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All Journal BIOTROPIA - The Southeast Asian Journal of Tropical Biology AL KAUNIYAH Jurnal Pendidikan Indonesia AGRIVITA, Journal of Agricultural Science BERITA BIOLOGI Naturalistic : Jurnal Kajian dan Penelitian Pendidikan dan Pembelajaran Syntax Literate: Jurnal Ilmiah Indonesia JURNAL PENDIDIKAN TAMBUSAI Jurnal Basicedu Jurnal Review Pendidikan dan Pengajaran (JRPP) JURNAL TEKNIK HIDRAULIK JURNAL SUMBER DAYA AIR Jurnal Agrotropika SECONDARY : Jurnal Inovasi Pendidikan Menengah (JIPM) Jurnal Ilmiah Dozen Globalindo Sibatik Journal : Jurnal Ilmiah Bidang Sosial, Ekonomi, Budaya, Teknologi, Dan Pendidikan ADINDAMAS: Jurnal Pengabdian Kepada Masyarakat Makara Journal of Science Jurnal Basicedu JURNAL PARADIGMA: Journal of Sociology Research and Education Innovative: Journal Of Social Science Research Transforma: Jurnal Manajemen Juni-Jurnal Pelita Nusa Harmony : Jurnal Pembelajaran IPS dan PKN
Yadi Suryadi
Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumberdaya Genetik Pertanian, Jl. Tentara Pelajar No. 3A, Bogor 16111 Telp. (0251) 8337975
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Pemodelan Hidrodinamika Aliran dan Transportasi Sedimen pada Ruas Pertemuan Sungai Citarum Hilir dan Cibeet, Jawa Barat Suryadi, Yadi; Siregar, Ruth Helena; Harlan, Dhemi; Samskerta, I Putu
JURNAL TEKNIK HIDRAULIK Vol 15, No 1 (2024): Jurnal Teknik Hidraulik
Publisher : Direktorat Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jth.v15i1.727

Abstract

Flooding and changes in riverbed morphology often become issues near river confluences, as observed at the confluence of Citarum Hilir and Cibeet Rivers. This study aims to analyze the cross-sectional capacity and riverbed changes around the confluence of Citarum Hilir and Cibeet Rivers. This study utilizes 1D numerical modeling MIKE 11 with Hydrodynamic and Sediment Transport Modules. The hydrodynamic modeling inputs are river network and cross-sectional profiles. Hydrographs with return periods of 2, 5, 10, and 25 years are used as upstream boundaries, and a discharge curve is used as the downstream boundary of the model. The model is calibrated using water surface elevation measurements taken from September 13-16, 2021. The hydrodynamic modeling results indicate that Citarum Hilir and Cibeet Rivers cannot convey flood discharges with a 2-year return period. The sediment transport modeling results show no significant changes in the riverbed of Citarum Hilir before the confluence, but degradation of approximately 0.38 – 0.46 meters occurs after the confluence. Degradation happens in zones of maximum velocity where flow turbulence and shear stress increase, causing erosion of the Citarum Hilir riverbed. Degradation also occurs near the Cibeet River confluence due to flow acceleration at the outer bend of the river. Flooding and sediment transport are natural factors that can alter the morphology of river confluences, such as the confluence of Citarum Hilir and Cibeet Rivers.Keywords:  Citarum river, Cibeet river, river confluence, hydrodinamic modeling, sedimen transport modeling 
RAPID IDENTIFICATION OF CLIMATE CHANGE IMPACTS ON THE WEST TARUM CHANNEL Dahlia, Lia; Suryadi, Yadi; Nugroho, Eka; Chaidar, Ana Nurganah; Hatmoko, Waluyo
Jurnal Review Pendidikan dan Pengajaran Vol. 7 No. 4 (2024): Vol. 7 No. 4 Tahun 2024
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jrpp.v7i4.32997

Abstract

There is no doubt that El Niño and La Niña phenomena, which are characterized by sea surface temperature (SST) anomalies in the equatorial Pacific Ocean, have significant impacts on global and regional climate. The Oceanic Niño Index (ONI), obtained from NOAA satellite imagery, is used to measure these SST anomalies. El Niño is characterized by an increase in sea surface temperature of more than 0.5°C above normal, while La Niña is characterized by a decrease in sea surface temperature of more than 0.5°C below normal. The strength of the anomaly determines whether the phenomenon is weak, moderate, strong, or very strong. El Niño and La Niña events cause various hydrometeorological disasters that directly impact rainfall and water availability. The Indonesian Maritime Continent, located between oceans, is particularly vulnerable to the impacts of these two phenomena. El Niño causes drought, while a positive ONI increases the intensity of rainfall. These phenomena have the potential to reduce rainfall, disrupt water supply, and exacerbate droughts by changing global weather patterns. This study will identify the impacts of El Niño events on rainfall and water availability in the West Tarum Canal, which covers Karawang, Bekasi, and parts of Jakarta. By understanding these impacts, we can develop effective adaptation strategies. A literature review will provide a comprehensive picture of rainfall and water availability in the era of climate change by analyzing data from previous studies.
DEVELOPMENT OF ANTIBODY TO RALSTONIA SOLANACEARUM AND ITS APPLICATION FOR DETECTION OF BACTERIAL WILT SURYADI, YADI
BIOTROPIA Vol. 16 No. 2 (2009): BIOTROPIA Vol. 16 No. 2 December 2009
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2341.736 KB) | DOI: 10.11598/btb.2009.16.2.58

Abstract

The serological assay for  the detection of  bacterial wilt caused by Ralstonia  solanacearum  RSwas able to provide  information regarding the presence of  the pathogen  in plant materials Theresearch is was aimed to develop polyclonal antibody PAb for RS detection Bacterial wholecells of  RS isolates mixed with glutaraldehyde were used to immunize New Zealand femalewhite  rabbit The  titre of  antibody  in culture supernatant was 1 1024 The PAb developed  froma ground nut RS  isolates reacted with  infected plant samples from various  locations It was ableto detect RS antigen of  crude extract and pure cultures from tomato and potato plant samples45 using dot blot ELISA however the minimum detectable concentration of  RS antigen was 10cellsml The PAb obtained in this study is sensitive enough to detect RS isolates in routineserological assayKey words  Bacterial wilt Ralstonia  solanacearum antibody dot blot ELISA
PENGARUH KEBERADAAN BENDUNGAN LEUWIKERIS DAN BENDUNGAN MATENGGENG TERHADAP ALOKASI AIR DAERAH ALIRAN SUNGAI (DAS) CITANDUY Alaniri, Yusanuari; Suryadi, Yadi
JURNAL SUMBER DAYA AIR Vol 19, No 2 (2023)
Publisher : Direktorat Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jsda.v19i2.857

Abstract

 The Citanduy watershed service area, which is located in Cilacap Regency, Ciamis Regency, Pangandaran Regency and Banjar City, is currently experiencing an increase in population growth, residential facilities, and the number of immigrants, so that the demand for raw water in these areas is increasing. On the other hand, the availability of water in the area is decreasing, so it is necessary to study potential sources of raw water to determine the solutions to be taken in order to meet the demand for raw water supply and develop potential water resources in the study area. The purpose of this study is to simulate water allocation using the WEAP (Water Evaluation And Planning) software in the Citanduy watershed area. In the data analysis section, two water balance simulation scenarios were created based on the various suggestions to be recommended for developing the potential of water resources in the study area. From the two scenarios that were implemented, a recommendation emerged to build a new irrigation area of 18.800 ha, the Leuwikeris Reservoir with a volume of 69,56 million m3 and the Matenggeng Reservoir with a volume of 500 million m3. With the plan to meet these water needs, it is necessary to conduct a feasibility study of water allocation in order to find out how technically feasible both the Citanduy River and the Leuwikeris Dam are in meeting the water needs as previously planned. Given the strategic location of West Java and Central Java Provinces and the many irrigation areas located within them, the need for and demand for water services will continue to increase over time.Keywords : simulation of water allocation, Citanduy watershed, Leuwikeris reservoir, Matenggeng reservoir. 
TUMPENG ROBYONG SEBAGAI MANIFESTASI KEARIFAN LOKAL DALAM ADAT DAN BUDAYA DESA BEJILOR Farafishah, Aisah; Suryadi, Yadi
SIBATIK JOURNAL: Jurnal Ilmiah Bidang Sosial, Ekonomi, Budaya, Teknologi, Dan Pendidikan Vol. 5 No. 2 (2026)
Publisher : Penerbit Lafadz Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/sibatik.v5i2.4409

Abstract

The Tumpeng Robyong tradition is a manifestation of local wisdom preserved by the people of Beji Lor Village as a traditional ritual and expression of socio-cultural life. This tradition not only conveys gratitude for sustenance and safety but also philosophical values, cultural symbols, and social functions that strengthen relationships among residents. This research uses a qualitative approach with a descriptive phenomenological method to explore the meaning and social function of the Tumpeng Robyong tradition from the perspective of its key participants. Data were collected through in-depth interviews with traditional leaders, community leaders, and residents involved in the ritual, supported by participant observation and visual documentation. The findings show that Tumpeng Robyong is a symbol of harmony between humans, nature, and God, as well as a medium for transmitting mutual cooperation, gratitude, solidarity, and cultural identity. This tradition plays a crucial role in maintaining social cohesion and the continuity of local wisdom amidst the challenges of modernization.
Efficacy of Four Entomopathogenic Fungi as Biopesticide Candidates against Bemisia tabaci on Soybean Prayogo, Yusmani; Ginting, Sempurna; Bayu, Marida Santi Yudha Ika; Baliadi, Yuliantoro; Harnowo, Didik; Indiati, Sri Wahyuni; Susanto, Gatut Wahyu Anggoro; Suryadi, Yadi; Trizelia, Trizelia; Widiarta, I Nyoman; Mejaya, Made Jana; Fortus, Sernan Entierro; Peuo, Vibol
AGRIVITA Journal of Agricultural Science Vol 48, No 1 (2026)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v41i0.4863

Abstract

Bemisia tabaci is a major pest of soybeans and a vector of plant viruses. This study aimed to evaluate and compare the efficacy of four entomopathogenic fungi for suppressing B. tabaci populations on soybeans. The four treatments were L. lecanii, A. aleyrodis, M. anisopliae, and B. bassiana, a comparison with the insecticide thiamethoxam and a control group without treatment. The four types tested were able to suppress B. tabaci populations by up to 75%, with A. aleyrodis being especially effective. There was no significant difference in efficacy between the four types and the insecticide thiamethoxam. Validating the efficacy of entomopathogenic fungi, there were no significant differences in plant height, dry stover weight, or number of pods between treatments with the insecticide thiamethoxam. However, significant differences occurred in the number of empty pods and seed weight, reducing yield losses by up to 78%. There was a positive correlation between the B. tabaci population and the number of empty pods (r = 0.80), while there was a negative correlation between the B. tabaci population and plant height and soybean yield (r = -0.56 and r = -0.54, respectively).
Character Qualities: Adaptability Lingkungan Belajar dalam Pembelajaran IPS Kelas VII SMPN 7 Kota Semarang Nur Sayidatun Nisa, Aisyah; Suryadi, Yadi; Carolina Sasea, Sanita; Sinta, Radini
JURNAL PARADIGMA : Journal of Sociology Research and Education Vol. 6 No. 2 (2025): JURNAL PARADIGMA: Journal of Sociology Research and Education
Publisher : Labor Program Studi Pendidikan Sosiologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/czd92a89

Abstract

Pendidikan merupakan hal yang prioritas di Indonesia, sejalan dengan tujuan nasional Indonesia dan SDGs poin 4. Tujuan tersebut bisa tercapai salah satunya dengan mewujudkan pembelajaran yang efektif. Pembelajaran efektif pasti didukung oleh lingkungan belajar, baik itu lingkungan belajar keluarga, sekolah, maupun masyarakat. Kenyataan di lapangan, khususnya kelas VII SMPN 7 Kota Semarang, peserta didik masih rendah dalam mengelola lingkungan belajar. Tujuan dari penelitian ini yaitu: 1) Mengidentifikasi kemampuan adaptability lingkungan belajar dalam Pembelajaran IPS yang sudah diterapkan oleh peserta didik kelas VII SMPN 7 Kota Semarang; 2) Menganalisis faktor-faktor yang mempengaruhi adaptability lingkungan belajar dalam Pembelajaran IPS pada peserta didik kelas VII SMPN 7 Kota Semarang. Jenis penelitian berupa penelitian kualitatif dengan desain studi kasus, terdiri dari subjek penelitian Guru IPS, peserta didik, wakil kepala sekolah bidang kurikulum dan kepala sekolah SMPN 7 Kota Semarang. Data diperoleh dengan teknik observasi, wawancara dan dokumentasi, yang dianalisis menggunakan teknik analisis interaktif. Hasil penelitian kemampuan adaptability menunjukkan variasi pada kematangan intelektual, emosional, sosial dan tanggungjawab. Kemampuan adaptasi peserta didik dalam pembelajaran IPS di SMPN 7 Kota Semarang menunjukkan bahwa siswa dengan kematangan emosional, intelektual, sosial, dan tanggung jawab yang baik cenderung memiliki tingkat adaptability tinggi. Faktor yang mempengaruhi ada dari peserta didik, maupun faktor lingkungan belajar. Untuk meningkatkan kemampuan adaptasi seluruh siswa, diperlukan sinergi antara guru, sekolah, orang tua, dan lingkungan sosial dalam menciptakan ekosistem pembelajaran yang mendukung, inklusif, serta mendorong perkembangan kognitif dan afektif peserta didik.
IMPLEMENTASI PROBLEM BASED LEARNING BERBANTUAN QR CODE DALAM PEMBELAJARAN IPS UNTUK MENINGKATKAN KEMAMPUAN BERPIKIR KRITIS SISWA KELAS IX SMP NEGERI 6 SEMARANG Galuh Setiawati, Shely; Suryadi, Yadi
SIBATIK JOURNAL: Jurnal Ilmiah Bidang Sosial, Ekonomi, Budaya, Teknologi, Dan Pendidikan Vol. 5 No. 3 (2026)
Publisher : Penerbit Lafadz Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/sibatik.v5i3.4488

Abstract

This study describes the implementation of QR Code–assisted Problem Based Learning (PBL) in social studies (IPS) and examines how it supports the development of ninth-grade students’ critical thinking skills at SMP Negeri 6 Semarang. Using a descriptive qualitative design, the study involved an IPS teacher and Grade IX students. Data were collected through classroom observations, semi-structured interviews, and documentation, and were analyzed via data reduction, data display, and conclusion drawing. Credibility was strengthened through source and technique triangulation. Findings show that the learning process followed five PBL stages: problem orientation, organizing students, investigation, developing and presenting solutions, and evaluation/reflection. QR Codes enabled quick access to digital worksheets, curated learning resources, and Padlet for collaborative reporting, which increased engagement and facilitated evidence-based discussion. Students demonstrated stronger critical thinking through (1) analyzing authentic case studies, (2) constructing logical arguments, and (3) evaluating public policies using relevant indicators of development. Supporting factors included the teacher’s facilitative role, a collaborative classroom climate, and meaningful integration of digital media. Constraints involved limited instructional time, uneven literacy levels, and unstable internet connectivity. Overall, QR Code–assisted PBL is effective for creating contextual IPS learning and fostering 21st-century critical thinking skills.
HUBUNGAN ANTARA GAYA MENGAJAR GURU DENGAN MINAT BELAJAR SISWA SMP DALAM PEMBELAJARAN IPS Lestari, Heni; Suryadi, Yadi
SECONDARY: Jurnal Inovasi Pendidikan Menengah Vol. 6 No. 3 (2026)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/secondary.v6i3.10873

Abstract

This study aims to analyze the relationship between teachers’ teaching styles and students’ learning interest in Social Studies learning at SMP Negeri 1 Kayen. The study employed a quantitative approach with a correlational research design. The population consisted of all ninth-grade students at SMP Negeri 1 Kayen, while the sample involved 30 students from class IX E selected through purposive sampling. Data were collected using a Likert-scale questionnaire developed based on indicators of teaching style and students’ learning interest variables. The data were analyzed using IBM SPSS Statistics through normality tests, linearity tests, and Pearson product moment correlation analysis. The results showed that the data were normally distributed and had a linear relationship. However, the correlation analysis revealed a correlation coefficient value of -0.122 with a significance value of 0.522 (>0.05), indicating that there was no significant relationship between teachers’ teaching styles and students’ learning interest. The relationship found was very weak and negative. Observation results indicated that variations in teaching styles, such as discussions and question-and-answer activities, were able to increase students’ participation, but were not strong enough to consistently influence students’ learning interest. The findings suggest that students’ learning interests are also influenced by other factors, including learning motivation, learning readiness, learning environment, and the use of instructional media. ABSTRAK Penelitian ini bertujuan untuk menganalisis hubungan antara gaya mengajar guru dengan minat belajar siswa dalam pembelajaran IPS di SMP Negeri 1 Kayen. Penelitian menggunakan pendekatan kuantitatif dengan jenis penelitian korelasional. Populasi penelitian adalah seluruh siswa kelas IX SMP Negeri 1 Kayen dengan sampel sebanyak 30 siswa kelas IX E yang dipilih menggunakan teknik purposive sampling. Teknik pengumpulan data dilakukan menggunakan angket skala Likert yang disusun berdasarkan indikator variabel gaya mengajar guru dan minat belajar siswa. Data dianalisis menggunakan bantuan IBM SPSS Statistics melalui uji normalitas, uji linearitas, dan analisis korelasi product moment Pearson. Hasil penelitian menunjukkan bahwa data berdistribusi normal dan memiliki hubungan linear. Namun, hasil uji korelasi menunjukkan nilai koefisien korelasi sebesar -0,122 dengan nilai signifikansi sebesar 0,522 (>0,05), sehingga tidak terdapat hubungan yang signifikan antara gaya mengajar guru dan minat belajar siswa. Hubungan yang ditemukan berada pada kategori sangat lemah dan bersifat negatif. Hasil observasi menunjukkan bahwa variasi gaya mengajar seperti diskusi dan tanya jawab mampu meningkatkan keaktifan siswa, tetapi belum cukup kuat memengaruhi minat belajar secara konsisten. Temuan penelitian menunjukkan bahwa minat belajar siswa juga dipengaruhi oleh faktor lain seperti motivasi belajar, kesiapan belajar, lingkungan belajar, dan penggunaan media pembelajaran.
Co-Authors Achmad Putri, Noviani Adang Hambali, Adang Aisyah Nur Sayidatun Nisa, Aisyah Nur Al-Amin, Al-Amin Alaniri, Yusanuari Amalia, Wuliani Ani Hendriani, Ani AZMIA, SEILA Azmia, Sila Azmiyah, Mia Budi Hendrawan Carolina Sasea, Sanita Chaidar, Ana Nurganah Daradjat, Aan Andang Deisye Supit Dhemi Harlan, Dhemi Didik Harnowo Diding Nurdin, Diding Dwi N Susilowati DWI NINGSIH SUSILOWATI Fadlila, Nazli Amni Farafishah, Aisah Fathin, Muhammad Faris Fatimah Fauziah, Nurrul Hasna Fortus, Sernan Entierro Fuadah, Nayla Layinatul Galuh Setiawati, Shely Gatut Wahyu Anggoro Susanto Ginanjar, Asep Hasan Basri Hidayah, Mudrikah Nurul Himmatul Ulya I Made Samudera, I Made I Made Samudra I Nyoman Widiarta Ifa Manzila Iim Siti Karimah, Iim Siti Kadir, Triny Suryani Kosasih, Jajang LAKSMI AMBARSARI Lestari, Heni Lia Dahlia, Lia Lukki Lukitawati Machmud, M Made Jana Mejaya, Made Jana Marida Santi Yudha Ika Bayu, Marida Santi Yudha Ika Nani Radiastuti Ni Luh Yulyana Dewi Nirmalasari, Cyntia Nirmalasari, Cyntia Nugroho, Eka Nur Sayidatun Nisa, Aisyah Nurwijayanti Peuo, Vibol PUJI LESTARI Radini Sinta, Radini Rismawati, Eri Rismayani Rita Hayati Rohimah , Elis Rosidah, Ros Saepudin, Ahmad Sally Badriya Hisniati Samskerta, I Putu SEMPURNA GINTING Siregar, Ruth Helena Sodik, Muhammad Sri Rahayuningsih Sri Wahyuni Indiati Suhendar, MA Supriadi Suryani Suryani Tri Puji Priyatno Trini Suryani Kadir Triny S. Kadir Trisnawati Trisnawati Trizelia . WAHID, RAHMAN Waluyo Hatmoko, Waluyo Wartono Wartono Yuliantoro Baliadi YUSMANI PRAYOGO