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All Journal Jurnal Radioisotop dan Radiofarmaka CEMARA Jurnal Rekayasa Sipil dan Desain Jurnal Media Pertanian Jurnal Pertanian Agros TAPAK (Teknologi Aplikasi Konstruksi) : Jurnal Program Studi Teknik Sipil Jurnal Agrotek Lestari Agrienvi : Jurnal Ilmu Pertanian Devotion: Journal of Research and Community Service Nusantara Hasana Journal Teknika Sains : Jurnal Ilmu Teknik Proceedings Series on Physical & Formal Sciences Media Pertanian Jurnal Agroteknologi Devotion: Journal Corner of Community Service AGRIEKSTENSIA AGRIC Bhumiputra: Jurnal Penelitian dan Pengabdian Masyarakat Global Jurnal Ilmu-Ilmu Pertanian
Rajiman Rajiman
Center for Radioisotopes and Radiopharmaceuticals, National Nuclear Energy Agency Puspiptek Serpong, Tangerang - 15314, Indonesia
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Analisis Kelayakan Investasi Finansial Terhadap Biaya Produksi dan Harga Jual Pada Penambangan PT. Batu Mulia Andalas Lampung Rajiman, Rajiman
TEKNIKA SAINS Vol 9, No 2 (2024): TEKNIKA SAINS
Publisher : Universitas Sang Bumi Ruwa Jurai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24967/teksis.v9i2.3610

Abstract

Beton merupakan material yang salah satu komponennya adalah batu belah atau andesit, yang berasal dari lokasi penambangan. Penambangan batu andesit di Desa Sidomekar, Kecamatan Katibung, Lampung Selatan, dikelola oleh PT. Batu Mulia Andalas Lampung. Investasi di sektor ini membutuhkan biaya besar dan risiko tinggi, sehingga perencanaan yang matang sangat penting. Namun, PT. Batu Mulia Andalas Lampung belum melakukan studi kelayakan finansial. Tujuan penelitian ini adalah untuk menentukan kelayakan suatu investasi, berapa lama pengembalian modal yang telah diinvestasikan serta memberi gambaran untuk menentukan perkiraan harga jual dan biaya produksi yang layak. Kriteria kelayakan investasi finansial yang digunakan ada beberapa perhitungan yaitu Net Present Value (NPV), Gross Benefit Cost Ratio (G B/C Ratio), Internal rate of Return (IRR), dan Payback Period (PBP). Metode untuk mencari nilai sensitifitas adalah dengan Trial and Error dengan mengganti nilai varialel peubah. Biaya investasi yang direncanakan untuk membuka tambang adalah sebesar Rp. 34.290.290.099 yang terdiri dari modal tetap yaitu sebesar Rp. 25.243.417.650 dan modal kerja sebesar Rp. 9.046.872.449. Hasil analisis menunjukkan Net Present Value (NPV) positif yaitu sebesar Rp 5.968.559.177, Internal Rate of Return (IRR) investasi tersebut lebih besar dari tingkat pengembalian minimum yang diharapkan (i*=4%) yaitu sebesar 11,7%, nilai Benefit Cost Ratio (BCR) 1,24 (lebih dari 1), dan Payback Periode (PBP) selama 4,12 tahun yaitu lebih cepat dari umur investasi selama 5 tahun. Titik kerugian investasi proyek terjadi jika harga mengalami penurunan sebesar 0,9% atau biaya operasi meningkat sebesar 13%, karena pada kondisi tersebut nilai NPV, IRR, BCR, dan PBP tidak memenuhi kriteria kelayakan.
VARIABILITAS FENOTIPE GALUR HARAPAN MENTIMUN (Cucumis sativus) BUAH KECIL BERWARNA HIJAU SEDANG GENERASI 3 Alim, Ahmad Fathul; Rajiman, Rajiman; Aziza, Elea Nur
Media Pertanian Vol 9, No 2 (2024): Media Pertanian
Publisher : Program Studi Agroteknologi Universitas Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37058/mp.v9i2.12323

Abstract

Tujuan penelitian untuk mengetahui variabilitas karakter fenotipe mentimun galur harapan ukuran buah kecil berwarna hijau sedang generasi 3. Penelitian  telah dilaksanakan bulan Maret - Mei 2024 di Teaching Factory Karangsari, Wedomartani, Ngemplak, Kabupaten Sleman, Daerah Istimewa Yogjakarta. Materi yang digunakan dalam penelitian ini adalah 3 varietas mentimun yaitu AGB KE 0316, KE 4723, dan 01.08. Metode penelitian menggunakan rancangan percobaan single plant yaitu dengan menanam dan mengamati setiap individu tanaman hasil persilangan. Analisis data karakter kualitatif mengacu pada pedoman dengan deskriptif. Analisis data keragaman dianalisis dengan dendogram. Hasil penelitian dari variabilitas galur harapan yang diamati diperoleh 3 klaster yang dihasilkan yaitu klaster kulit buah hijau sedang, hijau sedang bentuk ujung buah runcing, dan hijau terang menghasilkan dendogram dengan koefisien tingkat kemiripan 0-50 %. Hal ini disebakan karena terdapat perbedaan keragaman pada bagian bentuk daun, intensitas warna dasar kulit dan bentuk ujung buah. Kode tanaman terpilih dalam penelitian ini adalah 01.08.05 dengan sifat kecil dengan memiliki karakter kulit buah berwarna hijau sedang. The study aims to determine the variability of phenotypic characters of cucumber small green fruit size hopeful strains of generation 3. The research was conducted in March - May 2024 at Teaching Factory Karangsari, Wedomartani, Ngemplak, Sleman Regency, Special Region of Yogyakarta. The materials used in this study were 3 cucumber varieties namely AGB KE 0316, KE 4723, and 01.08. The research method used a single plant experimental design by planting and observing each individual plant of the cross. Data analysis of qualitative characters refers to the guidelines with descriptive. Data analysis of diversity was analysed by dendrogram. The results of the research from the variability of the observed hope strains obtained 3 clusters, namely the cluster of medium green fruit skin, medium green pointed fruit tip shape, and bright green produced a dendrogram with a similarity level coefficient of 0-50%. This is because there are differences in diversity in the shape of the leaves, the intensity of the basic colour of the skin and the shape of the tip of the fruit. The selected plant code in this study is 01.08.05 with a small trait with a medium green fruit skin character.
PENGARUH VARIETAS TERHADAP HASIL KACANG PANJANG (Vigna unguiculata L.) DI TANAH REGOSOL Topan, M. Takwir; Rajiman, Rajiman; Megawati, Sari
Agrienvi: Jurnal Ilmu Pertanian Vol. 18 No. 2 (2024): Desember 2024: Journal Agrienvi
Publisher : Agrienvi: Jurnal Ilmu Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/aev.v18i2.15079

Abstract

Penelitian bertujuan untuk mengetahui pengaruh varietas terhadap hasil kacang panjang di tanah regosol. Penelitian ini dilaksanakan pada bulan Februari sampai Mei 2024 di kebun riset PT. Hibrida Jaya Unggul, Sendangtirto, Berbah, Sleman, Daerah Istimewa Yogyakarta. Penelitian ini menggunakan Rancangan Acak Kelompok Lengkap 4 perlakuan yang terdiri dari calon varietas JS KCP 03, varietas Anjani, varietas Zalva, dan varietas Gultor dengan 4 ulangan. Data kuantitatif dianalisis menggunakan analisis sidik ragam dilanjutkan dengan BNJ 5%. Berdasarkan hasil pengamatan pada karakter kuantitatif beberapa varietas menunjukkan bahwa perlakuan varietas berbeda nyata terhadap parameter panjang polong, diameter polong, bobot per polong, jumlah biji per polong, jumlah polong per tanaman, berat polong per tanaman, berat polong per petak, dan produktivitas, namun tidak berpengaruh nyata terhadap parameter umur berbunga dan umur panen.
Keunggulan dan Penciri Utama Calon Varietas Kangkung RKS 06 pada Dataran Rendah Wijayago, Ardi; Rajiman, Rajiman; Aziza, Elea Nur
AGRIEKSTENSIA 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).
Utilization of Deep Groundwater to Support Rice Cultivation in Dry Land Anshori, Arif; Srihartanto, Eko; Minhal, Fibrianty; Budiarti, Sri Wahyuni; Rajiman, Rajiman; Suswatiningsih, Tri Endar
Proceedings Series on Physical & Formal Sciences Vol. 8 (2025): Prosiding Seminar Nasional Fakultas Pertanian dan Perikanan
Publisher : UM Purwokerto Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/pspfs.v8i.1480

Abstract

Land limitations cause dry land to become an alternative for food fulfillment, especially rice. This research aimed to investigate the use of deep groundwater for rice plants irrigation in dry land in the second growing season in terms of production, economy and social aspects. The research was conducted in dry land of Gunungkidul D.I. Yogyakarta Indonesia, in the second growing season. Rainfall was observed to determine the time of irrigation. Sidenuk, Inpari 33 and Inpari 42 varieties, complete with rice production technology components, were tested using a Randomized Completely Block Design with 3 replications. Interviews were conducted to explore the economy and farmers perceptions. The results showed additional irrigation from groundwater in supporting rice planting in the second growing season, with Inpari 42 providing the highest yield of dry grain harvested of 7.2 tons ha-1, straw of 9.6 tons ha-1, carbon absorption in grain of 3.9 tons ha-1, carbon absorption in straw of 4.3 tons ha-1, profit in Indonesian Rupiahs of 17,670,000 and R/C of 2.41. Farmers' constraints on rice planting in the second growing season, especially in terms of capital, control of plant pests and organic fertilizer.
PENGARUH JARAK TANAM DAN PUPUK ANORGANIK TERHADAP BIOMASA, KLOROFIL, DAN KADAR AIR RELATIF DAUN BAWANG MERAH FASE VEGETATIF Rajiman, Rajiman; Megawati, Sari; Anshori, Arif; Martini, Tri
Agros Journal of Agriculture Science Vol 26, No 1 (2024): Januari
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v26i1.3954

Abstract

The aim of this study was to study the effect of plant spacing and variations of inorganic fertilizers on the biomass, chlorophyll, and relative moisture content of shallots in the vegetative growth phase. The research was conducted in May–June 2023 in Plembuatan Village, Playen District, Gunungkidul Regency, D.I. Yogyakarta. The study used a Complete Factorial Randomized Block Design with 3 replications. The first factor is the spacing (J), consisting of: J1 = 10x10 cm2, J2 = 10x15 cm2, J3 = 10x20 cm2, and J4 = 15x15 cm2. The second factor is the variation of inorganic fertilizers consisting of: N1 = basic fertilize of NPK Phonska r 250 kg/ha, SP-36 150 kg/ha, follow-up I and II NPK Phonska 75 kg/ha, N2 = basic fertilizer of NPK Phonska 250 kg/ha, SP -36 150 kg/ha, follow-up I and II urea 25 kg/ha, N3 = basic fertilizer of NPK Phonska 400 kg/ha, SP-36 150 kg/ha, follow-up I and II urea 25 kg/ha, and N4 = basic fertilizer of NPK phonska 250 kg/ha, SP-36 150 kg/ha, follow-up I and II urea 25 kg/ha and KCl 18.75 kg/ha. The results showed that the spacing treatment and fertilizer variation significantly interacted with the parameters of plant height, number of leaves, oven dry weight per clump, chlorophyll a content, chlorophyll b content, total chlorophyll content and relative moisture content of leaf aged 4 WAP, but did not significantly interact with fresh weight per clump. The increase in plant spacing and variations in inorganic fertilizers did not significantly affect plant height, number of leaves and wet weight per clump. Keywords: Biomass, Chlorophyll, and Inorganic Fertilizers INTISARIPenelitian bertujuan mengetahui pengaruh jarak tanam dan variasi pupuk anorganik terhadap biomasa, klorofil, dan kadar air relatif daun bawang merah pada fase pertumbuhan vegetatif. Penelitian dilaksanakan bulan Mei–Juni 2023 di Desa Plembuatan, Kapanewon Playen, Kabupaten Gunungkidul, Provinsi D.I. Yogyakarta. Penelitian menggunakan Rancangan Acak Kelompok Lengkap Faktorial dengan 3 ulangan. Faktor pertama jarak tanam (J), terdiri : J1 = 10x10 cm2, J2 = 10x15 cm2, J3 =10x20 cm2, dan J4 = 15x15 cm2. Faktor kedua  variasi pupuk anorganik terdiri : N1 =  Pupuk dasar NPK phonska 250 kg/ha, SP-36 150 kg/ha, susulan I dan II  NPK Phonska 75 kg/ha, N2 =  Pupuk dasar NPK phonska 250 kg/ha, SP-36 150 kg/ha,  susulan I dan II   urea 25 kg/ha, N3 =  Pupuk dasar NPK phonska 400 kg/ha, SP-36 150 kg/ha, susulan I dan II  urea 25 kg/ha,  dan N4 =  Pupuk dasar NPK phonska 250 kg/ha, SP-36 150 kg/ha, susulan I dan II urea 25 kg/ha dan KCl 18,75 kg/ha. Hasil penelitian menghasilkan perlakuan jarak tanam dan variasi pupuk nyata berinteraksi terhadap parameter tinggi tanaman, jumlah daun, bobot kering oven per rumpun, kandungan klorofil a, kandungan klorofil b, kandungan klorofil total dan kadar air relatif daun bawang umur 4 MST, tetapi tidak nyata berinteraksi terhadap bobot basah per rumpun. Peningkatan jarak tanam maupun variasi pupuk anorganik tidak nyata mempengaruhi tinggi tanaman, jumlah daun dan bobot basah per rumpun. Kata Kunci : Biomasa, Klorofil, dan Pupuk Anorganik.
Karakter Kualitatif dan Kuantitatif Beberapa Varietas Paria (Momordica charantia L.) di Dataran Rendah Huda, Nabila Farah; Megawati, Sari; Rajiman, Rajiman
Jurnal Agroteknologi (Agronu) Vol 4 No 02 (2025): Jurnal Agroteknologi
Publisher : Universitas Ma'arif Nahdlatul Ulama Kebumen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53863/agronu.v4i02.1582

Abstract

Bitter melon (Momordica charantia L.) is a commodity with quite high market demand and requires the fulfillment of seed needs that are in accordance with farmer preferences. This study aims to determine the superiority of qualitative and quantitative characters of several varieties of bitter melon in the lowlands. This study was conducted from October 2024 to January 2025 at the Trial Land of CV Trias Putra Agro Maju Sejahtera in Bakalan Lor Hamlet, Bligu Village, Ngluwar District, Magelang Regency, Central Java. The method used in this study was a Completely Randomized Block Design (RAKL) consisting of 4 variety treatments including PA-A = Yunan, PA-B = Sultan, PA-C = PA 001, and PA-D = Trinity. Data were analyzed using analysis of variance and continued with the BNJ Test with a level of 5%. The results showed a significant effect on all quantitative parameters such as harvest age, fruit length, fruit diameter, productivity, and storage life. From the study, it can be concluded that the PA 001 variety of bitter melon has qualitative character advantages in the form of leaf shape, leaf blade, leaf apex shape, nodule shape, fruit base shape, and fruit tip shape. The Yunan variety has qualitative advantages in the form of leaf base shape. The Sultan variety has qualitative advantages in the parameters of fruit shape and fruit serration. The Trinity variety tends to excel in qualitative characters such as flower shape. In addition, the PA 001 variety has quantitative advantages in the form of fruit diameter and storage capacity which are significantly different compared to the Yunan, Sultan and Trinity varieties. The PA 001 variety and the Yunan variety obtained significantly different results in the parameters of age from harvest, fruit length, and productivity compared to the Sultan and Trinity varieties
Pengaruh Model Pengeringan dan Penyimpanan Umbi Benih terhadap Produksi dan Mutu Bawang Merah (Allium ascalonicum L.) di Lahan Pasir Andika Timur Hari Pradana; Rajiman, Rajiman; Fauziah, Nicky Oktav
Jurnal Agroteknologi (Agronu) Vol 4 No 02 (2025): Jurnal Agroteknologi
Publisher : Universitas Ma'arif Nahdlatul Ulama Kebumen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53863/agronu.v4i02.1627

Abstract

Shallots is a horticultural commodity that has economic value and is vital for household consumption and other needs. The continuous demand requires the availability of quality stock. This research aimed to determine the effect of drying and storage models of seed bulbs on the yield and quality of red onion seeds in sandy land. The study was conducted in, Dukuh Patihan, Gadingsari Village, Sanden District, Bantul Regency, Special Region of Yogyakarta, from February 2025 to April 2025. This research used a Completely Randomized Block Design with treatments of drying and storage models: sunlight with leaves (SMDD), sunlight without leaves (SMTD), UV plastic with leaves (PUVDD), and UV plastic without leaves (PUVTD). Data analysis used ANOVA (Analysis of Variance); if the variance showed a significant effect, it was followed by the DMRT (Duncan Multiple Range Test) at a 5% level. The results showed that the use of drying and storage techniques had no significant effect on the parameters of plant height, number of leaves, wet bulb weight per clump, productivity, bulb weight, and had a significant difference in the parameters of dry bulb weight per clump, number of bulbs per clump, bulb diameter, and bulb specific weight. The drying and storage technique using sunlight with leaves (SMDD) produced the best results in terms of plant height, number of leaves, productivity, wet bulb weight per clump, and bulb diameter
Heritabilitas Hasil Pemurnian Galur Harapan Mentimun (Cucumis sativus L.) Kecil Berwarna Hijau Sedang Generasi 4 Asahak, Alif Ibnu Sina; Rajiman, Rajiman; Fauziah, Nicky Oktav
Jurnal Agroteknologi (Agronu) Vol 4 No 02 (2025): Jurnal Agroteknologi
Publisher : Universitas Ma'arif Nahdlatul Ulama Kebumen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53863/agronu.v4i02.1650

Abstract

Currently, the market demand for cucumber (Cucumis sativus L.) is high, but productivity is declining due to the limited availability of quality seeds. Therefore, a sustainable plant breeding program is necessary to produce superior, high-quality varieties. This research aims to determine the heritability and clustering of promising cucumber lines (Cucumis sativus L.) with a medium green color in the fourth generation. The study was conducted from December 2024 to February 2025 at the Teaching Factory Celeban Polbangtan Yogyakarta-Magelang in Tahunan, and Umbulharjo District, Yogyakarta City, Special Region of Yogyakarta, at coordinates 7°48'17"S, 110°22'54"E. The research method employed a single plant approach, involving the planting and observation of each cucumber plant from the promising fourth generation resulting from the crossbreeding of KE 4723 and AGB KE 0316. Quantitative observation data were analyzed using heritability, cluster, and descriptive methods, while qualitative data were collected using cluster analysis methods. Based on the research results, the heritability value for the seven quantitative characters is categorized as high, with a criterion of value ≥ 50%, indicating high effectiveness for selection. The results of the cluster analysis on the diversity of characteristics among strains 01.08, KE 4723, and AGB KE 0316, based on 9 characteristics, reveal 3 clusters: cluster 1 is characterized by light green fruit skin color, cluster 2 by medium green fruit skin color, and cluster 3 by dark green fruit skin color
Pemanfaatan Limbah Fly-Ash Untuk Campuran Bata di Desa Umbul Limus Kecamatan Marga Punduh Kabupaten Pesawaran Rajiman, Rajiman
Bhumiputra: Jurnal Penelitian dan Pengabdian Masyarakat Global Vol. 1 No. 4 (2024): Desember
Publisher : Yayasan Cendekia Gagayunan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63142/bhumiputra.v1i4.125

Abstract

This community service program aims to utilize fly ash waste as a mixture in brick production in Umbul Lumus Village, Marga Punduh District, Pesawaran Regency. The program was implemented using a community-based approach, involving the local community actively in every stage of the activity, from problem identification to production implementation. The results show that the community successfully produced high-quality fly ash-based bricks with higher compressive strength, lower water absorption, and better production cost efficiency compared to conventional bricks. In addition, this program also enhanced the community’s knowledge and skills in waste utilization and environmental management. Significant social impacts were observed, including increased environmental awareness, behavioral changes, and the formation of small business groups focused on fly ash-based brick production. This program is expected to serve as a model for sustainable community empowerment that can be applied in other areas to address waste issues and improve local economies.
Co-Authors Aditya Mahatidanar Hidayat Akbar, M Ramadhan Alim, Ahmad Fathul Allamsyah, Yudha Ghazy Andika Timur Hari Pradana Any Nurhasanah Ari Gunawan Arif Anshori, Arif Asahak, Alif Ibnu Sina Azli, Mahardika Deltrian Bhakti, M Aditya Wira Budi Tarigan Busono, Aulia Elea Nur Aziza Fadilla, Irdo Fatikanova, Sindi Fauzi, Ihsan Syafiq Luthfi Fauziah, Nicky Oktav Hari Suryanto Huda, Nabila Farah Ibrahim, M Hamzah Imam Kambali Indrawan, Surya Irsyad, Alhafidz Karim, Iksan Khasanah, Deah Anisatun Kodrad Winarno Listari, Vita Majid, M. Majid Mansur, Maulana Megawati, Sari Minhal, Fibrianty Muhammad Adelin Nazhirin Ningrum, Setya Nugraheni , Evy Nahdia Zuliastuti Pangestu, Adhi Pergiansyah, Muhammad Arya Prasetya, Genta Adi Prayogi, Wempy Putra, Daffa Arinanda Putra, Jhoni Esa Putra, M Iqbal Syah Pratama Ramadhan, Alga Anur Rivaldi, Muhamad Farhan Ronny Hasudungan Purba Sari, Titis Lukita Saskia, Dewi Serly Abraham Sarongalo SRI WAHYUNI BUDIARTI Srihartanto, Eko Sugito - Sutiman Sutiman, Sutiman Syaefudin Ichwan Tigraha, Leonardi Tonny Heryanto Tonny Heryanto Sumantri Topan, M. Takwir Tri Endar Suswatiningsih, Tri Endar Tri Martini Wibowo, Bagus Tri Wibowo, Handy Tri Widiyana, Made Dimas Wijayago, Ardi Yahya, Rian Ainun Yulfriwini, Yulfriwini Zhafira, Elian Zurhaldi, Thoriq Ilham