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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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Pengaruh Konsentrasi Pupuk Organik Cair Buah-Buahan dan Cara Aplikasinya Terhadap Serapan N Dan Pertumbuhan Tanaman Sawi (Brassica Juncea L.) Pada Tanah Ultisol rahmayanti rahmayanti; Jamilah Jamilah; Mariani Sembiring
Jurnal Agroekoteknologi Vol 7, No 2,April (2019)
Publisher : Universitas Sumatera Utara

This study aims to determine the effect of the concentration of liquid organic fertilizer (LOF) of fruits and its application on the N absorption and growth of mustard plant on ultisol soil. This study used a two-factor randomized group design with 3 replications. The first factor concentration of LOF with 4 levels ie P0 = 0ml LOF + 100ml water /polybag, P1 = 25ml LOF + 75ml water /polybag, P2 = 50ml LOF + 50ml water /polybag, P3 = 75ml LOF+ 25ml water /polybag, and the second factor of application of LOF with 3 levels that is B1= watered, B2= Sprayed, B3=½ watered and ½ sprayed. The results showed that giving LOF increases of soil pH by 5.78%, N absorption by 1.82 %; and number of leaves by 7.33%, wet weight by 1.47%, dry weight by 1.64%. The application method increases of soil pH by 7.05%, the number of leaves by 15.33%, and wet weight by 23.15%, dry weight by 2.39%, and N absorption by 9.87% and; The interaction of giving concentration of LOF and the application method increases of soil pH by 10.65%, and number of leaves by 37.52%, wet weight by 23.37% and dry weight by 4.86%, N absorption by 23.57 %. The best combination treatment is 75ml LOF + 25ml water and ½ watered + ½ sprayed.

Hubungan Beberapa Faktor Produksi dan Salinitas Terhadap Produktivitas Padi Sawah (Oryza sativa L.) di Desa Rugemuk, Kecamatan Pantai Labu Ropikoh Hasibuan; Supriadi Supriadi; Mariani Sembiring
Jurnal Agroekoteknologi Vol 7, No 2,April (2019)
Publisher : Universitas Sumatera Utara

ABSTRACT Rice is a plant that is classified as vulnerable to the maternity environment so that it can reduce productivity. The efficient use of production factors can increase maximum profits for rice production. This study aims to determine the impact of extensive land area, fertilizer application, pesticide on the productivity of paddy rice, to determine the limits of salinity land suitability to productivity of paddy rice. This research was conducted in Rugemuk Village, Pantai Labu District and Laboratory of Chemical and Soil Fertility, Research and Technology, Faculty of Agriculture, University of North Sumatra in July-September 2018. This study uses a purposive sampling method. The parameters measured were extensive of land area, N fertilizer, P fertilizer, K fertilizer, pesticide, salinity and productivity of lowland rice. Data were tested by regression analysis and correlation.The results showed the that : simultaneously the extensive of land area, N fertilizer, P fertilizer, K fertilizer and pesticide are positively correlated to the productivity of paddy rice, in partially salinity correlates negatively to the productivity of paddy rice. Limit the suitability of land for salinity rice between the classes in suitable with unsuitable is 3.74 dS/m. Keywords: lowland rice, factors of production, salinity, land suitability, productivity

INTERAKSI PERLAKUAN MIKORIZA DAN INOKULUM Rhizobium sp TERHADAP PERTUMBUHAN DAN PEMBENTUKAN BINTIL AKAR Mucuna bracteata Mardiana Wahyuni; Ricky Elmando Saragih; Mariani Sembiring
Jurnal Penelitian Pertanian Terapan Vol 20 No 2 (2020)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v20i2.1408

The purpose of this study was to determine the effect of mycorrhizal treatment and inoculation of Rhizobium sp on the growth and formation of Mucuna bracteata root nodules. The study was conducted in the STIPAP Medan experimental garden. The study was conducted in April - July 2019. The study used 2 factorial randomized block design (RBD) methods consisting of 3 and 3 treatments with 4 replications, so that the total sample was 36 seedlings. Parameters observed were length of tendrils, number of leaves, number of root nodules, dry weight of root nodules, chlorophyll content, leaf N content and the degree of root infection. The data obtained were statistically analyzed by analysis of variance (ANOVA) with the test 5% significant difference. The results showed that the best single treatment of Mikoriza in this study was M2 with a dose of 40 g/seed, which affected in length of tendrils. Rhizobium sp application significantly affected the length of tendrils, number of leaves, number of nodules at the best single treatment is R2 with a dose of 0.6 ml/seed. Interaction of mycorrhizal and Rhizobium sp treatment showed a significant effect on M2R2 treatment, namely mycorrhizal application with a dose of 40 g/seed and Rhizobium sp application with a dose of 0.6 ml/seed had the best growth for several observational parameters.

PENGARUH SUHU DAN KELEMBABAN TERHADAP POPULASI ARTHROPODA PADA LAHAN APLIKASI DAN TANPA APLIKASI LIMBAH CAIR PABRIK KELAPA SAWIT Sakiah Sakiah; Mariani Sembiring
Jurnal Agro Estate Vol 2 No 1 (2018): Juni 2018
Publisher : Institut Teknologi Sawit Indonesia

Arthropods play a role in the decomposition process of organic matter. The existence of arthropods in soil is aﬀected by environment. This research is aiming to find out the temperature of humidity and population of arthropods in a diﬀerence distance from the plate and ditch of application towards application field and without application of palm oil mill eﬄuent (POME). The research is done in Bukit Maradja Estate, PT. SIPEF in April to August 2017. The research design is used random design of factorial group, the fist factor is the sampling area, the second factor is the distance from the plate to the application ditch. The parameter testing arranged on the list of variance and Least Significance Diﬀerence (LSD) test, with 5% value. The research result showed temperature and population of arthropods is no diﬀerent between application area and without application area (POME), while soil humidity showed significance diﬀerence between application area and without application area (POME). Temperature, humidity and population of arthropods has no significance diﬀerence in sampling area 0cm, 100cm, 200cm, 300cm and 400cm from plate edge and POME application ditch. The number of arthropods is aﬀected by temperature and soil humidity. In application area of POME was found 5 classes of arthropods and 34 species. Population of arthropods in POME application area is 261 individuals and without POME application is 146 individual.

PENGARUH KACANGAN PENUTUP TANAH Mucuna bracteata TERHADAP BEBERAPA SIFAT FISIK DAN KIMIA TANAH ULTISOL PADA PERKEBUNAN KARET (Hevea brasiliensis) Sakiah Sakiah; Mariani Sembiring; Tosuko Utomo
Jurnal Agro Estate Vol 2 No 1 (2018): Juni 2018
Publisher : Institut Teknologi Sawit Indonesia

The objective of this research is to find out the influence of Mucuna bracteata as cover crop on some physical and chemical properties of ultisol at rubber plantation area with immature plant period on flat and slope ultisol area. The research was conducted at Bandar Pinang Estate, PT. Tolan Tiga Indonesia (SIPEF Group), Desa Bandar Pinang, Bintang Bayu Sub-district, Serdang Bedagai District, Sumatera Utara Province from May to August 2016. Soil sampling is distinguished by plant age, topography and the presence of cover crop (Mucuna bracteata). The soil is taken composite by the zigzag method. From each point is taken as much as 1 Kg of soil using a soil drill at a depth of 0-20 cm then mixed well and used as much as 5 Kg. Data processing is done descriptively. The observation parameters were soil texture, bulk density, infiltration, organic matter content, nitrogen content and soil pH. Mucuna bracteata planting was influencing on some physical and chemical properties of ultisol in rubber plantation. The role of Mucuna bracteata to physical properties of ultisol is to fix bulk density in flat area as 9.22% and on slope area as 2.19%. The average infiltration class goes into the quick criteria and the soil texture is sandy loam soil. The role of Mucuna bracteata to chemical properties of ultisol is to increase soil organic matter in flat area as 44.96% and on slope area as 59.15%, increase the soil nitrogen level in the flat area as 57.14% and in the slope area as 91.67%, there was no significant diﬀerence between pH in both flat and slope areas.

KARAKTERISTIK FISIK DAN KIMIA TANAH PERKEBUNAN KELAPA SAWIT {Elaeis guineensis Jacq) DENGAN PENUTUP TANAH Mucuna bracteata Sakiah Sakiah; Mariani Sembiring; Novita Sari
Jurnal Agro Estate Vol 1 No 1 (2017): Juni 2017
Publisher : Institut Teknologi Sawit Indonesia

Optimal nutrient delivery is one way to increase palm oilproduction. This is because the need ofnutrients for palm oil is quite high, while the soil capacity in providing nutrients for plants is limited. Besides fertilization, nutrients can be given in the form o forganic materials added or grown as cover crop. Beans as a cover crop is a vine that can increase nutrients and improve soil quality. Ofthe many types o fbeans as a cover crop, Mucuna bracteata is the most widely used species, because it has several advantages, namely rapid growth, high biomass production, resistant to shade, resistant to drought, suppress the growth ofweeds, and not liked by livestock. Mucuna bracteata also has benefitsforpalm oil crops such as increasing soil fertility, protecting against erosion hazards, improving soil properties and shortening seedling periods. This research was conducted to obtain informative data about the physical and chemical properties o fsoil on slope andflat areas planted with Mucuna bracteata as a cover crop and without Mucuna bracteata. This research was conducted at Afdeeling IKebun Bangun Bandar Socfindo Inc, Tanjung Maria Village, Dolok Masihul Sub-District, Serdang Bedagai District, Sumatera Utara Province. The research was conducted from May to July 2016. This research was conducted by descriptive analysis method that is collecting direct data infield and testing o fsoil samples in laboratory. Soil samples were taken based on: Topography (flat and slopes 15-30%), cover crops (without Mucuna bracteata and with Mucuna bracteata) and plant life (seedling periods 1, 2 and 3). The soil sample is taken composite by zigzagging soil sampling method. The research results showed that the planting of Mucuna bracteata in palm oil plantations was able to improve some physical and chemical properties of the soil; Planting Mucuna bracteata onflat area can fix bulk density o f 12.64%, on slope area o f 6.04%. The color o fthe soil that is planted with Mucuna bracteata tends to be darker than those not planted. The infiltration rate belongs to the class 'very quickly'with a sandy clay-dominated ground texture; Planting o fMucuna bracteata onflat area can increase soil organic matter content by 42.74%, while on slope area o f15.11%, increase ofN-total soil level by 31% and on slope area does not increase N-total.

UJI ANTAGONISME BEBERAPA Trichoderma sp TERHADAP PENYAKIT BUSUK PANGKAL BATANG (Ganoderma boninense) PADA MEDIA PADAT DI LABORATORIUM Mariani Sembiring; Muhammad Yusuf Dibisono; Hendrik Dharmansyah
Jurnal Agro Estate Vol 1 No 1 (2017): Juni 2017
Publisher : Institut Teknologi Sawit Indonesia

Ganoderma boninense is afungus that causes the disease rotting the roots (basal stem rot). Infection and disease transmission generally occurs through the contact ofthe root or the base ofthe stem with a source inokulum in the ground. Ganoderma boninense can cause death in plant oil palm. Trichoderma sp saprofik is a fungus that lives in the soil, litter, dead wood, and living in various places. Easy to find, quickly, and which were capable o f killing other fungi. Based on this research done antagonism Trichoderma sp Ganoderma boninense against media PDAS.This research was carried out in the laboratory ofSoil Biology Faculty ofAgriculture University ofNorth Sumatra. This research was carried out on 15 June-6 July 2016. This study used a Randomized Complete Design method (RAL) non Factorial treatment 2 and 11 replicates. Testing conducted the smallest Real Difference test (BNT) and the 5% level. The research results showed that T4 Treatment (g. boninense + 1. harzianum) produces the best drag power against pathogen growth o f g. boninense with percentage o f barriers of 344.53% showed that treatment oft. harzianum was able to inhibit the growth ofg. boninense process occurs through inhibition ofantagonistic mechanism ofthe inhibitory zones are characterized by thepresence.

ISOLASI DAN UJI POTENSI BAKTERI PELARUT FOSFAT DARI LAHAN PERKEBUNAN KELAPA SAWIT (Elaeis guineensis Jacq.) Mariani Sembiring; Imam Ramadhan; Tioner Purba
Jurnal Agro Estate Vol 4 No 1 (2020): Juni 2020
Publisher : Institut Teknologi Sawit Indonesia

Phosphate solubilizing bacteria has high potential in dissolving P bound into P available in the soil, the mechanism of dissolving P related to the activity of the microbes concerned in producing enzymes and organic acids. This research aims were to determine the type and ability of bacteria that can dissolve P. This research was conducted at the Soil Biology Laboratory, Faculty of Agriculture, University of Sumatera Utara (USU) in January-June 2019. The observed parameters were the population of phosphate solubilizing microorganisms, potential test on solid media from several P sources, analysis of organic acids using the High-Performance Liquid Chromatography (HPLC) method, identification of bacteria by Polymerase Chain Reaction Sequences (PCR-Sequence). The analysis results indicated that the microbes which had the highest ability to dissolve P and produce organic acids were isolates with B1 code and the results of PCR-Sequence identification of B1 isolates were Burkholderia sp strain IBP-VNS5.

EVALUASI KEMAMPUAN LAHAN MARGINAL DESA SIHIONG BONATUA LUNASI TOBASA UNTUK TANAMAN ANGGUR (Vitis vinifera L.) DAN JAMBU BIJI (Psidium guajava L.) Bintang; Supriadi; Mariani sembiring
Jurnal Pertanian Tropik Vol. 2 No. 2 (2015): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Penelitian bertujuan untuk mengetahui kemampuan lahan marjinal di Desa Sihiong Kecamatan Bonatua Lunasi Kabupaten Tobasa mendukung tanaman anggur (Vitis vinifera L.) dan jambu biji (Psidium guajava L.), dimulai tahun 2012-2014 menggunakan metoda survey, dengan dua tahapan yakni mengklasifikasikan kemampuan lahan di Sihiong dan mengevaluasi kesesuaian lahan terhadap tanaman anggur dan jambu biji. Data primer dari lapangan adalah kemiringan lereng, erosi, solum, drainase, singkapan batuan dan bahaya banjir/genangan. Analisis properti tanah (tekstur, permeabiltas, bulk density, salinitas, bahan organik, pH, Kapasitas Tukar Kation, Kejenuhan Basa) dilakukan di laboratorium Riset dan Teknologi Fakultas Pertanian USU Medan. Hasil penelitian menunjukkan bahwa lahan daerah Sihiong termasuk kelas III dengan kemampuan lahan aktual kelas III(es). Upaya perbaikan dapat dilakukan untuk mengatasi erosi dengan membuat teras di lahan sedangkan tekstur tanah Lempung Berpasir (t4) tidak dapat dirubah. Dengan adanya perbaikan maka kemampuan lahan potensial Sihiong menjadi kelas III(s). Kemampuan lahan di Desa Sihiong dapat mendukung tanaman Tanaman Anggur (Vitis vinifera L.) pada kesesuaian lahan aktual terendah S3 (eh) dan upaya perbaikan akan meningkatkan kelas potensial menjadi S2 (tc,wa) dengan faktor pembatas tc,wa (temperatur dan ketersediaan air/lama masa kering) tidakdapat/sulit diperbaiki. Kesesuaian untuk tanaman jambu biji (Psidium guajava L.) berada pada kelas S3 (nr,eh) dengan faktor pembatas retensi hara dan bahaya erosi. Alternatif perbaikan dengan pemberian bahan organik yang diperkaya mineral basa dapat meningkatkan kelas kesesuaian lahan potensial menjadi S2 (tc) dengan faktor pembatas tc (temperatur) yang sulit diperbaiki.

PENINGKATAN KETERSEDIAAN FOSFAT DAN PRODUKSI TANAMAN KENTANG (Solanum tuberosum L) DENGAN MENGGUNAKAN Talaromyces pinophilus INDIGENOUS DAN PUPUK SP36 PADA ANDISOL TERDAMPAK ERUPSI GUNUNG SINABUNG Mariani Sembiring; Deni Elfiati; Edi Sigit Sutarta
Jurnal Pertanian Tropik Vol. 2 No. 3 (2015): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Penelitian ini bertujuan untuk mengetahui pengaruh Jamur pelarut Fosfat, Dosis Pupuk P dan kombinasi jamur Pelarut Fosfat dan Dosis Pupuk P terhadap Pertumbuhan, P-tersedia dan produksi tanaman kentang (Solanum tuberosum L) pada Andisol terdampak erupsi Sinabung. Parameter yang diamati: Berat kering tanaman diukur pada akhir masa vegetatif, Produksi tanaman, Serapan P tanaman dan Analisa P tersedia tanah,dengan metode Bray II diukur pada akhir masa vegetatif. Hasil penelitian menunjukkan bahwa Kombinasi perlakuan Jamur pelarut fosfat (T. pinophilus )dan SP36 berpengaruh terhadap peningkatan P-tersedia pada perlakuan J1P2 yaitu sebesar 71.65% bila dibanding dengan kontrol walaupun secara statistik tidak berpengaruh nyata. Pada parameter serapan P tanaman aplikasi perlakuan T. pinophilus dan SP36 berpengaruh nyata dalam peningkatan serapan P tanaman, perlakuan yang terbaik adalah T3P2 tetapi menurun dengan peningkatan dosis SP36 (P3=13g). Berat kering tanaman perlakuan T3P2 yang terbaik dan menurun dengan meningkatnya dosis SP36 (13 g). Peningkatan produksi tanaman kentang yang tertinggi yaitu J2P1 dengan produksi sebesar 1017.5g sedangkan tanaman kontrol 610 g.Peningkatan produksi tanaman kentang yaitu sebesar 66.8% lebih tinggi bila dibanding dengan kontrol. Aplikasi T. pinophilus sebanyak 20 mL dan 6.5g SP36 memiliki produksi yang terbaik, produksi menurun dengan peningkatan dosis T. pinophilus dan pupuk SP36.

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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