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All Journal JTSL (Jurnal Tanah dan Sumberdaya Lahan) Agrosains: Jurnal Penelitian Agronomi 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
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Respon Pertumbuhan dan Produksi Bawang Merah (Allium ascalonium L.) Terhadap Pupuk NPK dan Dolomit Laia, Desmawati; Dewi, Dora Silvia; Oesman, Roswita
JURNAL AGROPLASMA Vol 12, No 2 (2025): Vol 12, No 2 (2025): (JURNAL AGROPLASMA VOLUME 12 NO 2 TAHUN 2025)
Publisher : UNIVERSITAS LABUHANBATU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/agroplasma.v12i2.7921

Abstract

This study was conducted at the experimental field of the Indonesian Community Development University (UPMI), Jalan Balai Desa Pasar 12 Marendal II, Patumbak District, Deli Serdang Regency, Medan. The elevation of the site is approximately 40 metres above sea level. The study was conducted from May to July 2025. The efforts required to meet the production needs of red onions involve enhancing soil productivity by utilising NPK fertiliser and dolomite to achieve maximum red onion production. This study employed a randomised block design (RBD) with two factors: NPK fertiliser and dolomite fertiliser. For precision, the experiment was repeated three times. The first factor was NPK fertiliser (N) with four levels: N0 = Control, N1 = 10 g/polybag, N2 = 20 g/polybag, and N3 = 30 g/plant. The second factor was dolomite (D) with four levels: D0 = Control, D1 = 10 g/polybag, D2 = 20 g/polybag, and D3 = 30 g/polybag. The results of the ANOVA test that showed significant effects were followed up with a 5% DMRT test. The response of NPK fertiliser treatment to plant height at 2 mst was significantly influenced, but at plant height observations of 3 mst, 4 mst, number of leaves, number of tubers per plant, tuber diameter, and tuber weight, there was no significant effect but an increase in each treatment. The best treatment average in this study was N2 = 20 g/plant. In this case, the dose or level of dolomite treatment should be increased further to achieve maximum production. Keywords: shallots, dolomite fertiliser, NPK fertiliser
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

Abstract

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
Application of Cow Manure and Dolomite on Mung Bean (Vigna radiata L.) Plants Oesman, Roswita; Rahmaniah, Rahmaniah; Indrawati, Asmah; Rahman, Abdul
Agrosains : Jurnal Penelitian Agronomi Vol 25, No 2 (2023): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agsjpa.v25i2.71482

Abstract

The plant growth and yield could be influenced by the soil ameliorants. This study was to obtain the effect of cow manure, dolomite, and their interactions on the growth and yield of mung bean plants. This study was conducted at Marindal II Village, Patumbak Subdistrict, Deli Serdang District, North Sumatra from February to May 2022. A factorial randomized block design was selected in this study with the first factor being the dosage of cow manure (0; 2.5; 5 tons ha-1) and the second factor was the dolomite lime (0; 1; 2 kg plot-1) within three replications. Data were analyzed using ANOVA and further tested by Duncan at P<0.05. The results showed an increase in dry weight, seed weight plot-1, 100-seed weight, and yield ha-1 of mung bean were found in 5 tons ha-1 of cow manure dose by 19.06%; 103.62%; 6.48%; and 2.04 times. The plant height and dry weight of mung bean as well as soil pH also increased in 2 kg plot-1 of dolomite dose were 24.55; 15.68; and 7.68%. Their interaction of cow manure and dolomite had a slight impact on the growth and yield of mung bean plants
Co-Authors Abdul Rahman Abdul Rauf Abdul Rauf Ade Parlaungan Nasution, Ade Parlaungan Afriani, Astri Alinur, Alinur Arisandi, Nadila Asmah Indrawati 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