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All Journal Agrikultura AGROEKOTEKNOLOGI JURNAL ILMU PERTANIAN Jurnal Penelitian Pertanian Terapan Jurnal AGROSAINS dan TEKNOLOGI SAINS TANAH - Journal of Soil Science and Agroclimatology Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian Jurnal Penelitian Kelapa Sawit Jurnal Agronomi Tanaman Tropika (JUATIKA) Jurnal Agro Estate Journal La Lifesci PERTANIAN TROPIK Jurnal Indonesia Sosial Teknologi Agrotech Journal Agroista: Jurnal Agroteknologi Agroland: Jurnal Ilmu-ilmu Pertanian Biodiversitas Journal of Biological Diversity

Mariani sembiring

Faculty Of Agriculture, Universitas Sumatera Utara. Jl. Prof. A. Sofyan No. 3, Kampus USU Padang Bulan, Medan 20155, North Sumatra, Indonesia

Author-ID : 315614

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Social Sciences

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Aplikasi Bahan Organik pada Piringan Kelapa Sawit untuk Meningkatkan Populasi Cacing Tanah dan Ketersediaan Hara P dan K Nur Ulina Warnisyah S Sebayang; T. Sabrina; Mariani Sembiring
Jurnal Agroekoteknologi Vol 4, No 1 (2016)
Publisher : Universitas Sumatera Utara

The earthworm contribute to soil fertility and environment quality but they need a suitable habitat to survive on the land including the presence of organic material as a food source. The present study was conducted in Sei Pancur Plantation, Tanjung Morawa, in March - September 2015. The design used in study was a factorial randomized block design consists two factors. The first was various types of organic materials : without organic matter (B0) ; litter (B1) ; empty fruit bunches oil palm (B2) ; litter+T.harzianum (B3) ; and empty fruit bunches oil palm+T.harzianum (B4). The second were method of application : evenly spread a layer (C1) ; stacked around turn rod (C2) ; and stacked on the edge of weeded circle (C3). The result found that application of organic materials significantly increased P-available, K-exchangeable, and earthworm. Method of applications significantly increased P-available and earthworm populations. The relationship among interaction of both significantly increased phosphate available and earthworm populations. Application on the edge of weeded circle was the best way to reduce P-available and earthworm populations. Empty fruit bunches oil palm+T.harzianum reduced K-exchangeable. Empty fruit bunches oil palm increased earthworm populations and litter+T.harzianum increased P-available.Key words : earthworm, method of applicaton, weeded circle, organic materialsThe earthworm contribute to soil fertility and environment quality but they need a suitable habitat to survive on the land including the presence of organic material as a food source. The present study was conducted in Sei Pancur Plantation, Tanjung Morawa, in March - September 2015. The design used in study was a factorial randomized block design consists two factors. The first was various types of organic materials : without organic matter (B0) ; litter (B1) ; empty fruit bunches oil palm (B2) ; litter+T.harzianum (B3) ; and empty fruit bunches oil palm+T.harzianum (B4). The second were method of application : evenly spread a layer (C1) ; stacked around turn rod (C2) ; and stacked on the edge of weeded circle (C3). The result found that application of organic materials significantly increased P-available, K-exchangeable, and earthworm. Method of applications significantly increased P-available and earthworm populations. The relationship among interaction of both significantly increased phosphate available and earthworm populations. Application on the edge of weeded circle was the best way to reduce P-available and earthworm populations. Empty fruit bunches oil palm+T.harzianum reduced K-exchangeable. Empty fruit bunches oil palm increased earthworm populations and litter+T.harzianum increased P-available.Key words : earthworm, method of applicaton, weeded circle, organic materials

Perubahan Beberapa Sifat Kimia Tanah, Serapan P dan Pertumbuhan Tanaman Jagung Pada Tanah Inceptisol Kwala Bekala Akibat Pemberian Pupuk Kandang Ayam dan Beberapa Sumber P Eko Andreas Sihite; M.M.B. Damanik; Mariani Sembiring
Jurnal Agroekoteknologi Vol 4, No 3 (2016)
Publisher : Universitas Sumatera Utara

Tanah Inceptisol memiliki kandungan bahan organik yang rendah dan pH yang rendah.Kandungan bahan organik rendah dengan ratio C/N tergolong rendah dan kandungan P potensial rendah.Penelitian ini dilaksanakan di Rumah Kasa Fakultas Pertanian Universitas Sumatera Utara, Medan.Pada bulan Agustus tahun 2015 sampai dengan selesai.Rancangan yang digunakan adalah rancangan acak kelompok (RAK) faktorial terdiri dari 2 faktor. Faktor I adalah pupuk kandang ayam dengan 4 taraf yaitu: tanpa aplikasi pupuk kandang ayam, 40 g/polibag, 80 g/polibag, dan 120 g/polibag. Faktor II adalah beberapa sumber Pyang terdiri dari: tanpa aplikasi pupuk P, pupuk SP-36, dan pupuk TSP. Hasil penelitian menunjukkan pemberian pupuk kandang ayam dapat merubah beberapa sifat kimia tanah, serapan P dan produksi tanaman jagung pada Tanah Inceptisol Kwala Bekala. Pemberian beberapa sumber P dapat merubah beberapa sifat kimia tanah, serapan P dan pertumbuhan tanaman jagung pada Tanah Inceptisol Kwala Bekala. Interaksi antara pupuk kandang ayam dan beberapa sumber P dapat merubah beberapa sifat kimia tanah, serapan P dan produksi tanaman jagung pada Tanah Inceptisol Kwala Bekala.

Perkembangan Cacing Pontoscolex corethrurus Pada Media Kultur dengan Berbagai Jenis Tekstur Tanah dan Bahan Organik Andi Andi; Tengku Sabrina; Mariani Sembiring
Jurnal Agroekoteknologi Vol 5, No 2 (2017)
Publisher : Universitas Sumatera Utara

Application of Pontoscolex corethrurus gives the positive effect to soil properties. Recently, P.corethrurus is directly collected from field which are time consuming and costly. This research aimed to determine the best organic matter and soil texture types as the artificial culture medium in supporting the P.corethrurus growth. This research was conducted in Ecological and Biological Laboratory, Agriculture Faculty, University of Sumatera Utara. This research was conducted in two phases, with using factorial randomized block design. The first factor was types of soil texture i.e. sandy loam (60% sand; 24% silt; 16% clay), Clay (28% sand; 20% silt; 52% clay), clay loam (36% sand; 28% silt; 36% clay). The second factor was types of organic matter i.e. without organic matter, cow manure, sheep manure, and hevea leaf litter. The result showed that in both phases of experiment the best soil texture types in increasing earthworm biomass and cocoon number of P.corethrurus was sandy loam, following with treatment on texture clay loam, and clay respectively. The best organic matter treatments in increasing earthworm biomass and cocoon number of P.corethrurus in phase 1 was sheep manure, cow manure, Hevea leaf litter, and without organic matter respectively. Application of sheep manure on sandy loam soil and application of sheep manure on clay soil had the same potency in increasing P.corethrurus biomass only in first phase experiment. Keywords : Culture medium, Earthworm application, Organic matter, Pontoscolex corethrurus, Soil texture

Aplikasi Mikroba Pelarut Fosfat dan Bebarapa Sumber Pupuk P Untuk Meningkatkan Serapan P dan Pertumbuhan Tanaman Jagung Pada Andisol Terdampak Erupsi Gunung Sinabung vijay sitanggang; Mariani Sembiring; fauzi fauzi
Jurnal Agroekoteknologi Vol 5, No 4 (2017)
Publisher : Universitas Sumatera Utara

Penelitian ini bertujuan untuk mengetahui pengaruh aplikasi mikroba pelarut fosfat dan berbagai sumber pupuk P serta interaksinya untuk meningkatkan ketersediaan P dan pertumbuhan tanaman jagung (Zea mays L.) pada andisol terdampak eruspsi gunung sinabung. Rancangan yang digunakan pada penelitian ini disusun dalan Rancangan Acak Kelompok Faktorial yang terdiri dari 2 faktor dengan 3 ulangan Faktor I : mikroba pelarut fosfat (M) dengan 3 taraf dosis (ml/10 kg BTKO): M0 (0), MB (Bulcholderia cepacia) (20), MF (Talaromices phinophylus) (20) dan Faktor II : sumber pupuk fosfat (P) dengan 4 jenis taraf (g/10 kg BTKO) yaitu: P0 (0), PS (3,18), PT (2,5) dan PR (4,1).Hasil penelitian menunjukkan pemberian mikroba pelarut fosfat berpengaruh nyata dalam meningkatkan pH tanah, Populasi mikroba, serapan P tanaman,dan pertumbuhan tanaman jagung. Pemberian berbagai sumber pupuk fosfat berpengaruh nyata dalam meningkatkan, serapan P tanaman, dan pertumbuhan tanaman jagung. Interaksi antara mikroba pelarut fosfat dan berbagai sumber pupuk Fosfat berpengaruh nyata dalam meningkatkan serapan P tanaman dan pertumbuhan tanaman jagung.

Klasifikasi Tanah Pada Satuan Lahan Volkan Tua di Gunung Sipiso-piso dan Gunung Simbolon Sumatera Utara Dea Walucky Saragih; Mukhlis Mukhlis; mariani br sembiring
Jurnal Agroekoteknologi Vol 5, No 4 (2017)
Publisher : Universitas Sumatera Utara

Penelitian survei bertujuan untuk mengklasifikasikan tanah pada satuan lahan volkan tua di Sumatera Utara menurut klasifikasi taksonomi tanah dan klasifikasi nasional. Penelitian dilakukan pada dua areal lahan, yaitu kaki lereng Gunung Sipiso-piso dan Gunung Simbolon. Pada masing-masing areal dibuat profil pewakil untuk diamati morfologinya kemudian diambil sampel tanah dari setiap horizon untuk dianalisis bulk densiti, tekstur tanah, C-organik, Retensi P, Al dan Fe ekstrak oksalat di Laboratorium Riset dan Teknologi, Fakultas Pertanian, Universitas Sumatera Utara. Hasil penelitian menunjukkan bahwa tanah pada satuan lahan volkan tua yang berada di kaki lereng Gunung Sipiso-piso memiliki BD > 0.9 g/cm-3, retensi P > 85%, kadar Alo +1/2 Feo > 2%, sehingga diklasifikasikan menurut taksonomi tanah (Ultic Hapludand) dan klasifikasi nasional (Andosol Distrik). Sedangkan tanah pada lahan volkan tua yang terdapat di kaki lereng Gunung Simbolon memiliki BD > 0.9 g/cm-3, retensi P < 85%, kadar Alo +1/2 Feo < 2%, sehingga diklasifikasikan berdasarkan taksonomi tanah (Andic Dystrudept) dan klasifikasi nasional (Kambisol Kromik).

Kajian Kesuburan Tanah pada Lahan Pertanian di Kecamatan Lumban Julu Kabupaten Toba Samosir Alfredo Sitorus; Bintang Sitorus; Mariani Sembiring
Jurnal Agroekoteknologi Vol 6, No 2, April (2018)
Publisher : Universitas Sumatera Utara

Penelitian ini bertujuan untuk mengetahui tingkat kesuburan tanah pada lahan pertanian di Kecamatan Lumban Julu Kabupaten Toba Samosir dengan luas + 9.090 Ha. Metode penelitian yang digunakan adalah metode purposive sampling dengan 8 Satuan Peta Lahan. Penelitian ini dimulai pada Mei 2015. Analisis P tersedia dengan metode Bray I, C-Organic dengan metode Walkley and Black, N-total dengan metode Kjeldahl, pH dengan ekstraksi H2O NH4OAc 1N pH 7, Na tukar NH4OAc 1N pH 7, Catukar NH4OAc 1N pH 7, Mg tukar NH4OAc 1N pH 7 and KTK dengan ekstraksi NH4OAc 1N pH 7. Hasil menunjukkan bahwa pH dominan pada kriteria asam, C-Organic dominan pada kriteria sangat rendah, N-total dominan pada kriteria rendah, P tersedia dominan pada kriteria rendah, K tukar dominan pada kriteria tinggi, Na tukar dominan pada kriteria rendah, Ca tukar dominan pada kriteria rendah, Mg tukar dominan pada kriteria sangat rendah - rendah, KTK dominan pada kriteria rendah - sedang.Kata Kunci :Kesuburan Tanah, Lahan Pertanian, Lumban Julu

Evaluasi Kesesuaian Lahan Tanaman Padi Sawah (Oryza sativa L.) Di Desa Sukorejo Kecamatan Sei Balai Kabupaten Batubara deyu zahraini putri; purba marpaung; mariani br sembiring
Jurnal Agroekoteknologi Vol 6, No 2, April (2018)
Publisher : Universitas Sumatera Utara

Land evaluation is estimation process of the potensial land for a variety of alternative uses optimally by considering physical and socioeconomic factors as well as conservation of environmental resources for sustainable use. This study aimed to evaluate the suitability of rice paddy (Oryza sativa L.) in Village Sukorejo Subdistric Sei Balai Distric Batubara. It can be obtained 2 (two) Land Mapping Unit (SPL) which is determined base on the overlay result from the map of topography, map of soil types and map of land use with scale of 1 : 20.000 that is Sawah Ultisol SPL 1A and 1B and Sawah Inceptisol SPL 2A and 2B. This study used survey method and the class assessment of land suitability was done by matching based on criteria astablished by Peraturan Mentri Pertanian No.79 (2013). The results showed that the land suitability classes of actual rice paddy (Oryza sativa L.) in SPL 1A, 1B and 2A is Marginally Suitable/ S3nrxs by a nutrient retention and sulfidic material barrier factor while in SPL 2B is Marginally Suitable/S3nr by a nutrient retention barrier factor. The land suitability calasses potential rice paddy (Oryza sativa L.) for l SPL (1A, 1B dan 2A) is suitable/ S2nrxs by a nutrient retention and sulfidic material barrier factor while in SPL 2B is suitable/ S2nr by a nutrient retention barrier factor. Keywords : Land suitability, Lowland rice, Rice paddy

Potential Test of Sulphate Reducing Bacteria (SRB) To Changes the Acidity of Sulphate Acid Soil and Corn Growth with Different Water Content in Green House yudi sudarno sihombing; Asmarlaili Sahar Hanafiah; Mariani Sembiring
Jurnal Agroekoteknologi Vol 6, No 3, Juli (2018)
Publisher : Universitas Sumatera Utara

This study aimed to determine the potential for a superior sulphate reducing bacteria (SRB) from tested on acid sulfate soil with different water content. The research activities carried out in the Laboratory of Soil Biology and Green House of Faculty Agriculture, University of North Sumatra. The research used Randomized Block Design with 2 treatments : SRB isolate (control, LK4, LK6, TSM4, TSM 3, AP4, AP3, LK4+TSM3, LK4+AP4, LK4+AP3, LK6+TSM3, LK6+AP4, LK6+AP3, TSM4+TSM3, TSM4+AP4, TSM4+AP3) and water condition (100% field capacity and 110% field capacity). The results shown application of isolate LK4+AP4 with water condition 110% field capacity decreased the soil sulphate content (27,38 ppm) significantly after week 6. Application of isolate LK4+AP3 with water condition 110% field capacity increase soil pH (5,58) significantly after week 6. Application of isolate LK4 with water condition 110% field capacity increase the plant growth (140 cm; 25,74 g) significantly after week 6. The best treatment was application isolate LK4 with water condition 110% field capacity (RBS population 2,5x108; soil sulphate content 29,10ppm; soil acidity 4,78; plant height 140cm; plant weight 25,74gr). Keywords : pH, Soil Sulphate Content, Sulphate Reducing Bacteria, Water Condittion.

Mapping of Soil Phospor and Potassium on Paddy Land with 200 Cropping Intensity System in Tanjung Rejo Village Percut Sei Tuan Sub District of Deli Serdang District Ade Ine Imansari; Razali Razali; Mariani Sembiring
Jurnal Agroekoteknologi Vol 6, No 3, Juli (2018)
Publisher : Universitas Sumatera Utara

This research is aimed to describe soil phosphorus and pottasium spread in 200 Cropping Intensity paddy field. Location in Tanjung Rejo village Percut Sei Tuan sub district Deli Serdang district, Laboratory of Geographic Information System Agriculture Department of Universitas Sumatera Utara, Laboratory of Soil Chemical and Indonesian Oil Palm Research Institute Laboratory. Soil sampling was done with free grid of storey level semi detail method. Parameters were soil phosphate (HCl 25%) and Soil Pottasium (HCl 25%) and questioner of paddy field. The data was analyzed with interpolation method. The result showed that soil phosphorus spread divided into two criteria’s, respectively medium and high. In the medium criteria was 0,7% of total area and for high criteria was 99,3% of total area with phosphate fertilizer recommendation is SP-36 75 kg / ha / season for medium P2O5 nutrient status and SP-36 50 kg / ha / season for high P2O5 nutrient status. While in soil pottasium spread divided into three criteria’s, the low criteria was 0,4% of total area, for medium criteria 23,7% of total area and for high criteria was 75,9% of total area. with pottasium fertilizer recommendation is KCl 50 kg / ha / season for low K2O nutrient status and no need to fertilized for medium and high K2O nutrient status. Keywords: cropping intensity, fertilization, interpolation, soil phosphorus, soil pottasium.

Evaluasi Kesesuaian Lahan Untuk Tanaman Jagung (Zea Mays L.) dan Ubi Jalar (Ipomoea batatas L.) di Kecamatan Kualuh Selatan Kabupaten Labuhanbatu Utara Aslan Pasaribu; Zulkifli Nasution; Mariani Sembiring
Jurnal Agroekoteknologi Vol 6, No 4,Okt (2018)
Publisher : Universitas Sumatera Utara

This study aims to evaluate the suitability of corn crop plant (Zea mays L.) and sweet potato (Ipomea batatas L.) in South Kualuh Subdistrict of North Labuhanbatu District. The method used in this research is survey method From the results of the overlay from the map of soil types, map of topography, and map of height place, retrieved 5 units of land use map. SPL 1 has an area of 34.95 hectares, SPL 2 has an area of 12.96 hectares, and SPL 3 has an area of 24.96 hectares, SPL 4 has an area of 159.85 hectares, and SPL 5 has an area of 73 hectares. The result at this research showed the highest potential of land suitability classes in set of land 1 is corn (S2 tc) and sweet potato (S2 tc, wa), in set of land 2 is corn (S2 tc) and sweet potato (S2 tc, wa), in set of land 3 is corn (S2 tc) and sweet potato (S2 tc , wa), in in set of land 4 is corn (S2 tc) and sweet potato (S2 tc, wa), in set of land 5 is corn (S2 tc) and sweet potato (S2 tc, wa).

Co-Authors ABDUL RAUF Abdul Rauf Abdul Rauf Abdul Rauf Ade Ine Imansari Agustini, Fenny Alfredo Sitorus Alida Lubis Amos Simanungkalit Andi Andi Andri Ikhsan Armando Septian Simbolon Armando Septian Simbolon Aslan Pasaribu Asmarlaili S. Hanafiah asmarlaili sahar hanafiah Beatrix I. L. J. Sinaga BENNY HIDAYAT BENNY HIDAYAT Benny Hidayat Benny Hidayat Bintang Bintang Sitorus Bintang Sitorus Budi Ananda Pratama Budi Ananda Pratama Cynthia Simanjuntak Damanik, Revandy Damanik, Revandy I.M Danu Syahputra Lubis Dea Walucky Saragih Deni Elfiati Deni Elfiati deyu zahraini putri Dwi Ningsih Susilowati Edi Sigit Sutarta Edi Sigit Sutarta Eko Andreas Sihite Erny Yuniarti Fauzi Fauzi Githa Noviana Guntoro Guntoro . Hardy Guchi Hendrik Dharmansyah HIDAYATULAH MUNAWAROH Imam Ramadhan Intan Safitri Jamila Jamilah Jamilah Jamilah Jul Bahori Panggabean Juli M. Hutahuruk Julpan Lynneus Sitohang Lady Sarah Lisa Mawarni Luthfi Aziz Mahmud Siregar M.M.B. Damanik Manullang, Yedija Mardiana Wahyuni Mardiana Wahyuni@gmail.com Marta Ritonga Meilissa Damayanti Lumban Gaol Muhammad Maulana Ghifari Muhammad Nazarul Yanis Muhammad Titan Hafizal Muhammad Yusuf Dibisono Mukhlis Mukhlis Mukhlis MUKHLIS MUKHLIS Mukhlis Mukhlis MUKHLIS MUKHLIS Muklis Muklis Nanda Rizky Utami Ni Komang Sri Lumbung Artha Wardani Nini Rahmawati Nofriyanto Pakolo Nofriyanto Pakolo Noviantika Nasution Novita Sari Nur Ulina Warnisyah S Sebayang, Nur Ulina Warnisyah S Okto Prandi Sihombing Posma Marbun Purba Marpaung Putra, P. A. S. Putu Oka Samirana rahmayanti rahmayanti Raja Forman Barasa Razali RAZALI RAZALI Revandy Damanik Rhiki Budianto Ricky Elmando Saragih Ridwandi Ridwandi Rino P. C. Purba Rizky Dharmawan Margolang, Rizky Dharmawan Margolang, Ropikoh Hasibuan Sakiah Sakiah Sakiah Sakiah Sarifuddin Sarifuddin Sarifuddin Sitohang, Julpan Lynneus Sitorus Sitorus Supriadi Supriadi Supriadi Susianti Susianti Marbun T Sabrina T Sabrina T. SABRINA T. SABRINA T. SABRINA T. Sabrina TENGKU SABRINA TENGKU SABRINA Tengku Sabrina Tengku Sabrina Tengku Sabrina Tioner Purba Tosuko Utomo Triani, Agus vijay sitanggang Viky Fatmala Wahyuni, Mardiana Wilda Lumban Tobing Yaya Hasanah Yedija Manullang Yopie Priest Aulia Sinaga yudi sudarno sihombing Zoel Hani Hasibuan Zulkifli Nasution Zulkifli Nasution

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