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All Journal JURNAL AGROTEKNOLOGI AGROTEK: Jurnal Ilmiah Ilmu Pertanian Unri Conference Series: Community Engagement JURPIKAT (Jurnal Pengabdian Kepada Masyarakat) Bioscientist : Jurnal Ilmiah Biologi Journal of Rural and Urban Community Empowerment
Dedi Mulyadi
Universitas Riau
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Dentistry Earth & Planetary Sciences Education Energy Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Public Health Social Sciences

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KERAGAMAN GENETIK MUTAN M-2 CABAI MERAH KERITING (Capsicum annuum L.) BERDASARKAN PENANDA RAPD Rosmaina Rosmaina; Dedi Mulyadi; Rita Elfianis; Zulfahmi Zulfahmi
Jurnal Agroteknologi Vol 10, No 2 (2020): Februari 2020
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/ja.v10i2.8780

Abstract

Chili is an important horticultural plant in Indonesia. This research aims to carry out RAPD analysis on Mutant M2 of chili pepper (Capsicum annuum L.). Six M2 genotypes of chili irradiated by gamma ray and control plants were amplified by 16 random primers. The amplification results of M2 chili with 16 primers produced 118 loci, with fragment sizes ranging from 150-2000 bp. The number of polymorphic loci was 96 loci and the percentage of polymorphic loci was 83.23%. The DNA fragment polymorphism produced in this research was relatively high and it showed that the gamma ray mutagen applied produced high chili genetic diversity. The value of genetic similarity between control plants and mutant plants ranged from 0.7474 to 0.4874. UPGMA dendogram classified seven genotypes tested into three groups, the first group consisted of mutants R2U6 and R2U17, the second group was mutants R1U14 and R1U17, and the third group was mutants R2U8, mutants R2U2 and control plants. The finding of this research can be used as a basic selection of genetic material for chili’s breeding in the future.
Sosialisasi Budidaya Cabai Merah dan Kondisi Tanah di Desa Teluk Piyai Pesisir Kecamatan Kubu Kabupaten Rokan Hilir Zafitra, Zafitra; Khoiri, M. Amrul; Silvina, Fetmi; Irfandri, Irfandri; Wahyudi, Eko; Irawan, Joni; Ali, Muhammad; Nurhidayah, T.; Trizayuni, Riska; Ibrahim, Roy; Mulyadi, Dedi
Journal of Rural and Urban Community Empowerment Vol. 6 No. 2 (2025): April
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jruce.6.2.136-140

Abstract

Tujuan dari kegiatan pengabdian masyarakat ini yaitu untuk meningkatkan pengetahuan masyarakat tentang budidaya tanaman cabai merah dan kondisi tanah di Teluk Piyai Pesisir. Pengabdian telah dilakukan pada bulan Agustus 2024. Pengabdian dilakukan dengan metode diskusi dan praktik lapangan. Dari hasil diskusi dan praktik lapangan diperoleh permasalahan yang dominan pada petani adalah adalah kondisi tanah yang mengandung phyrite dan tergenang pasang air laut, pengolahan tanah, serta masalah yang tidak terlalu signifikan adalah hama dan penyakit serta masalah panen hingga penjualan cabai merah. Dari hasil diskusi direkomendasikan untuk kedepannya agar petani untuk dapat melakukan pemupukan yang sesuai dosis anjuran dan pada pengolahan tanah untuk tidak terlalu dalam saat mencangkul atau mengolah tanah menggunakan traktor pada kedalaman lebih dari 40 cm sudah terdapat kandungan phyrite yang dapat mengganggu pertumbuhan tanaman dan kondisi tergenang kandungan phyirite lebih mudah tersebar dan larut di permukaan tanah
Identifikasi dan Analisis Kejadian Penyakit Serta Tingkat Keparahan Penyakit Pada Tanaman Mentimun (Cucumis sativus L.) Menggunakan Software Plantix di Kabupaten Kampar Provinsi Riau Mulyadi, Dedi; Ibrahim, Roy; Elfianis, Rita
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2025): March
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i1.14741

Abstract

This study aims to identify the causes of disease and disease symptoms using plantix software, and to determine the incidence of disease and disease resistance that infect cucumber plants in Kampar Regency. This study used a survey method with direct observation in 3 locations and the data obtained in the field were disease symptoms, the number of affected plants, the percentage and intensity of disease attack. Data analysis was carried out at the Laboratory of Plant Disease, Faculty of Agriculture, Riau University. The results showed that (1) the results of identification carried out using Plantix software found that the pathogen that infects cucumber plants in Kampar Regency is Cucumber green mottle mosaic virus (CGMMV) with symptoms of light green or yellow spots and veins clearly visible on young leaves, yellowing leaves, wrinkles, and changes in shape, plant growth is inhibited, the fruit has spots, stripes or a distorted shape (malformation). (2) The highest disease incidence was found in Kampar Subdistrict, 71.16% with disease intensity of 46.95%, followed by Mine Subdistrict with disease incidence of 55.45% and disease intensity of 34.07%, while disease incidence in North Kampar Subdistrict was 37.25% with disease intensity of 18.79%.
Pemberdayaan Petani Hortikultura melalui Sosialisasi dan Pendampingan Budidaya Cabai Varietas Neno Tahan Virus di Desa Benai Kecil, Kabupaten Kuantan Singingi Yunandra; Julita Saidi; Dian Rakhmad; Dedi Mulyadi; Alltop Amri Ya Habib; Rizki Oktavian; Elisa Apriliani; M. Joehari Jamili
JURPIKAT Vol 7 No 1 (2026): 7.1 2026
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/jurpikat.v7i1.2807

Abstract

National chili demand continues to increase, but productivity at the farmer level remains low due to attacks by the whitefly (Bemisia tabaci Genn.) virus. Benai Kecil Village, Benai District, Kuantan Singingi Regency, Riau, is a horticultural center with low chili productivity (4–5 tons/ha), far below the potential of commonly used superior varieties. This community service activity aims to improve farmers' knowledge and skills in chili cultivation by initiating the use of the superior virus-resistant Neno variety. The program was implemented for five months with stages of socialization, field practice, mentoring, monitoring, evaluation, and follow-up. The results of the activity indicated that farmers improved their understanding and skills in chili cultivation techniques, including seeding, soil cultivation, maintenance, and pest and disease control. The evaluation showed that the Neno chili variety has the potential to be developed because it is adaptive to dynamic climate change and effectively reduces the risk of curly virus attacks. In addition, the use of virus-resistant varieties can also support environmentally friendly pest and disease control. This program demonstrates that the development of the superior Neno variety has the potential to be a sustainable strategy for increasing chili production while simultaneously strengthening food security and farmer welfare.
Sosialisasi Budidaya dan Pencegahan Serangan Virus Gemini pada Tanaman Cabai di Gapoktan Beken Jaya Desa Benai Keci Kabupaten Kuantan Singingi Yunandra Yunandra; Julita Saidi; Dian Rakhmad; Dedi Mulyadi; Altop Amri Ya Habib; Rizki Oktavian; Elisa Apriliani; M. Joehari Jamili
Unri Conference Series: Community Engagement Vol 7 (2025): Seminar Nasional Pemberdayaan Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/unricsce.7.87-93

Abstract

This community service program aims to improve farmers' knowledge and skills in cultivating chili plants and preventing geminivirus infection, a major constraint in production. The activity was carried out through outreach activities covering the stages of land cultivation, virus infection prevention techniques, whitefly population control as a vector, land clearing of weeds that are hosts of geminivirus, sanitation of infected plants, and proper pesticide use. In addition, participants were also introduced to the use of chili varieties resistant to the yellow geminivirus as an alternative sustainable solution. The results of the activity showed an increase in farmers' understanding of healthy cultivation strategies and integrated pest control, with an average score increasing from 45% to 85%, with the vector control aspect increasing from 30% to 90%. This outreach is expected to reduce the level of virus infection and increase chili productivity.
PENGARUH SKARIFIKASI TERHADAP PERKECAMBAHAN BENIH KOPI LIBERIKA (Coffea liberica Bull ex Hiern) Rita Elfianis; Dinda Andani Putri; Dedi Mulyadi
AGROTEK: Jurnal Ilmiah Ilmu Pertanian Vol 10, No 2 (2026): September
Publisher : Percetakan Umi Toaha Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/agrotek.v10i2.1367

Abstract

Liberica coffee seeds germinate under optimum conditions for 8-12 weeks because Liberica coffee seeds have an exocarp and undergo physical dormancy. Breaking physical dormancy can be done by means of physical and chemical scarification. The purpose of this study was to obtain the best scarification technique for the germination of Liberica coffee seeds. This research method used was an experimental methode with a completely randomized design (CRD), which scarification technique consists of 4 levels, namely P0 = Whole coffee seeds / without treatment (control), P1 = Coffee seeds are sanded on the entire skin, P2 = Coffee seeds are given an opening with nail scissors on the skin, P3 = Coffee seeds are peeled all parts of the skin. Each treatment was repeated five times, resulting in 20 experimental units. Each unit used 100 coffee seeds, with a total of  2.000 seeds. Parameters observed were time to sprout, germination, vigor index, and maximum growth potential. The results of the study showed that the best scarification technique for germination of Liberica coffee seeds was the treatment of coffee seeds peeled all over the skin, where this treatment gave the highest results on the parameters of germination, time to sprout, vigor index, and maximum growth potential.
Co-Authors Alltop Amri Ya Habib Altop Amri Ya Habib Amrul Khoiri Apriliani, Elisa Dian Rakhmad Dinda Andani Putri Eko Wahyudi Elfianis, Rita Fetmi Silvina Irfandri Joni Irawan, Joni Julita, Julita M. Joehari Jamili MUHAMMAD ALI Nurhidayah, T. Rita Elfianis Rizki Oktavian Rosmaina Rosmaina Roy Ibrahim Trizayuni, Riska Yunandra Zafitra Zulfahmi Zulfahmi