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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 5 Documents
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Search results for , issue "Vol. 27 No. 2: May 2022" : 5 Documents clear
Soil Chemistry Character, the N, P, and K Uptake, and the Growth and Yield of Corn (Zea mays L.) Due to the Application of Ela Sago Palm Waste Compost and Liquid Organic Fertilizer in Ultisols Kaya, Elizabeth; Siregar, Adelina; Matulessy, Diane; Hasan, Masita; Akollo, Arsando
JOURNAL OF TROPICAL SOILS Vol. 27 No. 2: May 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i2.49-58

Abstract

Application of organic matter (compost Sago Ela palm waste and Liquid Organic fertilizers (LOF)) to the soil could have major benefits, such as to improve the soil physical condition (soil structure, water retention), and soil chemical properties (binding and providing nutrients, increasing CEC). The purpose of this study are (1) to improve the soil chemical properties of Ultisols, and (2) to increase plant uptake of N, P, and K, and the growth and yield of corn (Zea mays L.). The research was conducted in the field, namely in Telaga Kodok Village, Leihitu Sub District, and Central Maluku District. The experiment was designed in a factorial, and arranged in a randomized completed block design (RCBD).  The first factor was the provision of compost Sago Ela palm waste (K) and the second factor was the provision of liquid fertilizer (C). The results showed that the compost combined with LOF could improve pH, Al-exchangeable, Total-N, P-available soil, Uptake-P, Uptake-K, and the dry weight of seed corn. While the treatment of sago Ela palm waste compost and LOF can independently raise the K-available soil, N-uptake, and affect corn’s plant growth (height and trunk diameter). The treatment doses of sago Ela palm waste compost of 60 Mg ha-1 and LOF of 20 mL L-1 solution can increase the exchangeable Al, Total-N, and P-available soil, respectively 0.56 cmol(+)kg-1, 0.21%, and 31.00 mg kg-1; also able to increase the uptake of P, K, and weight dry seed corn respectively 0.21% and 1.26%, and 121.33 g plant-1. The treatment doses of Sago Ela palm waste compost of 60 ton ha-1 and liquid organic fertilizer of 10 mL L-1 solution can increase the soil pH by 5.70.
Effect of Land Use Change on Soil Physico-chemical Characteristics in Sungai Batang, east part of Maninjau Caldera Yulnafatmawita, Yulnafatmawita; Refdinal, Refdinal; Armansyah, Armansyah; Haris, Zainal Abdul
JOURNAL OF TROPICAL SOILS Vol. 27 No. 2: May 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i2.79-87

Abstract

Land-use change from the forest to others will affect the soil’s physicochemical properties. The research was conducted to identify soil physicochemical properties affected by land-use change in Sungai Batang, the east-south part of Maninjau caldera. The research used a survey method from which soil was sampled at four different types of land use (forest, bushland, mixed garden, and paddy soil) at 0-30 cm depth with three replicates. The results show that the soil in Sungai Batang was still developing. It was indicated by coarse soil texture (clay loam to sandy clay loam). Land-use change from the forest to other uses has altered some soil physicochemical properties. It increased soil bulk density and decreased total soil porosity, permeability rate, SOM content, and  total-N. However, there was an increase in  soil characteristics, especially soil P-availability, CEC, Ca-  and Na-exchangeable . While the soil pH  (H2O), K-and Mg-exchangeable stayed the same. In general, land use changed from forest to other use, mostly farming land degraded physicochemical characteristics of the soil derived from volcanic materials in Sungai Batang. That was mainly due to the decrease in SOM content.
The Effect of Rice Husk Biochar and Cow Manure on Some Soil Characteristics, N and P Uptake and Plant Growth of Soybean in Alfisol Supriyadi, Slamet; Widjajani, Bakti Wisnu; Murniyanto, Eko
JOURNAL OF TROPICAL SOILS Vol. 27 No. 2: May 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i2.59-66

Abstract

The effect of biochar on dryland in Madura has not been fully assessed. The objective of this study was to investigate the effect of biochar and animal manure on some soil characteristics, namely water content at field capacity, CEC, N total, available P, and N and P absorption, and plant growth of soybean in Alfisol. The research was arranged on a Randomized Completely Block Design (RCBD) with four replications. Rice husk biochar was mixed with cow manure and applied at the range of 2.5 - 10 Mg ha-1. The result showed that biochar (2.5 Mg ha-1) and cow manure (7.5 Mg ha-1) improved soil characteristics, plant growth, and soybean yield by 22%. Cow manure in this study would function as a source of nutrients while rice husk biochar acted as storage of nutrients that were then released slowly to soil solution for plant uptake. It was concluded that the mixture of 2.5 Mg rice husk biochar ha-1 and 7.5 Mg cow manure ha-1 could be the best combination of soil amendments to apply in an Alfisol in Madura.
Soil Chemical Properties and Agronomic Response of Sugarcane (Saccharum officinarum L.) Affected by Long Term No-Tillage Practice and Bagasse Mulch Application Zaqyah, Irene; Niswati, Ainin; Evizal, Rusdi; Utomo, Muhajir
JOURNAL OF TROPICAL SOILS Vol. 27 No. 2: May 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i2.67-77

Abstract

Intensive tillage will continuously reduce soil quality, characterized by decreased soil organic-C. Low soil organic-C indicates the disturbance of soil fertility. More conservative soil management experiments have been done for seven years to restore the soil quality for sugarcane (Saccharum officinarum L.) productivity. This research aimed to study the effect of the tillage system, bagasse mulch, and their interactions on soil chemical properties and sugarcane agronomic response. The research was conducted on a Split Plot of five groups. The main plot was the tillage system consisting of intensive tillage and no-tillage, while the subplot was the bagasse mulch consisting of bagasse mulch and no-bagasse mulch. This study found that in sugarcane cultivation, no-tillage system was beneficial for soil P-available, sugarcane length, and sugarcane ripening; bagasse mulch was beneficial for soil organic-C and also soil P-available. The no-tillage system to increase P-available can be combined with bagasse mulch or no-bagasse mulch, but the no-tillage system combined with no-bagasse mulch increases the percentage of gap in sugarcane cultivation.
Soil Organisms Activities in Red Onion Cultivation with Application of Plant Extract Suspension and Compost Rani, Icha Deska; Dermiyati, Dermiyati; Suharjo, Radix; Niswati, Ainin; Pangaribuan, Darwin Hasibaran
JOURNAL OF TROPICAL SOILS Vol. 27 No. 2: May 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i2.89-98

Abstract

Agro-industrial waste such as banana weevil, pineapple rhizome, and empty fruit bunches of oil palm has not been utilized properly, even though the waste can be processed into liquid organic fertilizer after extracting the beneficial microorganisms contained in it. This research aimed to observe and study soil organisms’ activity after applying plant extract suspensions and compost types. The research was conducted at the Integrated Field Laboratory and Soil Science Laboratory, Faculty of Agriculture, University of Lampung. The treatments were designed in a 3 × 3 factorial design in a Randomized Block Design with three replications. The first factor was the plant suspension extracts derived from banana weevil, pineapple rhizome, and oil palm empty fruit bunches, while the second factor was the compost in the form of solid compost and liquid compost. The results showed the activity of soil organisms in the form of respiration, soil microbial carbon biomass, soil microbial population, and mesofauna population, which was applied to a suspension of plant extracts from pineapple rhizome, given the highest yield. Furthermore, the bacterial phosphate dissolution index and the diversity of soil mesofauna applied to liquid compost were higher than those of solid compost or without compost. There was no interaction between the application of plant extract suspension and the compost types on the soil organism’s activity.

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