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Apong Sandrawati
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Pengaruh Jenis Bahan Organik dan Bakteri Pereduksi Sulfat Terhadap Konsentrasi Fe dan Mn dalam Remediasi Air Asam Tambang Apong Sandrawati; Pujawati Suryatmana; Ikrar Nusantara Putra; Nadia Nuraniya Kamaluddin
Soilrens Vol 17, No 1 (2019)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (532.429 KB) | DOI: 10.24198/soilrens.v17i1.23245

Abstract

Acid mine drainage (AMD) is one of the important issues in the environmental damage caused by coal mining activity. Remediation of AMD could be done by active and passive method. Passive method is cheaper and more efficient. Constructed wetland is one of passive method in AMD remediation. The objective of this research was to determine the effect of organic matter and sulphate reducing bacteria (SRB) combination to Fe and Mn concentration in water and substrate. The research used experimental design of Randomized Block Design (RBD) consisted of nine treatments and repeated three times. The result of this research showed that sulphate reducing bacteria and kind of organic matter combination significantly affected water pH, concentration of soluble Mn, and concentration of Fe and Mn in the substrate. Application of 100 % compost and SRB inoculation gave the best increase of water pH. Application 100 % sawdust with SRB inoculation provided the lowest concentration of soluble Fe in outlet water. Meanwhile, 100% sawdust application without inoculation of SRB increased of Mn soluble concentration in outlet water.
Utilization of Steel Slag in Agriculture (Review) Rina Devnita; Apong Sandrawati; Mahfud Arifin
Soilrens Vol 19, No 1 (2021)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v19i1.35090

Abstract

The process of refining iron by Blast Furnace (BF) or Electric Arc Furnace (EAF) produces steel and by-product: steel slag. This by-product can be used for various fields such as construction, industry and agriculture. This paper aimed to discuss the use of steel slag in agriculture as fertilizer, lime and ameliorant in the soils. The content of elements and compounds in steel slag is the basic component for the utilization of this material, therefore they are displayed quite completely. The presence of other contents like of heavy metals which are classified as hazardous toxic materials is also stated. Utilization of steel slag for agriculture has been carried out widely in various countries such as Japan, Germany and the United States. There have been many studies of steel slag in Indonesia that prove the benefits of steel slag in adding nutrients and improving soil reactions. However, the use of this material is still limited to research field, has not been widely used. Meanwhile, many research has proven that steel slag can improve some chemical characteristics like pH and CEC, as well improve Ca, Mg and Si content. Steel slag can release P from retention and fixation and Andisols and Ultisols. Research showed that steel slag improved the yield of rice, maize, horticultural and industrial plants.
Potensi Bakteri Pereduksi Sulfat dan Jenis Bahan Organik dalam Pengolahan Air Asam Tambang menggunakan System Constructed Wetland Tanaman akar Wangi (Vetiveria zizanioides L) Pujawati Suryatmana; Apong Sandrawati; Ikrar Nusantara Putra; Nadia N. Kamaluddin
Soilrens Vol 18, No 2 (2020)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v18i2.32075

Abstract

Acid mine drainage (AMD) is a waste product from coal mining process. Acidic waste will impose a serious environmental issue such as organism annihilation and destruction of environmental ecosystem. Proper AMD management is required in order to restore polluted water to the proper standard condition. The Constructed Wetland system with Akar Wangi (Vetiveria zizanioides L.) and various organic growth medium compositions and sulphate-reducing bacteria and the composition of the media for several types of organic matter with sulfate-reducing bacteria (SRB) inoculation as stimulant was deemed a promising solution. This study was designed in randomized block design (RBD) consisted of nine treatments with three replicates. The treatments were: (A) = without organic matter and without SRB inoculation (control), (B) = 100% compost, (C) = 100% sawdust, (D) = 50% compost + 50% sawdust, (E ) = no organic matter + SRB inoculation (105 MPN ml-1), (F) = 100% compost + SRB inoculation, (G) = 100% sawdust + SRB inoculation, H = 50% compost + 50% sawdust + SRB inoculation, I = 75% compost + 25% sawdust + SRB inoculation. Results showed that 100% compost and SRB application increased polluted water pH. Application of 100% sawdust with or without SRB inoculation gave the highest reduction in sulfate content. SRB also has the potential to increase the height of Akar Wangi plant.
Ketidaksinambungan Litologi dan Karakteristik Pedogenetik pada Beberapa Andisols di Jawa Barat Rina Devnita; Mahfud Arifin; Ridha Hudaya; Apong Sandrawati; Ade Setiawan
Soilrens Vol 16, No 2 (2018)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (866.738 KB) | DOI: 10.24198/soilrens.v16i2.20854

Abstract

ABSTRACT Andisols developed from parent materials of volcanic eruptions. Volcanic eruptions can occur within several periods, resulting in a sequence of soil layers that can differ from each period and produced lithologic discontinuity in the soil profile. Lithologicac discontinuity was investigated in Andisols developed from the eruptions of Mt. Tangkuban Parahu (Holocene, andesitic) and Mt. Tilu (Pleistocene, basaltic) in West Java through morphological observations of three profiles at each location. The results showed that there was lithologic discontinuity in all profiles indicated by changed in color by Munsell Soil Colour Chart, organic carbon, texture and structure as the specific A buried horizon that developed from the parent material of the earlier eruption period than the horizons above. It is recommended to carry out the mineralogical and micromorphological analyses to determine the differences in minerals and micromorphology of the discontinue horizons and carbon-dating analysis in the buried layer to determine the age of the soil and the period of eruption that developed the soil.Keywords: A buried horizon, Munsell Soil Colour Chart, organic carbon, soil mineralogy, soil morphology
Pengaruh Macam Bahan Organik terhadap Nilai pH, pH0, Retensi P dan P tersedia pada Andisol Asal Ciater Apong Sandrawati; Teddy Marpaung; Rina Devnita; Yuliati Machfud; Mahfud Arifin
Soilrens Vol 16, No 2 (2018)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (503.618 KB) | DOI: 10.24198/soilrens.v16i2.20861

Abstract

ABSTRACT High phosphate (P) retention is a major problem in Andisol that causes low phosphate availability. This study was conducted to determine the effect of various organic matters for pH0, P retention and available P on Andisol obtained from Ciater, West Java. Organic matters used in this experiment consisted of humic acid, straw compost, cow manure, goat manure and chicken manure. This experiment was conducted from April to September 2017 at Soil Physics Laboratory, Faculty of Agriculture, Padjadjaran University. The design used in this experiment was a non Factorial Completely Randomized Design (RAL) with eleven treatments and three replicates. The treatments were control, humic acid (2 ml and 4 ml), straw compost (5% and 10% of the soil weight), cow manure (5% and 10% of the soil weight), goat manure (5% and 10% of the soil weight) and chicken manure (5% and 10% of the soil weight). The result showed that humic acid and various types of organic matter incubated for 3 months decreased pH0 and P retention, improved available P, but decreased pH0 and P retention as well as a negligible increase in available P.Keywords: Andisol, incubation, Humic Acid, pH0, P Retention, available-P
Karakterisasi dan Klasifikasi Ultisols Yang Berkembang dari Dua Bahan Induk di Kabupaten Serang, Provinsi Banten Mahfud Arifin; Ganjar Herdiansyah; Apong Sandrawati; Rina Devnita
Soilrens Vol 19, No 2 (2021)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v19i2.38362

Abstract

The effort to utilize the soils optimally, especially Ultisols, requires an appropriate understanding related to their characteristics. The characteristics of Ultisols are sturdily influenced by soil-forming factors, viz. climate, parent material, pedogenic age and topography. The purposes of this study were to determine the chemical, physical, mineralogical characteristics and soil development classification level of Ultisol from two different types of parent rock. This research was conducted in Kampungbaru Village, Petir District and Sukalaksana Village, Curug District, in Serang Regency, Banten Province. These two villages represented different parent materials, namely andesite lava parent material of Holocene age (Kampungbaru Village) and tuff dacite parent material of early Pleistocene age (Sukalaksana Village). The research method was descriptive, comparative and survey. Soil classification was based on the Soil Survey Staff. The results showed that Ultisols developed from dacite tuff and andesite lava did not show contrasting differences in soil properties. The level of weathering of the two pedons was at the senile stage and the level of soil development of the two pedons was at the argillic stage. The soil classification of Kampungbaru pedon was Typic Palehumults, very fine, kaolinitic, isohyperthermic, while the Sukalaksana pedons was Arenic Paleudults, fine, kaolinitic, isohyperthermic
Investigation of Heavy Metal Cd, Pb and Cr in Andisols as Affected by the Amelioration of Steel Slag and Rice Husk Bokashi Rina Devnita; Mahfud Arifin; Apong Sandrawati; Rija Sudirja
Soilrens Vol 18, No 1 (2020)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v18i1.29040

Abstract

The application of steel slag and bokashi of husk in Andisols has been acknowledge to decrease P-retention and increase available P. However, steel slag contains heavy metals that may harm soils. The objective of this research was to find out the effect of amelioration steel slag and bokashi of husk in Andisols on the heavy metals contents (Cd, Pb and Cr) in the soil. The treatments were arranged in randomized block designed in factorial pattern with two factors: steel slag and bokashi of husk, each consisted of four level: 0, 2.5, 5.0 and 7.5 % in 10 kg soil weight (w/w), thus the total was 16 combined treatments and repeated three times. The treatments were incubated for four months and then the P-retention, available P, Cd, Pb and Cr contents in the soil were analyzed. The results showed that steel slag and bokashi of husk interacted in decreasing 6.67% of P-retention and increasing 60 ppm of available P. This research also informed that Cd, Pb and Cr contents in the soil after the treatments were still lower than the critical value that were permitted.
Land Capability and Suitability Assessment for Sweet Potato (ipomoea batatas l.) in Cimanggung Sub District, Citarik Sub watershed, West Java Rina Devnita; Marenda Ishak Sonjaya Sule; Cucu Suherman; Apong Sandrawati; Widara Almaghfirah Ismail
Soilrens Vol 19, No 2 (2021)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v19i2.38358

Abstract

Cimanggung Sub District, located in the area of Citarik Sub Watershed, West Java, Indonesia, is one of important watershed that support life and water need. However, the pollution in this sub watershed is high, degraded the environment. Therefore, the agricultural management must be suitable with land capabilty and land suitability. The objective of this resarch was to evaluate the land capability and suitability for sweet potato (Ipomoea batatas, L). The assessment used the limiting factor for land capability and matching table for land suitability. The results showed that the Cimanggung Sub District consisted of 13 land mapping unit (LMU) with land capability classes: II- L2,E1,R1, LMU 8; III-P4, LMU 10; IV- L3, KE6, LMU 1, 2, 4, 6, 9, 12 and 13; VI-L4, LMU 5 and 7; VII15, LMU 3 and11. Areas suitable for agriculture were classes II, III, and IV (LMU 8, 10, 1, 2, 4, 6, 9, 12 and 13) and the areas non suitable for agriculture were classes VI and VII (LMU 5, 7 and 3). The actual land suitability for Cilembu sweet potato was S3 at LMU 8 and 10 and N1 at LMU 1, 2, 4, 6, 9, 12, and 13 with the main limiting factors were nutrient retention and rooting zone. Liming is the management that can be used to improve potential land suitability to LMU 1, 2, 4, 6, 12 and 13, which improve Nnr to S3nr, and to LMU 8 and 10, improve S3nr to S2nr. Clay fraction limiting factor in LMU 9 was irreparable.
Pengaruh Penambahan Dosis Pupuk Fosfat terhadap Pertumbuhan dan Hasil Tanaman Jagung (Zea Mays, L) pada Inceptisol asal Jatinangor eso solihin; Rija Sudirja; Apong Sandrawati; Maya Damayani; Nadia N. Kamaluddin
Soilrens Vol 17, No 1 (2019)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (602.289 KB) | DOI: 10.24198/soilrens.v17i1.23217

Abstract

Corn is one of the important commodities in Indonesia that is not only used as food but also as livestock feed and industry, as well as alternative fuels (biofuels). Degradation of soil fertility became one of the factors limiting the production of this commodity. The purpose of this study was to determine the effect of innovative phosphate fertilizer on the growth and yield of sweet corn on Inceptisols with low fertility. The research was conducted from September 2018 to January 2019. Randomized Block Design (RBD) was used with treatment arrangements as follows: A = Control (without P), B = Recommended NPK dosage (300 kg / ha urea + 150 kg / ha SP-36 + 50 kg / ha K), C = ¼ P (300 kg / ha N + 25 kg / ha SP-36 Inv + 50 kg / ha K), D = 1/2 P (300 kg / ha N + 50 kg / ha SP36 Inv + 50 kg / ha K), E = ¾ P (300 kg / ha N + 75 kg / ha SP-36 Inv + 50 kg / ha K), F = 1 P (300 kg / ha N + 100 kg / ha SP-36 Inv + 50 kg / ha K), G = 1 ¼ P (300 kg / ha N + 125 kg / ha SP-36 Inv + 50 kg / ha K), H = 1½ P (300 kg / ha N + 50 kg / ha SP-36 Inv + 150 kg / ha K), I = 1 ¾ P (300 kg / ha N + 175 kg / ha SP-36 Inv + 50 kg / ha K), J = 0 (Without NPK). The results showed that the SP-36 innovative inorganic fertilizer that was given together with urea and KCl increased the yield of sweet corn equivalent to the standard yield of corn in NPK fertilizer. The treatment with the highest results is 1½ P doses of SP-36 innovation results and P from standard NPK both of which are equivalent to 150 kg / ha P. The yield of sweet corn yields ranges from 21.16 - 21.56 tons per hectare.
Evaluasi Keberhasilan Reklamasi Lahan Bekas Tambang Pasir (Galian C) dengan Tanaman Gamal (Gliricidia sepium (Jacq.) Steud) (Studi Kasus di Desa Cibeurem Wetan, Cimalaka, Sumedang, Jawa Barat) Ikrar Nusantara Putra; Dhea Rakhmat Ginanjar; Apong Sandrawati
Soilrens Vol 12, No 1 (2014)
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v12i1.29432

Abstract

Cimalaka is well known for its high quality sands for building material. Unfortunately, the sand mines opened in Cimalaka areas are less managed and have degraded. Usually, the soil has no organic horizon so that no vegetation covered the soils. The land was mined repeatedly without appropriate reclamation effort, thus supported the invasive plants species to cover the site. Gliricidia sepium has known as invasived plants. This research was conducted to evaluate ecosystem function of post-sand mining land Cimalaka, Sumedang, West Java that revegetation with Gliricidia sepium. The research showed that Gliricidia sepium was high potentially improved soil quality in eks sands mining. The roots of Gliricidia sepium increase the content of organic in soils, so that with the litters. The enhancement of organic content potentially impacted increasing organism activities that would impact to soil quality improvement. Soils quality improvement showed by increasing soil pH and organics contents into more suitable for organism growth.
Co-Authors Ade Setiawan Cucu Suherman Dhea Rakhmat Ginanjar Diyan Herdiyantoro Eso Solihin Evi Entang Fatimah Ferdy Firmansyah Ganjar Herdiansyah Haris Maulana Iin Susilawati Ikrar Nusantara Putra Ikrar Nusantara Putra Ikrar Nusantara Putra Mahfud Arifin Marenda Ishak Sonjaya Sule Maya Damayani Mieke Rochimi Setiawati Nadia N. Kamaluddin Nadia Nuraniya Kamaluddin Novarina Darmawan Putri Pujawati Suryatmana Rachmat Harryanto Ridha Hudaya Rija Sudirja Rina Devnita Teddy Marpaung Uum Umiyati Wawan Kurniawan Widara Almaghfirah Ismail Yuliati Machfud Zaenal Mutaqin