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All Journal AGROEKOTEKNOLOGI JURNAL ILMU PERTANIAN PERTANIAN TROPIK
Bintang Sitorus
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry

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Evauasi Kesesuaian Retensi Hara untuk Tanaman Bawang Merah (Allium ascalonicum) di Kecamatan Baktiraja Kabupaten Humbang Hasundutan Sumatera Utara Dicky Alamsyah Pulungan; Supriadi Supriadi; Bintang Sitorus
Jurnal Agroekoteknologi Vol 3, No 4 (2015)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (587.778 KB) | DOI: 10.32734/jaet.v3i4.11800

Abstract

The aim of this research is to evaluate the suitability of nutrient retention for Shallot (Allium ascalonicum) in Baktiraja Sub-district of Humbang Hasundutan District, North Sumatera Province. The method of this search is survey method with Purposive Random Sampling Method with 30 samples and 3 meters, which is pH, CEC, and C-Organic. The result of this research show that land quality nutrient retentiont at Baktiraja Sub-District of Humbang Hasundutan District for shallot (Allium ascalonicum) is moderately suitable (S2). The characteristics for pH and C-Organic are highly suitable (S1), and at the same time is moderately suitable (S2) for CEC.Keywords: Shallot, pH, CEC, C-Organic
Pengaruh Kombinasi Pasir Vulkan, Zeolit, dan Air Laut Terhadap Sifat Kimia Tanah dan Produksi Padi Varietas Lokal di Lahan Gambut Dataran Tinggi Toba Juriaman Purba; Sarifuddin Sarifuddin; Bintang Sitorus
Jurnal Agroekoteknologi Vol 3, No 4 (2015)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (148.84 KB) | DOI: 10.32734/jaet.v3i4.11808

Abstract

The objective of this research is to study the effect of combination of volcano sand, zeolite, and sea water to soil chemical properties and the production of rice plant local varieties. This research was conducted in highland peat, village of Hutabagasan Sub District of Dolok Sanggul Distric Humbang Hasundutan North Sumatra. This research used non factorial RAK with four treatments, those are G0 (control), G1 (volcano sand 5 kg), G2 (5 kg + volcano sand sea water 2.5 L), G3 (volcano sand sea water 5 kg + 2.5 L + zeolite 1 kg) and 3 replicants. The results showed that the addition of volcano sand 5 kg + sea water 2,5 L + zeolite 1 kg decreased the pH of the soil, K - exchange, Ca - exchange and percentage base saturation, increased the value of the electrical conductivity (EC), Na - exchange, Mg - exchange. The addition of volcano sand 5 kg + sea water 2,5 L + zeolite 1 kg decrease dry weight of the plant and the number of grains per panicle.Keywords: volcano sand, zeolite, sea water, highland peat soil, Rice
Perubahan Bentuk P Oleh Mikroba Pelarut Fosfat dan Bahan Organik Terhadap P-tersedia dan Produksi Kentang (Solanum tuberosum L.) pada Tanah Andisol Terdampak Erupsi Gunung Sinabung Marta Ritonga; Bintang Sitorus; Mariani Sembiring
Jurnal Agroekoteknologi Vol 4, No 1 (2016)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.08 KB) | DOI: 10.32734/jaet.v4i1.12883

Abstract

Andisol was soil with high phosphate retension (>85 %) so that Phosphate not available to plants. Phosphate (P) was important nutrient that used in photosynthesis process, roots growth, flower, fruit and seed forming. The object of this research is to know the effect of phosphate solubilizing microbe (MPF) application, some organic matter sources and both of interaction to changes of phosphate form to phosphate availability and potatos (Solanum tuberosum L.) production at Andisol soil impacted Sinabung Mountain eruption. This research was conducted in Kuta Rakyat Village, Naman Teran Subdistrict, Karo Regency on February until July 2015. The research used factorial Random Device Group Methode (RDG) consists of two treatments and two replications. The first factor is phosphate solubilizing microbe with four treatments: control, phosphate solubilizing bacterial (30 ml), phosphate solubilizing fungi (30 ml), phosphate solubilizing bacterial and fungi (15 ml + 15 ml). The second factor is organic matter with five treatments: control, cow manure (100 g/plant), chicken manure (100 g/ plant), straw (100 g/ plant), Tithonia diversifolia (100 g/ plant). The result showed that phosphate solubilizing fungi and chicken manure application, increased P availability and productions of potato (Solanum tuberosum L.) plants.Key Words : Andisol, Phosphate solubilizing microbe, organic matter, availability phosphate,production of potatos (Solanum tuberosum L.)Andisol was soil with high phosphate retension (>85 %) so that Phosphate not available to plants. Phosphate (P) was important nutrient that used in photosynthesis process, roots growth, flower, fruit and seed forming. The object of this research is to know the effect of phosphate solubilizing microbe (MPF) application, some organic matter sources and both of interaction to changes of phosphate form to phosphate availability and potatos (Solanum tuberosum L.) production at Andisol soil impacted Sinabung Mountain eruption. This research was conducted in Kuta Rakyat Village, Naman Teran Subdistrict, Karo Regency on February until July 2015. The research used factorial Random Device Group Methode (RDG) consists of two treatments and two replications. The first factor is phosphate solubilizing microbe with four treatments: control, phosphate solubilizing bacterial (30 ml), phosphate solubilizing fungi (30 ml), phosphate solubilizing bacterial and fungi (15 ml + 15 ml). The second factor is organic matter with five treatments: control, cow manure (100 g/plant), chicken manure (100 g/ plant), straw (100 g/ plant), Tithonia diversifolia (100 g/ plant). The result showed that phosphate solubilizing fungi and chicken manure application, increased P availability and productions of potato (Solanum tuberosum L.) plants.Key Words : Andisol, Phosphate solubilizing microbe, organic matter, availability phosphate,production of potatos (Solanum tuberosum L.)
Aplikasi Mikroba Pelarut Fosfat dan Bahan Organik untuk Meningkatkan Serapan P dan Pertumbuhan Kentang Pada Andisol Terdampak Erupsi Gunung Sinabung Susianti Susianti Marbun; Mariani Sembiring; Bintang Sitorus
Jurnal Agroekoteknologi Vol 4, No 1 (2016)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (234.254 KB) | DOI: 10.32734/jaet.v4i1.12884

Abstract

Field study aimed to know the effect of P solubilizing microbe and organic matter application to P uptake and Potatos growth at Andisol impacted Sinabung Mountain eruption. The research was conducted in Kutarayat, Namanteran, regency of Karo. The research applied randomized block design factorial with two treatment factor and three replications. Microbe factor were control, P solubilizing bacterial (30 mL), P solubilizing fungi (30 mL), P solubilizing bacterial and fungi (15 mL + 15 mL) and organic matter factor were control, Cow feces organic matter (100 g/plant), chicken feces organic matter (100 g/plant), shaw organic matter (100 g/plant), Tithonia diversifolia (100 g/ plant). Parameter measured were soil pH, available-P, shoot dry weight and plant P uptake. The result showed that phosphate solubilizing fungi and cow feces or chicken feces organic matter aplication could increase P uptake and Potatos growth at Andisol impacted by Sinabung eruption.Keywords : Andisol, phosphate solubilizing microbe, organic matter, P uptake, potatos growthField study aimed to know the effect of P solubilizing microbe and organic matter application to P uptake and Potatos growth at Andisol impacted Sinabung Mountain eruption. The research was conducted in Kutarayat, Namanteran, regency of Karo. The research applied randomized block design factorial with two treatment factor and three replications. Microbe factor were control, P solubilizing bacterial (30 mL), P solubilizing fungi (30 mL), P solubilizing bacterial and fungi (15 mL + 15 mL) and organic matter factor were control, Cow feces organic matter (100 g/plant), chicken feces organic matter (100 g/plant), shaw organic matter (100 g/plant), Tithonia diversifolia (100 g/ plant). Parameter measured were soil pH, available-P, shoot dry weight and plant P uptake. The result showed that phosphate solubilizing fungi and cow feces or chicken feces organic matter aplication could increase P uptake and Potatos growth at Andisol impacted by Sinabung eruption.Keywords : Andisol, phosphate solubilizing microbe, organic matter, P uptake, potatos growth
Karakteristik Fisika Tanah Pada Beberapa Tegakan di Subdas Petani Kabupaten Deli Serdang Sumatera Utara Vidiya Novelin Lubis; Abdul Rauf; Bintang Sitorus
Jurnal Agroekoteknologi Vol 4, No 3 (2016)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.876 KB) | DOI: 10.32734/jaet.v4i3.13024

Abstract

Penggunaan lahan di daerah hulu DAS terdiri dari kawasan hutan, pertanian, dan agroforestri. Berbagai komposisi tegakan tanaman yang  berbeda–beda akan mempengaruhi kondisi tanah baik pada sifat fisika maupun kimia tanah. Penelitian ini bertujuan untuk mendapatkan karakteristik fisika tanah pada beberapa tegakan di Sub DAS Petani. Lokasi penelitian di desa Buluh Awar, Kecamatan Sibolangit Kabupaten Deli Serdang Sumatera Utara, Laboratorium Fisika Tanah dan Laboratorium Riset dan Teknologi Fakultas Pertanian Universitas Sumatera Utara pada bulan Maret sampai dengan Agustus 2015. Teknik sampling berdasarkan metode purposive sampling dengan 4 perlakuan dan 5 ulangan. Data diolah dengan uji Anova dan uji BNT taraf 5%. Hasil penelitian menunjukkan bahwa permeabilitas tanah tertinggi terdapat pada  tegakan tanaman durian (7,310 cm/jam) dan berbeda nyata pada tanah tegakan tanaman aren   (3,842 cm/jam) dan karet (4,606 cm/jam) tetapi tidak berbeda nyata dengan hutan (5,712 cm/jam). Tegakan hutan dan tegakan tanaman serbaguna tidak berpengaruh nyata terhadap kerapatan isi  (bulk density), porositas tanah dan kadar air tanah.
Evaluasi Kesesuaian Lahan untuk Tanaman Kopi Arabika (Coffea arabica), Kentang (Solanum tuberosum L.) Kubis (Brassica oleraceae L.) Dan Jeruk (Citrus Sp.) Di Kecamatan Harian Kabupaten Samosir Sumina Silaban; Bintang sitorus; Posma Marbun
Jurnal Agroekoteknologi Vol 4, No 3 (2016)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (506.488 KB) | DOI: 10.32734/jaet.v4i3.13028

Abstract

Penelitian ini bertujuan untuk mengevaluasi kesesuaian lahan untuk tanaman kopi arabika, kentang, kubis dan jeruk Di Kecamatan Harian Kabupaten Samosir. Diperoleh 9 (sembilan) SPL (satuan peta lahan) yang ditentukan berdasarkan peta jenis tanah, peta kemiringan lereng dan peta ketinggian tempat yang dihasilkan dari peta topografi dengan skala 1 : 50.000, kemudian dilakukan overlay. Penilaian kelas kesesuaian lahan berdasarkan kriteria Staf Pusat Penelitian Tanah Bogor Tahun 1993 dan metode evaluasi lahan adalah metode limit berdasarkan Djaenuddin, 2011. Hasil penelitian menunjukkan bahwa kelas kesesuaian lahan potensial tertinggi pada SPL 1 adalah jeruk (S1), pada SPL 2 adalah kubis S2 (wa) dan jeruk (S2 tc), pada SPL 3 adalah jeruk (S1), pada SPL 4 adalah kopi, kentang, kubis dan jeruk (S3 wa,rc,eh), pada SPL 5 dan 6 adalah tidak sesuai (N rc)  SPL 7 adalah kopi, kentang, kubis dan jeruk (S3 wa, rc, eh), pada SPL 8 adalah jeruk (S1) dan pada SPL 9 adalah kopi, kentang, kubis dan jeruk (S3 wa, rc, eh).
Evaluasi Kesesuaian Lahan Untuk Tanaman Padi (Oryza sativa L.) Di Kecamatan Kualuh Hilir Kabupaten Labuhanbatu Utara, Sumatera Utara Siska Diannita Simanungkalit; Jamilah Jamilah; Bintang Sitorus
Jurnal Agroekoteknologi Vol 7, No 2,April (2019)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (502.874 KB) | DOI: 10.32734/jaet.v7i2,April.21919

Abstract

Tujuan penelitian ini untuk mengevaluasi dan menetapkan kelas kesesuaian lahan aktual dan potensial serta usaha perbaikan yang dapat dilakukan untuk tanaman padi (Oryza sativa L.) di Kecamatan Kualuh Hilir Kabupaten Labuhanbatu Utara, dilaksanakan pada bulan Juli 2017 sampai dengan Januari 2018. Metode penelitian berdasar kepada metode pencocokan oleh Balai Besar Litbang Sumberdaya Lahan Pertanian Bogor, 2010 terhadap tanaman  padi dan kelas kesesuaian lahan menurut Djaenuddin, et al, (2011). Pengirisian (overlay) pada peta jenis tanah, peta ketinggian tempat dan peta kemiringan lereng menghasilkan 3 (tiga) Satuan Peta Lahan (SPL). Kelas kesesuaian lahan aktual pada SPL 1 dan SPL 3 adalah sesuai marginal / S3 (nr) dengan faktor pembatas retensi hara yaitu  kejenuhan basa dan pH. Permasalahan pada faktor pembatas  tersebut dapat diperbaiki dengan penambahan bahan amelioran pada SPL 1 dan penambahan bahan organik atau pengapuran pada SPL 3 sehingga diperoleh kelas kesesuian lahan potensial pada SPL 1 dan SPL 3 adalah cukup sesuai /S2 (nr). Kelas kesesuaian lahan aktual pada SPL 2 adalah cukup sesuai/ S2 (nr) dengan faktor pembatas retensi hara yaitu kejenuhan basa dan pH. Permasalahan  pada faktor pembatas retensi hara yaitu kejenuhan basa dan pH dapat dilakukan upaya perbaikan seperti penambahan bahan organik dan pengapuran sehingga diperoleh kelas kesesuian lahan potensial padi sawah pada SPL 2 adalah sesuai (S1).
The Relationship between Climate and Productivity of Tea Plants (Camellia sinensis L.) in Bah-Butong Gardens PT. Perkebunan Nusantara IV, North Sumatra Province in 2005-2009. Siahaan, Aditya Johandry; Irsal; Sitorus, Bintang
Jurnal Online Pertanian Tropik Vol. 11 No. 2 (2024): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jopt.v11i2.17559

Abstract

Fluctuations in tea plant productivity are influenced by several climate factors, such as rainfall, number of rainy days, sunlight intensity, temperature and humidity. This research aims to evaluate the impact of climate factors on the productivity of Tea plants in the Bah-butong Plantation of PT. Perkebunan Nusantara IV, Simalungun Regency, North Sumatra. The hypothesis of this research is that rainfall, number of rainy days, sunlight intensity, temperature and humidity partially or simultaneously have a significant influence on the productivity of tea plants at the location. The research was conducted from September 2023 – Desember 2023, with data collection through field surveys and secondary data collection from related agencies. The data collected includes rainfall, number of rainy days, sunlight intensity, temperature, humidity and tea. The analysis method used is multiple linear regression and correlation analysis using statistical software SPSS.v.22 for Windows. The results of the regression analysis show that rainy days and temperature do not have a partially significant effect on increasing tea production. However, rainfall, amount of sunlight, humidity have a significant effect on increasing tea production. The results of the regression analysis show that rainfall, number of rainy days, sunlight intensity, temperature and humidity do not have a significant influence on increasing tea production.
Co-Authors Abdul Rauf Antonius Juswanto Benny Hidayat Carlos Samuel Dicky Alamsyah Pulungan Elva Rizkya Masni Gorretty Simanjuntak Hardy Guchi Ina Santa Santa Monica Br Sembiring Irsal Jamilah Jamilah Juriaman Purba Lahuddin Musa M. M. B. Damanik Mariani sembiring Marta Ritonga Maulana Azomy Pane Mukhlis, Mukhlis Nurmaya Ginting Posma Marbun Purba Marpaung Rino P. C. Purba Sarifuddin Sarifuddin Siahaan, Aditya Johandry Siska Diannita Simanungkalit Sitohang, Julpan Lynneus Sumina Silaban Supriadi Supriadi Susianti Susianti Marbun Vidiya Novelin Lubis Y Prasetiyo