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All Journal Jurnal Fitopatologi Indonesia AGROEKOTEKNOLOGI JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Indonesian Journal of Agricultural Research Jurnal Entomologi Indonesia JCRS (Journal of Community Research and Service) Agro Bali: Agricultural Journal Journal Of Human And Education (JAHE) Contributions of Central Research Institute for Agriculture GMPI Conference Series
Irda Safni
Department Of Agrotechnology, Faculty Of Agriculture, Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Physics Social Sciences Veterinary Other

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Peningkatan Kemampuan Tentang Penyakit Kelapa Sawit Akibat Serangn Patogen Ganoderma boninense Melalui Kegiatan Penyuluhan Lapangan Lisnawita Lisnawita; Wismaroh Sanniwati Saragih; Ahmad Rafiqi Tantawi; Hamidah Hanum; Suzanna Fitriani Sitepu; Irda Safni; Khairunnisa Lubis
Journal Of Human And Education (JAHE) Vol. 4 No. 1 (2024): Journal Of Human And Education (JAHE)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jh.v4i1.680

Abstract

Penyakit yang sangat penting di perkebunan kelapa sawit adalah busuk pangkal batang yang disebabkan Ganoderma boninense dan merugikan secara ekonomi hampir 43%. Kejadian penyakit akibat G. boninense di perkebunan rakyat telah berdampak terhadap penurunan produksi dan tingkat pendapatan petani juga menurun. Pelaksanaan pengabdian kepada masyarakat dilakukan di desa Tebing Syahbandar Kabupaten Serdang Bedagai Provinsi Sumatera Utara. Tujuan pengabdian untuk meningkatkan pengetahuan kemampuan masyarakat tentang penyakit kelapa sawit yang disebabkan G. boninense. Target yang diharapkan adalah masyarakat mampu mengidentifikasi serangan sejak dini sehingga metode pengendalian dengan cara membumbun atau menggunakan bibit unggultahan G. boninense. Metode pengabdian kepada masyarakat dilakukan melalui ceramah, diskusi, dan kunjungan langsung di perkebunan rakyat. Pelaksanaan pengabdian melalui koordinasi dengan Dinas Pertanian Kabupaten Serdang Bedagai, penyuluh lapangan, serta masyarakat pemilik perkebunan kelapa sawit. Pelaksanaan ceramah dan diskusi bersama tim dosen dan mahasiswa dengan sasaran petani kebun kelapa sawit rakyat.
Prevalence and Incidence of Bacterial Wilt Disease (Ralstonia syzygii subsp. indonesiensis) on Tomato in Simpang Empat District Karo Siagian, Debi Candra; Safni, Irda; Lisnawita
Indonesian Journal of Agricultural Research Vol. 5 No. 3 (2022): InJAR, Vol. 5, No. 3, November 2022
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/injar.v5i03.9911

Abstract

The major disease known as bacterial wilt, which affects tomato plants in Indonesia, is brought on by Ralstonia syzygii subsp. indonesiensis. In Simpang Empat District, Karo Regency, Indonesia, R. syzygii subsp. indonesiensis causes bacterial withery in tomato plants. The purpose of this study is to map its spread. This study is an experimental one that used the survey method to determine the prevalence of disease, the incidence of disease, and the pathogenic isolation of tomato plants at nine different locations throughout Simpang Empat District. The pathogen was isolated from the sample and identified in the lab as R. syzygii subsp. indonesiensis, according to the results. The outcome of the presence of bacterial wilt brought on by R. syzygii subsp. indonesiensis bacteria with various illness occurrences. At a proportion of disease incidence of 57.07%, Ndokum Siroga Location 1 in the community experienced the most disease.
Salicylic Acid Accumulation in Tomato Root Induced by Endopytic Bacteria and Exogenous Salicylic Acid Response to Ralstonia syzygii subsp. indonesiensis Infection Nababan, Triwanto; Lisnawita, Lisnawita; Safni, Irda
Contributions of Central Research Institute for Agriculture Vol. 18 No. 4 (2024): October: Agriculture and related sciences
Publisher : Central Research Institute For Agriculture

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Abstract

Ralstonia syzygii subsp. indonesiensis causes bacterial wilt disease is a soil-borne pathogen that causes serious damage and major losses in tomato production. To overcome this, the use of Arthrobacter sp. and Bacillus thuringiensis as biological elicitors and salicylic acid as a chemical elicitor were teste their capacity to induce tomato plants to become resistant. Experiments were carried out on the susceptible tomato cultivar "Servo F1" in sterilized soil to test the elicitor's effectiveness in triggering plant defense mechanisms in response to salicylic acid accumulation in afflicted roots. Arthrobacter sp. and salicylic acid treatments significantly reduced the disease severity due to bacterial wilt compared to control treatment within three weeks after inoculation. Tomato with once week application intensity was also better than every two weeks application intensity. The AUDPC value showed by Arthrobacter sp. was 1449.7 with an application intensity every two weeks and 148 with an application intensity once a week compared to control with an AUDPC value of 4962.9. Furthermore, endophytic bacteria and salicylic acid can induce salicylic acid accumulation in pathogen-inoculated tomato roots. The results show that the elicitor is either biological or chemicals play an important role as inducers of plant defenses, thereby reducing bacterial wilt disease.
MORPHOLOGY VARIATION OF METARHIZIUM ANISOPLIAE FROM SOIL IN NORTH SUMATRA AREAS Sirait, Desianty Dona Normalisa; Tobing, Maryani Cyccu; Safni, Irda
Journal of Community Research and Service Vol 1, No 2: July 2017
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jcrs.v1i2.9627

Abstract

AbstractMetarhizium anisopliae is an important entomopathogenic fungus that mainly used for biological control. Isolates of M. anisopliae extracted from soil from 15 oil palm plantations located in several districts on the Province of North Sumatra, Indonesia have been investigated to identify their morphological diversity. The morphology of assessed fungi was constructed in the the form of conidia, conidia size, color and shape colony and growth diameter of the 15 isolates. All of conidia forms showed cylindrical shape and string together. The length/width (μm) ratio of conidia size was minimum 2,16 and maximum 3,54. The highest growth rate isolates were found in M3 (Bandar Selamat) and M12 (Mancang) treatment and the lowest rate was M11 (Teluk Parit Kaca) treatment. The color of colonies were varied among the isolates. They were greenish yellow, dark green, yellowish and showing zonation/no zonation.Keywords : Metarhizium anisopliae, biological character, morphological diversity
Detection and identification of fungi causing strawberry wilt disease in North Sumatra, Indonesia Safni, Irda; Simanjuntak, Cadrak Perdamenta
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 1 (2025): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLANT PE
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.12532-43

Abstract

Strawberry (Fragaria sp.) is primarily grown in temperate and some subtropical countries. With the expansion of fruit commodities in Indonesia, including the introduction of foreign cultivar, strawberry has been increasingly cultivated locally. In North Sumatra, strawberry cultivation, mainly for agritourism, is concentrated in Karo Regency, Berastagi District. This study aimed to detect and identify fungi responsible for wilt disease in strawberry plants across several areas of Berastagi, North Sumatra. This research was conducted from July 2022 to May 2023 at the Plant Disease Laboratory, Faculty of Agriculture, Universitas Sumatera Utara. The study followed Koch’s postulates: the pathogen was isolated and purified from symptomatic plants, then inoculated into healthy plants. Infected plants exhibiting the same symptoms as the initial sample were subsequently re-isolated, purified, and identified at the molecular level. The results confirmed that the causal agent of wilt disease in Daulu (Rini Colia Strawberry, Esy Azera Strawberry) and Dolat Raya (Sonakmalela Strawberry, Alea Strawberry, Sembiring Gurky Strawberry) was Fusarium oxysporum.
Analysis of The Relationship of Wind Speed and Rainfall on the Development of Coffee Leaf Rust (Hemileia Vastatrix B. & Br.) on Sipirok Arabica Coffee Plants in South Tapanuli District, Indonesia Guntoro, Guntoro; Lisnawita, Lisnawita; Tantawi, A. Rafiqi; Safni, Irda
GMPI Conference Series Vol 3 (2024): The 10th Asian Academic Society International Conference (AASIC)
Publisher : Gemilang Maju Publikasi Ilmiah (GMPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53889/gmpics.v3.424

Abstract

Coffee is one of the agricultural commodities that is a priority for development by the Indonesian government because it has high economic value. Sipirok coffee is a mainstay Arabica coffee from the Highlands, South Tapanuli dictrict, Sumatera Utara - Indonesia. During its cultivation in the field, many problems were discovered, including coffee leaf rust disease caused by the fungus Hemileia vastatrix. This research aims to analysis the relationship between wind speed and rainfall on the development of coffee leaf rust disease (H.vastatrix) on Arabica coffee plants in South Tapanuli Regency, North Sumatere Province. The research was carried out at the community coffee planting center in the Sipirok Highlands, in Sampean Village, Sipirok District, South Tapanuli Regency with coordinates 1.64'N99.26'E with an altitude of 900 meters above sea level. The research was carried out by observing weather elements with a portable weather measuring device, capturing H. vastatrix fungal spores with a modified Kyosawa type spore capture device, and observing the severity of H. vastatrix coffee leaf rust disease. The collected data was analysed using correlation and regression analysis with SPSS Version 25. The results showed that wind speed and rainfall had a very positive effect on conidium capture and disease severity. Accordingly, there is a relationship between the elements of wind speed and rainfall on the development of coffee leaf rust disease (Hemileia broadatrix B. Br.).
Induksi Ketahanan Tanaman Tomat terhadap Ralstonia syzygii subsp. indonesiensis Menggunakan Bakteri Endofit dan Asam Salisilat : Induction of Resistance in Tomato Plants Against Ralstonia syzygii subsp. indonesiensis Using Endophytic Bacteria and Salicylic Acid Nababan, Triwanto; Lisnawita, Lisnawita; Safni, Irda
Jurnal Fitopatologi Indonesia Vol 20 No 6 (2024): November 2024 - IN PROGRESS
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14692/jfi.20.6.263-275

Abstract

Patogen Ralstonia syzygii subsp. indonesiensis adalah penyebab penyakit layu bakteri pada tanaman tomat. Patogen ini sulit dikendalikan karena kemampuannya bertahan dalam sisa bahan inang, tanah, dan dapat menyebar dengan mudah melalui aliran air, serta menginfeksi jaringan tanaman secara sistemik. Belum ada pestisida kimia yang efektif untuk mengendalikan patogen layu bakteri. Oleh karena itu, alternatif pengendalian yang dipilih ialah dengan menggunakan bakteri endofit dan asam salisilat. Dua jenis bakteri endofit, yaitu Arthrobacter sp. dan Bacillus thuringiensis, serta asam salisilat digunakan dalam penelitian secara tunggal ataupun kombinasi untuk mengevaluasi potensinya dalam menginduksi ketahanan tanaman tomat dalam menekan penyakit layu bakteri R. syzygii subsp. indonesiensis. Penelitian dilakukan dengan rancangan acak lengkap non faktorial dengan 14 perlakuan terdiri atas perlakuan tunggal dan kombinasi. Setiap perlakuan terdiri atas tiga unit tanaman dan tiga ulangan. Hasil penelitian menunjukkan bahwa kombinasi Arthrobacter sp. dan asam salisilat yang diaplikasikan satu kali seminggu (ABAS1) merupakan perlakuan yang paling efektif untuk menginduksi ketahanan tomat. Hal ini tampak pada periode inkubasi yang paling lama, rendahnya insidensi dan keparahan penyakit, meningkatnya aktivitas enzim peroksidase, polifenoloksidase, dan jaringan xilem tidak dominan terkolonisasi patogen pada pengamatan histopatologi.
Co-Authors AHMAD RAFIQI TANTAWI Ameilia Zuliyanti Siregar annisa audina purba Cici Indriani Dalimunthe Darma Bakti Desianty Dona Normalisa Sirait Faqih Aulia Rahman Guntoro Hamidah Hanum Hasanuddin Hasanuddin I Nyoman Adi Putra Irma Handayani Sihombing Irna Masyitah Khairunnisa Lubis Lahmuddin Lubis Lisnawita Lisnawita Lisnawita Lisnawita Lisnawita Lisnawita Mahyar Dian Sari marheni marheni Maryani Cyccu Tobing maryani cyccu tobing Maryani Cyccu Tobing Masyitah, Irna Mukhtar Iskandar Pinem NABABAN, TRIWANTO Nahrisa Rahmadhani Neny Yanti Siregar pebi nurhandani Saragih, Wismaroh Sanniwati Setia Sari Girsang Siagian, Debi Candra Simanjuntak, Cadrak Perdamenta Sirait, Desianty Dona Normalisa Sitepu, Suzanna F Suzanna Fitriani Sitepu Suzanna Fitriany Sitepu, Suzanna Fitriany Tantawi, A. Rafiqi Wahidah, Nurni Widya Antastia winda arthadinatha lingga