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INDONESIA
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Published by Universitas Lampung
ISSN : 14117525     EISSN : 24610399     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Hama dan Penyakit Tropika (JHPT Tropika) publishes articles in plant pests, plant pathogens, plant damage caused by those pests and pathogens and or their management in tropical areas. In addition to basic and applied research papers, JHPT Tropika publishes short communication that have not been published. Before being accepted for publication, all manuscripts must be peer reviewed. The journal is published sixmonthly in March and September.
Arjuna Subject : -
Articles 565 Documents
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Activity of nanoemulsion formulated from Syzygium aromaticum and Myristica fragrans essential oils against Spodoptera frugiperda Eka Wulandari; Ni Siluh Putu Nuryanti; Desi Maulida; Dulbari Dulbari
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 26 No. 2 (2026): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLAN
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/j.hptt.226589-601

Abstract

Spodoptera frugiperda is a major pest of maize that can causes severe yield losses, while intensive use of synthetic insecticides raises concerns about environmental contamination and food safety. This study evaluated the larvicidal toxicity, synergistic interaction, feeding inhibition, and egg-hatching inhibition of nanoemulsions formulated with Syzygium aromaticum and Myristica fragrans essential oils at ratios of 1:1, 2:1, and 1:2 (v/v). The nanoemulsions were prepared using a low-energy phase-inversion method with Tween 80 as the emulsifier. Larvicidal activity against third-instar S. frugiperda was evaluated using a contact bioassay at concentrations of 0, 0.125, 0.25, 0.50, 1.00, and 2.00% (v/v), and mortality was recorded for 96 hours after treatment (HAT). Larvicidal potency was estimated by probit analysis, while interactions between the essential oils were evaluated using the combination index (CI). Feeding inhibition and egg-hatching inhibition were also assessed at a total essential oil concentration of 1.00%. The 2:1 S. aromaticum: M. fragrans nanoemulsion exhibited the greatest larvicidal potency, with an LC50 of 0.10% and LC95 of 1.42% at 96 HAT, and showed strong synergism (CI = 0.26 at LC50). This formulation had a mean droplet size of 95.5 nm. At 1.00% total essential oil concentration, the 2:1 formulation inhibited egg hatching by 88% and reduced larval feeding, with the feeding inhibition index reaching 61.02%. These findings demonstrate the potential of the 2:1 S. aromaticum: M. fragrans nanoemulsion as a botanical insecticide candidate for the management of S. frugiperda. Further studies on chemical composition, formulation stability during storage, and efficacy under greenhouse and field conditions are needed to support its development as a botanical insecticide.
Pest Risk Analysis (PRA) of Sitophilus granarius (L). (Coleoptera: Curculionidae) associated with wheat imports into South Sulawesi, Indonesia Junaidi Junaidi; Ahdin Gassa; Baharuddin Patandjengi; Ervina Wijayanti; Shella Sawiti Guci; Ramli Ramli
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 26 No. 2 (2026): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLAN
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/j.hptt.226556-571

Abstract

The increasing demand for food, combined with advances in transportation and technology, has accelerated international trade and increased the risk of introducing plant pests and diseases from other countries, thereby threatening the sustainability of domestic agriculture. One important preventive measure is the implementation of Pest Risk Analysis (PRA). This study aimed to conduct a PRA by assessing the risk associated with Sitophilus granarius (L)., in wheat imported from Germany into South Sulawesi, Indonesia. A qualitative risk analysis approach was used. The results indicated that the likelihood of entry, establishment, and spread of S. granarius was categorized as moderate, while the potential economic impact was categorized as high. Based on the combined assessment, the overall risk was classified as moderate. The recommended phytosanitary measures for wheat imports into South Sulawesi include compliance with plant quarantine requirements and additional obligations. Plant quarantine requirements include the provision of a Phytosanitary Certificate issued by the country of origin, entry through designated points of entry, and reporting and submission of the consignment to Plant Quarantine Officers for inspection and quarantine procedures. Additional obligations include ensuring that wheat grain originates from registered producers, is free from S. granarius and foreign materials, undergoes the required fumigation treatment before shipment, and passes inspection by the Indonesian Quarantine Authority at the point of entry. Appropriate phytosanitary measures, including treatment, rejection, or destruction of the consignment, may be implemented if the prescribed import requirements are not fulfilled.
Screening of entomopathogenic and endophytic fungi from various landscapes and evaluation of their antagonistic activity against Fusarium sp. Sitti Nuraeni; Siti Halimah Larekeng; M. Bayu Mario; Andi Prastiyo
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 26 No. 2 (2026): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLAN
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/j.hptt.226572-588

Abstract

Forestry research is increasingly focused on exploring microbial resources, including entomopathogenic endophytic fungi (EEFs), as potential biological control agent. This study aimed to explore and characterize fungal isolates obtained from different landscapes and biological sources in South Sulawesi and to evaluate the antagonistic activity of selected isolates against Fusarium sp. Sampling was conducted from May to July 2025 in a national park, forestry plant nursery, silkworm rearing centers, natural forests, plantation forests, community forests, and agroforestry systems. Insects, soil, and plant tissues were used as fungal isolation sources. Fungal isolates were characterized based on their morphological features and classified as entomopathogenic (EP), entomopathogenic endophytic (EEF), or endophytic (END) fungi according to their respective sources and observed characteristics. Three selected isolates were evaluated for antagonistic activity against Fusarium sp. using a dual-culture assay, and the data were analyzed using one-way analysis of variance (ANOVA) followed by Tukey’s HSD test. A total of 72 fungal isolates representing nine fungal taxa were recovered from the different sampling sources. The isolates included Aspergillus sp., Simplicillium subtropicum, Penicillium sp., Fusarium sp., Cladosporium oxysporum, Trichoderma sp., Cordyceps sp., Gibellula sp., and the microsporidian pathogen Nosema bombycis. Among the selected isolates, S. subtropicum sp. KuBi1, B. bassiana, BGRSP, and C. oxysporum KeTi1 significantly inhibited the radial growth of Fusarium sp. compared with the untreated control (P < 0.05), with the highest percentage inhibition of radial growth reaching 56% for KeTi1. These findings indicate that the selected entomopathogenic fungi have potential as biological control candidates against Fusarium sp.; however, further greenhouse and field studies are required to validate their efficacy and assess their suitability for development as microbial biopesticides.
Nanoencapsulated essential oil consortium for controlling anthracnose caused by Colletotrichum scovillei in Chili (Capsicum annuum L.) Riki Warman; Haliatur Rahma; Darnetty Darnetty; Rita Noveriza
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 26 No. 2 (2026): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLAN
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/j.hptt.226542-555

Abstract

Anthracnose, caused by Colletotrichum spp., is a major constraint in chili production and can result in substantial yield losses. This study aimed to identify the causal pathogen of anthracnose and evaluate a nanoencapsulated botanical pesticide based on an essential oil consortium for controlling the pathogen. The study comprised pathogen identification, formulation using different nanoemulsion-to-matrix ratios, physicochemical characterization, and in vitro antifungal evaluation. Morphological, pathogenicity, and molecular analyses identified Colletotrichum scovillei as the causal agent of anthracnose, with sequence similarity of up to 100% to reference sequences in GenBank. Among the tested formulations, Formula B (nanoemulsion-to-matrix ratio of 6:1) exhibited the lowest polydispersity index (PDI) of 0.488, indicating a comparatively narrower particle-size distribution among the formulations. Its Z-average particle size was 363.0 nm, with a zeta potential of −35.0 mV, indicating relatively good electrostatic stability. In vitro assays demonstrated that the nanoencapsulated essential oil consortium inhibited the growth of C. scovillei, although its efficacy varied among formulations and observation periods and remained lower than that of the synthetic fungicide. The inhibitory activity of the nanoformulations varied among formulations and generally decreased over the 14-day observation period. These findings indicate the potential of nanoencapsulated essential oil formulations as a botanical approach for suppressing C. scovillei. Further studies under storage and field conditions are required to evaluate formulation stability, persistence of antifungal activity, application rates, and practical efficacy.
Soybean breeding lines with potential resistance to cowpea mild mottle virus for cultivation under teak plantations Wuye Ria Andayanie; Indah Rekyani Puspitawati
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 27 No. 1 (2027): 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/j.hptt.1271-12

Abstract

This study aimed to identify soybean genotypes with potential for cultivation under teak (Tectona grandis L. f.) plantations. Eleven soybean breeding lines and two varieties were evaluated for cowpea mild mottle virus (CPMMV) symptom severity and infection status using indirect enzyme-linked immunosorbent assay (ELISA), agronomic traits, seed yield, harvest index, and seed proximate composition. Seed yield was standardized to 14% moisture content, while aboveground dry weight was determined after oven-drying at 80 ºC for 48 hours. Correlation analysis revealed significant positive associations between seed yield and plant height, days to maturity, and number of pods per plant. The breeding lines W/L. Temanggung-7-14 and W/PI 200.485-7-4, together with the variety Dena 2, showed promising seed yield and seed quality under teak shade. No significant differences in seed protein and lipid contents were observed between W/PI 200.485-7-4 and Dena 2. These genotypes warrant further evaluation for their adaptation to shaded environments and potential resistance to CPMMV. The findings suggest that soybean production under teak plantations may be feasible when genotypes are selected for suitable agronomic performance and efficient light use. Further replicated studies are needed to confirm CPMMV resistance and assess yield stability and seed quality under shaded conditions.     

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