jts.v25i1
Core Subject : Agriculture, Social,
Agriculture, Biological Sciences & Forestry Environmental Science
Journal of Tropical Soils (JTS) publishes all aspects in the original research of soil science (soil physic and soil conservation, soil mineralogy, soil chemistry and soil fertility, soil biology and soil biochemical, soil genesis and classification, land survey and land evaluation, land development and management environmental), and related subjects in which using soil from tropical areas.
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Konservasi Alam dan Lahan
Articles 4 Documents
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Search results for , issue "Vol. 30 No. 3: September 2025 (in Progress)" : 4 Documents clear
Changing of Sandy Soil Chemical Properties with Azolla microphylla and Quail Manure Syamsiah, Jauhari; Herawati, Aktavia; Mujiyo, Mujiyo; Widijanto, Hery; Pangastuti, Triyana Suryaning; Putri, Elvia Febriani
JOURNAL OF TROPICAL SOILS Vol. 30 No. 3: September 2025 (in Progress)
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2025.v30i3.%p

Abstract

Uncontrolled land conversion causes reduced land area for plant cultivation. The alternative used for rice cultivation is the marginal land such as sandy soil, however, several constraints led to very low productivity, so it needs proper management such as the addition of organic matter. The purpose of this study was to determine the changes in the chemical properties of sandy soil treated with Azolla microphylla and quail manure. The pot research was carried out in the Greenhouse of the Faculty of Agriculture, Universitas Sebelas Maret, with a factorial Completely Randomized Design (CRD) method, with 2 factors. Factor I was Azolla microphylla (A) (A0= 0, A1= 50, A2= 100, A3= 150 tons ha-1). Factor II was quail manure (Q) (Q0= 0, Q1= 20, Q2= 40 tons ha-1). Azolla microphylla and quail manure were incubated for 14 days under anaerobic conditions. The results showed that the application Azolla microphylla and quail manure increased chemical properties on sandy soil significantly. The addition of Azolla microphylla (100 tons ha-1) and quail manure (40 tons ha-1) increased the chemical properties of sandy soil such as cation exchange capacity (CEC), available-P, ammonium, available-K, available-Ca, electrical conductivity (EC) and redox potential (Eh).
Assessing the Impact of Terra Preta from Rice Husk on Soil, Rice Plant Growth, and Yield in the System of Rice Intensification (SRI) Adrinal, Adrinal
JOURNAL OF TROPICAL SOILS Vol. 30 No. 3: September 2025 (in Progress)
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2025.v30i3.%p

Abstract

The practice of intensive rice field cultivation and the excessive application of chemical fertilizer often lead to issues such as a gradual decline in soil quality and fertility, as well as enviromental pollution. By employing Tetadi as ameliorant technology and adopting SRI cultivation techniques, it is hoped that we can mitigate the negative effects on rice fields. This study was aimed to examine the effect of Tetadi on physical properties of paddy soil, growth, and rice yield on SRI method. The experiments were conducted in paddy fields in Pasar Ambacang, Kuranji, Padang city, and the experimental were application of Tetadi A=0 tons/ha, B=5 tons/ha, C= 10 tons/ha, D= 15 tons/ha, E= 20 tons/ha. The data were compared to the criteria of soil physical properties and plant data were statistically analysed for the variance. The results showed that the change has an insignificant impact on soil physical properties, yet decrease BD by 28.2%; increase SOM by 18.55%; TRP by 13.7%, moisture content 5.6%; permeability by 34.2%, and PAT by 20%. Application of 20 tons/ha Tetadi increased number of productive saplings 52.65% as well as the yield by 69.46% compared to the treatment without Tetadi application.
The Effect of Planting Media on Several Chemical Properties of Soil and Growth of Moringa Stem Cuttings (Moringa oleifera Lam.) Wahdah, Rabiatul
JOURNAL OF TROPICAL SOILS Vol. 30 No. 3: September 2025 (in Progress)
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2025.v30i3.%p

Abstract

This research was conducted to determine the effect of planting media on the growth of Moringa stem cuttings and determine the best planting media for growing Moringa stem cuttings. The research was carried out in July-October 2023. Located on the Wasaka III Student Dormitory grounds, Lambung Mangkurat University, Banjarbaru, South Kalimantan Province. The research was carried out using a one-factor Completely Randomized Design (CRD) method with four treatments and five replications to obtain 20 experimental units. The treatments given were as follows: m0 (Control): 6 kg peat soil, m1: 5 kg peat soil + 1 kg husk charcoal, m2: 5 kg peat soil + 1 kg laying hen manure, m3: 5 kg peat soil + 0.5 kg husk charcoal + 0.5 kg laying hen manure. The results showed that the planting medium had a significant effect on soil pH, shoot length, number of leaf stalks, root length and root volume of Moringa stem cuttings. However, it had no real effect on the number of shoots on Moringa stem cuttings. Based on research that has been carried out, it shows that planting media given husk charcoal and manure increases the available P content by 241.34 ppm, N-dd 1.70 me/100 g, and K-dd 1.65 me/100 g in the soil. peat and can increase the pH of peat soil from acid to neutral. The treatment also had a very significant effect on the growth of shoot length, number of leaf stalks, root length and root volume of Moringa stem cuttings. It can be suggested that the best planting medium for the growth of Moringa plants is to provide 0.5 kg of husk charcoal + 0.5 kg of laying hen manure on peat soil.
Influence of Land Use and Land Cover Variations on Soil Carbon Sequestration Potential in the Northern Madhupur Tract, Bangladesh Farukh, Murad Ahmed
JOURNAL OF TROPICAL SOILS Vol. 30 No. 3: September 2025 (in Progress)
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2025.v30i3.%p

Abstract

AbstractThis study examines the effects of diverse land use and land cover (LULC) types on soil physico-chemical properties and carbon sequestration potential in the northern Madhupur Tract, Bangladesh. Soil samples were collected from seven LULC types – sal forest, social forest, orchard, bare land, agricultural land, protected area, and built-up area across three depths (0–15 cm, 16–40 cm, and 41–70 cm) between April and September 2022. Key parameters analyzed included texture, bulk density, pH, electrical conductivity (EC), total nitrogen, available phosphorus, exchangeable potassium, available sulfur, organic carbon (OC), and soil organic carbon (SOC). Soil texture ranged from clay loam to clay. Bulk density was the lowest in built-up areas (1.57–1.62 gcm⁻³) and the highest in protected areas (1.97–2.20 gcm⁻³). Orchard soils had the highest surface moisture (23.26%). Surface soils showed the highest EC (0.82 dSm⁻¹), total N (0.11%), available P (118.6 ppm), and OC (1.07%), while pH increased with depth, peaking at 6.15. SOC stock differed significantly among land uses (F = 6.56, p < 0.05), highest in social forests (138.67 tha⁻¹) and built-up areas (134.04 tha⁻¹). Corresponding CO₂ mitigation potentials were 508.93 t C ha⁻¹ and 491.34 t C ha⁻¹. Agricultural land had the lowest SOC stock (85.31 tha⁻¹). Enhancing carbon storage through better land management is vital for sustainability and climate resilience.

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