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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 521 Documents
 47   48   49   50   51 
The spesies diversity of arthropods in surjan and conventional farming systems in the Special Region of Yogyakarta Wagiyana, Wagiyana; Alfarisy, Fariz Kustiawan; Suharto, Suharto; Habriantono, Bakhroini; Khozin, Mohammad Nur; Suandana, Febery Hery
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 1 (2025): 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/jhptt.1251-8

Abstract

An ecosystem is the relationship between insects and the environment in carrying out life processes. The majority of insects are herbivores, and plants serve as their main hosts. Plants also secrete hormone compounds that are favored by arthropods as both a food source and a host for survive. Based on their nature, arthropods are divided into pests and natural enemies. The surjan system is one of the agroecosystem modifications for sustainable agriculture. The study aimed to assess arthropod spesies diversity in different cropping systems. Monitoring was conducted on surjan and conventional land, using several types of traps, including pitfall traps, yellow traps, and pheromone traps. The diversity of arthropods in an ecosystem serves as an indicator of environmental health. This research provides recommendation for managing arthropods, whether as pests or natural enemies. The highest diversity index value was found in the conventional system, with the Shannon_H’ value of of 1.57 for trapping 1, 1.27 for trapping 2, 2.06 for trapping 3, and 1.20 for trapping 4. The species diversity (H’ > 1) value was classified in the medium category. The results of morphological identification revealed two species with the highest abundance: Bactrocera sp. and Atherigona sp. The effectiveness of yellow traps was higher compared to other types of trap, capturing a total of 280 species of pests.
Bio-attractant innovation with nano-gel technology to detect and control Silba adipata McAlpine on white cayenne peppers in Bali, Indonesia Merta, I Ngurah Mega; Supartha, I Wayan; Susila, I Wayan; Parwata, I Made Oka A; Yuliadhi, Ketut Ayu; Purnomo, Purnomo
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 1 (2025): 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/jhptt.12517-31

Abstract

Silba adipata is a new pest that attacks white chili pepper in Bali, Indonesia. Most farmers control this pest with synthetic insecticides although this method poses significant risks to human health and the environment. Therefore, innovations and control technologies that are environmentally friendly and sustainable are urgently needed. Preliminary results show that S. adipata frequently attacks local figs (Ficus variegata) in Bali. Dried figs (Ficus carica) have been reported to effectively attract S. adipata adults. This study aims to (1) determine the phytochemical compounds in F. variegata fruit extracts that have the potential to act as attractants for S. adipata during the process of searching for and locating host plants; (2) evaluate the effectiveness and efficiency of F. variegata fruit extract, nano fruit extract, and nanogel fruit extract as attractants for S. adipata on cayenne pepper plants. The methods used to achieve these objectives were (1) LC-MS/MS analysis for phytochemical profiling, and (2) a preference test to evaluate attractant efficacy. The results revealed that the phytochemical profile of F. variegata fruit extract includes 5-hydroxy-2-(4-hydroxyphenyl)-8,8-dimethylpirano[2,3-h]chromen-4-one, with the highest compound content (68.74%) in the fruit aged 9-16 weeks. The application of nanogel extract at a 50% concentration was highly effective and efficient as a biological attractant for S. adipata on white chilli plants in Bali. These findings strongly support the development of integrated pest management strategies in Indonesia.
Description of the morphology, morphometric, and molecular of Aphelenchoides fragariae (Aphelenchida: Aphelenchoididae) causing crimp disease of strawberry in Indonesia Kurniawati, Fitrianingrum; Hidayat, Sri Hendrastuti; Tondok, Efi Toding; Syafutra, Heriyanto; Supramana, Supramana
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 1 (2025): 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/jhptt.1259-16

Abstract

Aphelenchoides fragariae, commonly known as strawberry crimp nematodes, primarily target the aerial parts of plants, affecting both internal and external structures. In Indonesia, where strawberries are predominantly cultivated in highland regions, the presence of strawberry crimp disease has been confirmed. Infected plants exhibit symptoms such as stunted growth, reddened foliage, crimped or curled leaves, and malformed buds and blooms. Aboveground damage caused by the nematodes includes contorted shoots, undersized leaves, and reddish petioles, often accompanied by discolored patches on the foliage. These symptoms significantly impair the growth and productivity of strawberry plants, highlighting the nematode’s potential as a serious pest in these regions. The identification of A. fragariae was achieved through a combination of morphological and molecular characterization methods. Species confirmation relied on PCR amplification of the nematode’s cytochrome oxidase subunit I (COI) gene, using primers (COI F and COI R) designed in the laboratory. The amplification yielded a specific fragment of approximately 550 base pairs, which was sequenced for further analysis. Sequence alignment revealed identity levels ranging from 82.8% to 99.7%, confirming the presence of A. fragariae. The resulting sequences were deposited in GenBank under the accession numbers LC804455 (A. fragariae isolate RB) and LC804456 (A. fragariae isolate LB), providing a valuable resource for future studies on this nematode species.
Detection and identification of fungi causing strawberry wilt disease in North Sumatra, Indonesia Simanjuntak, Cadrak Perdamenta; Safni, Irda
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 1 (2025): 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/jhptt.12532-43

Abstract

Strawberry (Fragaria sp.) is primarily grown in temperate and some subtropical countries. With the expansion of fruit commodities in Indonesia, including the introduction of foreign cultivar, strawberry has been increasingly cultivated locally. In North Sumatra, strawberry cultivation, mainly for agritourism, is concentrated in Karo Regency, Berastagi District. This study aimed to detect and identify fungi responsible for wilt disease in strawberry plants across several areas of Berastagi, North Sumatra. This research was conducted from July 2022 to May 2023 at the Plant Disease Laboratory, Faculty of Agriculture, Universitas Sumatera Utara. The study followed Koch’s postulates: the pathogen was isolated and purified from symptomatic plants, then inoculated into healthy plants. Infected plants exhibiting the same symptoms as the initial sample were subsequently re-isolated, purified, and identified at the molecular level. The results confirmed that the causal agent of wilt disease in Daulu (Rini Colia Strawberry, Esy Azera Strawberry) and Dolat Raya (Sonakmalela Strawberry, Alea Strawberry, Sembiring Gurky Strawberry) was Fusarium oxysporum.
Symptoms variation and molecular characterization of Strawberry vein banding virus in Bali, Indonesia Phabiola, Trisna Agung; Selangga, Dewa Gede Wiryangga; Wirya, Gusti Ngurah Alit Susanta; Sudiarta, I Putu; Dinarkaya, Shah Mahapati; Listihani, Listihani
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 1 (2025): 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/jhptt.12544-53

Abstract

Vein banding disease has affected young strawberry leaves in Bali over the past five years. Caused by Strawberry vein banding virus (SVBV), the disease is primarily associated with fruit size reduction, though its exact impact remains unclear. This study aims to assess symptom variation, disease severity, and the molecular characteristics of SVBV in Bali strawberry plants. Field observations and molecular identification were conducted using PCR with SVBV-specific primers targeting the CP gene. Samples were collected from ten locations in Bali, including Pancasari, Candikuning, Wanagiri, Gobleg, and Kembang Merta. SVBV DNA from Candikuning, Pancasari, and Kembang Merta was successfully amplified, confirming SVBV infection as the cause of vein banding symptoms. SVBV induces vein banding with upward and downward leaf curling. Disease incidence was highest in Pancasari 1 and 3 (80%) and lowest in Wanagiri 1 and Gobleg (20–28%). Disease severity ranged from 13% to 83%, with the highest recorded in Pancasari, Buleleng, and the lowest in Kembang Merta, Tabanan. Molecular analysis revealed that the SVBV isolate from Bali shares 99.3–100% sequence homology with Chilean isolates. Phylogenetic analysis showed clustering with SVBV isolates from the United States, Brazil, and Chile. This study provides the first molecular characterization of SVBV in Bali, contributing to a better understanding of its epidemiology and potential impact on strawberry production.
The potential of secondary metabolites of Trichoderma viride T1sk extracted with organic solvents etil acetate and butanol in suppressing the growth of Colletotrichum gloeosporioides in vitro Nurbailis, Nurbailis; Yanti, Yulmira; Jamaan, Akmal; Rahayu, Silva Dika
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 1 (2025): 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/jhptt.12576-83

Abstract

The control of Colletotrichum gloeosporioides, the causal agent of anthracnose in chili, is typically achieved through synthetic fungicides, which pose risks to both the environment and consumers. As a safer alternative, microbial-derived biopesticides offer an environmentally friendly solution. This study aimed to evaluate the potential of secondary metabolites produced by Trichoderma viride T1sk, extracted using organic solvents with different polarities (ethyl acetate and butanol), to inhibit the growth of C. gloeosporioides in vitro. A Completely Randomized Design (CRD) was used, comprising three treatments with six replications, each consisting of two petri dish units. The treatments included: (A) ethyl acetate extract, (B) butanol extract, and (C) a control. The media poisoning method was employed to assess the antifungal activity of the extracts. Key parameters observed were colony area, conidial count, conidial germination rate, and propagule density of C. gloeosporioides. The results demonstrated that both ethyl acetate and butanol effectively extracted antifungal secondary metabolites from T. viride T1sk. In general, these metabolites significantly suppressed the growth of C. gloeosporioides. Among the solvents tested, butanol exhibited the highest efficacy in extracting antifungal compounds and consistently achieving the strongest inhibition across all observed variables.
The Effect of media types on the growth of insect pathogenic fungi (Aschersonia placenta) Sudiarta, I Putu; Hartha , I Komang Gede Suweca; Yuliadhi , Ketut Ayu; Wirya, Gusti Ngurah Alit Susanta; Selangga, Dewa Gede Wiryangga; Suputra , I Putu Wirya; Listihani, Listihani
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 1 (2025): 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/jhptt.12554-62

Abstract

Bali has favorable conditions for the production and expansion of citrus plantations. However, citrus cultivation in Bali often faces challenges, including reduced yield caused by pest infestations and pathogenic diseases. One significant pest affecting citrus plants is the whitefly. A potential method for controlling whiteflies is the use of natural enemies. The entomopathogenic fungus Aschersonia placenta is one of natural enemy that can effectively manage whitefly infestations. However, the succesful utilization of A. placenta requires a specialized approach, particularly in selecting an appropriate growth medium. This study aimed to investigate the impact of different growth media on the development of the entomopathogenic fungus A. placenta. The research began with field sampling, followed by the isolation and morphological identification of A. placenta to obtain a pure culture. Subsequently, media tests were conducted to evaluate fungal growth. Nine treatments were implemented to examine the impact of different media: (1) Water Agar (WA), (2) Potato Dextrose Agar (PDA), (3) Potato Sucrose Agar (PSA), (4) Water Agar + Weaver Ant Eggs Flour (WA-WAEF), (5) Potato Dextrose Agar + Weaver Ant Eggs Flour (PDA -WAEF), (6) Potato Sucrose Agar + Weaver Ant Eggs Flour (PSA-WAEF), (7) Water Agar + Cricket Flour (WA-CF), (8) Potato Dextrose Agar + Cricket Flour (PDA-CF), and (9) Potato Sucrose Agar + Cricket Flour (PSA-CF). The results demonstrated that incorporating cricket insect flour (Gryllidae: Orthoptera) or weaver ant egg flour (Oecophylla smaragdina) into potato sucrose media provided the most optimal growth environment for A. placenta.
Molecular characterization and effectiveness cross-protection of weak strains against super-infection malignant strains Cucumber mosaic virus (CMV) on cayenne pepper (Capsicum annuum L.) in Lampung, Indonesia Mahfut, Mahfut; Sari, Mai; Akin, Hasriadi Mat; Wahyuningsih, Sri; Irawan, Bambang
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 1 (2025): 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/jhptt.12563-75

Abstract

Cayenne pepper (Capsicum annuum L.) is a horticultural crop of significant economic importance. One of the major threats to its cultivation is the Cucumber mosaic virus (CMV), which can cause severe yield losses and crop failures. This study aimed to isolate weak CMV strains from natural populations of cayenne pepper, characterize their molecular properties, and evaluate the effectiveness of cross-protection conferred by weak strains against superinfection by virulent CMV strains. The research was conducted in three stages: virus isolation, molecular characterization, and evaluation of cross-protection effectiveness. Data analysis was performed using the MEGA v.11.0.11 software and analysis of variance (ANOVA). The findings identified the C1 isolate as a highly virulent CMV strain. Molecular analysis of naturally infected samples confirmed the presence of CMV through the amplification of specific DNA bands. Inoculation tests revealed distinct differences between weak and malignant strains, particularly in symptom severity and molecular characteristics, such as genetic distance. Furthermore, the weak strains demonstrated a protective effect, significantly reducing the infection rate of virulent CMV strains. This was evidenced by variations in symptom expression, disease severity, plant resistance, chlorophyll levels, carbohydrate content, and peroxidase enzyme activity. These findings highlight the potential application of weak CMV strains in developing disease management strategies for cayenne pepper cultivation.
Biology and demographic statistics of the green leafhopper (Nephotettix virescens Distant) as the main vector of tungro virus in tungro-resistant rice varieties Hutasoit, Rudi Tomson; Widiarta, I Nyoman; Jihad, Muhammad; Sitorus, Alfonso; Susilawati, Susilawati; Puspitasari, Mahardika
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 1 (2025): 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/jhptt.12596-105

Abstract

Tungro disease is one of the major constraints to rice production in Indonesia. Although tungro-resistant rice varieties have proven effective in reducing the spread of the virus, it is essential to consider their impact on the development of vector insect populations. This study aims to investigate the biology and demographic characteristics of Nephotettix virescens Distant on various tungro-resistant rice varieties. The research was conducted by maintaining and observing the development of N. virescens on the tungro-resistant varieties Inpari 7, Inpari 8, Inpari 9, Inpari 36, and Inpari 37, as well as the susceptible variety Taichung Native 1 (TN 1), under controlled environmental conditions with regulated temperature and humidity. Development was observed daily until the last individual died. The results indicated that the life cycle, longevity, and lifespan of N. virescens maintained on tungro-resistant varieties differed significantly from those on the susceptible variety TN 1. The life cycle of N. virescens on Inpari 7, Inpari 8, Inpari 9, Inpari 36, and Inpari 37 was 27.57, 30.50, 27.60, 30.80, and 31.64 days, respectively, whereas on the susceptible variety TN 1, it lasted only 24.94 days. Demographic statistical analysis revealed that the net reproductive rate (R?) and intrinsic rate of increase (r) of N. virescens maintained on tungro-resistant varieties were lower than those on the susceptible variety TN 1. Additionally, these tungro-resistant varieties resulted in a longer generation time (T) and doubling time (DT). Consequently, the tungro-resistant varieties negatively affected the vector by prolonging its life cycle, increasing the average generation time (T) and doubling time (DT), and reducing both the net reproductive rate (R?) and the intrinsic rate of increase (r). These five varieties can be considered as options for varietal rotation to suppress the growth of insect vector populations and limit the spread of the tungro virus, especially in tungro-endemic areas.
Analysis of sesame phyllody disease using transmission electron microscopy and intersimple sequence repeat-polymerase chain reaction Haj Ali, Mayadah A.; Kheder, Ahmed A.; Hamwieh, Aladdin
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 25 No. 1 (2025): 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/jhptt.12584-95

Abstract

Sesame phyllody disease caused by phytoplasma has been identified in Egypt as a devastating phytopathogenic mollicute, However, the genetic diversity of phytoplasma infecting sesame plants in Egypt, as revealed by Intersimple Sequence Repeats-Polymerase Chain Reaction (ISSRs-PCR), has not been fully explored. During 2021–2022, sesame plants exhibiting virescence, phyllody, proliferation, and witches’ broom symptoms were observed in various fields across the Faiyoum, Luxor, and Beheira governorates in Egypt. This study aims to identify phytoplasma using transmission electron microscopy (TEM) and ISSRs-PCR. The methodology includes sampling, pathogenicity testing, TEM analysis of ultrathin sections, nested polymerase chain reaction (nested-PCR) targeting the 16S rRNA gene, and clustering analysis using 15 ISSRs primers. Phytoplasma was successfully transmitted to healthy plants through grafting and dodder transmission, with success rates of 80% and 90%, respectively. TEM analysis revealed polymorphic phytoplasma bodies and extensive phloem necrosis. Nested-PCR produced 1250 bp amplicons for all isolates. Phylogenetic analysis showed that the Beheira isolate (“OP185273.1”) is closely related to the peanut WB group. DNA polymorphic fragments ranged from 1 to 10 per profile, with fragment sizes between 150 and 1500 bp. Cluster analysis revealed that only two isolates (Faiyoum and Beheira) clustered together. This study demonstrates the effectiveness of ISSR-PCR in detecting and analyzing phytoplasma infecting sesame plants in Egypt.

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