cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Dermiyati
Contact Email
dermiyati.1963@fp.unila.ac.id
Phone
+62721781822
Journal Mail Official
j.tnhtrop@gmail.com
Editorial Address
Faculty of Agriculture, University of Lampung, Jl. Sumantri Brojonegoro No. 1, Bandarlampung 35145, Indonesia
Location
Kota bandar lampung,
Lampung
INDONESIA
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
 1 
Search results for , issue "Vol. 27 No. 1: January 2022" : 5 Documents clear
Effects Nutrient Additives of NPK Fertilizer and Coconut Water on the Yield of White Oyster Mushroom (Pleurotus ostreatus) Alfarizi, Muhammad Salman; Gusmawartati, Gusmawartati; Zulfatri, Zulfatri
JOURNAL OF TROPICAL SOILS Vol. 27 No. 1: January 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i1.1-7

Abstract

White oyster mushroom (Pleurotus ostreatus) requires a source of nutrients for growth and development. The provision of NPK fertilizer aims to increase the source of media nutrients so that the results obtained are better in quantity and quality. Growth regulators can stimulate the relatively long growth of oyster mushroom mycelium. Growth regulators contain hormones that can support growth rates. One alternative natural growth regulator that can be used is coconut water. The research was carried out at the oyster mushroom kumbung at Pekanbaru, using a completely randomized design, consisting of 2 factors and three replications. The first factor was NPK fertilizer consisting of 4 levels (0, 7.5, 10, 12.5) g per baglog. The second factor was coconut water consisting of 4 levels (0, 3, 6, 9) ml per baglog. Data were analyzed using Analysis of Variance and further tested using DNMRT level 5%. The results showed that adding 10 g of NPK fertilizer and 6 ml of coconut water per baglog was a better dose for the number of fruit bodies, fresh fruit body weight, fruit cap diameter, fruit stalk length, and biological efficiency.
The Effectiveness and Valuation of Using Silt Pit to Reduce Erosion and Nutrient Loss of Andosol Masnang, Andi; Jannah, Asmanur; Andriyanty, Reny; Haryati, Umi
JOURNAL OF TROPICAL SOILS Vol. 27 No. 1: January 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i1.27-35

Abstract

The silt pit is a method of soil management that functions to accommodate and absorb surface runoff. The research aimed to determine the silt pit effectiveness for erosion reduction and nutrient loss. The research is located at 576 above sea level (asl) in Sukamantri village, Taman Sari district, Bogor Regency. The experiment used a randomized block design with three replications and a slope group. The treatments were R0 (without silt pit); R1 (silt pit); R2 (silt pit + mulch); R3 (silt pit + mulch + biopore tube), R4 (silt pit + mulch + biopore tube + vertical crop tube). The highest runoff-decreasing occurred on R4 treatment, which pressed down 29.38% runoff. The highest value of erosion-decreasing occurred on R2 as 68.74% and followed by effectiveness in reducing the loss of 71% Organic C, 76% available P, and 67% total N. The dry seeds peanut yield was around 0.54 - 0.86 Mg ha-1, dried pods was 0.96 - 1.33 Mg ha-1, and dried biomass was 5.16 - 6.23 Mg ha-1 and not significantly different between all treatments. This study recommends that farmers apply silt pit innovation technology with a combination of mulch, biopore, and mature green media because the incremental B/C ratio was 1.175. It is a good economic indicator for farmers.
Use of Biochar to Control Root-Feeding Soil Nematodes on Muna Local Tomatoes Variety Ningsi, Fitri Wahyu; Hakim, Irfan; Dussy, Achmad Nur Azhary; Rahmaniar, Wa Ode; Yudistira, Yudistira; Kilowasid, Laode Muhammad Harjoni
JOURNAL OF TROPICAL SOILS Vol. 27 No. 1: January 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i1.37-47

Abstract

Energy pathways in soil nematode communities consist of energy pathways for roots, bacteria, and fungi. The dominance of the root energy pathway indicated an increase in nematode attacks on the roots that can be regulated through changes in food availability and the environment. This study aimed to (i) determines the effect of the biochar rate on soil nematode energy pathways on local tomato plants and (2) determine the biochar rate that can suppress the dominance of root-feeding nematodes of local varieties of Muna tomato plants. The treatment tested was the biochar rate expressed as a percentage of the biochar weight the soil weight, namely 0%, 5%, 10%, and 15%. Each was repeated three times, randomly placed in the experimental plot following the randomized block design procedure. The results showed that the addition of biochar to 10% of the soil weight decreased the abundance of the total nematodes and family Longidoridae, on the other hand, increased Aphelenchoididae, Spearman rho correlation. The abundance of root eaters decreased; on the other hand, fungivores increased with the biochar rate. Spearman rho indicated that fungivores were negatively correlated with root-feeders and omnivores while positively correlated with predators. It was concluded that applying biochar up to a rate of 10% of the soil weight before planting could suppress the abundance of root-feeding nematodes in the vegetative growth phase of Muna local tomatoes variety.
Leaching Characteristics of Udipsamment Ameliored by Mineral Soil and Adhesive Polymer Fibrianty, Fibrianty; Hanudin, Eko; Ma’as, Azwar
JOURNAL OF TROPICAL SOILS Vol. 27 No. 1: January 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i1.17-25

Abstract

Udipsamment  is  characterized  by  sand  fraction  > 95%,  loose,  and  very  high  leaching. This  study  aimed  to determine  the  effect  of  mineral  soil  ameliorants  and  adhesive  polymers  on  the character  of  nutrient leaching  in  Udipsamment.  The  leaching   study  in  lysimeters  used  a completely  randomized  design  with three  replications.  The  treatments  consist  of  bagasse  (B),  mineral  soil included  Inceptisol  (I)  and Vertisol  (V),  and adhesive  polymers included tapioca  1% and 2% (T1  and  T2),  tapioca  dregs  1%  and  2  %  (A1 and  A2),  Polyvinylalcohol  0.1%  and  0.2%  (P1  and  P2).  Combination  of  treatments  are  IB,  VB,  IBT1, IBT2,  VBT1,  VBT2,  IBA1,  IBA2, VBA1 ,  VBA2 , IBP1,  I BP2, VBP1,  and  VBP2.  Observations  were made  before  and  after  leaching.  The  research  showed  that  VBT2  increases moisture-holding  capacity. Amelioration improved the ability of  Udipsamment  to  hold  nutrients,  after leaching  for  six  months,  there was  a  decrease  in  organic  C,  total  N,  and  available  P  compared to before  leaching.  Amelioration increased the  soil  CEC,  even up  to  the  sixth  month  leaching,  the soil  CEC  showed  a  higher value  than  before  leaching.  The  amount  of  clay  fraction  was  relatively  uniform  between  the  surface  and  the  bottom of  the lysimeter,  indicating that   the adhesive   polymer  successfully  bonding  the  clay-sand  particles  and prevented clay leaching.
Heavy Metal Contamination on Shallot Fields In Bantul Regency, Yogyakarta Handayani, Cicik Oktasari; Martono, Edi; Harini, Rika
JOURNAL OF TROPICAL SOILS Vol. 27 No. 1: January 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i1.9-16

Abstract

Shallot cultivation usually uses very intensive agrochemicals that could affect the soil’s chemical properties and contaminate agricultural land by increasing the content of heavy metals. The use of agrochemicals is closely related to the behavior of farmers. The research aimed to study the heavy metal contamination and soil chemical properties in shallot fields and analyze the relationship between farmer behavior in using fertilizers and pesticides with a heavy metal concentration in agricultural land. The research was conducted in Srigading Village, Batul, Yogyakarta. Soil samples as many as 30 samples were taken from the shallot fields before harvest using a purposive sampling method and were analyzed for heavy metal concentrations of Pb, Cd, Ni, Co, Cr, and other soil chemical properties. Interviews were also conducted with landowners or farmers at the soil sampling location. Analysis of interview data was carried out by scoring each qualitative data into quantitative data through a questionnaire and testing the correlation between farmer behavior and heavy metal content. The results found that the shallot fields in the Srigading Village, Bantul contain heavy metals Pb, Cd, Cr, Co, and Ni with concentrations below soil quality standard. The soil organic carbon content in shallot fields has a low value. Farmer behavior has a weak negative correlation with heavy metal content in the soil.

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2022 2022


Reset
Filter By Issues
All Issue Vol 30, No 3: September 2025 (in Progress) Vol. 30 No. 3: September 2025 (in Progress) Vol 30, No 2: May 2025 Vol. 30 No. 2: May 2025 Vol 30, No 1: January 2025 Vol. 30 No. 1: January 2025 Vol 29, No 3: September 2024 Vol. 29 No. 3: September 2024 Vol. 29 No. 2: May 2024 Vol 29, No 2: May 2024 Vol 29, No 1: January 2024 Vol. 29 No. 1: January 2024 Vol. 28 No. 3: September 2023 Vol 28, No 3: September 2023 Vol. 28 No. 2: May 2023 Vol 28, No 2: May 2023 Vol. 28 No. 1: January 2023 Vol 28, No 1: January 2023 Vol 27, No 3: September 2022 Vol. 27 No. 3: September 2022 Vol 27, No 2: May 2022 Vol. 27 No. 2: May 2022 Vol. 27 No. 1: January 2022 Vol 27, No 1: January 2022 Vol 26, No 3: September 2021 Vol. 26 No. 3: September 2021 Vol 26, No 2: May 2021 Vol. 26 No. 2: May 2021 Vol. 26 No. 1: January 2021 Vol 26, No 1: January 2021 Vol 25, No 3: September 2020 Vol. 25 No. 3: September 2020 Vol 25, No 2: May 2020 Vol. 25 No. 2: May 2020 Vol. 25 No. 1: January 2020 Vol 25, No 1: January 2020 Vol 24, No 3: September 2019 Vol. 24 No. 3: September 2019 Vol. 24 No. 2: May 2019 Vol 24, No 2: May 2019 Vol 24, No 1: January 2019 Vol. 24 No. 1: January 2019 Vol. 23 No. 3: September 2018 Vol 23, No 3: September 2018 Vol 23, No 2: May 2018 Vol. 23 No. 2: May 2018 Vol 23, No 1: January 2018 Vol. 23 No. 1: January 2018 Vol. 22 No. 3: September 2017 Vol 22, No 3: September 2017 Vol. 22 No. 2: May 2017 Vol 22, No 2: May 2017 Vol 22, No 1: January 2017 Vol. 22 No. 1: January 2017 Vol. 21 No. 3: September 2016 Vol 21, No 3: September 2016 Vol. 21 No. 2: May 2016 Vol 21, No 2: May 2016 Vol 21, No 1: January 2016 Vol. 21 No. 1: January 2016 Vol 20, No 3: September 2015 Vol. 20 No. 3: September 2015 Vol 20, No 2: May 2015 Vol. 20 No. 2: May 2015 Vol. 20 No. 1: January 2015 Vol 20, No 1: January 2015 Vol. 19 No. 3: September 2014 Vol 19, No 3: September 2014 Vol 19, No 2: May 2014 Vol. 19 No. 2: May 2014 Vol. 19 No. 1: January 2014 Vol 19, No 1: January 2014 Vol. 18 No. 3: September 2013 Vol 18, No 3: September 2013 Vol 18, No 2: May 2013 Vol. 18 No. 2: May 2013 Vol. 18 No. 1: January 2013 Vol 18, No 1: January 2013 Vol. 17 No. 3: September 2012 Vol 17, No 3: September 2012 Vol. 17 No. 2: May 2012 Vol 17, No 2: May 2012 Vol. 17 No. 1: Januari 2012 Vol 17, No 1: Januari 2012 Vol 16, No 3: September 2011 Vol. 16 No. 3: September 2011 Vol. 16 No. 2: May 2011 Vol 16, No 2: May 2011 Vol. 16 No. 1: January 2011 Vol 16, No 1: January 2011 Vol. 15 No. 3: September 2010 Vol 15, No 3: September 2010 Vol. 15 No. 2: May 2010 Vol 15, No 2: May 2010 Vol 15, No 1: January 2010 Vol. 15 No. 1: January 2010 Vol 14, No 3: September 2009 Vol. 14 No. 3: September 2009 Vol 14, No 2: May 2009 Vol. 14 No. 2: May 2009 Vol 14, No 1: January 2009 Vol. 14 No. 1: January 2009 Vol. 13 No. 3: September 2008 Vol 13, No 3: September 2008 Vol. 13 No. 2: May 2008 Vol 13, No 2: May 2008 Vol. 13 No. 1: January 2008 Vol 13, No 1: January 2008 More Issue