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All Journal JTSL (Jurnal Tanah dan Sumberdaya Lahan) Jurnal Agronomi Tanaman Tropika (JUATIKA) AGROVITAL : Jurnal Ilmu Pertanian Jurnal Agrotek Lestari Jurnal Agroplasma AGRINULA: Jurnal Agroteknologi dan Perkebunan International Journal Of Science, Technology & Management (IJSTM) Jurnal Visi Pengabdian Kepada Masyarakat Jurnal Pengabdian Masyarakat Tjut Nyak Dhien PERTANIAN TROPIK Contributions of Central Research Institute for Agriculture All Fields of Science Journal Liaison Academia and Sosiety Journal Liaison Academia and Society

Roswita Oesman

Program Studi Agroteknologi Fakultas Pertanian Universitas Pembinaan Masyarakat Indonesia

Author-ID : 1046245

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Supply Liquid Organic Fertilizer NASA and Rice Husk Ash To The Chemical Properties Of The Soil On The Tomato Plant Fitra Syawal Harahap; Rahmaniah; Roswita, Oesman; Iman, Arman
International Journal of Science, Technology & Management Vol. 1 No. 3 (2020): September 2020
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v1i3.42

Efforts to improve tomato production can be done with the use of organic fertilizers derived from agricultural waste, manure, green manure, manure-human waste, and compost as a substitute source of nutrients. This study aims To determine the best combination between provision of organic fertilizer POC and Rice Husk Ash On the Chemical Properties of the Soil On the Tomato Plant. This research used randomized block design factorial consisting of 2 treatment factors, namely : the Concentration of POC NASA (N) consists of 4 levels, namely: N0 = 0% ( control), N1 = 1 cc/ liter of water, N2 = 2 cc/ liter of water, N3 = 3 cc/ liters of water. Organic fertilizer Rice Husk Ash (A) which consists of 3 levels, namely :A0 = 0 tons/ ha, A1 = 15 tons/ha (158 g/polybag), A2 = 30 ton/ha (316 g/polybag). The test map used is the Duncan Multiple Range Test (DMRT). As for the observed parameters, namely soil chemical properties include soil pH Methods Elektrometri, C-organic (%) Method of Walkley and Black, P-Available (%) Method of Bray II. The results showed that the Provision of Liquid Organic Fertilizer NASA and as much as 2 cc/ liter of water is able to increase the soil pH and C-organic. Provision of 30 ton/ha or equivalent to 316 g/polybag Rice Husk Ash is able to increase P-available and C-organic.

Chemical Characteristics of Inceptisol Soil With Urea and Goat Manure Fertilizer Fitra Syawal Harahap; Roswita Oesman; Wizni Fadhillah; Mulya Rafika
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol 3 No 2 (2021): Volume 3 No.2 July 2021
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v3i2.1398

The application of organic fertilizers can improve soil fertility specifically on Inceptisol soils which are quite extensive but have problems with relatively low nitrogen nutrients so that the effort to overcome this is through the addition of organic matter into the soil through organic fertilization or with inorganic fertilizers. The purpose of this study was to determine the effect of the application of goat and urea fertilizer on the chemical properties of inceptisols from Rantau Selatan. This research was carried out at the Agrotechnology Practice Field, Faculty of Science and Technology, Labuhanbatu Rantau Prapat University from February to May 2021. This study used a factorial Randomized Block Design (RAK) with 2 factors, namely factor 1 urea with 4 levels, namely: U0 = 100 kg urea /ha (0 g urea/5 kg weight of oven-dry soil or BTKO), U1= 100 kg urea/ha (0.25 g urea/5 kg BTKO), U2= 200 kg urea/ha (0.50 g urea/ha) 5 kg BTKO), U3 = 300 kg urea/ha (0.75 g urea/5 kg BTKO) and factor 2, the factor of giving goat manure with 3 levels, namely: K0 = 0 tons N/ha (0 goat manure/ 5 kg of oven-dry soil weight), K1 = 10 tons N/ha (25 g Fertilizer, Goat Cage/5 kg BTKO), K2 = 20 tons N/ha (50 g Fertilizer, Goat Cage/5 kg BTKO), K3 = 30 tons N/ha (75 g Fertilizer, Goat Cage/5 kg BTKO). The results of the research application of goat manure increased the N-total dose of Urea: 0.25g and goat manure: 75g on Inceptisol soil while the interaction of urea and goat manure application increased the total N-total with Urea dose: 0.25g and goat manure: 75g) South Coast Inceptisol soil

Penentuan Bulk Density Ultisol Di Lahan Praktek Terbuka Universitas Labuhanbatu Fitra Syawal Harahap; Roswita Oesman; Wizni Fadhillah; Ade Parlaungan Nasution
AGROVITAL : Jurnal Ilmu Pertanian Vol 6, No 2 (2021): Agrovital Volume 6, Nomor 2, November 2021
Publisher : Universitas Al Asyariah Mandar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35329/agrovital.v6i2.1913

Bulk density merupakan berat suatu massa tanah per satuan volume tertentu. Volume tanah adalah volume kepadatan tanah termasuk pori-pori tanah. Tanah yang lebih padat mempunyai bulk density yang lebih besar dari tanah yang sama tetapi kurang padat. pada umumnya tanah lapisan atas pada tanah mineral mempunyai nilai bulk density yang lebih rendah dibandingkan dengan tanah dibawahnya. Tujuan penelitian ini adalah Bulk density adalah untuk mengetahui berat jenis atau Bulk density pada lahan terbuka di lahan praktek dikarenakan sering dilakukan pengolahan tanah oleh mahasiswa Universitas Labuhanbatu Penelitian ini dilaksanakan di Lahan Praktek Universitas Labuhanbatu Rantauprapat, Kabupaten Labuhanbatu dengan ketinggian kurang lebih 18 meter diatas permukaan laut, Analisa tanah dilakukan di laboratorium ilmu terpadu fakultas sains dan teknologi Universitas Labuhanbatu. Penelitian ini dilaksanakan pada bulan Januari 2021 sampai April 2021. Hasil pengamatan yang diperoleh menunjukkan nilai bulk density untuk tanah yang diamati sebesar 1,060 gram/cm3 sehingga Ketersediaan bahan organik juga berpengaruh hal ini disebabkan karena semakin banyak bahan organic yang terkandung dalam tanah maka semakin tinggi kepadatan tanah.

Respon Pemberian Pupuk Organik Cair dan Pupuk NPK Terhadap Pertumbuhan Vegetatif Tanaman Jagung (Zea mays L.) Roswita Oesman; Rahmaniah Rahmaniah
Jurnal Agrotek Lestari Vol 8, No 1 (2022): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jal.v8i1.5200

Kebutuhan jagung di Indonesia saat ini cukup besar oleh karena konsumsi jagung terbesar untuk pangan dan industri pakan ternak. Secara garis besar jagung dikelompokkan sebagai bahan pangan, bahan pakan ternak dan bahan baku industri. Penelitian ini bertujuan untuk mengetahui respon pemberian pupuk organik cair dan pupuk NPK terhadap pertumbuhan vegetatif tanaman jagung (Zea Mays L). Metode penelitian ini menggunakan Rancangan Acak Kelompok (RAK) terdiri dari dua faktor. Faktor pertama adalah Pemberian pupuk Organik Cair (N) dengan 3 taraf perlakuan yaitu : N0= 0 ml/liter air (tanpa pupuk Organik Cair), N1= 1 ml/liter air pupuk Organik Cair, N2= 2 ml/liter air pupuk Organik Cair. Faktor Kedua adalah pemberian pupuk NPK (P) dengan 3 taraf perlakuan yaitu : P0= tanpa pupuk NPK, P1= 1g/tanaman pupuk NPK dan P2= 2 g/tanaman pupuk NPK. Hasil penelitian ini menunjukkan bahwa pemberian pupuk organik cair tidak berpengaruh nyata pada tinggi tanaman umur 2 (mst) dan 6 (mst) tetapi berpengaruh nyata pada umur 4 mst. Berpengaruh tidak nyata terhadap jumlah helai daun pada umur 2 (mst), 4 (mst) dan 6 (mst). Berpengaruh tidak nyata terhadap diameter batang (mm) pada umur 2 (mst), 4 (mst), 6 (mst). Pemberian pupuk NPK berpengaruh nyata terhadap tinggi tanaman pada umur 2 (mst), 4 (mst) tetapi tidak berpengaruh nyata untuk umur 6 (mst). Jumlah daun (helai) tidak berpengaruh nyata 2 (mst), 4 (mst), 6 (mst). Diameter batang (mm) berpengaruh nyata pada umur 2 (mst), 6 (mst) dan tidak berpengaruh nyata pada umur 4 (mst). Kata Kunci : Jagung, Organik Cair, NPK

Response of Growth and Production of Corn (Zea Mays L) with Liquid Fertilizer in Labuhan Batu Regency Fitra Syawal Harahap Harahap; Hilwa Walida; Dahrul Aman Harahap; Roswita Oesman; Wizni Fadhillah
Jurnal Pertanian Tropik Vol. 6 No. 3 (2019): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Growth and Production of Corn Plants (Zea mays L) with Provision of liquid supplementary fertilizer(PPC) is an alternative fertilizer that can increase plant growth and production. The constituents of thenutrients can provide elements that are not present in the soil. This study aims to get the right dose forgrowth and production of corn (Zea mays L). The treatment consists of 7 levels O0 = N, P, KRecommended dosage (Urea = 5 g / array; TSP = 2.50 g / KCl array = 1.87 g / array) O1 = Standardorganic compost / fertilizer (gr / plot) ) + N, P, K (Urea = 5 g / bolt; TSP = 2.50 g / bolt; KCl = 1.87 g/ bolt) O2 = 0.75 ml Primatan + N, P, K (Urea = 5 g / run; TSP = 2.50 g / run; KCl = 1.87 g / run) P3= 1.12 ml Primate + N, P, K (Urea = 5 g / run; TSP = 2.50 g / extract; KCl = 1.87 g / extract) O4 =1.5 ml Primatan + N, P, K (Urea = 5 g / extract; TSP = 2.50 g / extract; KCl = 1.87 g / array) O5 =1.5 ml Primatan + 0.75 N, P, K (urea = 3.75 g / run; TSP = 1.87 g / run; KCl = 0.14 g / run) O6 = 1.5ml primatan + 0.50 N, P, K (urea = 2.50 g / bolt; TSP = 1.25 g / bolt; KCl = 0.93 g / bolt). TreatmentP2 = 0.75 ml Primatan + N, P, K (Urea = 5 g / line; TSP = 2.50 g / line; KCl = 1.87 g / line) is able togive the best results for all parameters, namely plant height amounting to 44.09 cm, leaf area 241.19mm3, biomass weight per plant sample 271.50 g, selling fresh weight 225.50 g, total chlorophyll30.93units / 6 mm3.

PENGARUH PUPUK KANDANG AYAM DAN KCL TERHADAP PERTUMBUHAN DAN PRODUKSI JAGUNG (Zea mays L) Roswita Oesman; Rahmaniah .
Agrinula : Jurnal Agroteknologi dan Perkebunan Vol 5 No 2 (2022): Agrinula : Jurnal Agroteknologi dan Perkebunan
Publisher : Prodi. Agroteknologi dan Perkebunan, Universitas Tjut Nyak Dhien

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36490/agri.v5i2.427

Penelitian ini bertujuan untuk mengetahui Pengaruh Pupuk Kandang Ayam dan KCL terhadap pertumbuhan dan hasil produksi Jagung (Zea mays L). Penelitian ini dilaksanakan pada bulan Januari – Maret 2022 di Desa Marindal II Kecamatan Patumbak Kabupaten Deli Serdang Sumatera Utara. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) faktorial terdiri dari dua faktor yaitu faktor pertama adalah pupuk kandang ayam (K) 3 taraf yaitu K0 = 0 kg/plot (kontrol), K1 = 1 kg/plot, K2 = 2 kg/plot dan faktor ke dua pupuk KCL dengan 3 taraf yaitu C0 = 0 kg/plot (kontrol), C1 = 50 kg/plot, C2 = 75 kg/plot. Parameter yang diukur tinggi tanaman, jumlah daun (helai), diameter batang (mm) dan jumlah tongkol persampel (buah). Hasil penelitian menunjukkan bahwa pengaruh pupuk kandang ayam berpengaruh nyata terhadap jumlah tongkol persampel (buah) dan diameter batang umur 6 mst (mm).

PENGARUH PEMBERIAN PUPUK ORGANIK DAN PUPUK ANORGANIK TERHADAP SERAPAN N, P, K OLEH TANAMAN JAGUNG PADA ULTISOL TAMBUNAN LANGKAT Roswita Oesman; Fitra Syawal Harahap; Abdul Rauf; Rahmaniah Rahmaniah
Jurnal Tanah dan Sumberdaya Lahan Vol. 7 No. 2 (2020)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Maize is a cereal commodity that has an important role in supporting food security and food diversification programs. The application of organic and inorganic fertilizers is one of the efforts to increase national maize productivity. This study was aimed to explore the effect of the application of organic and inorganic fertilizers on N, P and K uptake by maize in an Ultisol. Treatments tested were combinations of five levels of organic fertilizer application (0%, 100%, 75%, 50%, and 25% of recommended organic fertilizer dose), and five levels of inorganic fertilizer (0%, 100%, 75%, 50%, and 25% of recommended inorganic fertilizer dose). The twenty-five treatments were arranged in a factorial randomized block design with two replications. Results of the study showed that there was a relationship between N, P and K uptake by maize with maize shoot dry weight, root weight, and shell weight. The highest plant height, shoot dry weight, and root dry weight of the maize were obtained by the treatment of 100% of organic fertilizer. The highest maize shell dry weight and uptake of N, P was obtained by the in the treatment of 75% organic fertilizer.

Pembuatan Kompos Dari Sampah Rumah Tangga dan Sampah Kota Rahmaniah; Oesman, Roswita; Sibuea, Nunti; Siti Aisyah; Sinta Diana
Jurnal Visi Pengabdian Kepada Masyarakat Vol. 5 No. 1 (2024): Jurnal Visi Pengabdian Kepada Masyarakat : Edisi Februari 2024
Publisher : LPPM Universitas HKBP Nommensen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51622/pengabdian.v5i1.2027

Kompos adalah produk mikrobia yang mengubah bahan organik dan menghasilkan kompos dengan nisbah C/N yang rendah. Mengaktifkan kegiatan mikrobia untuk mempercepat proses dekomposisi bahan organik dikenal sebagai pengomposan. Di sana ada bakteri, jamur, dan jasad renik lainnya. Bahan baku kompos ini terdiri dari jerami, sampah kota, limbah pertanian, kotoran hewan dan ternak, serta sampah rumah tangga. Kompos membantu memperbaiki struktur tanah dan menyediakan zat makanan yang diperlukan tumbuhan. Dengan banyaknya bahan baku, terutama sampah perkotaan, dan teknologi pengomposan yang tepat, kompos adalah alternatif pengolahan limbah padat organik yang dapat digunakan di Indonesia. Proses pengomposan akan menghasilkan panas karena aktivitas mikroba, yang terkait erat dengan kelengasan. Kelembaban yang cukup, baik basah maupun kering, sangat memengaruhi aktivitas dan kehidupan mikrobia. Aerasi timbunan terkait erat dengan kelengasan. Bakteri yang terlalu anaerob mati atau terhambat pertumbuhannya karena aerasi. Disarankan agar temperatur tidak terlalu tinggi (60oC). Sebagian besar, proses pengomposan menghasilkan asam-asam organik, yang mengakibatkan penurunan pH, efek netralisasi kemasaman, dan neutralisasi kemasaman, yang sering dilakukan dengan membuat bahan pengapuran. Studi tentang limbah dari manajemen limbah di pusat pengelolaan limbah dan tempat penghapusan limbah dapat membantu mengurangi limbah ekonomi dan menyediakan sumber daya yang diperlukan untuk pengurusan limbah, dengan demikian mempromosikan kesehatan masyarakat dan lingkungan.

Pengaruh Pemberian Pupuk Organik Cair VIT-O Dan Media Tanam Terhadap Pertumbuhan Tanaman Cabai Rawit (Capsicum frutescens L.) Waruwu, Derianus; Zulfida, Ida; Oesman, Roswita
JURNAL AGROPLASMA Vol 10, No 2 (2023): JURNAL AGROPLASMA VOLUME 10 NO 2 TAHUN 2023
Publisher : UNIVERSITAS LABUHANBATU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/agroplasma.v10i2.4955

Chili is a seasonal fruit plant. It is very popular because of its spicy taste and has been a spice component in every dish for a long time. Almost every native Indonesian dish uses chilies. Furthermore, in 2019, cayenne pepper production was 49,246 tons. Furthermore, in 2020, cayenne pepper production will reach 61,160 tons. Furthermore, in 2021, production will reach 78,663 tons (BPS, 2022). Liquid organic fertilizer (POC) is a type of fertilizer made from organic materials. Organic fertilizer is the result of the decomposition of organic materials that are broken down (renovated) by microbes, the final result of which can provide the nutrients needed by plants for plant growth and development. Apart from using liquid organic fertilizer, the composition of soil media also plays an important role in increasing the growth of cayenne pepper plants. Planting media play an important role in supporting plant growth and providing a supply of nutrients for plants. This research used a randomized block factororial design that consisted of two factors, namely Factor 1. Various types of Vit-O liquid organic fertilizer concentrations consisting of 3 treatment levels, namely P0 = control (Vit-O liquid organic fertilizer), P1 = 100 ml liquid organic fertilizer Vit-O, and P2 = 200 ml liquid organic fertilizer Vit-O. Factor 2. Planting Media Composition M1 = 25% cowshed compost + 25% husk charcoal + 50% soil; M2 = 50% cowshed compost + 25% husk charcoal + 25% soil; M3 = 25% cowshed compost + 50% husk charcoal + 25% soil. Based on the research results, it can be concluded that: the single effect of giving Vit-O organic fertilizer is significantly different on plant height at the ages of 14 dap, 28 dap, and 35 dap, but is not significantly different at the ages of 21 dap, 42 dap, and 49 dap, and number of leaves at 14 days after; The single effect of differences in the composition of the planting media was significantly different on plant height at 14 dap, 28 dap, and 35 dap, and number of leaves at 14 dap and 21 dap, but was not significantly different on plant height at 21 dap, 42 dap, and 49 dap, and number of leaves at 28 days after planting, 35 days after planting, 42 days after planting, and 49 days after planting. The interaction effect of providing Vit-O organic fertilizer was significantly different on the production of sample plants in harvest I, but not significantly different in harvest II and harvest III, plant height, and number of leaves.

Increasing Samosir Red Onion (Allium ascalonicum L.) Production Through Induction of Ethyl Methane Sulfonate (EMS) Mutation and Administration Interval of Silver Nanoparticles Natural PGR (AGNPS-A) Waruwu, Marinus Mintodeus; Saragih, Wismaroh Sanniwati; Oesman, Roswita
Contributions of Central Research Institute for Agriculture Vol. 18 No. 1 (2024): January: Agriculture
Publisher : Central Research Institute For Agriculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59651/cceria.v18i1.118

Samosir Shallots (Allium ascalonicum L.) is one of the vegetable commodities that is widely used by people as a food flavoring ingredient. Apart from being a flavoring, shallots are also widely used as traditional medicine. The importance of applying Ethyl Methane Sulfonate (EMS) mutation technology and providing natural ZPT silver nanoparticles (AGNPS-A) on the growth and productivity of Samosir shallots. This research was carried out from May to August 2023, which took place in the experimental garden of the Faculty of Agriculture, Indonesian Community Development University (UPMI) Jl. Balai Desa Pasar 12 Marindal II Medan Amplas. This research used a Completely Randomized Design (CRD)which consists of 3 factors with levels of 3x3x2. First factor, AGNPS-A administration interval (A), A0 (Control); A1 (3 MST); A2 (5 MST). Second factor, Ethyl Methane Sulfonate (E),E0 (Control); E1 (0.25%); E2 (0.5%); Factor (iii), Soaking time (J), J1 (2 hours); J2 (4 Hours). The results of EMS and AGNPS-A treatment had a very real influence in increasing onion production on the observation parameters of plant height, number of leaves, number of tillers and wet weight. This combination of treatments is able to interact to increase the production of Samosir shallots(Allium ascalonicum L.).

Co-Authors Abdul Rauf Abdul Rauf Ade Parlaungan Nasution, Ade Parlaungan Afriani, Astri Alinur, Alinur Arisandi, Nadila Dahrul Aman Harahap Deni Elfiati Fitra Syawal Harahap Fitra Syawal Harahap Fitra Syawal Harahap Fitra Syawal Harahap Fitra Syawal Harahap Harahap Gulo, Ali Momon Hilwa Walida Hilwa Walida Hiya, Nirmadarningsih Ida Zulfida, Ida Iman, Arman Laia, Desmawati Lutfi Henderlan Harahap Mahuli, Jenda Ingan Mulya Rafika Padang, Lulu Aprianti Rahmaniah Rahmaniah . Rahmaniah Rahmaniah Rahmaniah Rahmaniah Rahmaniah, Rahmaniah Refnizuida, Refnizuida Rini Susanti Saragih, Wismaroh Sanniwati Sibuea, Nunti Sinta Diana Siti Aisyah Situmorang, Mananda Tafonao, Oktapianus Waruwu, Derianus Waruwu, Marinus Mintodeus Wizni Fadhillah Yana, Yelfi Zai, Andi Rahhman Zamriyetti, Zamriyetti

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