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Journal : Jurnal Agro

Rhizospheric Bacillus spp. as biocontrol agents against maize downy mildew and growth promoters Mugiastuti, Endang; Manan, Abdul; Soesanto, Loekas; Primayuri, Deviana; Sundari, Dini
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.45887

Abstract

Downy mildew is one of the major patogen limiting maize productivity in Indonesia. Effective mitigation strategies are essential due to the significant yield losses it causes. Biological control is an environmentally viable alternative method of disease management. Bacillus spp. are biological control agent capable of producing metabolic chemicals that can inhibit plant infections, hence holding potential for downy mildew management. This study aimed to evaluate the effectiveness of Bacillus spp. from the maize rhizosphere to manage downy mildew and promote maize plant growth. The research employed a completely randomized block design, consisting of four treatments and six replications. The treatments comprised Bacillus amyloliquefaciens BB.R3, B. subtilis BK.R5, Bacillus spp. BK.R9, fungicides treatment (metalaxyl), and control group for comparison. The observed variables included spore germination, incubation period, disease incidence, disease severity, Area Under Disease Progression Curve (AUDPC), number of leaves, plant height, fresh shoot weight, and fresh root weight. The findings revealed that B. amyloliquefaciens BB.R3, B. subtilis BK.R5, and Bacillus spp. BK.R9 effectively inhibited downy mildew by decreasing spore germination by 80.55-100%, prolonging the incubation period, and inhibiting disease incidence by 20.37-53.70%, disease severity by 25.64-62.56%, and AUDPC by 22.21-63.37%. B. amyloliquefaciens BB.R3 can enhance plant growth by augmenting root weight by 122.63% and maize plant weight by 80.26%.   ABSTRAK   Penyakit bulai merupakan salah satu penyakit utama yang menghambat produksi jagung di Indonesia. Upaya pengelolaan penyakit bulai perlu dilakukan mengingat besarnya kehilangan yang ditimbulkan.  Pengendalian hayati merupakan salah satu alternatif pengendalian yang ramah lingkungan dan berkelanjutan. Bacillus spp. adalah bakteri yang mampu menghasilkan senyawa metabolik, dapat mengendalikan pathogen tanaman sehingga berpotensi sebagai pengendali penyakit bulai.  Penelitian ini bertujuan untuk mengetahui kemampuan Bacillus spp. asal rizosfer untuk mengendalikan penyakit bulai dan mengoptimalkan pertumbuhan tanaman jagung. Penelitian menggunakan Rancangan Acak Kelompok Lengkap, dengan 4 perlakuan dan 6 ulangan. Perlakuan meliputi Bacillus amyloliquefaciens BB.R3, Bacillus subtilis BK.R5, Bacillus spp.. BK.R9, serta fungisida (metalaksil) dan kontrol sebagai pembanding. Variabel yang diamati meliputi perkecambahan spora, masa inkubasi, kejadian penyakit, intensitas penyakit, AUDPC, jumlah daun, tinggi tanaman, bobot tanaman segar, dan bobot akar segar. Hasil penelitian menunjukkan B. amyloliquefaciens BB.R3, B. subtilis BK.R5, Bacillus spp.. BK.R9 mampu menekan penyakit bulai jagung, dengan menurunkan perkecambahan spora 80,55-100 %, menunda masa inkubasi, menurunkan kejadian penyakit sebesar 20,37-53,70 %, intensitas penyakit sebesar 25,64-62,56%, dan AUDPC sebesar 22,21-63,37%. B. amyloliquefaciens BB.R3 dapat memacu pertumbuhan tanaman, dengan meningkatkan bobot akar sebesar 122,63 % dan bobot tanaman jagung sebesar 80,26%.   Kata kunci: Bacillus, jagung, pengendalian hayati,  Peronosclerospora maydis, ramah lingkungan
Co-Authors -, Roland Tandiongan A. Muchsin, Misri A. Rasyid, Saifuddin Abd. Razak Abdul Hadi Abdul Karim Abdul Karim Abubakar, Al Yasa' Achmad Munadjat, Achmad Adawiyah, Baiq Safitri Rabiah Addini Nurizzati Agus Junaidi Agusrinal Agustiani, Eka Aindo, Nur Rezki Alamsyah AB Aldi Rahman Ali Hasan, Nurhayati Almadania, Niswana Alvinda, Salsa Billa Amiruddin Amiruddin An Nur, Ibbadurahman Andi Safrizal Andik Kurniawan Anwar Daud Anwar Daud Apriliani, Nurma Arimbawa, I Gede ariyati, Yannik AS, Nasruddin Aslam Nur Asnawi Muslem Asramid Yasin Asyura Atiqoh Zummah Auni, Luthfi Ayu Afita Sari Azis, Mohd. Azizah Azizah Azura, Nur A’dawiyah, Didah Rabi’atul A’yun, Qurrota A’yun B. Busaini, B. Bahdad Bahdad, Bahdad Bana, Sahindomi Bayu Kurniawan Bte Salman, Nola Fibriyani Cecep Kusmana Chahyani, Rani Champion, Ibrahim Chatarina Umbul Wahyuni Christin Tiara Revita, Natalia Cut Intan Salasiyah Cut Putroe Yuliana Daeng , Akung Dara Yusnida Dedi Erawadi Dellita Sari, Nurriza Dwi Dery Rimasa Devi Septia Putri Beauty DEWI FITRIANI Dewi, Nina Nurmalia Dhea Ayu Safira Dhuha Hadiyansyah Dicky Wirianto Didik Hariyanto Dine Meigawati Dini Anggraini, Dini Dita Wisudyawati Dwi Budi Santoso Edwin Agung Wibowo, Edwin Agung Eka Agustiani Eko Teguh Pribadi Elangga Sony Widiharsono Elvi Yenie, Elvi Embong, Rahimah Endah Sih Prihatini Endang Astuti Endang Astuti Endang Mugiastuti Erif, La Ode Muhamad Erlin Marlinda Ersapoetri, Fida Suci Fadhilah, Muhammad Arif Faez Syahroni Faez Syahroni Fahidu, Wa Ode Hastiani Fahlehfi, Muhammad Ikbal Faisol Mas’ud Fajar Akriana NR Fajar FY Basori, Yana Farid Nur Salim Farida, Fida Farijal Faris Giats Faruqi, Adnan Fatonah, Ulfi Fauzi Fauzi Fauzi Ismail Fauzi Ismail Firdaus, Muhammad Dhilal Mustambit Fitrianti Fitrianti Fuadi, Helmi Fuquh Rahmat Shaleh Gandhi Sutjahjo Gandri, La Gunanti Mahasri Habiburrahim Habiburrahim Hadi, Abdul Hafidawati, Hafidawati Hailuddin Hakim, Nasruan Hasani, Umar Ode Hayati, Atiyah Nurul Hazal Fitri Helmi Fuadi Heriawan, Bambang Hidayat, Herlan Hikmat Kodrat Husaini Husda Husaini, Ahmad Zaki Husnul Riati I Wayan Suardana Ibrahim, Arfah Ikhwan Ikhwan Indriayani, Lies Iping Rahmat Saputra Isabela, Isabela Isfiya Febriani Ismail, Nurjanah Isroni, Wahyu Iwan Harsono Iwan Marwan, Iwan Jamilah, Siti Syarohan Jariyah, Ita Ainun Jovial Pally Taran Junartin Teke Kahirun, Kahirun Kamarullah Kamarullah Kamarullah Kamarullah Kartob Barus, Lamhot Kasim, Safril Khairisman, Khairisman Khairul Fahmi Khatib A. Latief Khozainul Khoiriyah, Iin khuzaini, Khuzaini Kodrat, Hikmat Kuntoyo, Wisnu Amri Kurniawan, Ichsan Kusdiyanti, Erma Kusuma, Muh. Wirayuda Hadi La Baco S La Ode Andimbara La Ode Midi, La Ode La Ode Muhammad Erif La Ode Siwi Laila Wardani Laily Mutmainnah Lestiawati, Ida Lia Oktavia Ika Putri Lianda, Ramadha Lies Indriyani Loekas - SOESANTO Loekas Soesanto Lukypa, Jihan Luluk Fadliyanti Luthfi Auni Maemunah Maemunah Mahmud Hamundu, Mahmud Mahyudin Nasir Maisa Maisa, Maisa Mandala, Marga MARIA BINTANG Masrun MIFTACHUR ROCHMAH Misri A. Muchsin Misril Fuadi Moh. Nafri, Moh. MUAIDY YASIN, MUAIDY Muchsin, Misri M. Muhammad Afif Muhammad Arif Fadhilah Muhammad Arifin MUHAMMAD ARIFIN Muhammad Arifin Muhammad Saifudin Muhammad Saleh Qadri Muhammad Zainul Ansori Muhammadun Muhazar, Muhazar Muhibbuthabry Muhibbuthabry Muhsimin, Muhsimin Mukhsin Nyak Umar Mukhtaruddin Mukhtaruddin Mukhtaruddin Mukhtaruddin Muljo Wachjadi Murpratiwi, Santi Ika Murti Wisnu Ragil SASTYAWAN Mustaqim, Ridha Mutia Watul Wardah Nabila, Risma Nanang Ari Utomo Nanda Ria Naufal, Hafiz Aulia Ni'matul, Fina Azizah Noegroho, Novianto Novi Sahillawardi Nufiar Nufiar Nugroho, Sefilia Adhi Nuraini Mannan Nurhadi, Farhan Nurhayati Ali Hasan Nurhayati Ali Hasan Parwita, Khairi Permana, Mohamad Didi Pratiko Gustomi, mono Pratito, Dwi Widi Primayuri, Deviana Prisca Aprilia Pratama Purwaningrum, Ajeng Handayani Putri, Natassya Chania Rachmawati, Windasari Rahayu Kusdarwati Rahmad Syah Putra Rahmat Syahputra Ramli, Rimayang Anggun Laras Prastianty Rasyad Rasyad Rasyad Ratu, Misbayanti Dian Reichen, Stella Resty Wulandari Retno Twistiandayani Ridwan, Ridwan Rimasa, Dery Riswan Z Rita Safari Riza Widia Rizka Amalia Rizki Maulana Rizki, Syukri Rizqiya Safira Rokim Rokim Rokim, Rokim Roslaili, Yuni Ruhamah Ruhamah Rusdiana Permanasari Ruslan Ruslan Rustandi, Apriya Maharani Ruth Feti Rahayuniati Ruzaipah, Ruzaipah Safri, T. Mulkan Sagir, Junaidi Saiful Bahri Salman Aldo Alfaresi Salmatia, Wa Ode Sanusi Ismail Saprijal Saprijal Saprijal, Saprijal Saputra, Iping Rahmat Sariani, Sariani Saufi, Ahmad Sa’i, Sa’i Septian Fatianda Shiddiqi, Muhammad Ash Siswi, Nurfajri SITI AMINAH Siti Aulia Azmi SITI FATIMAH Siti Fatimah Siti Habsari Pratiwi, Siti Siti Sriningsih Siwi, La Ode SLAMET ROHADI Solly Aryza Sri Langgeng Ratnasari Stiawati, Tumi Suci Fajarni Suhana Suhana Sujadi Sundari, Dini Suraiya Suraiya Surtika Yanti Surya Cipta Ramadhan Kete Syukri Asnawi T. Lembong Misbah T. Mulkan Safri Tamaulina Br Sembiring Tasya Hilma Fadila Tathahira, Tathahira Teke, Junartin Teuku Luthfi Ashri Tibrani Tibrani, Tibrani Tri, Tri Artono Tuffahati, Zulfa Ummah, Khoirotul USWATUN HASANAH Vivi Fitriani Wa Ode Puput wahyunadi Winda Naraswari, Ni Nengah Windasari Rachmawati Wiwin Luqna Hunaida, Wiwin Luqna Woro Hastuti Setyantini Yudi Cahyoko Yudianto, Peri Yuhaidizen Yuliana, Cut Putroe Yulianto Yusup Ziaulhak, Dede Z, Riswan Zainal Abidin Zhahro, Fatimatus Zubaidah R, Zubaidah Zulfa Tuffahati Zulkhairi Sofyan Zulkri