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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
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The changes of chili leaf structure by Geminivirus infection Taufik, Muhammad; Firihu, Muhammad Zamrun; HS, Gusnawaty; Variani, Viska Inda; Hasan, Asmar; Botek, Muhammad; Tihurua, Eka Fatmawati; Wulansari, Tri Yuni Indah
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 24 No. 1 (2024): 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.124109-119

Abstract

The Geminivirus in chili plants is a significant problem in chili cultivation. Symptoms of Geminivirus infection are quite easy to find in chili plants because the symptoms are quite typical: mosaic, yellowing, small leaves, leaf lamina malformation, and stunting. The visual changes in leaf morphology are due to the leaf tissue structure, such as the upper and lower epidermis and the mesophyll tissue, including the palisade and sponge. There is little information about changes in the structure of chili plants infected with the Geminivirus. Therefore, this study aims to add information about changes in the leaf tissue structure of chili plants infected with the Geminivirus. The structural changes observed were palisades. Long palisades were less preferred by whiteflies, so the incidence of geminivirus disease was lower. This information is a reference for assembling chili plants with better structural resistance. The method used was a cross-section of chili leaves, double staining, and observation with a light microscope. Observations on mild symptoms showed epidermal cells shrinking. Some parts of palisade leaves were composed of two layers with shortened cells and tend to be oval. The symptom is that the upper epidermal cells were shrunken, and the palisade also tends to shorten. Severe symptoms of the epidermis on the leaves were curly, shriveled, thinned, and even dying; the palisade is shortened and sometimes looks irregular/tight. Changes in the leaf tissue of chili plants infected with the Geminivirus cause changes at the ultra-structural, cell, or tissue level, depending on the type of virus attack and the attack level.
Molecular identification of Trichoderma sp. Margodadi isolate and its potential against Phytophthora capsici causing foot rot of black pepper Prasetyo, Joko; Juniar, Nur Baitullah; Evizal, Rusdi; Maryono, Tri; Ginting, Cipta
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 24 No. 1 (2024): 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.124128-138

Abstract

Trichoderma has the potential to suppress fungal pathogens and thus control plant diseases, including Phytophthora foot rot, which is the most devastating disease of black pepper in Lampung. Identification of a microorganism can not only rely on its morphological characteristics, but it is also necessary to identify it molecularly at the species level. This research was aimed at identifying the fungus Trichoderma sp. Margodadi isolates at the species level and to know the potential of Trichoderma sp. Margodadi isolates and their secondary metabolites to control P. capsici. This research was conducted from March to November 2021 at the Laboratory of Plant Disease, Department of Plant Protection, and the Laboratory of Agricultural Biotechnology, Faculty of Agriculture, University of Lampung. Identification of Trichoderma was done by morphological characteristics and molecular methods. The ability of Trichoderma to suppress P. capsici was tested by dual culture. The effect of secondary metabolites on the growth of P. capsici was determined in vitro at concentrations of 0% (control), 10%, 20%, 30%, and 40%. The experimental design used was a completely randomized design consisting of five treatments repeated five times. The data obtained from the test were analyzed using ANOVA, followed by the LSD test at 5%. The results of this study showed that Trichoderma sp. Margodadi isolate had a close relationship with Trichoderma asperellum and had the ability as an antagonist to inhibit the growth of P. capsici up to 47.23%, and the secondary metabolites produced could inhibit the growth of P. capsici up to 72.53% with the best concentration of 40%.
The effect of tobacco leaf extract dosage on the development of virus disease in curly chili Haryuni , Haryuni; Priyadi, Sapto
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 24 No. 1 (2024): 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.124120-127

Abstract

Curly chili is a horticultural product with high nutritional value, greatly demanded as a distinctive complement or flavoring for dishes due to its unique taste and aroma. Despite the increasing demand for chilies, production has not followed suit, mainly due to disruption caused by viruses transmitted by Bemisia tabaci and Thrips sp. This study aimed to investigate the effect of tobacco extract on the growth and development of viral diseases in curly chili. Conducted at Kwangsang Village, Jumapolo District, Karanganyar Regency, from September to December 2021, the research was designed using a completely randomized block design, with treatment doses of tobacco extract at 0 mL/L, 1 mL/L, 2 mL/L, 3 mL/L, and 4 mL/L, labeled J0, J1, J2, J3, and J4, respectively. The results indicated that the variabels, i.e. plant height, number of leaves, number of fruits, and fruit weight per plant, were significantly affected by the tobacco extract. Similarly, the disease incidence and severity of viral infection were significantly influenced by the tobacco extract application. The yield decrease in curly chili was attributed to virus infection by Bemisia tabaci and Thrips sp., which caused chlorosis and mosaic symptoms on the leaves. Although the affected plants did not die, they experienced a yield reduction. The application of tobacco extract significantly reduced the percentage of incidence and severityof virus infection on curly chili. The highest disease incidence was 35.42% (J0) and disease severity was 70.92% (J0), while the lowest disease incidence was 14.58% (J4) and disease severity was 20.58% (J4).
Unveiling alliinase gene candidates in shallots using resistance gene motif-based degenerate primers Herlina, Lina; Istiaji, Bonjok
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 24 No. 2 (2024): 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.224274-283

Abstract

Shallots are integral to Indonesian daily life, with annual production reaching two million tons. However, the superior varieties are often susceptible to disease, highlighting the need for new resistant varieties. Understanding the genetic basis of disease resistance is crucial for breeding efforts aimed at developing new varieties. Alliinase, an enzyme crucial for garlic defense, is a potential candidate for enhancing shallot resistance. This study aims to identify alliinase gene candidates in shallots using degenerate primers. Genomic DNA from the Bima Brebes genotype was isolated, and degenerate primers successfully amplified 600–800 bp fragments. Three sequences were selected for further analysis, with one sequence showing high similarity to known resistance genes. Multiple sequence alignment revealed characteristic resistance gene motifs, supporting their candidacy as resistance genes. Phylogenetic analysis grouped these sequences with known resistance genes, further supporting their potential. These findings provide valuable insights for breeding programs aiming to enhance resistance in shallots through a molecular breeding approach. The identified alliinase gene candidates can be used to develop disease-resistant shallot varieties. Incorporating these genes into breeding programs can enhance resistance, improving yield and stability in shallot production.
Diversity and community structure of predators in surjan (polyculture) and lembaran (monoculture) paddy fields Trisnawati, Dina Wahyu; Nurkomar, Ihsan; Antono, Andri; Puspitasari, Era
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 24 No. 2 (2024): 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.224162-172

Abstract

Predator diversity decreases because of low ecosystem quality in modern agriculture that applies monoculture systems. However, polyculture systems in paddy fields can improve biodiversity, including pests, natural enemies, and microorganisms. Surjan is a local polyculture farming practice that originated in Yogyakarta. This farming practice consists of raised beds for cultivating palawija or horticultural crops and sunken beds for rice cultivation. Surjan farming may have an impact on predatory diversity and abundance, although this has not been studied. To address this issue, research was carried out to investigate the diversity, abundance, and structure of the community of predators in the paddy fields of surjan (polyculture) and lembaran (monoculture). The field experiment was conducted in three pairs, surjan and lembaran, in Panjatan District, Kulon Progo Regency, Yogyakarta Special Region, Indonesia. In each field, five random plots arranged in a cross pattern were used to collect a sample of predators. Several traps, including sweeping, pitfall traps, yellow adhesive traps, and yellow pan traps, were used to determine the abundance and diversity of predators. Results showed that species diversity, abundance, species composition, and biodiversity index in surjan farming were significantly improved compared to lembaran farming. Ceratopogonidae and Formicidae were the most abundant families in both surjan and lembaran farming, although they are more abundant in surjan. It can be concluded from the study that surjan farming could improve ecosystem quality by implementing predators for pest management.
Effectiveness of bionematicide from Purpureocillium lilacinum in controlling root-knot nematodes (Meloidogyne spp.) Swibawa, I Gede; Fitriana, Yuyun; Solikhin, Solikhin; Fiandani, Ambar; Suharjo, Radix; Purnomo, Purnomo; Susilo, F.X.
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 24 No. 2 (2024): 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.224181-189

Abstract

This research aimed to study the efficacy of the fungus Purpureocillium lilacinum as a bionematicide to control root-knot nematodes (RKN). Two steps of experiments were carried out in this study. The first experiment involved the application of various levels of bionematicide doses to control RKN on tomato plants. The second experiment tested the application of bionematicide (both as a single application and in combination with bromelain compost) to control RKN on guava cv. Kristal. A carbofuran nematicide was applied following the company’s recommendation in this second experiment for comparison. The results of the first trial showed that the application of P. lilacinum bionematicide at doses ranging from 20–40 g per plant or 7–13 g per kg of soil was effective in reducing the J-2 RKN population in the soil and roots, as well as mitigating damage to plant roots. In the second experiment, it was shown that the application of P. lilacinum bionematicide, either alone or mixed with bromelain compost, was more effective than the application of carbofuran nematicide in reducing the J-2 RKN population in the soil and roots, as well as in minimizing root damage to guava seedlings. Additionally, the application of bionematicides mixed with compost proved more effective than their single application in reducing plant root damage. Furthermore, apart from being able to control nematode populations and plant damage, P. lilacinum bionematicide could stimulate plant growth.
The effectiveness of Liliaceae phyllospheric Actinomycetes as biocontrol agent of purple blotch disease (Alternaria porri Ell. Cif) on shallot Wati, Cheppy; Nawangsih, Abdjad Asih; Wahyudi, Aris Tri; Wiyono, Suryo; Munif, Abdul
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 24 No. 2 (2024): 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.224190-198

Abstract

Purple blotch, caused by Alternaria porri, affects leaves and tubers, leading to reduced yields. Traditionally, synthetic chemical fungicides were heavily relied upon for control. As an alternative, biocontrol agents like actinomycetes have gained attention. Some actinomycetes can suppress plant pathogens by producing antifungal compounds. This research aimed to investigate the efficacy of phyllosphere actinomycetes from Liliaceae plants as biocontrol agents against purple blotch disease on shallots in the greenhouse. Conducted at the IPB University Plant Bacteriology and Mycology Laboratory and the greenhouse at Bogor Agricultural Development Polytechnic, West Java, the research involved several stages, including pathogen identification, preparation of actinomyces inoculum and A. porri, and application of actinomycetes biocontrol agents to shallots in the greenhouse. A. porri isolates were obtained from shallot production centers in the Brebes area, Central Java. The use of the actinomycetes from the phyllosphere effectively suppressed purple blotch disease, with the lowest area under the disease development curve (AUDPC) recorded at 635.9% for the CFS28 isolate. Lower AUDPC values indicated slower disease progression. Actinomycetes biocontrol agents showed promising efficacy, with the CFS28 isolate achieving the highest efficacy percentage of 78.37%. Additionally, plant growth was significantly enhanced by actinomycete application, with tuber sizes ranging from 1.44 to 2.06 g, fresh weights from 17.63 to 24.72 g, and dry weights of shallot bulbs from 5.43 to 17.96 g. The incubation period for A. porri could be extended by actinomycetes, ranging from 5.43 to 8.5 days for purple blotch symptoms to manifest on shallots. The use of Actinomyces phyllosphere biocontrol agents holds promise for disease control on other plants’ leaves, contributing to environmentally friendly and sustainable agricultural practices.
Application of Trichoderma Isolate consortium in organic fertilizer for controlling shallot twisted disease Supriati, Lilies; Zubaidah, Siti; Djaya, Adrianson Agus; Oemar, Oesin; Ramadhan, M. M.
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 24 No. 2 (2024): 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.224233-242

Abstract

The aim of the research was to determine the effect of applying a consortium of Trichoderma spp. isolates to a type of organic fertilizer that is effective in controlling twisted disease and on the growth and yield of shallot plants. The study utilized a completely randomized design (CRD) consisting of eight treatments with four replications. The treatments examined werea= as follows: P0 = control, P1 = 5 tons per ha of chicken manure fertilizer, P2 = 5 tons per ha of chicken manure fertilizer and consortium of two Trichoderma spp. isolates, P3 = 5 tons per ha of chicken manure fertilizer and consortium of three Trichoderma spp. isolates, P4 = 5 tons per ha of chicken manure fertilizer, 20 tons per ha trichocompost, and a consortium of two Trichoderma spp. isolates, P5 = 5 tons per ha of chicken manure fertilizer, 20 tons per ha trichocompost, and consortium of three Trichoderma spp. isolates, P6 = 20 tons per ha of trichocompost and a consortium of two Trichoderma spp. isolates, and P7 = 20 tons per ha of trichocompost and a consortium of three Trichoderma spp. isolates. The results showed that the twisted disease incidence in treatment P4 was the lowest (14.52%) at 8 weeks after planting. The plant height was of 39.10 cm, with 29.8 leaves per clump at 7 WAP, and the dried bulb weight was 112.4 g per clump. In conclusion, the application of chicken manure fertilizer at a dose of 5 ton per ha, combined with 20 tons per ha of trichocompost and a consortium of two Trichoderma spp. isolates, could control twisted disease in shallot.
Molecular characterization of Helicoverpa armigera Nucleopolyhedrovirus (HearNPV) on Helicoverpa armigera Hübner larvae (Lepidoptera: Noctuidae) Kusumah, Yayi Munara; Kurniawati, Fitrianingrum; Pramudita, Pajar; Christian, Michael
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 24 No. 2 (2024): 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.224243-250

Abstract

Nucleopolyhedrovirus (NPV) is a type of biological agent that can be effectively used as a bioinsecticide to control the cob borer caterpillar in corn. Among these viruses, HearNPV (Helicoverpa armigera Nucleopolyhedrovirus) stands out due to its host specificity, environmentally safety, and lack of harm to non-target organisms. The primary objective of this study was to elucidate the molecular characteristics of the DNA polymerase gene of HearNPV. To achieve this, caterpillars were collected from the field, then reared and inoculated in the laboratory under controlled conditions. Following propagation, viral genomic DNA was extracted using a modified CTAB (Cetyltrimethylammonium Bromide) protocol, which is commonly employed for its efficiency in isolating high-quality DNA from various sources. Subsequently, DNA amplification was performed using specific primers: forward primer HearNPV F and reverse primer HearNPV R. These primers were designed to target the DNA polymerase gene, a crucial component in viral replication and a key marker for phylogenetic studies. The results of the phylogenetic analysis indicated that the Bogor strains of HearNPV shared a high degree of similarity with NPVs that infect other species within the Helicoverpa genus, including strains from Spain, Australia, Brazil, Russia, and Japan. Specifically, the nucleotide sequence homology ranged from 98.4% to 99.4%, while the amino acid sequence homology ranged from 98.2% to 99.2%. This high level of homology suggests a close evolutionary relationship and potentially similar biological characteristics among these NPV strains.
Corrigendum: Antifungal evaluation of turmeric rhizome extract against Colletotrichum capsici, the causal agent of anthracnose on red-chili peppers (Capsicum annuum L.) Akin, Hasriadi Mat; Anggraini, Desma; Wibowo, Lestari; Prasetyo, Joko; Suharjo, Radix
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 24 No. 2 (2024): 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.224295-295

Abstract

A corrigendum on Antifungal evaluation of turmeric rhizome extract against Colletotrichum capsici, the causal agent of anthracnose on red-chili peppers (Capsicum annuum L.) by Akin, HM, Aggraini D, Wibowo L, Prasetyo J & Suharjo R. 2024. J. Trop Plant Pests Dis. 24(1): 75–81. https://doi.org/10.23960/jhptt.12475-81 In the original article, on page 77, the formula for disease intensity has an incomplete legend.  The authors apologize for this mistake and clarify that it does not affect the scientific conclusions of the article. The original version has been corrected Read original article > 

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