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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Fitopatologi Indonesia Agrikultura Sainstek Jurnal Natur Indonesia Cropsaver : Journal of Plant Protection JURNAL ILMU PERTANIAN Jurnal Agro JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Jurnal Agro Industri Perkebunan Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian JPT : JURNAL PROTEKSI TANAMAN (JOURNAL OF PLANT PROTECTION) Jurnal Hilirisasi IPTEKS (JHI) Buletin Ilmiah Nagari Membangun Unri Conference Series: Agriculture and Food Security National Multidisciplinary Sciences
Nurbailis
Andalas University, Padang
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Dentistry Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Public Health Social Sciences Veterinary Other

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Exploration of Fungi Associated with Branch Dieback Disease on Cocoa in Padang City Nurbailis, Nurbailis; Yulisyah, Rummah; Nelly, Novri
Jurnal Proteksi Tanaman (Journal of Plant Protection) Vol. 5 No. 1 (2021): June 2021
Publisher : Plant Protection Department, Faculty of Agriculture, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jpt.5.1.1-11.2021

Abstract

Branch dieback is one of the primary diseases in cacao plants. The disease affects young shoots and twigs, causes leaves to die, and leaves them bare, interfering with photosynthesis. This study aimed to determine the causative pathogens in Padang City. The locations were: Sungai Sarik Kuranji, Lubuk Minturun Koto Tangah, and Teluk Kabung Bungus. The locations have the following criteria: age ? three years, the number of plants at the location ? 50 individuals, and found symptoms of branch dieback. The research used descriptive methods. The sample represented 10% of the total number of plants at the location, was collected randomly. The results found four species of fungi associated with the disease, namely Oncobasidium theobromae, Botrydiplodia theobromae, Fusarium decemcellulare, and Fusarium sp1.
Aplikasi Rizobakteri untuk Pengelolaan Spodoptera exigua Hübner pada Tanaman Bawang Merah (Allium cepa Linnaeus) di Lapangan Hidrayani, Hidrayani; Nurbailis, Nurbailis; Yeni, Fitri; Ikhsan, Zahlul
Jurnal Proteksi Tanaman (Journal of Plant Protection) Vol. 8 No. 1 (2024): June 2024
Publisher : Plant Protection Department, Faculty of Agriculture, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jpt.8.1.12-20.2024

Abstract

Spodoptera exigua is the primary pest attacking shallot plants from the vegetative to the generative phase. Yield loss caused by S. exigua attack can reach 57%. Rhizobacteria have been known to be used as biocontrol agents for controlling insect pests. The research objectives were to determine and compare the effectiveness of Yuyaos and BPTPH rhizobacteria formula (Bacillus sp.) in suppressing the attack of S. exigua on shallot-growing areas. The study used a completely randomized design (CRD) of 3 treatments and five replications. The treatment consisted of shallot seedlings treated with two types of rhizobacteria (Yuyaos and BPTPH) and water (without rhizobacteria) as control before planting. Beneficial effects of the rhizobacteria on shallot plants were observed in the following variables, including the development of the S. exigua population, damage level of S. exigua, and shallot growth. The results showed that introducing Yuyaos rhizobacteria (RZ2.1AG1, Bacillus thuringiensis), which originated from the rhizosphere of the chili plant, was the best way to protect shallot plants from S.exigua. Effectively reduced the population of S.exigua (78.90%), leaf damage (62.12%), and damage intensity (38.88%). On the other hand, Yuyaos was also influential in increasing tuber growth (11.11%), plant height (43.29%), number of leaves (58.33%), and number of tillers (22.22%).
Biological Control of Aphis gossypii on Red Chili Pepper using Locally Isolated Beauveria bassiana and Metarhizium anisopliae Bui, Dang Khoa; Hidrayani, Hidrayani; Nurbailis, Nurbailis
Jurnal Proteksi Tanaman (Journal of Plant Protection) Vol. 9 No. 2 (2025): December 2025
Publisher : Plant Protection Department, Faculty of Agriculture, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jpt.9.2.95-107.2025

Abstract

Red chili pepper (Capsicum annuum) is a high-value horticultural crop in Indonesia, but its production is severely constrained by Aphis gossypii, which can cause yield losses of up to 65%. This study aimed to evaluate the biological characteristics, virulence, and lethal-sublethal effects of local isolates of Beauveria bassiana and Metarhizium anisopliae against A. gossypii. Fungal viability and growth were assessed through spore germination and radial growth assays, while pathogenicity was evaluated using four conidial concentrations (10⁴–10¹⁰ conidia mL⁻¹). Aphid mortality, lethal concentration (LC), lethal time (LT), and reproductive performance were recorded, and the data were analyzed using factorial and probit analyses. The results showed that both fungi exhibited high spore viability (>96%) and stable mycelial growth rates (3.71–3.74 mm day⁻¹). Aphid mortality increased significantly with increasing conidial concentration, reaching 100% at 10¹⁰ conidia mL⁻¹, whereas mortality at 10⁴ conidia mL⁻¹ ranged from 26.67% to 40.00%. Probit analysis revealed comparable virulence, with LC₉₅ values of 8.09 for M. anisopliae and 8.29 for B. bassiana. Lethal time analysis showed a concentration-dependent killing pattern, with B. bassiana acting more rapidly at lower concentrations (10⁴–10⁶ conidia mL⁻¹) and M. anisopliae exhibiting shorter LT₅₀ values at higher concentrations (10⁸–10¹⁰ conidia mL⁻¹). In addition to lethal effects, both fungi significantly suppressed aphid reproduction, particularly at higher conidial concentrations. These findings demonstrate that B. bassiana and M. anisopliae possess strong and complementary bioefficacy against A. gossypii, supporting their potential application in integrated pest management programs.
Antagonistic Activity of Endophytic Bacterial Consortia Against Helminthosporium oryzae Breda de Haan, The Causal Agent of Brown Spot Disease in Rice Resti, Zurai; Nurbailis, Nurbailis; Fauzia, Afifa
CROPSAVER - Journal of Plant Protection Vol 8, No 2 (2025)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v8i2.67906

Abstract

Helminthosporium oryzae is a pathogen responsible for rice damage and losses of up to 45%. A consortium of endophytic bacteria as a biological agent is one of alternative and eco-friendly ways to suppress the development of plant pathogenic fungi. This research aimed to obtain an endophytic bacterial consortium capable of inhibiting the growth of H. oryzae. This research used a Completely Randomized Design (CRD) to investigate the efficacy of a consortium of six endophytic bacteria, alongside a control group, with three replications. The treatments included A (control), B (Serratia marcescens ULG1E4; Serratia marcescens JB1E3), C (Bacillus sp. HI; Serratia marcescens JB1E3), D (Bacillus sp. HI; Bacillus sp. SJI; Serratia marcescens JB1E3), E (Serratia marcescens ULG1E4; Serratia marcescens JB1E3; Serratia marcescens JB1E2), F (Bacillus sp. HI; Bacillus sp. SJI), and G (Bacillus sp. SJI; Serratia marcescens ULG1E4). The ability of endophytic bacterial consortia to suppress the growth of H. oryzae was evaluated utilizing dual culture and poisoned media techniques. The parameters observed were the inhibitory capacity of endophytic bacterial consortia, the inhibitory potential of secondary metabolites produced by the endophytic bacterial consortia, as well as the fresh weight and dry weight of the fungus. The results showed that treatment G (Bacillus sp. SJI; Serratia marcescens ULG1E4), B (S. marcescens ULG1E4; Serratia marcescens JB1E3), and E (Serratia marcescens ULG1E4; Serratia marcescens JB1E3; Serratia marcescens JB1E2), had a high ability to suppress the growth of H. oryzae with suspension inhibition 61,28%, 62,93%, 63,55%, and secondary metabolites inhibition rates of 96,93%, 94,21%, 97,60%.
Co-Authors . Martinius Afriani Panko ALBANA, HASAN Alfasiri, Ayubi Annisa, Tifla Fitri Annisya Diadinni Bui, Dang Khoa Cherly Yugu Tanca Darnetty Darnetty Darnetty, Darnetty Dina Ernawati Eri Sulyanti Fauzia, Afifa Fitri Yeni, Fitri Haliatur Rahma, Haliatur Hasmiandy Hamid Hermeria, Noveriza Hidrayani Hidrayani Indra Dwipa Jamaan, Akmal Liswarni, Yenny Magdalena Saragih Magdalena Saragih Saragih Martinius . Martinius ., Martinius Martinius Martinius Martinius Martinius Megha Putri Tanjung Muzilatul Nilisma MY SYAHRAWATI Naipinta, Rizka Noveriza Hermeria NOVRI NELLY Rahayu, Silva Dika Reflin Reflin Rifai, Imam Rummah Yulisyah Rusdi Rusli Saragih, Magdalena Tanca, Cherly Yugu Tanjung, Megha Putri Trimuti Habazar Trizelia . Verry Azniza Winarto Winarto Winarto Winarto Yaherwandi Yenny Liswarni Yulisyah, Rummah Yulmira Yanti YUNISMAN . Yunisman Yunisman Yusniwati Yusniwati Zahlul Ikhsan Zurai Resti