Chemical Characteristics and Morphology of Amorphous Materials Derived from Different Parent Materials from Central Java, Indonesia

Yuliani, Nurmili; Hanudin, Eko; Purwanto, Dan Benito Heru

doi:10.3923/ijss.2017.54.64

Cited by 6 publications

(5 citation statements)

References 18 publications

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“…According to Soil Survey Staff (2014), the pH of NaF > 9.4 indicates that the soil contains amorphous minerals. This is supported by research of Yuliani, et al, (2017), which show that the mineral contents of allophane and imogolite clay of Mount Merapi were 27.3% and 6.8%, respectively.…”

Section: Variability Of Chemical and Physical Properties In Soil Depth A) Ph-h 2 O Ph-kcl And Ph-nafsupporting

confidence: 58%

Physico-Chemical Properties of Volcanic Soils under Different Perennial Plants from Upland Area of Mt. Merapi, Indonesia

Kartikawati

Hanudin

Purwanto

2019

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Vegetation recovery is essential in land restoration after the eruption of Mount Merapi in 2010. Vegetation is a source of organic material that produces root exudate containing organic acids. These acids accelerate the dissolution process of volcanic material so that it affects the soil characteristics. This study was conducted to analyze the effect of four types of perennial plants on soil chemical and physical characteristics. The soil samples were taken on the area planted with cinnamon,

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Section: Variability Of Chemical and Physical Properties In Soil Depth A) Ph-h 2 O Ph-kcl And Ph-nafsupporting

confidence: 58%

Physico-Chemical Properties of Volcanic Soils under Different Perennial Plants from Upland Area of Mt. Merapi, Indonesia

Kartikawati

Hanudin

Purwanto

2019

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“…Entisol soil is only found in upper slopes, and the soil type in other slopes was found Inceptisol because the soil was more developed, and the Bw horizon was also found. Yuliani et al (2017) stated that the climate conditions around the Mount Merapi area are classified as wet tropical. Annual rainfall ranges from 2 500-3 000 mm and air temperature ranges from 20-33 °C and air humidity around 80-99%.…”

Section: Methodsmentioning

confidence: 99%

Comparison of two soil quality assessment models under different land uses and topographical units on the southwest slope of Mount Merapi

Meitasari,

Hanudin,

Purwanto

2024

Soil & Water Res.

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This study aims to compare the soil quality indexing model by adding and weighting the soil under different land uses and slope positions on the southwest slope of Mount Merapi, Indonesia. Soil sampling was carried out based on a landscape analysis divided into four geomorphological units (slopes): upper, middle, lower and foot slopes. The research design was nested where the soil sample was located (surface soil 0-30 cm). Based on the research results, soil quality indices (SQI) of forest on the upper slopes is very high. SQI of dry fields on the middle, lower and foot slopes is low to medium. SQI of mixed gardens on the middle and lower slopes is low to medium. SQI of snake fruit land on the middle, lower and foot slopes is medium to high. SQI of grassland on the lower slopes is medium to high, and SQI of paddy fields on the foot slopes is medium to high. Weighted soil quality index (SQIw) has a higher correlation (R 2 = 0.90) and can predict soil quality better than the adding soil quality index (SQIa) model (R 2 = 0.76). Indicators that most influence soil quality are the percentage of sand, total N, C-POM, C-Min, pH, and aggregate stability, that indicators are entirely influenced by organic matter, site-specific management to maintain SQI by maintaining organic matter. The selected indicators in this study can be used to determine the SQI in similar areas.

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“…Aquadest (distilled water) and H 2 O 2 30% (technical) for removing the soil organic material were heated with a hot plate. Aquadest and HCl or NaOH were then added to lower the pH to 4 or increase the pH of the soil to 10 so that the soil was completely dispersed and placed on an ultrasonic device (20 kHz) to obtain a transparent fraction by separating sand and artificial dust (Yuliani et al, 2017). The Ultrasonic soil was the put into the sedimentation tube, added with 1000 ml aquadest and preserved for 24 hours.…”

Section: Preparation Analysis and Soil Fractionationmentioning

confidence: 99%

“…Meanwhile, the imogolite length on Mount Dieng, Merbabu, and Sumbing was was 140-110, 12-143, and 24-187 nm, consecutively. The allophane diameter is approximately 3.5 nm with 0.7 nm thickness (Wada et al, 1979), and imogolite length may reach 1000 nm (Yuliani et al, 2017).…”

Section: Allophane and Imogolite Characteristics In Tem Analysismentioning

confidence: 99%

Competitive adsorption of phosphate with sulfate, humic acid, and fulvic acid by allophane in different parent materials in Central Java

Fauziah

Hanudin

Utami

2022

ipas

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Andisol is a soil that has andic properties and develops from volcanic parent materials, especially ash. Andic soil properties are formed due to weathering of tephra or other parent materials that contain volcanic glass in large quantities. The main components of soil-forming Andisol are amorphous (short-range-order) minerals, such as allophane, imogolite, ferrihydrite, and Al/Fe-humus complexes. The existence of short-range-order minerals causes Andisol to have high P-tapping ability, but efforts to lower the amount of P plunged with organic and inorganic an-ons have not been widely studied. This study aimed to compare the ability of humic acid, fulvic acid, and sulfate in suppressing P adsorption by amorphous minerals from the Andisol of Mount Dieng, Merbabu, and Sumbing. The highest calculation of % ferrihydrite was found at the location of Mount Merbabu with a value of 3.05%, while the % allophane + imogolite was determined by the content of Sio in the ground. The calculation results showed that the highest was found at the location of Mount Sumbing with a value of 7.17%. Based on TEM analysis, Mount Sumbing has allophane diameter of 2.24 – 5.93 nm and the imogolite length of 24 – 187 nm.

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Chemical Characteristics and Morphology of Amorphous Materials Derived from Different Parent Materials from Central Java, Indonesia

Cited by 6 publications

References 18 publications

Physico-Chemical Properties of Volcanic Soils under Different Perennial Plants from Upland Area of Mt. Merapi, Indonesia

Physico-Chemical Properties of Volcanic Soils under Different Perennial Plants from Upland Area of Mt. Merapi, Indonesia

Comparison of two soil quality assessment models under different land uses and topographical units on the southwest slope of Mount Merapi

Competitive adsorption of phosphate with sulfate, humic acid, and fulvic acid by allophane in different parent materials in Central Java

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