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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Hortikultura Indonesia (JHI) Jurnal Agro IT JOURNAL RESEARCH AND DEVELOPMENT Journal of Tropical Crop Science JURNAL MAHAJANA INFORMASI Jurnal Pengabdian Masyarakat

Purwono

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Author-ID : 1474999

Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Engineering Languange, Linguistic, Communication & Media Library & Information Science Public Health Other

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Potassium Fertilizer Application Rates for Fertigated Edamame Grown on Low-K Soils Fitri Alfiyah; Purnamawati, Heni; Purwono; Susila, Anas Dinurrohman
Journal of Tropical Crop Science Vol. 11 No. 03 (2024): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.11.03.320-328

Edamame, a legume consumed fresh as a vegetable, is highly nutritious, particularly protein-rich, and holds significant economic value. However, its cultivation faces challenges, especially on dry land, due to water scarcity and limited nutrient availability, particularly potassium (K). This study, which investigated the impact of potassium fertilization rate on edamame cultivation, underscores the need for further research. The study utilized a single factor, potassium fertilization rate, arranged in a completely randomized block design. Potassium rates consist of 0% X, 50% X, 100% X, 150% X, and 200% X, where X represents the recommended potassium fertilization rate according to the dry soil test device (DSTD) guidelines. Each treatment was replicated five times. Data were analyzed using ANOVA at a 5% significance level, and any significant effects were further examined using orthogonal polynomial and regression analysis. The results indicated that potassium fertilizer rates did not significantly affect edamame height, pod weight per plot, and marketable yield. However, the study identified the optimal potassium fertilizer rate, which was between 83%X and 119%X, equivalent to 83–119 kg.ha⁻¹ of KCl (50–72 kg.ha⁻¹ of K₂O). This range positively increased total branch yield, productive branches, number of flowers, pod weight per plant, number of pods per plant, and plant dry weight, producing a quadratic response pattern. The study recommends further research to optimize potassium fertilizer doses based on DSTD recommendations, particularly at a low K nutrient status, to maximize marketable yields through fertigation.

Pembuatan Sistem Zona Integritas Di Akademi Kepolisian Menggunakan Metode Rapid Application Development (RAD) Purwono; Eka Ardhianto
Jurnal Mahajana Informasi Vol 8 No 1 (2023): JURNAL MAHAJANA INFORMASI
Publisher : Universitas Sari Mutiara Indonesia Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/jurnalmi.v8i1.3888

The Integrity Zone is one of the programs implemented in various government institutions, including the PoliceAcademy, to improve public services and strengthen good governance. In this context, the development ofinformation technology-based systems is crucial to support the efficiency and effectiveness of programimplementation. This study aims to develop an Integrity Zone System at the Police Academy using the RapidApplication Development (RAD) Method. The RAD method was chosen because of its ability to speed up thesystem development process through the use of prototypes that can be changed and adapted to user needs. Theresult of this research is the Integrity Zone System at the Police Academy which has been developed using theRAD Method. This system is able to facilitate the implementation of the Integrity Zone more efficiently andeffectively. Through the features provided, users can manage and monitor activities related to the IntegrityZone, collect and analyze data, and generate the required reports. This research is expected to contribute tothe development of information technology in government institutions, especially in the implementation of theIntegrity Zone program. The RAD method used in this study can also be a reference for other system developersin dealing with projects with tight deadlines and fast changing needs..

CNN-based Classification of Bladder Tissue Lesions from Endoscopy Images Lutviana, Lutviana; Rian Ardianto; Purwono
IT Journal Research and Development Vol. 9 No. 2 (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/itjrd.2025.17867

Bladder cancer is one type of tumor that frequently occurs in the urinary system, and early diagnosis is essential to improve the prognosis and survival of patients. The study aims to develop a Convolutional Neural Network (CNN) model for bladder tissue lesion classification from endoscopic images. This study uses a dataset consisting of 1754 images, which are divided into four classes: High-Grade Cancer (HGC), Low-Grade Cancer (LGC), Non-Specific Tissue (NST), and Non-Tumorous Lesion (NTL). The proposed CNN model showed a validation accuracy of 96.29%, with high recall, precision, and F1-score in most classes. The results show that CNN-based automated methods can improve efficiency and accuracy in the early diagnosis of bladder cancer, reduce manual visual interpretation errors, and improve the quality of patient care. This study suggests increasing the training data, especially for the NTL class, and applying more complex model architecture to better results.

Peningkatan Literasi Digital: Edukasi Kejahatan Siber Dan Pinjaman Online Illegal MAN 2 Cilacap Nisa, Khoirun; Purwono; Oktavia Putri Handayani; Setiawan
Jurnal Pengabdian Masyarakat - PIMAS Vol. 4 No. 2 (2025): Mei
Publisher : LPPM Universitas Harapan Bangsa Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35960/pimas.v4i2.1831

maraknya pinjaman online ilegal. Minimnya literasi digital membuat individu lebih rentan terhadap pencurian data, serangan phishing, dan penipuan daring. Kegiatan pengabdian ini bertujuan meningkatkan kesadaran dan pemahaman siswa MAN 2 Cilacap mengenai keamanan digital serta cara menghindari ancaman siber dan pinjaman ilegal. Metode yang digunakan meliputi survei awal untuk mengukur tingkat pemahaman peserta, seminar interaktif, studi kasus, dan simulasi praktik perlindungan data serta keamanan akun digital. Evaluasi dilakukan dengan membandingkan hasil pre-test dan post-test. Hasil menunjukkan peningkatan pemahaman peserta, yaitu konsep phishing (50%), pentingnya kata sandi yang kuat (50%), mengenali pinjaman online ilegal (50%), mengamankan data pribadi (50%), serta penggunaan autentikasi dua faktor (57%). Pendekatan berbasis praktik terbukti lebih efektif dibandingkan metode konvensional karena peserta dapat langsung menerapkan strategi perlindungan digital. Literasi digital menjadi keterampilan esensial untuk menghadapi ancaman siber yang terus berkembang. Untuk keberlanjutan program, diperlukan pendampingan lanjutan, materi edukasi digital interaktif, dan forum diskusi daring agar kebiasaan digital yang lebih aman dapat terus diterapkan oleh peserta.

Population of vector and tungro disease incidence at dosage of nitrogen fertilizer in rice field Gunawan, Achmad; Purwono; Lubis, Iskandar; Widiarta, I Nyoman; Suwitono, Bayu
Jurnal AGRO Vol. 12 No. 1 (2025)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/j.agro.45232

One of the biotic threats that can reduce rice yield is tungro disease. This disease is spread with green leafhopper (Nephotettix virescens) vector. The population density of leafhoppers is one of the factors contributing to the increased incidence of tungro. Excessive nitrogen used in crop cultivation, especially rice, has been known to impact the population dynamics of insect pests. This study aims to determine the population development of green leafhoppers at different nitrogen doses. The study was conducted at the Muara Experimental Field, Bogor. The experimental treatment used three rice varieties representing susceptible varieties, resistant to green leafhoppers and resistant to tungro virus (Ciherang, IR64 and Inpari 36 Lanrang) and four levels of fertilization doses (without additional urea, Urea 250 kg ha-1, 350 kg ha-1 and 500 kg ha-1). The experiment used Split Plot design with three replication. The insect population in the field was found at the beginning of the observation and the peak of insect population density occurred at 6 WAP observationsVariety has a significant effect on insect vector population density and plant growth and yield in the field. The population density of green leafhoppers was higher in the Ciherang and IR 64 varieties than in the Inpari 36 Lanrang variety. Fertilization doses had no significant effect on the population of green leafhopper insects in the field except in the nymph phase in fertilization without the addition of urea and had no effect on growth and yield except on the number of tillers. The combination of resistant varieties and fertilization without the addition of urea reduced the population density of green. ABSTRAK Cekaman biotik yang dapat menurunkan hasil padi salah satunya penyakit tungro. Penyakit ini disebarkan oleh vektor wereng hijau (Nephotettix virescens). Kepadatan populasi wereng menjadi salah satu faktor penyebab meningkatnya keberadaan penyakit tungro. Penggunaan nitrogen yang berlebihan dalam budidaya tanaman, terutama padi, telah diketahui berdampak pada dinamika populasi serangga hama. Penelitian ini bertujuan untuk mengetahui perkembangan populasi wereng hijau pada pemberian dosis nitrogen berbeda.Penelitian dilakukan di Kebun Percobaan Muara, Bogor. Perlakuan percobaan mengunakan tiga varietas padi yang mewakili varietas rentan, tahan wereng hijau dan tahan virus tungro (Ciherang, IR64 dan Inpari 36 Lanrang) dan lima taraf dosis pemupukan (tanpa tambahan pupuk urea, Pupuk Urea 250 kg ha-1, 300 kg ha-1 dan 500 kg ha-1). Percobaan mengunakan rancanngan Split Plot dalam RAK dengan tiga kali ulangan. Populasi serangga di lapangan ditemukan diawal pengamatan dan puncak kepadatan populasi serangga terjadi pada pengamatan 6 MST. Varietas berpengaruh nyata terhadap kepadatan populasi serangga vektor, pertumbuhan dan hasil tanaman di lapangan. Kepadatan populasi wereng hijau lebih tinggi pada pertanaman varietas Ciherang dan IR 64 dibandingkan pada varietas Inpari 36 Lanrang. Dosis pemupukan tidak berpengaruh nyata terhadap populasi serangga wereng hijau di lapangan kecuali pada fase nimfa pada pemupukan tanpa penambahan urea dan tidak berpengaruh terhadap pertumbuhan dan hasil kecuali pada jumlah anakan. Kombinasi varietas tahan dan pemupukan tanpa penambahan urea mengurangi kepadatan populasi wereng hijau menyebarkan virus tungro. Kata kunci: Populasi, pupuk nitrogen, wereng hijau

Penetapatan Metode Ekstraksi Fosfor dan Kalium untuk Tanaman Cabai pada Tanah Andisol Dermawan, Rahmansyah Dermawan; Anas Dinurrohman Susila; Purwono; Budi Nugroho; Sugiyanta
Jurnal Hortikultura Indonesia (JHI) Vol. 13 No. 2 (2022): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jhi.13.2.90-96

Penetapan metode ekstraksi P dan K-tanah di Andisol merupakan langkah awal yang penting dalam menyusun rekomendasi dosis pemupukan untuk penanaman cabai. Penelitian dilakukan di rumah plastik Kebun Penelitian PKHT IPB, Tajur Bogor pada posisi 6038’12.9”S 106049’25.2.9”E pada ketinggian 388 mdpl. Sampel tanah yang digunakan berasal dari tanah Andisol, asal Desa Cikandang, Kecamatan Cikajang, Kabupaten Garut pada posisi 7021’46.7”S 107045’13.1”E. Uji tanah dilakukan di Laboratorium Pengujian, Departemen Agronomi dan Hortikultura dan Laboratorium Kimia dan Kesuburan Tanah, Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB. Penelitian disusun berdasarkan rancangan kelompok lengkap teracak dengan 1 faktor yaitu tanah Andisol dan diulang sebanyak 5 ulangan. Parameter yang diamati adalah korelasi antara lima metode ekstraksi P dan K-tanah (Mechlich-1, Bray-1, Morgan-Wolf, Ammonium asetat, dan HCl-25%) dengan bobot kering biomassa relatif (BKR) tanaman cabai. Keeratan hubungan antara kelima metode ekstraksi dengan BKR tanaman cabai ditunjukkan oleh nilai koefisien korelasi (r). Hasil penelitian menunjukkan adanya perbedaan keeratan hubungan metode ekstraksi P dan K-tanah Andisol terhadap bobot kering relatif tanaman cabai. Metode ekstraksi Morgan-Wolf menunjukkan korelasi terbaik dalam mengekstrak P-tanah Andisol (r=0.94) sedangkan pada uji korelasi K-tanah Andisol, metode ekstraksi Ammonium asetat menunjukkan hasil terbaik (r=0.97). Metode ekstraksi Mechlich-1 dapat dijadikan metode ekstraksi alternatif untuk P dan K-tanah Andisol untuk tanaman cabai. Kata kunci: Ammonium asetat, koefisien korelasi, Morgan-Wolf, uji tanah, sayuran

Dampak Cuaca Ekstrim terhadap Kehampaan Genotipe Padi: Pengantar Manajemen Produksi Berbasis Iklim Purwono; Dulbari; Santosa, Edi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 49 No. 2 (2021): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Kajian kehampaan gabah pada berbagai varietas padi dikaitkan dengan deraan angin dan curah hujan tinggi masih jarang dilakukan di Indonesia. Penelitian bertujuan mengevaluasi tingkat kehampaan beberapa genotipe padi pada perlakuan angin dan hujan selama masa generatif. Penelitian dilaksanakan di Kebun Percobaan IPB Leuwikopo, Bogor, Indonesia pada Oktober 2017-Januari 2018 menggunakan pot ember ukuran 13.9 L. Genotipe Ciapus, Fatmawati, HIPA 6, Inpari 10, dan Way Apo Buru (WAB) pada fase generatif didera angin kecepatan 10-40 km jam-1 pukul 07.00-17.00 WIB, hujan pukul 07.00-12.00 WIB, dan hujan pukul 07.00-17.00 WIB selama dua minggu. Perlakuan angin dan hujan meningkatkan jumlah gabah hampa, dengan tingkat kehampaan malai tergantung genotipe. Tanaman memperoleh perlakuan hujan pukul 07.00-17.00 memiliki persen gabah hampa lebih besar dari hujan pukul 07.00-12.00 khususnya pada genotipe WAB. Kehampaan malai pada genotipe WAB sensitif terhadap curah hujan, dan Ciapus, HIPA 6 dan Inpari 10 sensitif terhadap angin. Fatmawati relatif lebih tahan deraan angin dan hujan dibandingkan genotipe lain. Penelitian menunjukkan perlunya memilih genotipe untuk mengurangi dampak deraan angin dan curah hujan selama masa generatif. Kata kunci: adaptasi perubahan iklim, angin kencang, hujan, Oryza sativa, smart climate

Pertumbuhan dan Produksi Beberapa Varietas Padi (Oryza sativa L.) pada Berbagai Interval Irigasi Herdiyanti, Heni; Eko Sulistyono; Purwono
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 49 No. 2 (2021): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Peningkatan produksi padi pada saat musim kemarau dapat dilakukan melalui manajemen pengairan dan penggunaan varietas efisien pengunaan air. Penelitian bertujuan untuk membandingkan pertumbuhan dan produksi enam varietas padi terhadap interval irigasi yang berbeda dan mendapatkan nilai efisiensi pemakaian air irigasi. Penelitian dilaksanakan pada bulan Juni - November 2019 di lahan sawah petani Kabupaten Indramayu, mengunakan rancangan petak terbagi. Faktor pertama sebagai petak utama adalah 4 interval irigasi yaitu A= kontrol (irigasi terus menerus), B = interval 4 hari, C = interval 8 hari dan D = interval 12 hari, serta faktor kedua sebagai anak petak yaitu 6 varietas padi yaitu V1 = Ciherang, V2 = Mekongga, V3 = INPARI 32, V4 = IPB 3S, V5 = INPAGO 11 dan V6 = Situ Bagendit. Hasil penelitian menunjukkan bahwa pertumbuhan dan hasil dipengaruhi oleh interval pemberian air dan varietas. Interval pemberian air yang lebih lama menurunkan pertumbuhan dan hasil yang semakin besar. Varietas IPB 3S memiliki efisiensi pemakaian air irigasi tertinggi dan INPAGO 11 memiliki efisiensi terendah. Interval irigasi terbaik untuk seluruh varietas adalah interval 8 hari, atau irigasi perlu diberikan saat tinggi muka air 1.62 cm di bawah permukaan tanah. Kata kunci: efisiensi pemakaian air irigasi, irigasi berselang, tinggi muka air

Pertumbuhan dan Hasil Tebu (Saccharum officinarum L.) Keprasan Pertama pada Residual Kompos Blotong dan Residual Pupuk Anorganik Ridwan, Ahmad Fauzi; Purwono; Widodo, Winarso Drajad
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 50 No. 3 (2022): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Intensifikasi tebu keprasan lahan kering merupakan salah satu cara dalam rangka meningkatkan produksi gula nasional. Penelitian ini bertujuan untuk mempelajari respon pertumbuhan dan hasil dua varietas tebu terhadap residual kompos blotong dan pupuk anorganik pada budidaya tebu lahan kering. Penelitian dilakukan bulan Agustus 2019 sampai dengan Juli 2020 pada tebu keprasan pertama di lahan percobaan PT Kebun Tebu Mas, Lamongan, Jawa Timur dengan rancangan split split plot. Perlakuan terdiri atas tiga faktor yaitu varietas (PS 881 dan PS 862) sebagai petak utama, residual kompos blotong (taraf 0, 5, dan 10 ton ha-1) sebagai anak petak, dan residual pupuk anorganik (25%, 50%, 75%, dan 100% dosis rekomendasi sebesar 600 kg ha‑1 ZA dan 400 kg ha‑1 NPK 15-15-15) sebagai anak-anak petak. Hasil penelitian menunjukkan bahwa pertumbuhan varietas PS 862 lebih tinggi daripada PS 881 pada keragaan tinggi tanaman, panjang ruas, diameter, panjang batang, dan jumlah batang. Residual kompos blotong memiliki pengaruh nyata lebih baik pada taraf 10 ton ha-1 pada panjang ruas. Residual pupuk anorganik taraf 75% menyebabkan respon yang nyata lebih baik pada peubah jumlah daun, jumlah tunas, jumlah batang dan diameter. Varietas PS 862 dengan 5 ton ha-1 residual kompos blotong menghasilkan bobot batang terbaik sebesar 0.48 kg m-1. Varietas PS 881 memiliki nilai optimum sebesar 71.19% residual pupuk anorganik untuk mencapai hasil tebu sebesar 60.31 ton ha-1. Kata kunci: gula, intensifikasi, lahan kering, PS 862, PS 881

Effect of nitrogen doses on growth and yield of several varieties of tungro-infected rice plant Achmad Gunawan; Purwono; Lubis, Iskandar; Widiarta, I Nyoman
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 51 No. 2 (2023): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/ija.v51i2.46091

Tungro is still a problem in efforts to increase rice production, it can disrupt the stability of rice production if conditions worsen. Plant fertilizer application is an integral part of plant cultivation, especially nitrogen fertilizer. Improper utilization of fertilizers can harm agriculture by increasing plant vulnerability to pests and diseases. Thus, the purpose of the study was to examine the effects of various doses of nitrogen on the agronomic performance of rice plants, as well as their susceptibility to tungro. The research was conducted at the Greenhouse, Sukamandi, and the Muara Experimental Field, Center for Rice Research, Bogor. The experiments, both in the greenhouse and field, used a split-plot randomized complete block design with three replications. The main plots were variety, while the subplots were nitrogen dosage. The results showed that Inpari 36 Lanrang was better than Ciherang and IR64 in terms of plant height, number of tillers, empty grain per clump, leaf greenness, and yield/pot in the greenhouse. While from the field experiment, varieties have different flowering times, plant heights, number of filled grains, number of empty grains, 1,000-grain weight, net assimilation rate, yield/plot, and tungro incidence. The use of nitrogen fertilizer affected flowering time in the greenhouse and affected productive tillers, yield per plot in the field, and the greenness of the leaves of healthy plants. The optimum dose is 167.5 kg ha-1 nitrogen. As a result, it is recommended that controlling tungro disease should involve the integration of fertilizer application that is balanced with the use of resistant varieties.Keywords: agronomic performance, nitrogen rates, plant diseases, resistant varieties, tungro infection

Co-Authors Achmad Gunawan AHMAD JUNAEDI Anas Dinurrohman Susila Andryan, Ricky Ani Kurniawati Budi Nugroho Dermawan, Rahmansyah Dermawan Dulbari Edi Santosa Eka Ardhianto Eko Sulistyono Faqih Udin Fitri Alfiyah Gunawan, Achmad Hanny, Wanda Alifa Herdiyanti, Heni I Nyoman Widiarta Iskandar Lubis Izzawati Nurrahma, Arinal Haq Khoirun Nisa LILIK BUDIPRASETYO Lutviana, Lutviana Munif Ghulamahdi Oktavia Putri Handayani Ramadhani, Rezky Puryan Rian Ardianto Ridwan, Ahmad Fauzi Setiawan Sofiana, Annisa Sugiyanta Suwarto Suwarto Suwitono, Bayu Syaiful Anwar Wahyuni Lestari Winarso D. Widodo

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