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All Journal Jurnal Fitopatologi Indonesia Agrikultura Jurnal Natur Indonesia Microbiology Indonesia AGRIVITA, Journal of Agricultural Science Jurnal Agroekoteknologi Jurnal Agro Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Terapan Abdimas Jurnal Dinamika Pengabdian (JDP) JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Jurnal Agro Industri Perkebunan Journal of Applied Agricultural Science and Technology JURNAL AGROHITA AGROMIX Logista: Jurnal Ilmiah Pengabdian Kepada Masyarakat Jurnal Hilirisasi IPTEKS (JHI) Buletin Ilmiah Nagari Membangun International Journal of Agricultural Sciences Akta Agrosia Jurnal Abdi Insani Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Jurnal Abdi Masyarakat Indonesia Prosiding Konferensi Nasional PKM-CSR Prosiding Seminar Nasional Pengabdian Kepada Masyarakat National Multidisciplinary Sciences Buletin Dharmas Andalas Prosiding Seminar Nasional Pengabdian Masyarakat Seminar Nasional Pariwisata dan Kewirausahaan (SNPK)
Yulmira Yanti
Universitas Andalas, Padang
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Journal : Jurnal Agro

 1 
Formula padat Bacillus cereus STRAIN TLE1.1 untuk pengendalian penyakit busuk pangkal batang (Sclerotium rolfsii) pada tanaman tomat Yulmira Yanti; Hasmiandy Hamid; Reflin Reflin; Yaherwandi Yaherwandi; Febri Yani Chrismont
Jurnal Agro Vol 8, No 2 (2021)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/14679

Abstract

Penyakit utama tanaman tomat yaitu busuk pangkal batang yang disebabkan oleh Sclerotium rolfsii dapat menimbulkan kerugian mencapai 80-100%. Tujuan penelitian yaitu untuk mendapatkan formula padat Bacillus cereus strain TLE1.1 yang efektif untuk pengendalian penyakit busuk pangkal batang pada tanaman tomat. Penelitian bersifat eksperimen dengan mengamati kemampuan formula padat B.cereus strain TLE1.1 dalam pengendalian penyakit busuk pangkal batang dengan Rancangan Acak Lengkap yang terdiri atas 9 perlakuan dan 3 ulangan. Perlakuan terdiri atas kombinasi bahan pembawa formula padat yang terdiri atas limbah padat ampas tebu, ampas tahu dan tongkol jagung, fungisida serta kontrol. Masing-masing formula padat B. cereus strain TLE1.1 diintroduksi pada benih dan bibit tomat. Hasil penelitian menunjukkan bahwa hampir semua formula mampu menekan penyakit busuk pangkal batang tanaman tomat. Formula terbaik dalam menurunkan penyakit busuk pangkal batang pada tanaman yaitu formula ampas tahu dan ampas tahu + tongkol jagung. Main disease of tomato plant, namely stem rot caused by Sclerotium rolfsii which can cause losses up to 80-100%. The aim of the study was to obtain a solid formula of Bacillus cereus strain TLE1.1 which was effective for controlling stem rot disease in tomato plant. This research was an experimental study to know the ability of the solid formula of B. cereus strain TLE1.1 in controlling stem rot disease which was carried out in a completely randomized design consisting of 9 treatments and 3 replications. The treatment consisted of a combination of solid formula carriers consisting of sugarcane solid waste, tofu dreg and corncob, fungicides and controls. Each solid formula of B. cereus strain TLE1.1 was introduced into tomato seeds and seedlings. The results showed that almost all of the formulas were able to suppress stem base disease of tomato plants. The best formula that reduced stem rot in plants were the tofu dreg and tofu dreg + corncob formula.
Penapisan isolat rizobakteri indigenos untuk pengendalian (Ganoderma boninense) di pre nursery kelapa sawit (Elaeis guineensis Jacq.) yulmira yanti; Imam Rifai; Yogie Aditya Pratama; Muhammad Ihsan Harahap
Jurnal Agro Vol 6, No 2 (2019)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/4665

Abstract

Rizobakteri merupakan kelompok bakteri yang aktif mengkolonisasi akar tanaman, meningkatkan pertumbuhan dan mengendalikan patogen tanaman. Penelitian ini bertujuan untuk memperoleh isolat rizobakteri indigenous  terbaik dalam meningkatkan pertumbuhan kelapa sawit dan mengendalikan penyakit busuk pangkal batang di pre-nursery kelapa sawit secara in planta serta karakterisasi kemampuan antagonisnya secara in vitro. Penelitian bersifat eksperimental terdiri atas 3 tahap dengan menggunakan Rancangan Acak Lengkap (RAL): (1) Isolasi dan karakterisasi isolat rizobakteri indigenous  di Kabupaten Pasaman Barat, (2) Pengujian isolat rizobakteri indigenous  (RBI) sebagai plant growth promoting rihzobacteria (PGPR), dan untuk pengendalian G.boninense di pre-nursery kelapa sawit terdiri dari 29 perlakuan (27 isolat RBI, tanpa inokulasi G. boninense sebagai kontrol positif, dan inokulasi G. boninense sebagai kontrol negatif) dengan masing-masing 5 ulangan, serta (3) Pengujian aktivitas antagonisme isolat RBI terhadap G. boninense. Data dianalisis dengan sidik ragam, apabila berbeda nyata dilanjutkan dengan uji Least Significance Different (LSD) pada taraf 5%. Hasil penelitian menunjukkan diperoleh tiga isolat terbaik (R10 2.2, R9 2.1, dan R10 2.3) yang mampu meningkatkan pertumbuhan kelapa sawit dan menekan perkembangan penyakit busuk pangkal batang G.boninense secara in planta dan in vitro.ABSTRACTRhizobacteria is a group of bacteria that actively colonize plant roots, increase growth and control plant pathogen. The objective of the research was to obtain indigenous rhizobacteria isolate (RBI) to increase growth and control basal stem rot on oil palm seedlings in in planta and characterize of antagonistic ability in in vitro. Experimental research consisted of 3 stages by using Completely Randomized Design (CRD): (1) Isolation of indigenous rhizobacteria in West Pasaman region, (2) Indigenous rhizobacteria isolate testing as a plant growth promoting rhizobacteria (PGPR) and to control of G. boninense on pre nursery of oil palm consisted of 29 treatments (27 RBI isolates, without G. boninense inoculation as positive control, and G. boninense inoculation as negative control) with 5 replications each. (3) Testing of RBI isolate antagonism activity towards G. boninense. Data were analyzed by variance, if the result significantly different, it was continued by using Least Significance Different (LSD) at 5% level. The results showed that best three isolates (R10 2.2, R9 2.1 and R10 2.3) were able to increase growth of palm oil and to suppress the development of G.boninense basal stem rot in in planta and in in vitro.
Konsorsium Bacillus spp. Untuk pengendalian penyakit rebah kecambah dan busuk batang (Sclerotium rolfsii) pada tanaman Cabai Yulmira Yanti; Hasmiandy Hamid; Yaherwandi Yaherwandi; Nurbailis Nurbailis
Jurnal Agro Vol 9, No 2 (2022)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/17954

Abstract

Sclerotium rolfsii merupakan patogen tular tanah yang dapat menyebabkan kehilangan hasil hingga 75% pada tanaman cabai. Alternatif pengendalian ramah lingkungan bisa menggunakan agens hayati yaitu konsorsium bakteri endofit Bacillus spp. Penelitian bertujuan mendapatkan konsorsium Bacillus spp. terbaik untuk pengendalian rebah kecambah dan busuk pangkal batang yang disebabkan S. rolfsii pada tanaman cabai. Penelitian berupa eksperimen secara in vivo menggunakan Rancangan Acak Lengkap dengan tujuh perlakuan dan tiga ulangan yaitu : konsorsium A (B. toyonensis AGBE2.1 TL + B. thuringiensis SLBE2.3 BB), konsorsium B (B. toyonensis AGBE2.1 TL + B. cereus SLBE1.1 BB), konsorsium C (B. thuringiensis SLBE2.3 BB + B. cereus SLBE1.1 BB), konsorsium D (B. toyonensis AGBE2.1 TL + B. cereus SLBE1.1 BB + B. thuringiensis SLBE2.3 BB), Kontrol positif (tidak diberi S. rolfsii dan Bacillus spp.), Kontrol negatif (diinokulasikan S. rolfsii dan tidak diberi Bacillus spp.) dan Kontrol pembanding (fungisida Mankozeb). Peubah yang diamati yaitu perkembangan penyakit rebah kecambah dan busuk pangkal batang. Hasil penelitian menunjukkan konsorsium AGBE 2.1 TL+ SLBE 2.3 BB, konsorsium AGBE2.1 TL + SLBE1.1 BB dan konsorsium AGBE2.1 TL + SLBE1.1 BB + SLBE2.3 BB memiliki efektivitas 100% dalam mengendalikan penyakit rebah kecambah dan busuk pangkal batang.ABSTRACTSclerotium rolfsii is a soil-borne pathogen that can reduce yields up to 75% in chili plants. An alternative for environmentally friendly control can use biological agents, namely a consortium of endophytic bacteria Bacillus spp. The aim of the study was to obtain a consortium of Bacillus spp. best for controlling of damping off and stem rot caused by S. rolfsii in chili plants. The study was an in vivo experiment using a completely randomized design with seven treatments and three replications: consortium A (B. toyonensis AGBE2.1 TL + B. thuringiensis SLBE2.3 BB), consortium B (B. toyonensis AGBE2.1 TL + B. cereus SLBE1.1 BB), consortium C (B. thuringiensis SLBE2.3 BB + B. cereus SLBE1.1 BB), consortium D (B. toyonensis AGBE2.1 TL + B. cereus SLBE1.1 BB + B. thuringiensis SLBE2.3 BB), positive control (no S. rolfsii and Bacillus spp.), negative control (inoculated with S. rolfsii and no Bacillus spp.) and comparison control (Mankozeb fungicide). The results obtained that the consortium AGBE 2.1 TL+ SLBE 2.3 BB, the consortium AGBE2.1 TL + SLBE1 .1 BB and consortium AGBE2.1 TL + SLBE2.3 BB + B. cereus SLBE1.1 BB were 100% effective in suppressing developmental disease of damping off and stem rot caused by S. rolfsii. 
Penapisan aktinobakteria rhizosfer padi sebagai agens pengendali hayati Xanthomonas oryzae pv. oryzae pathogen penyebab penyakit hawar daun bakteri Muhammad Fadil; Yulmira Yanti; Ujang Khairul
Jurnal AGRO Vol 10, No 1 (2023)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/19798

Abstract

Bacterial leaf blight caused by X.o. pv. oryzae is an important disease of rice plants. Actinobacteria has potential as biological agents to control X.o. pv. oryzae because it has the ability to produce bioactive compounds. This study aimed to select actinobacteria isolates that can suppress the development of X.o. pv. oryzae and has the potential to stimulate the growth of rice plants in-planta, as well as to determine the ability of actinobacteria in producing enzymes that inhibit the development of X. oryzae pv. oryzae. The research consisted of four stages, namely: isolation, selection, characterization, and potential inhibition of actinobacterial isolates. A total of 30 isolates were successfully isolated from the rhizosphere of rice plants in three districts of West Sumatra, and as many as 25 isolates were successfully selected based on biosafety tests. The results of the in-planta test showed that 10 isolates had the ability to increase the growth and suppresed the development of bacterial leaf blight. The results of the antagonist test showed that 5 isolates inhibited of X.o. pv. oryzae by 11.66-29.66%. Five isolates were selected, namely: APRD 3I211, APRD 1I122APRP 2S121, APRP 1I121, APRP 3I212 wich capable of produce protease enzymes, cellulases, amylase, and secondary metabolites.ABSTRAK Penyakit hawar daun bakteri yang disebabkan oleh Xanthomonas oryzae. pv. oryzae merupakan penyakit penting tanaman padi. Aktinobakteria memiliki potensi sebagai agens hayati untuk mengendalikan X. oryzae. pv. oryzae karena memiliki kemampuan dalam menghasilkan senyawa bioaktif. Penelitian ini bertujuan untuk menyeleksi isolat aktinobakteria yang dapat menekan perkembangan X. oryzae. pv. oryzae dan memiliki potensi dalam memacu pertumbuhan tanaman padi secara in-planta, serta mengetahui kemampuan aktinobakteria dalam menghasilkan enzim penghambat perkembangan X. oryzae. pv. oryzae. Penelitian terdiri dari empat tahap, yaitu: isolasi, seleksi, karakterisasi, dan potensi daya hambat isolat aktinobakteria. Sebanyak 30 isolat berhasil diisolasi dari rizosfer tanaman padi di tiga Kabupaten Sumatera Barat, dan sebanyak 25 isolat berhasil diseleksi berdasarkan uji keamanan hayati. Hasil uji in-planta menunjukkan 10 isolat memiliki kemampuan dalam meningkatkan pertumbuhan dan menekan perkembangan hawar daun bakteri. Hasil uji antagonis menunjukkan 5 isolat menghasilkan penghambatan terhadap X. oryzae. pv. oryzae sebesar 11,66-29,66%. Lima isolat terpilih yaitu: APRD 3I211, APRD 1I122, APRP 2S121, APRP 1I121, APRP 3I212 terbukti mampu menghasilkan enzim protease, selulase, amilase, metabolit sekunder.
Pengaruh empat isolat Bacillus spp. untuk pertumbuhan tanaman padi dan peningkatan ketahanan terhadap serangan kepinding tanah (Scotinophara coarctata Fabricius.) Wibowo, Ilham; Yanti, Yulmira; Hamid, Hasmiandy; Yaherwandi, Yaherwandi
Jurnal AGRO Vol 11, No 1 (2024)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/34106

Abstract

Rice black bug (Scotinophara coarctata Fabricius) is an important pest of rice plants. An alternative control method involves utilizing biological agents from the genus Bacillus. The research aims to identify the effective Bacillus spp. isolates in enhancing the growth and resistance of rice plants against rice bug infestations. The experimental study employed a Completely Randomized Design (CRD) with five treatments: (1) B. cereus strain MRDKBTE 1.3, (2) B. subtilis strain MRTDUMBE 3.2.1, (3) B. cereus strain MRPLUMBE 1.3, (4) B. mycoides strain MRSNUMBE 2.2, and (5) Control, each with five replications. The results showed that B. cereus strain MRPLUMBE 1.3 increased plant height by 135.27 cm, and the number of tillers by 23.85, with fresh and dry weights of 0.8 grams and 0.09 grams, respectively. Furthermore, B. mycoides strain MRSNUMBE 2.2 reduced the number of eggs by 30.60 ± 2.70 eggs, with a hatching percentage of 74.46%, and an infestation intensity of 11.18%. Kepinding Tanah (Scotinophara coarctata Fabricius) merupakan hama penting tanaman padi. Alternatif pengendalian yang dapat dilakukan dengan pemanfaatan agens hayati dari genus Bacillus. Tujuan penelitian untuk mengidentifikasi isolat Bacillus spp. yang efektif dalam meningkatkan pertumbuhan dan ketahanan tanaman padi terhadap serangan kepinding tanah. Penelitian secara eksperimen menggunakan Rancangan Acak Lengkap (RAL) dengan 5 perlakuan yaitu : (1) B. cereus strain MRDKBTE 1.3, (2) B. subtilis strain MRTDUMBE 3.2.1, (3) B. cereus strain MRPLUMBE 1.3, (4) B. mycoides strain MRSNUMBE 2.2, dan (5) Kontrol dengan masing masing 5 ulangan. Hasil penelitian yang diperoleh B. cereus strain MRPLUMBE 1.3 meningkatkan pertumbuhan tanaman 135,27 cm, jumlah anakan 23,85 anakan, serta berat segar dan kering masing-masing sebesar 0,8 gram dan 0,09 gram. Selanjutnya, B. mycoides strain MRSNUMBE 2.2, dapat menurunkan jumlah telur 30,60 ± 2,70 telur, presentase telur yang menetas 74,46%, dengan intensitas serangan sebesar 11,18%.
Eksplorasi aktinobakteria indigenus untuk Pengendalian penyakit busuk tongkol oleh Fusarium verticillioides pada tanaman jagung Annisa, Tifla Fitri; Yanti, Yulmira; Nurbailis, Nurbailis
Jurnal AGRO Vol 11, No 2 (2024)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/39831

Abstract

Fusarium verticillioides is a fungus that causes cob rot disease in corn plants. Control of Fusarium verticilliodes by using biological agents that are antagonistic, namely actinobacteria. The research aims to obtain actinobacteria isolates that can control cab rot disease and increase corn growth. The research consisted of 3 stages, 1.) Isolation of indigenous actinobacteria and F.verticillioides. Variables observed were actinobacteria characteristics and biosafety test. 2.) Selection of indigenous actinobacteria to suppress the growth of fungus F. verticillioides. The observed variable is the percentage of inhibition. 3.) The ability of actinobacteria in controlling cob rot in corn plants with 12 treatments and 3 replications, 10 isolates (selection results of stage II), 1 positive control, and 1 negative control, arranged in a completely randomized design. The variables observed were disease development and plant growth. A total of 20 isolates of actinobacteria were obtained isolation results, and the results of biosafety tests obtained as many as 15 isolates of actinobacteria. Actinobacteria isolates that have the potential to suppress the growth of fungus F. verticillioides are actinobacterial isolates APPB BI7, APPB CS7, APPA BI6, APPA AS7, APBC AS7, APPB AS7, APBA AS7, ALKA AS7, APBB BI6, and ALKB AI7 with an inhibition of 62.22-68%. Actinobacteria isolates that have the potential in suppressing the development of cob rot disease and spurring the growth of corn corn plants are isolates with the code APPB BI7, APBB BI6, ALKB AI7, APPB CS7, APPB AS7, APPA AS7, APBA AS7, and APBC AS7. ABSTRAK Fusarium verticillioides merupakan jamur yang menyebabkan penyakit busuk tongkol pada tanaman jagung. Pengendalian Fusarium verticilliodes dengan menggunakan agensia hayati yang bersifat antagonis yaitu aktinobakteria. Penelitian bertujuan untuk mendapatkan isolat aktinobakteria yang dapat mengendalikan penyakit busuk tongkol serta meningkatkan pertumbuhan jagung. Penelitian terdiri atas 3 tahap, 1.) Isolasi aktinobakteria indigenus dan F.verticillioides. Variabel yang diamati adalah karakteristik aktinobakteria dan uji keamanan hayati. 2.) Seleksi aktinobakteria indigenus untuk menekan pertumbuhan jamur F. verticillioides. Variabel yang diamati adalah persentase daya hambat. 3.) Kemampuan aktinobakteria dalam mengendalikan busuk tongkol pada tanaman jagung dengan 12 perlakuan dan 3 ulangan, 10 isolat (hasil seleksi tahap I dan II), 1 kontrol positif, dan 1 kontrol negatif, disusun dengan Rancangan Acak Lengkap. Variabel yang diamati adalah perkembangan penyakit dan pertumbuhan tanaman. Diperoleh 20 isolat aktinobakteria hasil isolasi, dan hasil uji keamanan hayati diperoleh sebanyak 15 isolat aktinobakteria. Isolat aktinobakteria yang berpotensi dalam menekan pertumbuhan jamur F. verticillioides yaitu isolat aktinobakteria APPB BI7, APPB CS7, APPA BI6, APPA AS7, APBC AS7, APPB AS7, APBA AS7, ALKA AS7, APBB BI6, dan ALKB AI7 dengan daya hambat 62,22-68,06%. Isolat aktinobakteria yang berpotensi dalam menekan perkembangan penyakit busuk tongkol dan memacu pertumbuhan tanaman jagung adalah isolat dengan kode APPB BI7, APBB BI6, ALKB AI7, APPB CS7, APPB AS7, APPA AS7, APBA AS7, dan APBC AS7.
Pengaruh empat isolat Bacillus spp. untuk pertumbuhan tanaman padi dan peningkatan ketahanan terhadap serangan kepinding tanah (Scotinophara coarctata Fabricius.) Wibowo, Ilham; Yanti, Yulmira; Hamid, Hasmiandy; Yaherwandi, Yaherwandi
Jurnal AGRO Vol. 11 No. 1 (2024)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/34106

Abstract

Rice black bug (Scotinophara coarctata Fabricius) is an important pest of rice plants. An alternative control method involves utilizing biological agents from the genus Bacillus. The research aims to identify the effective Bacillus spp. isolates in enhancing the growth and resistance of rice plants against rice bug infestations. The experimental study employed a Completely Randomized Design (CRD) with five treatments: (1) B. cereus strain MRDKBTE 1.3, (2) B. subtilis strain MRTDUMBE 3.2.1, (3) B. cereus strain MRPLUMBE 1.3, (4) B. mycoides strain MRSNUMBE 2.2, and (5) Control, each with five replications. The results showed that B. cereus strain MRPLUMBE 1.3 increased plant height by 135.27 cm, and the number of tillers by 23.85, with fresh and dry weights of 0.8 grams and 0.09 grams, respectively. Furthermore, B. mycoides strain MRSNUMBE 2.2 reduced the number of eggs by 30.60 ± 2.70 eggs, with a hatching percentage of 74.46%, and an infestation intensity of 11.18%. Kepinding Tanah (Scotinophara coarctata Fabricius) merupakan hama penting tanaman padi. Alternatif pengendalian yang dapat dilakukan dengan pemanfaatan agens hayati dari genus Bacillus. Tujuan penelitian untuk mengidentifikasi isolat Bacillus spp. yang efektif dalam meningkatkan pertumbuhan dan ketahanan tanaman padi terhadap serangan kepinding tanah. Penelitian secara eksperimen menggunakan Rancangan Acak Lengkap (RAL) dengan 5 perlakuan yaitu : (1) B. cereus strain MRDKBTE 1.3, (2) B. subtilis strain MRTDUMBE 3.2.1, (3) B. cereus strain MRPLUMBE 1.3, (4) B. mycoides strain MRSNUMBE 2.2, dan (5) Kontrol dengan masing masing 5 ulangan. Hasil penelitian yang diperoleh B. cereus strain MRPLUMBE 1.3 meningkatkan pertumbuhan tanaman 135,27 cm, jumlah anakan 23,85 anakan, serta berat segar dan kering masing-masing sebesar 0,8 gram dan 0,09 gram. Selanjutnya, B. mycoides strain MRSNUMBE 2.2, dapat menurunkan jumlah telur 30,60 ± 2,70 telur, presentase telur yang menetas 74,46%, dengan intensitas serangan sebesar 11,18%.
Eksplorasi aktinobakteria indigenus untuk Pengendalian penyakit busuk tongkol oleh Fusarium verticillioides pada tanaman jagung Annisa, Tifla Fitri; Yanti, Yulmira; Nurbailis, Nurbailis
Jurnal AGRO Vol. 11 No. 2 (2024)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/39831

Abstract

Fusarium verticillioides is a fungus that causes cob rot disease in corn plants. Control of Fusarium verticilliodes by using biological agents that are antagonistic, namely actinobacteria. The research aims to obtain actinobacteria isolates that can control cab rot disease and increase corn growth. The research consisted of 3 stages, 1.) Isolation of indigenous actinobacteria and F.verticillioides. Variables observed were actinobacteria characteristics and biosafety test. 2.) Selection of indigenous actinobacteria to suppress the growth of fungus F. verticillioides. The observed variable is the percentage of inhibition. 3.) The ability of actinobacteria in controlling cob rot in corn plants with 12 treatments and 3 replications, 10 isolates (selection results of stage II), 1 positive control, and 1 negative control, arranged in a completely randomized design. The variables observed were disease development and plant growth. A total of 20 isolates of actinobacteria were obtained isolation results, and the results of biosafety tests obtained as many as 15 isolates of actinobacteria. Actinobacteria isolates that have the potential to suppress the growth of fungus F. verticillioides are actinobacterial isolates APPB BI7, APPB CS7, APPA BI6, APPA AS7, APBC AS7, APPB AS7, APBA AS7, ALKA AS7, APBB BI6, and ALKB AI7 with an inhibition of 62.22-68%. Actinobacteria isolates that have the potential in suppressing the development of cob rot disease and spurring the growth of corn corn plants are isolates with the code APPB BI7, APBB BI6, ALKB AI7, APPB CS7, APPB AS7, APPA AS7, APBA AS7, and APBC AS7. ABSTRAK Fusarium verticillioides merupakan jamur yang menyebabkan penyakit busuk tongkol pada tanaman jagung. Pengendalian Fusarium verticilliodes dengan menggunakan agensia hayati yang bersifat antagonis yaitu aktinobakteria. Penelitian bertujuan untuk mendapatkan isolat aktinobakteria yang dapat mengendalikan penyakit busuk tongkol serta meningkatkan pertumbuhan jagung. Penelitian terdiri atas 3 tahap, 1.) Isolasi aktinobakteria indigenus dan F.verticillioides. Variabel yang diamati adalah karakteristik aktinobakteria dan uji keamanan hayati. 2.) Seleksi aktinobakteria indigenus untuk menekan pertumbuhan jamur F. verticillioides. Variabel yang diamati adalah persentase daya hambat. 3.) Kemampuan aktinobakteria dalam mengendalikan busuk tongkol pada tanaman jagung dengan 12 perlakuan dan 3 ulangan, 10 isolat (hasil seleksi tahap I dan II), 1 kontrol positif, dan 1 kontrol negatif, disusun dengan Rancangan Acak Lengkap. Variabel yang diamati adalah perkembangan penyakit dan pertumbuhan tanaman. Diperoleh 20 isolat aktinobakteria hasil isolasi, dan hasil uji keamanan hayati diperoleh sebanyak 15 isolat aktinobakteria. Isolat aktinobakteria yang berpotensi dalam menekan pertumbuhan jamur F. verticillioides yaitu isolat aktinobakteria APPB BI7, APPB CS7, APPA BI6, APPA AS7, APBC AS7, APPB AS7, APBA AS7, ALKA AS7, APBB BI6, dan ALKB AI7 dengan daya hambat 62,22-68,06%. Isolat aktinobakteria yang berpotensi dalam menekan perkembangan penyakit busuk tongkol dan memacu pertumbuhan tanaman jagung adalah isolat dengan kode APPB BI7, APBB BI6, ALKB AI7, APPB CS7, APPB AS7, APPA AS7, APBA AS7, dan APBC AS7.
Co-Authors ', Mardinus . Mansyurdin . Reflinaldon Afrika Diana Ahdaniah , Khomisatul Ananda, Alwi Annisa, Tifla Fitri Annisya Diadinni Arifal, Fahkrul Armansyah Armansyah Arnetti Arnetti Arnetti Arnetti, Arnetti Astri Permata Sari Auzar SYARIEF Auzar Syarif Baehaqi Darnetty Darnetty Dewi Suhalita Eka Candra Lina Eri Sulyanti Fatma Andria Wahyuni Febri Yani Chrismont Febriyani, Ellsa Indah Fhigo, Lucky Fikri, Imam Ge Gatra Gova Capatagi Gliceri Yumidiona Haliatur Rahma, Haliatur Hasmiandy Hamid Hasmiandy Hamid Hermeria, Noveriza Ichlasul Farhan Nouvensi Ilham Wibowo Imam Rifai Imam Rifai Indra Dwipa Intan Sari Pasaribu Intan Sari Pasaribu Irfan Suliansyah Irwin Mirza Umami Irwin Mirzah Umami Irwin Mirzah Umami J Juniarti Jamaan, Akmal Julio Eiffelt Rossaffelt Rumbiak Jumsu Trisno Juniarti Juniarti Karjunita, Nike Kurniati, Fimetha Riva Lubis, Reynaldi Fasya Abdullah Lucky Fhigo Raffi Ly Lan Phuong Martinius Martinius Megha Putri Tanjung Megha Putri Tanjung Megha Putri Tanjung Meisilva Erona Sitepu Miranti Miranti Muhammad Fadil Muhammad Fadil Muhammad Ihsan Harahap Munthe, Thomas Syaipuddin Munzir Busniah Murdiman, Imelda Muzilatul Nilisma MY SYAHRAWATI Noveriza Hermeria Noveriza Hermeria Noveriza, Hermeria Nurbailis Nurbailis Nurbailis Nurbailis Obel, Obel Pandu Chayadi Wasirin Prawira, Fachrizky Erdi Putra Santoso Putri mawar Sari Putri, Afrianingsih R.A, Ihsan Rachmad Hersi Martinsyah Raffi, Lucky Fhigo Rahayu, Silva Dika Ramadhan, Nugraha Reflin Reflin Reflin Reflin Reflin, Reflin Reni Mayerni Rifai, Imam Risa Meutia Fiana RITA HARNI Rover Rover Rusdi Rusli Rusmanida Rusmanida Saibi, Saibi Salsabilla Afisti Sulyanti, Eri Sutoyo Sutoyo Tajudin, Rian Tanjung, Megha Putri Triana, Lora TRIMURTI HABAZAR Trimuti Habazar Trizelia . UJANG KHAIRUL Wahyudi , Nizar Alim Wahyuni, Fatma Andria Warnita Wasirin, Pandu Chayadi Wellyalina, Wellyalina Wibowo, Ilham WINARTO Winarto Winarto Winarto Winarto Winarto Winarto Wiwik Suryani Yaherwandi Yenny Liswarni Yogie Aditya Pratama Yunisman Yunisman Zahara, Vatima Zaqi, Fahrul Zuldadan Naspendra Zulfadli Syarief Zulfadly Syarif Zurai Resti \Fiqri, Muhammad