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All Journal AGRIKA Gontor AGROTECH Science Journal Jurnal Penelitian Pertanian Terapan SCIENCE TECH: Jurnal Ilmiah Ilmu Pengetahuan dan Teknologi Agrin : Jurnal Penelitian Pertanian JMTS: Jurnal Mitra Teknik Sipil AGROTEK: Jurnal Ilmiah Ilmu Pertanian ZIRAA'AH MAJALAH ILMIAH PERTANIAN Jurnal Sains Agro Jurnal Triton Journal of Civil Engineering and Planning (JCEP) Agroradix : Jurnal Ilmu Pertanian Jurnal Agriment STATIKA: Jurnal Teknik Sipil Pro-Stek AGRIEKSTENSIA AGROTECH Research Journal Jurnal Ilmiah Mahasiswa Pertanian Journal of Agribusiness and Community Development Umus Jurnal Ilmiah Mahasiswa Agrokomplek International Journal of Mechanical, Electrical and Civil Engineering Jurnal Pertanian Agros
Rajiman Rajiman
Politeknik Pembangunan Pertanian Yogyakarta Magelang
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PENGARUH TAKARAN UREA TERHADAP HASIL DAN MUTU BENIH BAWANG MERAH Sari Megawati; Rajiman; Ismadi; Abid Raif Rahmatullah
Jurnal Pertanian Agros Vol 28 No 1 (2026): EDISI JANUARI
Publisher : Fakultas Pertanian Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v28i1.176

Abstract

Shallot (Allium ascalonicum L.) is a high-value horticultural commodity with continuously increasing demand. The success of shallot cultivation, particularly for seed production, largely depends on the availability of high-quality seeds, which is influenced by fertilization practices. Nitrogen (N) plays an important role in plant growth and yield formation; however, inappropriate N application can reduce seed quality. This study aimed to evaluate the effects of different urea fertilizer doses on the growth, yield, and seed quality of shallots, as well as to determine the optimal and efficient urea dosage. The research was conducted in Nglipar District, Gunungkidul Regency, Special Region of Yogyakarta, from April to December 2025, using a Randomized Complete Block Design with four urea dose treatments, namely 0, 100, 150, and 200 kg/ha, each replicated six times. Observed parameters included vegetative growth, yield components, and the physical and chemical quality of bulbs. The results showed that increasing urea doses tended to enhance plant height and leaf number up to a certain level, but did not always have a significant effect at the maximum vegetative stage. A urea dose of 100 kg/ha produced the highest bulb weight, productivity, and the best physical and chemical bulb quality compared to higher doses. Application of urea above the optimal rate reduced yield and nitrogen use efficiency. Therefore, a urea dose of 100 kg/ha is recommended as the optimal rate to improve the quantity and quality of shallot seed.  
Experimental Study of Artificial Coarse Aggregate Materials Made from Fly Ash Rajiman Rajiman; Ronny Hasudungan Purba; Inggit Anugriyya Netriza
International Journal of Mechanical, Electrical and Civil Engineering Vol. 3 No. 1 (2026): January : International Journal of Mechanical, Electrical and Civil Engineering
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ijmecie.v3i1.389

Abstract

In general, infrastructure development requires materials from nature and one of them is natural coarse aggregate of crushed stone. The rapid development of infrastructure in Indonesia has resulted in the depletion of the natural coarse aggregate. Therefore, other efforts are needed in terms of using coarse aggregate as a construction material. So in this study the aim is to make artificial coarse aggregate made from fly ash. The results showed that this artificial coarse aggregate met the requirements of the General Specifications of Bina Marga 2010 rev 3 as a construction material, namely for an abrasion value of 40% and water absorption of 3%. In this study, 5 types of comparisons were carried out, namely, 70:30%, 60:40%, 50:50%, 40:60%, 30:70 and for the type of composition comparison 70:30% (70% fly ash:30% cement). ) the abrasion value is still below 40%, and the amount of water absorption is below 3% so that this artificial coarse aggregate still meets the standard specifications of General Highways 2010 rev 3. Based on the price comparison that has been made between artificial coarse aggregate and natural coarse aggregate of crushed stone , shows a price disparity of Rp. 35,779 - Rp. 58,779. Thus, this artificial coarse aggregate is one solution that can be developed to reduce the environmental impact due to the presence of fly ash which is quite abundant in Indonesia.
Keunggulan dan Penciri Utama Calon Varietas Kangkung RKS 06 pada Dataran Rendah Ardi Wijayago; Rajiman Rajiman; Elea Nur Aziza
Agriekstensia : Jurnal Penelitian Terapan Bidang Pertanian Vol. 22 No. 2 (2023): AGRIEKSTENSIA: Jurnal Penelitian Terapan Bidang Pertanian
Publisher : Politeknik Pembangunan Pertanian Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34145/agriekstensia.v22i2.2908

Abstract

The purpose of this study was to identify the benefits and primary features of the proposed RKS 06 kangkong variety. The study was carried out in January through May 2023 at the Karangsari experimental field of Polytechnic for Agricultural Development in Yogyakarta Magelang, Sleman Regency, Yogyakarta Special Region. The experimental design was Complete Randomized Block Design (RAKL) with four replications using The RKS 06, Pusaka 33, KNBI001, and KD 99 variety as factors. Qualitative characters such as stem cross-sectional shape, stem color, leaf shape, leaf color, flower form, petal color, flower crown color, and head color were tested. Kangkong flavor, seed color, seed form, and pistil, harvest age, plant height, stem diameter, leaf length, leaf breadth, number of seeds per capsule, weight per plant, kangkong storageability, weight of 1000 seeds, yield per hectare, and seed demand per hectare were tested quantitative features Utilizing analysis of variance (ANOVA) and the 5% BNJ test, observational data were examined. The results demonstrated that the proposed RKS 06 kangkong variety had high production per hectare (21.8 tons/hectare). The primary features of proposed RKS 06 kangkong variety were the shape of elongated spear-shaped leaves with a tapering tip and a dark green stem color (RHS 144B).
Keragaan Hasil dan Morfologi Beberapa Varietas Sawi Pahit (Brassica juncea L.) di Dataran Tinggi Diana Trisna Levia; Rajiman Rajiman; Nicky Oktav Fauziah
Jurnal Sains Agro Vol 11, No 1 (2026): Jurnal Sains Agro
Publisher : Universitas Muara Bungo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36355/jsa.v11i1.2003

Abstract

Penelitian ini bertujuan untuk mengevaluasi karakter agronomi dan morfologi beberapa varietas sawi pahit (Brassica juncea L.) yang dibudidayakan pada kondisi dataran tinggi. Penelitian dilaksanakan pada bulan Januari hingga April 2026 di Desa Tejosari, Kecamatan Ngablak, Kabupaten Magelang, pada ketinggian 1.140 mdpl. Penelitian ini menggunakan Rancangan Acak Kelompok Lengkap (RAKL) dengan satu faktor yang terdiri atas empat varietas (SWBI002, SA 996, TM 701, dan Morakot) yang diulang sebanyak empat kali. Parameter agronomi yang diamati meliputi umur panen, tinggi tanaman, ukuran daun, jumlah daun, produktivitas hasil, daya simpan, dan umur berbunga, sedangkan karakter morfologi meliputi bentuk daun, warna daun, warna bunga, bentuk biji, warna biji, dan rasa. Hasil penelitian menunjukkan bahwa varietas berpengaruh nyata terhadap umur panen, tinggi tanaman, panjang daun, hasil, dan umur berbunga, namun tidak berpengaruh nyata terhadap lebar daun, jumlah daun, dan daya simpan. Varietas SWBI002 menghasilkan produksi tertinggi (27,35 ton/ha) dan memiliki rasa sedikit pahit, sedangkan varietas lainnya memiliki rasa pahit. Perbedaan morfologi terlihat pada bentuk daun, warna daun dan warna tangkai bunga. Variasi tersebut terutama dipengaruhi oleh faktor genetik. Penelitian ini penting dilakukan karena informasi mengenai karakter agronomi dan morfologi beberapa varietas sawi pahit pada kondisi dataran tinggi masih terbatas, khususnya yang mengkaji hubungan antara produktivitas, karakter morfologi, dan preferensi kualitas hasil secara bersamaan. Penelitian-penelitian sebelumnya umumnya hanya berfokus pada pertumbuhan dan hasil tanaman tanpa melakukan evaluasi morfologi secara komprehensif pada berbagai varietas sawi pahit di lingkungan dataran tinggi. Oleh karena itu, penelitian ini diperlukan untuk memperoleh informasi ilmiah yang lebih lengkap sebagai dasar pemilihan varietas unggul yang adaptif, produktif, dan memiliki karakter morfologi yang sesuai dengan kebutuhan budidaya maupun preferensi pasar.
Pengaruh Metode Priming pada Berbagai Umur Simpan terhadap Mutu Benih Terong Varietas Sumo Ayuni Ambarwati; Rajiman; Asih Farmia
Pro-STek Vol. 8 No. 1 (2026): June
Publisher : Universitas Suryakancana

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh metode priming pada berbagai umur simpan terhadap mutu benih terong (Solanum melongena L.) varietas Sumo. Penelitian dilaksanakan di Laboratorium Teknologi Benih Politeknik Pembangunan Pertanian Yogyakarta-Magelang pada tanggal 7-22 November 2025. Percobaan menggunakan Rancangan Acak Lengkap (RAL) faktorial 3×5 dengan tiga ulangan. Faktor umur simpan benih (A) terdiri dari benih baru (A0), benih edar (A1), dan benih expired 1 tahun (A2), sedangkan Faktor metode priming (B) terdiri dari kontrol (B0), hydropriming (B1), halopriming KNO₃ 2% (B2), H₂O₂ 1% (B3), dan air hangat 45°C (B4). Hasil penelitian menunjukkan bahwa terdapat interaksi nyata antara umur simpan benih dan metode priming pada parameter kecepatan tumbuh. Sementara itu, pada parameter daya kecambah, potensi tumbuh maksimal, indeks vigor, panjang hipokotil, panjang radikula, serta bobot segar dan bobot kering kecambah tidak terjadi interaksi yang nyata. Secara terpisah, faktor umur simpan benih (A) berpengaruh nyata terhadap seluruh parameter pengamatan, di mana benih edar (A1) menunjukkan hasil tertinggi, diikuti benih baru (A0), dan terendah pada benih berjangka (A2). Faktor metode priming (B) berpengaruh nyata terhadap kecepatan tumbuh, indeks vigor, dan pertumbuhan kecambah, dengan perlakuan terbaik yang ditunjukkan oleh hydropriming (B1) dan halopriming KNO₃ 2% (B2).
Co-Authors A Malik Abid Raif Rahmatullah Agus Wartapa, Agus Aldri Frinaldi Ananti Yekti Ardi Wijayago Arif Anshori Arif Anshori Arif Rahman Hakim Asih Farmia Assavero Muhammad Fathoni Ayuni Ambarwati Azzakiyah, Narindha Nasywa Budi Ribowo, Anggarani Dharmais, Fajri Diana Trisna Levia Diva Izzatu Resti Eko Hanudin Elea Nur Aziza Endang Sulistyaningsih Erna Widiastuti Fauziah, Nicky Oktav Gunawan Yulianto I Made Pika Adiwijaya I.M P Adiwijaya I.M.P. Adiwijaya Ika Nur Fitriana Indri Mulyani Inggit Anugriyya Netriza Ismadi Lestari Handayani Lestari Mardiyanti, Titik Megawati, Sari N.D Permata Nalinda, Rika Nurmala Devi Permata Nursidik, Mohamad Prapto Yudono Putri Ayu Dwiyana Ronny Hasudungan Purba Siti Agmaliza Siwitri Munambar Sribiyanto, Bowo Suharno Suharno Sulindra, Muhammad Rizky Susanti, Junita Tri Wibowo, Haris William Nichodemust Richard Zhafira, Elian