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All Journal JTSL (Jurnal Tanah dan Sumberdaya Lahan) Jurnal Fisika Unand Jurnal Solum Jurnal Biologi Tropis Jurnal Agrotek Tropika JURNAL AGROHITA Puitika Community Development Journal: Jurnal Pengabdian Masyarakat Journal of Socio Economics on Tropical Agriculture (Jurnal Sosial Ekonomi Pertanian Tropis) (JOSETA) Prosiding Seminar Nasional Pengabdian Masyarakat

J Juniarti

Andalas University

Author-ID : 657786

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PENGARUH WAKTU REFLUKS TERHADAP KONDUKTIVITAS LISTRIK ZEOLIT SINTETIK DARI ABU DASAR Rika Juniarti Waleza; Afdhal Muttaqin
Jurnal Fisika Unand Vol 4 No 1: Januari 2015
Publisher : Universitas Andalas

ABSTRAKTelah dilakukan sintesis zeolit dari limbah abu dasar batubara dengan metode refluks menggunakan NaOH sebagai aktivator. Variasi waktu refluks yang dilakukan adalah 12, 24 dan 36 jam dengan konsentrasi molar NaOH 3M dan 5M. Pengujian yang dilakukan meliputi penentuan struktur kristal menggunakan X-ray Difraction (XRD), morfologi permukaan menggunakan Scanning Electron Microscope (SEM) dan penentuan konduktivitas dengan LCR Meter. Hasil XRD memperlihatkanÂ bahwa zeolit yang dihasilkan merupakan tipe Na-X, Na-P dan Hikroksisodalit. Penambahan waktu refluks menjadikan zeolit lebih seragam yang dilihat dari puncak-puncak pada kerakterisasi XRD dan morfologi permukaan dari hasil SEM. Pada waktu refluks 36 jam, sampel dengan konsentrasi 5MÂ menunjukkan ukuran partikel 0,049 Âµm. Hasil LCR Meter menunjukkan nilai konduktivitas sampel 0,765 x 10-6 S/cm hingga 2,499 x 10-6 S/cm, dimana konduktivtas ini menunjukkan bahwa zeolit merupakan bahan semikonduktor.Kata kunci : abu dasar, zeolit, metode refluks, variasi molar, konduktivitas.AbstractThe synthesis of zeolites from coal bottom ash waste with NaOH as activator, by using reflux method has been performed. Reflux time was varied from 12, 24 and 36 hours with the NaOH molar concentration of 3 and 5M. The charateristics of sample are observed from crystal structure through XRD, surface morphology through SEM and conductivity through LCR Meter observations. The results of XRD showed that the type of zeolite is Na-X, Na-P, and Hidroksisodalite. The increase of reflux time produces zeolits which are more uniform that can be observed from XRD and SEM result. The result of SEM showed that the sample with reflux time of 36 hours and concentration of 5M has more regular surface morphology and smaller particle size (0,049 Âµm). Conductivity obtained from the LCR Meter showed that its value varied from 0.765 x10-6 S / cm to 2.499 x 10-6 S /cm, indicating that zeolite is a semiconductor material.Keyword: coal bottom ash, zeolit, reflux time, conductivity.Â

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.

HUBUNGAN STOK KARBON TANAH DAN SUHU PERMUKAAN PADA BEBERAPA PENGGUNAAN LAHAN DI NAGARI PADANG LAWEH KABUPATEN SIJUNJUNG Gunadi Gunadi; Juniarti Juniarti; Gusnidar Gusnidar
Jurnal Solum Vol 17, No 1 (2020)
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

The content of soil C-organic is strongly influenced by land management. Plants tend to increase soil organic C-stock, however an increase in soil temperature can increase the rate of decomposition of soil organic matter which will reduce soil organic C-stock. The aim of the study is to look at the relationship of soil organic carbon stock (SOCS) with changes in soil surface temperature. The study was conducted using a survey method consisting of 5 stages, namely preparation, pre-survey, main survey, soil analysis in the laboratory and data processing. Soil sampling is done by purposive random sampling under several land units (LU). LU is limited by the order of the soil, slope, and land use. Based on the land unit map, we found 14 land units in the study area. Soil samples were taken at a depth of 0-20 cm. Surface temperature measurements are carried out directly in the field using a room temperature thermometer. The parameters analyzed are organic-C, organic particulate-C, and bulk density (BD). The research data were processed statistically using simple linear regression equations. The results showed that the measurement of rice field surface temperature had the highest temperature of 34 0C, and rubber plantations had the lowest temperature of 28 0C. Organic-C affects soil BD, the higher the value of organic-C, the lower the BD value. The highest carbon stock was found in soil unit 10 with rubber plantations with a slope of 8-15%, 41 kg m-2 and decreased with increasing slope. The difference in the value of SOCS in rice fields is influenced by land management, because there is no return of crops residue in the form of straw to the ground. The results of the regression analysis showed that surface temperature did not have a significant effect on the SOCS value.Keywords : carbon stock, land use, Padang Laweh

EVALUASI KESESUAIAN LAHAN DAN POTENSI PRODUKSI TANAMAN MANGGIS (Garcinia mangostana L.) DI KAB.50 KOTA Juniarti Juniarti; Yulnafatmawita Yulnafatmawita; Sudewi Isminingsih
Jurnal Solum Vol 5, No 1 (2008): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

This research discusses the land suitability of mangosteen field in Kab.50 Kota Kota Payakumbuh, predict production potential of mangosteen based on the climate suitability, soil and management its field. Composite soil sample is taken through drilling 0 – 60 cm which is carried out on research site. Quantitative model from FAO (1976) is used to evaluate the land suitability. This model combines enviromental data, climate and soil condition (soil physic and chemistry characteristic), so that production potential of field based on climate (Climate Production Potential = CPP) can be maesured quantitatively. By entering the real data of plant production, this model can predict the real plant production in a field (Land Production Potential = LPP). Result of this research shows that climate and physical condition of land are very suitability to grow mangosteen, and its level appropriateness is S1 (very suitability). Then, production potential 3 – 12 ton/ha/year can be increased to > 15 ton/ha/year if the management of land is improved.Key Words : Land suitability evaluation, Climatic Production Potential, Land Production Potential

PEMETAAN BEBERAPA CIRI KIMIA TANAH DI NAGARI SITIUNG KECAMATAN SITIUNG KABUPATEN DHARMASRAYA Gunadi Gunadi; Juniarti Juniarti; Gusnidar Gusnidar
Jurnal Solum Vol 14, No 1 (2017): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Sitiung located in Dharmasraya, West Sumatera has 5804.3 haarea which was dominated by smallholder agriculture. The soil chemical properties in Sitiung village were often analysed by some scientists, but there was no map yet provided for the soil properties information. The purpose of the study was to determineand tocreate mapofsomesoil chemical characteristics in Sitiung Village, Sitiung District, Dharmasraya Regency. The study was conducted using a survey method, as well as spatial data analysis model. Soil sampling were taken in purposive random sampling under several land units (LU), the land units (LU) were limited by soil order, slopes, and land use. LU 1: Ultisols, flat, mixed garden; LU 2: Ultisols, flat, rice; LU 3: Entisols, flat, rice; LU 4: Entisols, flat, mixed garden; LU 5: Entisols, mild, shrubs; LU 6: Oxisols, mild, shrubs; LU 7: Entisols, mild, oil palm; LU 8: Entisols, flat, oil palm; LU 9: Oxisols, mild, oil palm; LU 10: Oxisols, flat, oil palm; LU 11: Ultisols, mild, oil palm; LU 12: Oxisols, steep, oil palm. Parameters analysed were pH, Al-exchangable, organic-C, total-N, P-available, CEC, and base saturation. The spatial data analysis and data processing were used to transform soil analysis results into a thematic soil map.The result showed that the highest pH value was 5.76 (slightly acid) found in LU 3, and the lowest pH value was 4.37 (highly acid) in LU 10. The highest Al-exchangable was 9.72 cmol/kg in LU 6, while the lowest value was 0.92 cmol/kg in LU3. Furthermore, the highest value oforganic-C was 3.12 % (high) in LU 2, and the lowest was 1.78 % (low) in the LU 6. The total-N content wasmedium. The highest content of P-available was 14.7 ppmin LU 10, and the lowest was 7.93 ppm (low) in the LU 4. The highest CEC was 12.74 cmol/kg (low) and the lowest was 4.70 cmol/kg (very low) in LU 7. The basic cation content was found to be low to moderate.Keyword: Land Unit, Sitiung Village, Soil chemical properties, Thematic soil map

HUBUNGAN BAHAN ORGANIK TANAH DENGAN SUHU PERMUKAAN PADA BERBAGAI PENGGUNAAN LAHAN DI NAGARI PADANG LAWEH KABUPATEN SIJUNJUNG Gunadi Gunadi; Juniarti Juniarti; Gusnidar Gusnidar
Jurnal AGROHITA: Jurnal Agroteknologi Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan Vol 5, No 2 (2020): Jurnal Agrohita
Publisher : Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jap.v5i2.2272

Padang laweh located in Koto VII, West Sumatra has 1.569,92 ha area which was dominated by mixed holder agriculture. The availability of soil organic C is influence by land management. Vegetation density will increase the soil organic C content, but an increase in soil temperature can increase the rate of soil organic matter decomposition which will decrease the soil organic C content. The purpose of study was to analyze the relation of soil organic matter (SOM) and soil organic carbon stock (SOCS) with land surface temperature. The study was conducted using a survey method consisting of 5 stage, namely preparation, pre survey, main survey, analysis of soil in laboratories and data processing. Soil sampling was taken in purposive random sampling under several land unit (LU), the LU were limited by soil order, slopes, and land use. Based on the land unit map, there are 14 land unit. Soil samples was taken in a composite manner at a depth of 0-20 cm. Parameter analysed were organic-C, particulate organic-C, and BD. Surface temperature measurement are carried out directly in the field using a mercury thermometer. The data of research result are processed statistically using simple linear regression equations. The result showed that the surface temperature measurement of rice field has highest temperature of 34 0C, and the rubber plantation has the lowest temperature 28 0C. Organic-C affects to soil BD, the higher organic-C value the lower BD value. The highest soil organic matter content (4.29%) and the highest carbon stock (41 kg/m2) was found in land unit 10 with rubber plantation with slope 8-15% and decreased with increasing slope. The results of the regression analysis showed that surface temperature did not have a significant effect on the value of SOM and SOCS.Keywords: Regresi equation, Soil survei, Topografi

SOIL HEALTH ASSESMENT WITH CORNELL METHOD ON SOME PLANT PATTERN BY CORN AT KENAGARIAN MUNGKA Fadil Hukama Hamdi; Juniarti Juniarti; Agustian Agustian; Ika Ayu Putri Septyani
Jurnal Agrotek Tropika Vol 10, No 4 (2022): JURNAL AGROTEK TROPIKA VOL 10, NOVEMBER 2022 (ON PROGRESS)
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v10i4.5961

Planted corn by intensively made decreased soil health and decreasing soil capacity to support plant growth caused of nutrient is not available, poor microbial activity, increasing soil acidity and soil crusting. If this problem do in long term, it will make decrease soil reciliency and decrease plant producitvity. This research was aim to investigate of soil health assesment with cornell method on some plant pattern by corn at Kenagarian Mungka. This research used explorative descriptive method through land survey and soil analyses in the laboratory. The samples were taken based on purposive random sampling. There were three land unit planted by corn with plant pattern are monoculture corn, corn-eggplant and corn-cassava. Each selected soil indicator scoring to discover the soil health correlation test to know relation between parameter with soil health.This research showed that Mungka’s land unit planted by corn have moderate-high category for soil health, monoculture corn had the highest soil health by 65.96, corn-cassava had soil health value by 63.94 and the lowest is corn-eggplant with 63.35 soil health value. This research used three component of soil those are soil chemical, biology, and physic. This research showed that some indicator have the significant determinant indicator for soil health are OM (r=0,9209), pH (r=0,9471), and respiration (r=0,6055). Farmer was do the addition of organic matter from poultry manure to the land regularly. Based on this research, organic matter is the most important thing to keep soil health especially to encourage corn productivity.

Toponimi Kawasan Penduduk di Kenagarian Tanjung Gadang Kecamatan Tanjung Gadang Kabupaten Sijunjung Sastra Putri Juniarti; Nadra Nadra; Alex Darmawan
Puitika Vol 18, No 2 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/puitika.18.2.66-79.2022

Penelitian ini dilatarbelakangi oleh masih sedikitnya penelitian toponimi yang dilakukan di daerah Sumatera Barat. Penelitian toponimi di Kenagarian Tanjung Gadang difokuskan pada nama-nama kawasan tempat tinggal penduduk. Penelitian ini bertujuan untuk: (1) mendeskripsikan arti leksikal dan arti kultural penamaan kawasan penduduk di Kenagarian Tanjung Gadang dan (2) mengklasifikasikan nama kawasan penduduk di Kenagarian Tanjung Gadang berdasarkan asal-usul penamaan.Dalam pemecahan masalah penelitian ini, terdapat tiga tahap strategis yang dilakukan, yaitu penyediaan data, penganalisisan data, dan penyajian hasil analisis data. Metode dan teknik penyediaan data yang digunakan adalah metode cakap dan metode simak. Dalam analisis data digunakan metode padan translasional dan padan referensial. Selanjutnya, dalam penyajian hasil analisis data digunakan metode informal.Berdasarkan analisis data yang dilakukan, didapatkan arti leksikal dan arti kultural nama kawasan tempat tinggal penduduk di Kenagarian Tanjung Gadang. Nama-nama kawasan tempat tinggal penduduk di Kenagarian Tanjung Gadang diklasifikasikan menjadi tujuh kelompok. Pengklasifikasian tersebut, antara lain pengklasifikasian nama berdasarkan topografi, tumbuhan, suku masyarakatnya, fungsi daerah, peristiwa yang terjadi, posisi, dan nama binatang.

KAJIAN KLASIFIKASI TANAH DI NAGARI SUNGAI KAMUYANG KECAMATAN LUAK KABUPATEN LIMAPULUH KOTA Dyah Puspita Sari; Azwar Rasyidin; Amrizal Saidi; J Juniarti
Jurnal Tanah dan Sumberdaya Lahan Vol. 7 No. 2 (2020)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

This study was aimed to examine the classification of soil in Nagari Sungai Kamuyang, Luak District, Limapuluh Kota Regency by the USDA Soil Taxonomy up to the level of family and synchronized with the National Soil Classification. This study was conducted in Nagari Sungai Kamuyang. Soil analysis conducted at the Laboratory Soil Department Faculty of Agriculture Andalas University, Soil Chemistry Laboratory and the Mineralogy Laboratory of Soil Research Institute in Bogor. This study used a survey method with purposive sampling random sampling based on unit land. This study consisted of preparation, pre-survey, the main survey, laboratory analysis, and data processing. Based on the results of research on the study of the soil classification in Nagari Sungai Kamuyang, Luak District, Limapuluh Kota Regency, showed soil classification based on Soil Taxonomy on the profile 1 was classified as the Ordo: Inceptisols, Sub Ordo: Udepts, Great Group: Dystrudepts, Sub Group: Andic Dystrudepts, Family: Fine Dust, Kaolinite, Isohypertermik, Andic Dystrudepsts. The profile 2 was classified as an Ordo: Andisols, Sub Ordo: Udands, Great Group: Hapludands, Sub Group: Typic Hapludands, Family: Medial, Amorfik, Isohypertermik, Typic Hapludands. Based on the National Soil Classification, profile 1 was classified as Type: Latosol, Various: Latosol Umbrik. Profile 2 was classified as Type: Andosol, Various: Andosol District.

EVALUASI KESESUAIAN LAHAN UNTUK TANAMAN MANGGIS DAN POTENSI PENGEMBANGANNYA DI KECAMATAN PAUH KOTA PADANG Dyah Puspita Sari; Ranti Novia; J Juniarti
Jurnal Tanah dan Sumberdaya Lahan Vol. 8 No. 2 (2021)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Pauh District was chosen as mangosteen plantation development centre in Padang City. This development should be based on the land suitability so that the mangosteen plant are able to grow according to the climate and soil conditions. This research was conducted in Pauh District, Padang City and Soil Science Laboratory Andalas University. This study used a survey method that consisted of preparation, pre-survey, the main surveiy, laboratory analysis, and data processing. Evaluation of land suitability was done with matching method which compare the characteristics of land suitability for mangosteen growth. The results of research showed that land suitability for mangosteen was classified into S3 (marginally suitable) with subclass S3nr for land unit SL1, SL2, SL3, SL4, SL7, SL8, SL9, SL11, SL15; subclass S3eh for land unit SL14; subclass S3nr,eh for land unit SL5 and SL10. Land unit SL6, SL12, SL13, and SL16 were classified into S2 (moderately suitable) with subclass S2wa,nr for land unit SL6 and SL16; subclass S2wa,rc,nr,eh for land unit SL12; subclass S2wa,rc,nr for land unit SL13. The limiting factors was common to each land unit were nutrient retention (nr) and erosion (eh). There are 3 villages (Lambung Bukit, Limau Manis, and South Limau Manis) in Pauh District which have the greatest potential to be developed as mangosteen plantation development areas with total area was 5,862.42 ha.

Co-Authors . Reflinaldon Afdhal Muttaqin Afrima Sari Agil Syah Putra Agustian Agustian Alex Darmawan Amrizal Saidi Aries Novita Putri Auzar Syarif Awang Al Hamdi Azwar Rasyidin Dian Fiantis Doni Hariandi Dyah Puspita Sari Fadil Hukama Hamdi Fatma Andria Wahyuni Gunadi Gunadi Gunadi Gunadi Gunadi Gunadi Gusnidar, G Hasmiandy Hamid Ilham Wibowo Indra Dwipa Irfan Suliansyah Meisilva Erona Sitepu Musliar Kasim Nadila Aulia Ardi Nandita Samaralya Tori Nurfina Yenti Ranti Novia Ryan Budi Setiawan Shinta Mulyana Siska Effendi Siti Rahmah Sudewi Isminingsih Tengku Riza Zarzani N Vera Septaria Y Yuzirwan Yaherwandi Yulmira Yanti Yulnafatmawita Yulnafatmawita

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