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All Journal JPT : JURNAL PROTEKSI TANAMAN (JOURNAL OF PLANT PROTECTION)
Trizelia Trizelia
Universitas Andalas, Indonesia
Agriculture, Biological Sciences & Forestry Environmental Science

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Pathogenicity of Indigenous Entomopathogenic Fungi from West Sumatera, Indonesia, against Fall Armyworm Spodoptera frugiperda and Their Effects on Post-Larval Development Indri Yanil Vajri; Trizelia Trizelia; Haliatur Rahma; Yusniwati Yusniwati
Jurnal Proteksi Tanaman (Journal of Plant Protection) Vol. 10 No. 1 (2026): June 2026
Publisher : Plant Protection Department, Faculty of Agriculture, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jpt.10.1.56-70.2026

Abstract

Spodoptera frugiperda is a major invasive pest of maize that requires effective control strategies. Entomopathogenic fungi are promising biological control agents because they can infect larvae and disrupt insect development. However, information on indigenous fungal isolates from West Sumatra, Indonesia remains limited. Moreover, their effects on post-larval development of S. frugiperda are still poorly understood. This study aimed to evaluate the pathogenicity of several fungal isolates against S. frugiperda under laboratory conditions. The experiment was arranged in a Completely Randomized Design (CRD) with eight treatments and four replications. The treatments consisted of six fungal isolates (Beauveria bassiana BBWS, B. bassiana BBPD, Metarhizium anisopliae B22C, M. anisopliae KRJ, Trichoderma asperellum A116, T. asperellum S2D11) and two controls (sterile distilled water and cypermethrin). Fungal suspensions were applied to second-instar larvae at 1 × 10⁸ conidia mL⁻¹. All data were analyzed using ANOVA followed by the LSD test at the 5% level. This study showed that the entomopathogenic fungal isolates tested affected the survival and postlarval development of S. frugiperda under laboratory conditions. The fungal treatments caused larval mortality ranging from 40 - 70% and reduced the proportion of larvae into the pupal and adult stages. Among the tested isolates, B. bassiana BBWS was the most effective, causing the highest larval mortality, the shortest LT₅₀, and the lowest pupal and adult formation. However, further research is needed to confirm the pathogenicity mechanisms of the isolates, their conidial viability and stability during storage, and their efficacy under greenhouse and field conditions.
Virulence of Five Isolates of The Entomopathogenic Fungus, Metarhizium anisopliae, Against Brown Planthopper (Nilaparvata lugens) Trizelia Trizelia; Haliatur Rahma; My Syahrawati
Jurnal Proteksi Tanaman (Journal of Plant Protection) Vol. 7 No. 2 (2023): December 2023
Publisher : Plant Protection Department, Faculty of Agriculture, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jpt.7.2.127-133.2023

Abstract

The brown planthopper (Nilaparvata lugens) is one of the main pests of rice plants. This pest attack can cause crop failure or puso. Biological control of this pest can be carried out using the entomopathogenic fungus, Metarhizium anisopliae. The ability of this fungus to control pests is influenced by the source of the isolate. The purpose of this study was to obtain isolates of M. anisopliae, which is virulent to N. lugens. This study used an experimental method with a completely randomized design (CRD) in six treatments and five replications. There were five isolates of M. anisopliae used and one control. M. anisopliae was applied to nymphs and adults of N. lugens with a concentration of 108 conidia/mL. The research revealed that all M. anisopliae isolates tested were virulent against N. lugens nymphs and adults. The most virulent isolate for the two stages of BPH was Met3B, which was collected from the leek rhizosphere. The isolate caused an adult mortality rate of 52%, nymph mortality of 60% in 10 days after application, and adults formed after application was only 37.33%.
Ability of Beauveria bassiana to suppress Colletotrichum truncatum and increase the growth of chili plants (Capsicum annuum) Dini Puspita Yanty; Trizelia Trizelia; Darnetty Darnetty; Jumsu Trisno
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.8.1.42-52.2024

Abstract

Anthracnose is a disease caused by Colletotrichum sp., which can reduce the quality and yield of red chili by 45-60%. This study aimed to determine the ability of different Beauveria bassiana isolates to control anthracnose in chili. The research employed a Randomized Block Design (RBD) consisting of 6 treatments and 5 replications. The treatments included a control and 5 different B. bassiana isolates (PD114, TD312, WS, BbKo, KT2B21). The observed variables included incubation period, disease incidence and severity, plant height, number of leaves, flowering time, and chili fruit weight. The results showed that the application of different B. bassiana isolates have effectively inhibited the development of Colletotrichum truncatum, which caused anthracnose in chili. B. bassiana has demonstrated the ability to prolong the incubation period of C. truncatum (5.40 days) and reduce the percentage of disease incidence (16%). Furthermore, the application of B. bassiana increased the height of chili plants (40.40 cm) and the number of leaves (32 leaves), accelerated the flowering time (42.80 days), and boosted chili production (178.25 g). The WS and TD312 isolates revealed the most significant results. Although the severity of the disease was not impacted, the 2 isolates provided notable agronomic benefits to the chili plants.
Co-Authors Darnetty Darnetty Dini Puspita Yanty Haliatur Rahma Indri Yanil Vajri Jumsu Trisno My Syahrawati Yusniwati Yusniwati