Garuda - Garba Rujukan Digital

p-Index From 2019 - 2024

0.817

P-Index

This Author published in this journals

All Journal Journal of Tropical Soils JTSL (Jurnal Tanah dan Sumberdaya Lahan) Jurnal Ilmu-Ilmu Pertanian Indonesia Jurnal Solum Jurnal Ilmiah Pertanian

Dian Fiantis

Andalas University

Author-ID : 2854227

Agriculture, Biological Sciences & Forestry Environmental Science

Published : 7 Documents Claim Missing Document

Claim Missing Document

Articles

KURVA SORPSI FOSFAT MENURUT LANGMUIR DAN FREUNDLICH SEBAGAI PENDUGA KEBUTUHAN PUPUK FOSFAT PADA ANDISOLS SUMATERA BARAT Dian Fiantis
Jurnal Solum Vol 1, No 1 (2004): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Andisols are among the most productive soils in the world, but these soils also strongly retained phosphate. The high capacity for phosphate sorption in Andisols is due to their high content of active Al and Fe compounds. The objectives of this study were to assess the effect of soil properties on P sorption, buffer capacities and requirements of some benchmark soil profiles in Mt. Marapi and Mt. Pasaman. The P sorption characteristics of Andisols from West Sumatra were described using Langmuir and Freundlich equations. The P sorption maximum in Mt. Pasaman soils was higher than in Mt. Marapi soils. The most important soil properties affecting P sorption and buffer capacities were oxalate Si and Fe, Al (Sio Feo and Alo), dithionite Al (Ald), pyrophosphate Al (Alp), which explained 89% of the variance in sorption maxima and 83% of P buffering indices. Allophane, Alo and Ald were positively correlated with P sorption maximum. Contrary to general assumption that organic matter had an inverse relation with P sorption maxima, in this study, however, there was no trend observed between P sorption maxima and organic carbon. Organic C has poor relationship with this parameter. Andisols from Mt. Marapi and Mt. Pasaman need P input between 320 to 7,800 mg P kg-1 to maintain the P level in soil solution at 0.2 mg kg-1.

KESESUAIAN LAHAN DAN POTENSI PRODUKSI TANAMAN GAMBIR DI KABUPATEN PESISIR SELATAN SUMATERA BARAT J Juniarti; Y Yuzirwan; Dian Fiantis
Jurnal Solum Vol 1, No 1 (2004): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

The land suitability study for gambir crop (Uncaria gambir, Roxb) in the buffer zone of the National Park of Kerinci Seblat (Taman Nasional Kerinci Seblat) at Salido Saribulan, sub district IV Jurai, Pesisir Selatan was investigated. The objective of this study was to estimate the land suitability for gambir in Salido Saribulan. The soils were sampled in composite ways for analyses in laboratory. The results showed that according to climatic and physical land condition, the studied area was considered as class S1 (highly suitable). However, based on land suitability class, it was grouped as S3f (marginally suitable with some constraints in the availability of soil nutrients). We suggested that to increase gambir production in the studied area can be done by adding some fertilizers both organic and inorganic ones.

PERANAN KOLOID Al DAN Fe AKTIF DALAM PROSES RETENSI FOSFAT PADA ANDISOLS DARI SUMATERA BARAT Dian Fiantis
Jurnal Solum Vol 1, No 2 (2004): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

The presence of active Al and Fe compounds in large amount in Andisols has caused strong P-retention on these mineral structure or it is bound on OH functional group or positively charged H. The objective of this research was to provide fundamental information to manage and conserve Andisols as used to be vegetable production centre in West Sumatra. The results showed that volcanic soil from Pasaman Mountain had higher retention capacity than that of Marapi Mountain. Therefore, it was needed more P for optimum plant growth. The most dominant soil properties affected pattern and amount of P retention was due to type of clay mineral found in volcanic soils. The dominant clay mineral on Andisols in West Sumatra was alofan and ferryhydrite (non-crystalline clay mineral) which are active component of Al and Fe colloids. Key Words: Volcanic ash soil, P retention, Alofan

Soil Layers Properties of a Profile Developed on the Past Depositional Series on Merbabu Volcano Central Java Indonesia Mohammad Nurcholis; Susila Herlambang; Sri Aminah Suwartikaningsih; Dian Fiantis; Dwi Fitri Yudiantoro
JOURNAL OF TROPICAL SOILS Vol 24, No 2: May 2019
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2019.v24i2.53-63

A wide and deep soil profile (around 1200 cm) was observed at Ketep Park West Slope of Merbabu volcano Central Java, Indonesia to identify the soil morphology, physical and, chemical and mineralogical properties. Results showed that several soil development processes occurred in each volcanic deposits with different characteristics. Most soil layers met some of andic soil properties criteria such bulk density <0.9 g.cm-3, P retention of >85%, and (Alo + ½ Feo) >2.0%. A thin melanic material showing black color layer was found at the lower part of the soil profile, i.e. in depth from 726 to 798 cm. The dominant material in most soil layers is an allophane. Minerals in the sand fraction were dominated by labradorite and augite, with some layers were hypersthene and green hornblende.

SIFAT KIMIA ABU VULKANIS GUNUNG SINABUNG SEBAGAI SUMBER HARA TANAH DAN ANALISIS SPASIAL DARI SEBARAN MATERIAL HASIL ERUPSI TAHUN 2019 Saftia Laila Rajmi; Gusnidar Gusnidar; Dian Fiantis
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 24, No 1 (2022)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.24.1.62-68

[SPATIAL ANALYSIS OF MATERIAL DISTRIBUTION AND CHEMICAL PROPERTIES OF VOLCANIC ASH FROM THE ERUPTION OF MT. SINABUNG IN 2019]. Mount Sinabung, located in Karo Regency, North Sumatra, first erupted in August 2010 and continued from 2013 to 2022. As one of the parent materials for fertile soil, volcanic ash reserves large amount of nutrients. The research was aimed to determine the chemical characteristics of volcanic ash and to map the distribution of volcanic ash from Mt. Sinabung eruption material in 2019. This study examines 22 samples of the of volcanic ash collected based on a terrestrial survey with the grid method. The results showed that volcanic ash within a radius of 3-5 km from the center of the eruption (total area 1,402.83 ha) have a pH-H2O ranged from 5.30 to 6.27 (acid to slightly acid), Mg > Na > Ca > K, in order of base cations, with moderate to very high criteria, available P ranged from 35 – 165.96 mg/kg (very high), and CEC ranged from 12.92 – 21.78 cmol/kg considered low to moderate. Therefore, the volcanic ash deposits can provide a significant quantity of nutrients for future soil fertility in agricultural areas affected by eruptions.

Soil renewal and metal ions pollutants removal in water by using volcanic ash from Mt. Sinabung and Mt. Merapi eruptions Raudhatu Shofiah; Dian Fiantis; Amrizal Saidi; Roslan Ismail
Jurnal Ilmiah Pertanian Vol. 19 No. 2 (2022): Jurnal Ilmiah Pertanian
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/jip.v19i2.9655

Volcano activities form about 22% of Indonesian landforms; 35 are Sumatra volcanoes with many sources of volcanic ash. Mt. Sinabung and Mt. Merapi were the most significant eruptions issuing abundant material. This study aims to identify volcanic ash's morphological, mineralogical, and chemical properties from both volcanoes. This study also determines their optimum adsorption capacity in removing water pollutant materials, especially iron (Fe3+) and aluminum (Al3+). This study began by identifying the properties of the sample, such as color, pH H2O and KCl, chemical composition with XRF, exchangeable bases-cation exchange capacity, and mineral identification by using XRD and SEM. Then, batch adsorption studies were performed to determine the adsorption capacity of volcanic ash. Volcanic ash samples were gray to light gray with pH 2.9 – 5 and contained silicate minerals, i.e., feldspar, quartz, plagioclase, magnetite, and gypsum. Volcanic ash consisted of rich material that was important for increasing soil nutrients. The macronutrient of Mt. Sinabung in the order of Ca, Mg, K, S, P, and Mt. Merapi of S, Ca, Mg, K, and P act as sources of soil renewal. The adsorption capacity of volcanic ash to adsorb Al3+ and Fe3+ from water pollutants increased after the temperature reached 90oC, and pH tends to be less acidic.

KORELASI NILAI KADAR KARBON DENGAN ESTIMASI PRODUKTIFITAS PADI SAWAH VULKANIS GUNUNG TALANG Siska Amelia; Dian Fiantis; Syafrimen Yasin
Jurnal Tanah dan Sumberdaya Lahan Vol. 10 No. 2 (2023)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2023.010.2.27

Organic carbon contributes to increasing soil productivity. In determining the soil fertility indicators, soil organic carbon mapping is required to provide information and demonstrate the distribution of organic carbon. In this study, remote sensing method testing was carried out by comparing data between observations in the field with rice productivity estimation data using Landsat 8 imagery. The observation was conducted on paddy fields with an area of about 4,800.86 ha in the volcanic region of Mount Talang. This research used a survey method with a grid system of 1,000 x 1,000 m intervals with a soil depth of 0-20 cm and 20-40 cm. The parameters of the soil observations carried out were bulk density, pH, and organic carbon. The results showed that Mount Talang volcanic rice fields had an estimated soil organic carbon stock of ±6,426.118 tons. A weak correlation was obtained between organic carbon and the estimated value of paddy rice productivity (r =0.024). Hence organic carbon in the study area could not be estimated with the value of lowland rice productivity.

Co-Authors Amrizal Saidi Dwi Fitri Yudiantoro Gusnidar Gusnidar J Juniarti Mohammad Nurcholis, Mohammad Raudhatu Shofiah Roslan Ismail Saftia Laila Rajmi Siska Amelia Sri Aminah Suwartikaningsih Susila Herlambang Syafrimen Yasin Y Yuzirwan

Title

Found 7 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 7 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 7 Documents
Search