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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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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

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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