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All Journal Majalah Kulit, Karet, dan Plastik SemanTIK : Teknik Informasi Journal of Energy, Mechanical, Material and Manufacturing Engineering Syntax Literate: Jurnal Ilmiah Indonesia Agrin : Jurnal Penelitian Pertanian Biolearning Journal Social, Humanities, and Educational Studies (SHEs): Conference Series Jurnal Ekonomi Bisnis Indonesia ETNIK : Jurnal Ekonomi dan Teknik Jurnal Pendidikan Ilmu Pengetahuan Alam (JP-IPA) Mechanical Engineering for Society and Industry Jurnal Pengabdian Masyarakat Ilmu Terapan (JPMIT) Jurnal Manajemen Bisnis Almatama Jurnal Ilmiah Bisnis dan Ekonomi Asia (Jibeka) Journal of Tropical Crop Science and Technology
Sutardi Sutardi
Halu Oleo University
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation Other

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PEMUPUKAN PADA BUDIDAYA BAWANG MERAH SPESIFIK LOKASI PADA LAHAN PASIR Sutardi, Sutardi
Agrin Vol 21, No 2 (2017): Agrin
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.agrin.2017.21.2.374

Abstract

Kalium merupakan salah satu unsur hara kunci keberhasilan dalam mendukung produksi bawang merahspesifik lokasi di lahan pasir selatan. Tujuan penelitian untukmengetahui dosis optimal pupuk kalium pada bawangmerah spesifik lokasi lahan pasir. Penelitian dilaksanakan selama dua musim kemarau pada bulan Juni-September2015 dan Juni-September 2016 di lokasi Kelompok Tani Manunggal, Desa Srigading, Kecamatan Sanden,Kabupaten Bantul (07o 59’ 8659” S, 110o 15’ 6753” E). Penelitian menggunakan Rancangan Acak Kelompokfaktor tunggal dengan pendekatan Minus One Test yang terdiri dari 7 taraf dan kontrol diulang 3 kali. Responpemupukan kalium menggunakan Rancangan Acak Kelompok dengan 5 perlakuan tingkat dosis 0, 75, 150, 225,dan 300 kg KCl/ha. Hasil penelitian menunjukkan bahwa status hara sebelum penelitian kandungan hara kalium(Kdd) 0.18-0.25 me K/100g-1 status hara sangat rendah (SR), sehingga menjadi faktor pembatas utama. Berdasarkanminus one test dosis pemupukan optimal bawang merah spesifik lokasi lahan pasir ialah KCl 150 kg ha-1 denganpersen hasil relatif tertinggi (120%). Akan tetapi respon dosis pemupukan kalium dosis maksimum 250 kg/ha-1dengan persamaan kuadratik (R2 = 0.556). Produksi bawang merah maksimal mencapai 15-16 t/ha-1 brangkasan(setara dengan 12.75-13.6 t/ha umbi) dengan rendemen umbi ±15%. Oleh karena itu, dalam implementasinyadiperlukan dosis kalium optimal secara spesifik lokasi, tidak dosis umum secara nasional.Kata kunci: lahan pasir, bawang merah, kalium, pupuk NPKABSTRACTPotassium is one of success key of soil nutrient on shallot production support on south sandy land. Theaimed of research is to determine potassium fertilizing respon on shallot in specific location on sandy land. Thestudy was conducted on June-September 2015 and June-September 2016 on Manuggal farmer group, SrigadingVillage, Sanden Districts, Bantul Regency (07o 59’ 8659” S, 110o 15’ 6753” E). The experiment used randomizedblock design with single factor using a with single factor randomized block design with Minus One Test approachconsists of 7 sides and control is repeated for 3. Effectivity respons K fertilizer used randomized block design with5 dose levels of fertilizer treatments 0, 75, 150, 225, and 300 kg KCl/ha. The results showed that soil nutrient ofpotassium (Kdd) is 0,18-0,25 me K/100 g-1 (very low), thus becoming main limiting factor. Minus one test shallotoptimal fertilizing dose sandy land specific location is KCl 150 kg ha-1 with percent result relatively (120%).However, dose response of potassium with maximum dose is 250 kg/ha-1 of quadratic equations R2 0,556.Maximum shallot production reach 15-16 t/ha equivalent with 12,75-13,6 t/ha tuber. Therefore, in itsimplementation required of optimal dosage of potassium on specific location not general national.Key words: sandy land, shallot, potassium, N P K fertilization
Aplikasi Metode Project Benefit and Monitoring Evaluation (PBME) Untuk Evaluasi Kinerja Pelaksanaan Proyek Irigasi Wisnu Kumoro, Panji; Sutardi, Sutardi
Jurnal Etnik: Ekonomi-Teknik Vol 1 No 11 (2022): ETNIK : Jurnal Ekonomi dan Teknik
Publisher : Rifa'Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54543/etnik.v1i11.125

Abstract

PBME is important to be carried out by the provider or owner of infrastructure projects, especially the government to measure the impact of the benefits of infrastructure development, so that the benefits received by the community are in accordance with the plan, both from economic benefits and social benefits. In Indonesia, PBME has only been implemented by NGOs that provide project loans and grants. This study carried out PBME on the Serang Regency government irrigation development project in 2015-2020. The aim is to measure the impact or benefits of development on the economy in the form of agricultural products, which are calculated using indicators of economic feasibility, namely Benefit Cost Ratio (BCR) and Net Present Value (NPV), as well as conducting improvement studies and providing recommendations to stakeholders. By using the method of collecting data by conducting interviews and questionnaires to the farmers, and the Department of Public Works and Spatial Planning Kab. Attack to find income from agricultural products before and after irrigation. Then it is calculated using an investment feasibility analysis, namely BCR and NPV with the assumption of an interest rate of 3.5% and 8%. In the sensitivity analysis, in the scenario of the effect of irrigation improvements on increasing farm income, the BCR value of 0.71 was obtained at an interest rate of 3.5% and a BCR of 0.66 at an interest rate of 8%. Meanwhile, the net present value benefit was -5,916,326,647.41 at an interest rate of 3.5% and -6,264,733,105.51 at an interest rate of 8%. Judging from the results of the economic feasibility analysis, it is seen that the BCR and NPV values ??are still below the predetermined standard. It is necessary to make improvements and provide recommendations to stakeholders so that the benefits received can be in accordance with the investment feasibility criteria.
Identifikasi Keanekaragaman Flora dan Fauna di Wisata Puncak Harfat Kampung Usaha Jaya Distrik Misool Timur Kabupaten Raja Ampat Joko, Julianti; Prabawati, Ratna; Sutardi, Sutardi
Jurnal Pendidikan Ilmu Pengetahuan Alam (JP-IPA) Vol 6, No 2 (2025): November 2025
Publisher : STKIP HARAPAN BIMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56842/jp-ipa.v6i2.843

Abstract

This study aims to identify the level of flora and fauna diversity in the Puncak Harfat tourism area, Kampung Usaha Jaya, East Misool District, Raja Ampat Regency, Southwest Papua. The research employed a mixed-method approach, combining qualitative and quantitative techniques in data collection and analysis. The study was conducted over one month in March 2025, with samples consisting of all flora and fauna found in the eastern part of Puncak Harfat. Data were collected through field observations and interviews, and then analyzed using the Shannon–Wiener Diversity Index, Simpson’s Dominance Index, and Margalef Species Richness Index. The findings revealed 21 species of flora, with orchids and Nepenthes mirabilis identified as dominant species, highlighting the significance of this area as a natural habitat for local flora conservation. For fauna, 15 species were identified, dominated by marine biota such as corals (Acropora, Staghorn Coral) and Amphiprioninae fish, reflecting a diverse ecosystem. The diversity indices of flora (H’ = 2.6721) and fauna (H’ = 2.330) indicate moderate to high categories, while the dominance indices for flora (C = 0.3006) and fauna (C = 0.2655) show no extreme dominance of a single species. Margalef’s richness indices (R = 5.14 and R = 3.44) further confirm the high species richness in the area. Thus, these findings affirm that the Puncak Harfat ecosystem is stable, productive, and suitable to be maintained as a biological conservation site.
Identifikasi Keanekaragaman Tumbuhan Talas (Colocasia Esculenta L) di Wilayah Kampung Sayal Distrik Saifi Kabupaten Sorong Selatan Saflesa, Pascalina; Ulfa, Nurul Alia; Sutardi, Sutardi
Jurnal Pendidikan Ilmu Pengetahuan Alam (JP-IPA) Vol 6, No 2 (2025): November 2025
Publisher : STKIP HARAPAN BIMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56842/jp-ipa.v6i2.840

Abstract

The purpose of this study is to determine the diversity of taro plants in the Sayal village area of the Saifi district in Sorong regency. The type and design of this study is descriptive exploratory, which aims to describe the diversity of taro plants. It was conducted in May 2022, in the Sayal village area of the Saifi district, South Sorong regency. The sample for this study was all taro plant varieties classified under theColocasia genus.  Data collection was carried out through the selection of study objects (STO) and the observation and scoring of taro morphological characters. Data were analyzed quantitatively using descriptive methods by calculating the similarity index to determine the level of similarity and varietal diversity. The results of this study can be summarized as follows: there are three types of taro plants in the Sayal village area of the Saifi district, Sorong Regency, from three villages, namely Komagaret village(Bogor taro), Baibet village (Belitung taro), and Sayal village(swamp taro).
Hubunngan Gerakan Literasi Sekolah (GLS) Berbantuan Aplikasi Canva dengan Kemampuan Membaca Pemahaman Siswa Kelas V Sekolah Dasar Widyaningsih, Yennie Indriati; Sutardi, Sutardi; Rohani, Rohani; Muslihah, Neni Nadiroti; Pujiasti, Dea Asri
Social, Humanities, and Educational Studies (SHES): Conference Series Vol 8, No 3 (2025): Social, Humanities, and Educational Studies (SHEs): Conference Series
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/shes.v8i3.107490

Abstract

This study is motivated by students who still have difficulty in understanding reading in depth. This is indicated by the low results of students' reading evaluation, both in the aspects of answering questions, finding the main idea, and concluding the content of the text. The purpose of this study was to determine the relationship between GLS and reading comprehension skills. This research method is a correlational approach. With the sample choosing total sampling of 39 students, with data collection techniques in the form of tests and questionnaires. The data processing and analysis techniques used statistical prerequisite tests, and hypothesis testing (correlation). As for the results of descriptive statistical analysis, the research results of the school literacy movement have an average of 74.40 and a percentage of 74.4% and the average reading comprehension ability of students has an average of 56.41 and a percentage of 56.4% with a very good category. Based on the results of statistical analysis, there is a positive and significant relationship between the school literacy movement assisted by the canva application and the reading comprehension skills of grade V students of SDN 2 Sukarame, Bayongbong District. The direction of the positive relationship is indicated by the value of the correlation coefficient of 0.511 is positive. There is a significant relationship indicated by the correlation coefficient of r count 0.511 and r table 0.172 (r count> r table). This means that every time there is an increase in the quality of the school literacy movement assisted by the canva application, it will be followed by an increase in the quality of the school literacy movement assisted by the canva application.Penelitian ini dilatarbelakangi oleh siswa yang masih mengalami kesulitan dalam memahami bacaan secara mendalam. Hal ini ditunjukkan dengan rendahnya hasil evaluasi membaca siswa, baik dalam aspek menjawab pertanyaan, menemukan gagasan utama, maupun menyimpulkan isi teks. Tujuan dari penelitian ini adalah untuk mengetahui hubungan GLS dengan kemampuan membaca pemahaman. Metode penelitian ini berupa pendekatan korelasional. Dengan sampel memilih total sampling yaitu sebanyak 39 siswa, dengan Teknik pengumpulan data berupa tes dan angket. Adapun teknik pengolahan dan analisis data menggunakan uji prasyarat statistic, dan uji hipotesis (korelasional). Adapun hasil analisis statistik deskriptif diperoleh hasil penelitian gerakan literasi sekolah memiliki rata-rata 74,40 dan presentase 74,4% dan rata-rata kemampuan membaca pemahaman siswa memiliki rata-rata 56,41 dan presentase 56,4% dengan kategori sangat baik. Berdasarkan hasil analisis satistik, terdapat hubungan yang positif dan signifikan antara gerakan literasi sekolah berbantu aplikasi canva dengan kemampuan membaca pemahaman siswa kelas V SDN 2 Sukarame Kecamatan Bayongbong. Arah hubungan positif ditunjukan dengan nilai dari koefisien korelasi sebesar 0,511 adalah positif. Ada hubungan yang signifikan ditunjukan dengan koefisien korelasi sebesar r hitung 0,511 dan r tabel 0,172 (r hitung > r tabel). Ini artinya setiap kali adanya kenaikan pada kualitas gerakan literasi sekolah berbantu aplikasi canva maka akan diikuti dengan kenaikan kemampuan membaca pemahaman siswa. Oleh karena itu, hendaknya semua pihak bekerja sama memfasilitasi dan mendukung upaya peningkatan gerakan literasi sekolah ini dalam hal penyediaan sumber daya yang memadai seperti memperbaiki infrastruktur sekolah dan menyediakan lebih banyak buku serta materi bacaan yang bervariasi.
Optimization air circulation in negative pressure closed-house poultry buildings: A study on evaporative cooling pad thickness and exhaust fan operating pattern Lillahulhaq, Zain; Widodo, Wawan Aries; Sutardi, Sutardi; Yone, Thearith
Mechanical Engineering for Society and Industry Vol. 5 No. 2 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.14096

Abstract

An optimal environment for raising poultry requires a cool, humid climate. Negative pressure air circulation is widely implemented in closed-house cages, combined with evaporative cooling pads (ECP). Fresh air cannot naturally pass through the ECP due to the porosity of the material. The characteristics of the ECP and the configuration of the exhaust fan operating pattern affect airflow distribution, including velocity, temperature, and relative humidity (RH) levels. This research simulated the effect of varying ECP thickness on airflow distribution inside a closed-house cage. The simulation was run under 3D steady-state conditions with ECP thicknesses of 100 mm, 150 mm, 200 mm, and 300 mm, respectively. The ECP was kept wet, resulting in incoming air with 60% humidity and a temperature of 27 °C. The study used the K-ω SST turbulence model and SIMPLE second-order discretization. The analysis also provides recommendations for optimal exhaust fan operation during summer and identified restricted area. Five different fan operating patterns were tested, combining a small exhaust fan with two large ones. This analysis based on several parameter which refers uncomfortable environment, including: velocity, temperature, RH levels, and pollutant gas concentration. Hazardous conditions were determined by the maximum values observed across 42 iso-surfaces spaced 1 meter apart along the x-axis. A thicker ECP resulted in a higher pressure drop, reducing temperature differences inside the cage and leading to a more uniform temperature distribution. The 100 mm ECP thickness, the thinnest ECP layers, lowered the temperature inside the closed-house cage. The study suggests that, during summer, operating one small exhaust fan and one large fan is optimal due to the reduced presence of hazardous areas inside the cage.
Co-Authors Aisyah, Pratiwi Nur Alfan, Muazharin Anton Nugroho Bambang Pramono Dahlia Dahlia Fachrul, Muh fatem, helenafatem Hakiki, Kharisma Nur Hardi Warsono Herminiwati Herminiwati, Herminiwati Hidayat, Adnan I Gusti Ngurah Antaryama Ika Purwanti Ningrum, Ika Purwanti Irwandi Irwandi Joko, Julianti Jumadil Nangi Justawan, H. Laode Muhamad Tajidun LM Bahtiar Aksara, LM Bahtiar LM Fid Aksara, LM Fid LM. Bahtiar Aksara, LM. Bahtiar Luthfi Hakim Malaka, Muhammad Hajrul Mukhlis, Suhardi Neni Nadiroti Muslihah NINGSIH, NINGSIH Nur’aini, Asyifa Ade Pardede, Meslo Pardede, Meslo Pitoyo, Bambang Juni Prabawati, Ratna Pujiasti, Dea Asri putri, faradilla anggita Raharjo, Dwi Prasetyo Kusumo Rahmi Nuraztia, Rahmi Retno Sunu Astuti RO’IS, IHSAN Rohani Rohani Rosdiana, Wenny Rumpoko Wicaksono Saflesa, Pascalina Sajiah, Adha Mashur Setyo Hariyadi Silondae, Saskia Randawula Sriyanti, Esi Statiswaty Suci Natasiya, Chindy Elfiana Suherry Suherry, Suherry Sumarsono Sumarsono Taslima Taslima, Taslima Tobida, Novalia Ulfa, Nurul Alia Wawan Aries Widodo Wisnu Kumoro, Panji Yamin, Muh Yeni, Afni Yennie Indriati Widyaningsih Yone, Thearith Zaid, Ramadhin Zain Lillahulhaq