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INDONESIA
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Published by Universitas Lampung
ISSN : 14117525     EISSN : 24610399     DOI : -
Core Subject : Agriculture,
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 521 Documents
Visual observation and image analysis method of blight disease severity for resistance assessment of two rice varieties HS, Gusnawaty; Hasan, Asmar; Rahmadani; Khaeruni, Andi; Bande, La Ode Santiaji; Taufik, Muhammad; Satrah, Vit Neru
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 2 (2025): 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/jhptt.225275-286

Abstract

Bacterial Leaf Blight (BLB), caused by Xanthomonas oryzae pv. oryzae, is a major threat to global rice production, causing yield losses of up to 80%. Accurate assessment of disease severity is essential for developing resistant rice varieties and implementing effective management strategies. However, traditional visual observation methods, while widely used, are prone to subjectivity and reduced accuracy. This study evaluates the accuracy of image analysis for assessing rice plant resistance to BLB. Disease severity was assessed using both visual observation and image analysis, with results quantified through the Area Under the Disease Progress Curve (AUDPC) and infection rate calculations. Image analysis outperformed visual observation, achieving an accuracy rate above 96%, compared to less than 90% for the latter. The Ciherang variety demonstrated greater resistance to BLB, with lower AUDPC and infection rates when assessed using image analysis. Conversely, visual observation produced contradictory results, highlighting its limitations. This study concludes that image analysis provides a more objective, reproducible, and accurate approach to assessing disease severity, with implications for breeding programs and integrated disease management systems. Further research is recommended to validate these methods across a broader range of rice genotypes and environmental conditions.
Epidemiology of banana bunchy top disease in South Sumatra, Indonesia Arsi, Arsi; Suparman, Suparman; Pujiastuti, Yulia; Irsan, Chandra
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 2 (2025): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLAN
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.225298-308

Abstract

Banana bunchy top disease has become increasingly important in South Sumatra. The disease, caused by Banana bunchy top virus (BBTV), leads to severe losses as infected plants fail to produce fruit. The virus is transmitted in a persistent manner by banana aphid, Pentalonia nigronervosa. Both nymphs and adults of the aphid can transmit the virus, with adults being more efficient vectors than nymphs. The threat of the disease in the province has been escalating, as indicated by the significant rise in the number of infected banana plants in the recent years. However, no epidemiological study had been conducted prior to this research. This study aimed to identify and evaluate the contributing factors to the epidemic of banana bunchy top disease in South Sumatra. A survey was conducted to assess the banana cropping system and all aspects contributing to the disease’s epidemiology in the province. Thirteen regencies were surveyed using a purposive sampling method, covering 11 regencies and 3 cities selected based on the accessibility of banana plantations by transportation routes. In each site, banana plants within an imaginary 50-meter diameter circle centered on an infected plant were sampled. The result showed that the BBTV epidemic was influenced by several factors: (1) banana genome, with diploid AA and triploid AAA cultivars being more resistant than those containing the B genome; (2) cropping system, with higher disease prevalence in mixed-cropping systems than in monoculture; (3) botanical environment, where the presence of alternative hosts of P. nigronervosa correlated with higher disease incidence; (4) farmer behavior, with lack of concern or action against the disease contributing to its spread; and (5) transportation access, with higher incidence observed in areas closer to roads.
Species diversity of fruit flies in three different habitats in Central Sulawesi, Indonesia Dirham, Dirham; Putra, Nugroho Susetya; Pranowo, Deni; Affandi, Affandi; Sari, Riya Fatma; Suputa, Suputa
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 2 (2025): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLAN
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.225241-254

Abstract

Fruit flies (Diptera: Tephritidae) are major pests in the horticultural sector. However, comprehensive information on their distribution across different habitats in Central Sulawesi is still lacking. This study aimed to assess the species diversity of fruit flies in three habitat types—urban, agricultural, and forest areas—in Central Sulawesi, Indonesia. Collections were conducted from November 2022 to May 2023 using Steiner traps baited with cue lure (CUE) and methyl eugenol (ME). Fruit fly specimens were identified to the species level, and diversity, dominance, and evenness indices were calculated. A total of 32 species and 10,393 individual fruit flies were collected across the three habitat types. The forest habitat exhibited the highest diversity and evenness indices, followed by agricultural and urban areas. In contrast, the urban habitat showed a higher dominance of certain species. The most dominant species were Bactrocera dorsalis (ME trap) and B. albistrigata (CUE trap). Notably, the presence of rare species found exclusively in forest habitats contributed significantly to the higher species richness observed there.
The Impact of organic amendments (vermicompost and fermented cow manure) on managing corn stalk rot disease caused by Fusarium incarnatum Jamel, Dareen S.; Hatem, Mena Waleed; Kareem, Tariq A.
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 2 (2025): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLAN
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.225350-360

Abstract

This study investigated the efficacy of organic amendments, specifically vermicompost (V) and fermented cow manure (C), at application rates of 625 and 1250 kg/dunam, in managing corn stalk rot disease caused by Fusarium incarnatum. Maize (Zea mays L.) is a globally vital crop, making the study of its diseases, such as stalk rot, essential for ensuring food security. Field experiments were conducted on five hybrid corn varieties (DKc6664, DKc6777, GS235982, GS235772 and 2341.Rayal) during the spring season of 2024 in Baghdad, Iraq. The results demonstrated that higher application rates (V. 1250 and C. 1250) significantly reduced disease severity and improved plant growth parameters, including plant height, vegetative mass, and yield components. Vermicompost at 1250 kg/dunam (V. 1250) was particularly effective in reducing disease severity in DKc6664 (16.67%) and DKc6777 (16.67%), while fermented cow manure at 1250 kg/dunam (C. 1250) enhanced root development and seed weight in DKc6777. In contrast, F. incarnatum inoculation consistently increased disease severity across all varieties, with the highest severity observed in GS235982 (91.61%). These findings highlight the potential of organic amendments, especially at higher application rates, to improve corn productivity and manage stalk rot disease, even under pathogen pressure.
Efficacy analysis of nano-insecticides from essential oils in controlling Sitophilus oryzae L. (Coleoptera: Curculionidae) in stored rice Hoesain, Mohammad; Firnanda, Anita; Haryadi, Nanang Tri; Wahyuningsih, Sri; Alfarisy, Fariz Kustiawan; Adiwena, Muh; Pradana, Ankardiansyah Pandu
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 26 No. 1 (2026): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLANT PE
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.1261-13

Abstract

This study evaluated nano-insecticides formulated from essential oils of mint (Mentha piperita), lemongrass (Cymbopogon citratus), basil (Ocimum basilicum), and eucalyptus (Eucalyptus sp.) for controlling Sitophilus oryzae, a major pest of stored rice. Essential oils were extracted using hydrodistillation, and nanoemulsions were prepared via a low-energy method. Efficacy tests conducted at concentrations of 1–5% showed that mint and lemongrass nano-insecticides were the most effective, achieving 100% mortality at 5% concentration within 168 hours and exhibiting superior repellency (mint oil reached 100% repellency at 5%). At 5% concentration, mint oil caused 25% mortality after 24 hours, increasing to 86% by 96 hours and reaching 100% by 120 hours, while lemongrass oil induced 10% mortality at 24 hours, 76% by 96 hours, and 100% by 144 hours. Their high efficacy is attributed to bioactive compounds such as menthol and citral, which disrupt the pest’s physiological processes. In contrast, eucalyptus and basil oils demonstrated comparatively lower mortality and repellency. These results highlight the potential of mint and lemongrass nano-insecticides as eco-friendly alternatives to synthetic pesticides and provide a sustainable option for integrated pest management in stored rice.
Distribution of Spodoptera frugiperda (Lepidoptera: Noctuidae) strains and their association with different landscape structures in Bali, Indonesia Monica, Dheya Cintya; Kusumah , Yayi Munara; Winasa , I Wayan Winasa
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 26 No. 1 (2026): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLANT PE
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.12614-22

Abstract

Spodoptera frugiperda, commonly known as the Fall Armyworm (FAW), is an invasive pest originating from the Americas that poses a serious threat to maize production in Bali, with potential crop losses reaching up to 50%. To monitor its genetic distribution, this study employed molecular identification using the mitochondrial cytochrome oxidase subunit I (mtCOI) and triosephosphate isomerase (Tpi) gene markers. The research aimed to identify FAW strains present in Bali and to assess their distribution across different landscape structures. The study consisted of four main stages: (1) sample and coordinate collection, (2) DNA extraction, amplification, and sequencing, (3) molecular data analysis, and (4) spatial analysis using QGIS, Google Earth Pro, and RStudio 4.3.1 with a generalized linear model (GLM). showed that the COI-R/Tpi-C strain was dominant in the central (Badung and Tabanan) and eastern (Klungkung) regions of Bali, whereas the COI-C/Tpi-C strain was found in the northern (Buleleng), southern (Denpasar), and western (Jembrana) regions. FAW haplotypes were relatively evenly distributed across all sampling locations. No significant association was detected between FAW strain distribution and landscape structure, leaving unclear which vegetation types act as ecological corridors or barriers. The low strain and haplotype diversity observed across both gene markers suggests that genetic variation is largely confined within, rather than between, regions, resulting in a relatively uniform distribution of FAW haplotypes across Indonesia, including Bali.
Fusarium keratoplasticum TKKS-1: A potential native entomopathogenic fungus to control Armyworm, Spodoptera litura Fabricus (Lepidoptera: Noctuidae), on mustard plants Sahid, Abdul; Akhsan, Ni’matuljannah; Sundari, Fety
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 26 No. 1 (2026): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLANT PE
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.12623-30

Abstract

The use of entomopathogen (insect pathogen) is one of the effective strategies for managing insect pests. This study aimed to evaluate the efficacy of the entomopathogenic fungus Fusarium keratoplasticum against Spodoptera litura larvae under laboratory conditions and to assess its potential in controlling infestations on mustard plants. The pathogenicity of the fungal isolate was tested against third-instar S. litura larvae at a concentration of 1 × 107 conidia/mL. Both fungal isolates caused 100% larval mortality, however, F. keratoplasticum acted more rapidly than Beauveria bassiana, reaching 100% mortality within 6 days, compared to 9 days for B. bassiana. The virulence of F. keratoplasticum was further evaluated using a Simple Completely Randomized Block Design (SCBD) consisting of five treatments with different conidial concentrations (1 × 106, 2 × 106, 4 × 106, 8 × 106, and 1 × 107 conidia/mL) and an untreated control. A commercial B. bassiana formulation (1 × 107 conidia/mL) served as a comparison. The application technique involved direct exposure of S. litura larvae to the fungal suspensions. The LC50 value of F. keratoplasticum was 2.74 × 106 conidial/mL, while the LT50 value at 1 × 107 conidia/mL was 2.96 days, significantly shorter than that of B. bassiana (LT50 = 3.63 days). Under semi-field conditions, F. keratoplasticum demonstrated superior effectiveness in controlling S. litura larvae on mustard plants, achieving complete mortality more rapidly than under laboratory conditions and outperforming B. bassiana. These findings indicate that F. keratoplasticum has strong potential to be developed as a biopesticide.
Endophytic Beauveria bassiana in root, seed, and foliar-treated maize affecting on Spodoptera frugiperda larvae and its parasitization eggs Herlinda, Siti; Saripudin, Saripudin; Thosin, Thosin; Madya, Sakha Prawira; Sari, Jelly Milinia Puspita; Suwandi, Suwandi; Anggraini, Erise; Suharjo, Radix
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 26 No. 1 (2026): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLANT PE
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.12659-67

Abstract

Spodoptera frugiperda is a highly polyphagous pest capable of causing up to 100% yield loss in maize. This study aimed to evaluate the effects of endophytic Beauveria bassiana applied through root drench, seed treatment, and foliar spray on the severity of larval feeding damage and egg parasitization by S. frugiperda. The B. bassiana isolate (JgSPK) used in this study was molecularly identified and deposited in GenBank (acc. no. MZ356494). Results indicated that among the three inoculation methods, seed treatment resulted in the highest endophytic colonization, followed by soil drench and foliar spray. Feeding on leaves colonized by the fungus increased larval mortality and resulted in abnormal pupation. Seed treatment showed the greatest potential in reducing larval feeding severity compared with foliar spray and soil drench applications. However, none of the inoculation methods significantly affected egg parasitization rates. Overall, endophytic B. bassiana reduced larval attack severity but did not influence egg parasitization, indicating compatibility with egg parasitoids. Further research is recommended to evaluate potential effects on larval parasitoids.
Pattern distribution and epidemic factors of stem canker disease caused by Neoscytalidium dimidiatum on pitahaya in Banyuwangi Regency, East Java, Indonesia Sukmana, Andra Sahab; Tondok, Efi Toding; Wiyono, Suryo
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 26 No. 1 (2026): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLANT PE
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.12646-58

Abstract

Neoscytalidium dimidiatum is an airborne pathogen that causes stem canker disease, characterized by small brown spots surrounded by a yellow halo on the plant stem. These spots expand and darken from brown to dark brown and eventually black. In addition to attacking the plant stem, this disease can also infect the fruit. This research aims to understand the distribution pattern model of stem canker disease and to identify the factors contributing to the epidemic caused by N. dimidiatum. The study was conducted through the collection of secondary data, field observations of disease severity, assessment of farmers’ cultivation practices via questionnaires, isolation of phyllosphere and rhizosphere microbes, and soil chemical analysis. The results showed that this pathogen initially exhibits a random distribution pattern but later develops into infection patches with two possible dissemination modes based on the observed distribution pattern: airborne transmission and vegetative planting materials. Environmental factors influencing the stem canker epidemic include rainfall exceeding 98 mm/month, a temperature of 27 ºC, and humidity of 78.3%. Biotically, the diversity and abundance of phylloplane and rhizosphere microbes in low-severity areas are higher than in high-severity areas. From the abiotic aspect of soil chemistry, the elements P, Mg, Fe, and total N are associated with reduced stem canker intensity. Four aspects of cultivation techniques are closely related to the human role in the formation of the stem canker epidemic: the use of phytohormones, the control methods employed, the choice of pitahaya varieties, and yield losses.
Preliminary performance screening of microbial consortia on fusarium basal rot control and shallot growth Aisyah, Siti Nur; Asih, Kulsum Kurnia; Suseno, Dyah Rahmawati; Setiawan, Aprilia Budhi; Astuti, Agung; Hidayat, Taufiq; Syafriani, Elly; Harikrishna, Jennifer Ann; Putri, Siska Wahyuni
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 26 No. 1 (2026): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLANT PE
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.12631-45

Abstract

Developing an effective biocontrol consortium requires comprehensive assessment to ensure that the selected microbial combinations can provide both strong disease suppression and plant growth-promoting effects. This study aimed to evaluate the performance of four biocontrol consortia composed of indigenous microbes from Bantul Regency, Indonesia, in suppressing Fusarium basal rot (FBR) and promoting the growth of shallot (Allium cepa var. aggregatum) cv. Bauji. Three indigenous isolates were used: Trichoderma asperellum strain PBt1, Bacillus cereus strain PBt2, and B. cereus strain PBt3. Four consortia were formulated by combining two or three of these isolates, designated as Consortia A, B, C, and D. The biocontrol activity against Fusarium solani DRB-1 was evaluated for both single isolates and consortia. A greenhouse experiment was conducted using a Completely Randomized Design with two inoculation timings (before planting and early vegetative stage) and five replicates. The performance of each consortium was assessed based on FBR severity and shallot growth parameters. Results showed that Consortia B (T. asperellum PBt1 + B. cereus PBt3) applied before planting achieved the highest FBR reduction (34.8%) at 42 days after planting (DAP). Moreover, this consortium significantly enhanced shallot yield, as reflected by increased bulb weight and number. These findings suggest that Consortia B has strong potential to improve both FBR management efficacy and shallot productivity.

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