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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 531 Documents
MORTALITAS, PENGHAMBATAN MAKAN DAN PERTUMBUHAN HAMA DAUN GAHARU HEORTIA VITESSOIDES MOORE OLEH EKSTRAK BUAH BRUCEA JAVANICA (L.) MERR. Agus M. Hariri
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 12 No. 2 (2012): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (118.325 KB) | DOI: 10.23960/j.hptt.212119-128

Abstract

The bioassay of Brucea javanica fruit extract was performed to evaluate lethal and antifeedance effect as well as growth inhibition against agarwood defoliator Heortia vitessoides. Three types of Brucea (unripe, ripe, and dried fruits) were extracted with maceration method in aquadest for 24 hours. Tests were done using leaf-residual method. The results showed that mortality of H. vitessoides larvae was significantly higher when applied with Brucea extract at concentration 50 g/l compared to control starting at two days after application. Moreover the dried fruit extract killed all insect test in three days after application. The other result indicated that pupation of agarwood defoliator was less than 10% and emerging adult was 0% when applied with Brucea fruit extracts. In addition, at two days after application of ripe and dried fruit extracts resulted antifeedance effect against H. vitessoides larvae 68-70% leaves weight and 74-77% based on eaten leaf area.
SKRINING DAN UJI ANTAGONISME JAMUR TRICHODERMA HARZIANUM YANG MAMPU BERTAHAN DI FILOSFER TANAMAN JAGUNG Efri, Joko Prasetyo, dan Radix Suharjo .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 9 No. 2 (2009): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (333.486 KB) | DOI: 10.23960/j.hptt.29121-129

Abstract

Screening and antagonism test of Trichoderma harzianum which are survived on the corn phyllosphere. The research was conducted to find Trichoderma harzianum that could survive on the corn phyllosphere which still have good antagonism capability. Five isolates T. harzianum were used in the research. Spore suspension of each isolate T. harzianum (108 spore/ml) was sprayed to the 21 days after planting corn phyllosphere in the afternoon. Reisolation in order to obtain the isolates which were was conducted in 1 – 22 days after spraying. To the extend that 3 isolates (from T. sprayed before harzianum) that could survive on the corn filosfeer and have the best antagonism capability then collected. Antagonism test was carried out using dual culture method. Phytophthora capsici was used as the antagonism object. The result showed that T. harzianum could survive until 22 days after spraying (DAS) on the last leaves (isolate 1, 2,3 and 5). On the second leaves, T. harzianum could survive 17 DAS Isolate 4 and 5) , and 20 DAS (isolate 5) on the meristem leaves. Antagonism test showed isolate 1 from reisolated from the last leaves (ThRI1), isolate 4 reisolated from the second leaves (ThDI4) dan isolate 5 reisolated from meristem leaves (ThTI5) were 3 isolates that have the best antagonism capability.
PARASITISASI DAN KAPASITAS REPRODUKSI COTESIA FLAVIPES CAMERON (HYMENOPTERA: BRACONIDAE) PADA INANG DAN INSTAR YANG BERBEDA DI LABORATORIUM Purnomo .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 6 No. 2 (2006): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (44.743 KB) | DOI: 10.23960/j.hptt.2687-91

Abstract

Parasitization and reproductive capacity of Cotesia flavipes Cameron (Hymenoptaera: Braconidae) on different hosts and instar in laboratory. C. flavipes is an important parasitoid on sugar cane spotted borer, Chilo sacchariphagus Bojer. The biology informations of C. flavipes is needed in order to make more effective as acontroling agent. The objectives of this research were to investigate the effect of host species (C. sacchariphagus, C. auricilius, Scirpophaga nivella) and different instar on parasitization and reproductive capacity of C. flavipes. The results showed that the best host for C. flavipes is C. sacchariphagus and at fifth instar of C. sacchariphagus.
PARAMETER DEMOGRAFI PARASITOID HEMIPTARSENUS VARICORNIS (GIRAULT) (HYMENOPTERA: EULOPHIDAE) PADA LALAT PENGOROK DAUN LIRIOMYZA HUIDOBRENSIS (DIPTERA : AGROMYZIDAE) Sulaeha, Aunu Rauf , dan Nina Maryana .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 9 No. 1 (2009): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (133.884 KB) | DOI: 10.23960/j.hptt.198-14

Abstract

Demographic parameter Parasitoid Hemiptarsenus varicornis Girault (Hymenoptera: Eulophidae) on Leafminer Liriomyza huidobrensis. Hemiptarsenus varicornis Girault (Hymenoptera: Eulophidae) is the most common parasitoid associated with larvae of potato leafminer Liriomyza huidobrensis (Blanchard) (Diptera: Agromyzidae) in Indonesia. The leaf miner was reared on redbean. Demographic parameters was determined by observation of 50 larvae. Daily mortality and fertility were calculated using a life table analysis. Life table analysis showed that the net reproductive rate (Ro) was 18.021 females per generation, instrinsic growth rate ( r ) was 0.208 female offspring per female per day, limited increased rate ( ë ) was 1.231 individuals per day, generation time ( T ) was 13.9 days, and total reproduction value (RVx) was 80.847 and its peak was reached when adults were three days old. Leslie matrix simulation showed proportions of parasitoid’s egg, larva, pupa, and adult. Which are 35%, 30,6%, and 18%, respectively were stabilized since 40 days after release.
ASOSIASI KETERJADIAN KOLONI VERTICILLIUM DAN INTENSITAS NAUNGAN SERTA LETAK DAUN KOPI Subli Mujim, Rudi Ruswandi, Cipta Ginting, dan Rusdi Evizal .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 5 No. 1 (2005): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (83.113 KB) | DOI: 10.23960/j.hptt.1532-36

Abstract

Association of Verticillium colony intensity and shade and coffee leaf position. Since conventional control methods of leaf rust of coffee is still unsatisfactory, it is needed to study toward the possibility of using biocontrol agents including factors that may influence the occurrence of the agents. The objective of this study was to determine the strength of the association of Verticillium colony occurrence and shade and leaf position. Leaf samples were taken from four sites at three coffee fields at Sumberjaya Sub district, West Lampung. Samples were taken from plants with and without shade. From each shade level, leaves showing symptoms were taken from the plants and from the ground (fallen leaves). The samples were placed individually on plastic bag and transported to the laboratory, where the samples were incubated for four days at room temperature. The proportion of lesion caused by H. vastatrix on coffee leaves that showed whitish Verticillium colonies was recorded and modified to score 0 (without Verticillium colony) to 4 (colony 50% or more). Data were analyzed with log linear saturated model. Data suggested that the occurrence of Verticillium colony was higher on plant with canopy compared to that on plants without canopy. In addition, Verticillium occurred more frequently on leaves still on the plants compared to that on leaves on the ground. Canopy factor was relatively stronger than leaf position factor in influencing the occurrence of Verticillium colony.
EFIKASI TRICHODERMA HARZIANUM DENGAN BERBAGAI BAHAN ORGANIK DALAM PENGENDALIAN PENYAKIT BUSUK PANGKAL BATANG PADA LADA Cipta Ginting; Tri Maryono
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 11 No. 2 (2011): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (368.407 KB) | DOI: 10.23960/j.hptt.211147-156

Abstract

The objective of this research was to determine the influence of the kinds of organic matter on the efficacy of Trichoderma harzianum Rifai to control foot rot of black pepper caused by Phytophthora capsici Leonian. Trichoderma spp. were isolated from suppressive and non-suppressive soils taken from black pepper fields with high disease incidence. Screening of Trichoderma spp. isolates was conducted through antagonistic test with dual culture technique. Treatments were arranged in a completely randomized design with six replications. Treatments were rice husk, rice straw, wood dust, Arachis pintoi, mixture of the four organic matters, the mixture without T. harzianum, and without organic matter. The test was conducted in greenhouse with media consisted of soil, organic matter, and sand (2 : 2 : 1, v/v). After being otoclaved, the medium was infested with T. harzianum and P. capsici each with five mycelium plugs of 1-cm diameter. Black pepper seedlings were planted 5 days after fungal infestation. After planting the seedlings, five leaf cuts were partly inserted into the soil on each pot. The variables observed were disease incidence on the leaf cuts inserted into the soil and disease severity on the stems and roots. The results show that all 16 Trichoderma isolates inhibited P. capsici colonies and some isolates showed stronger inhibition than the others. T. harzianum reduced disease severity, but there was no effect of the kinds of organic matter on the ability of T. harzianum to control foot rot.
KEMAMPUAN BAKTERI ENDOFIT TANAMAN SEMANGKA DALAM MENEKAN PERKEMBANGAN PENYAKIT BERCAK DAUN YANG DISEBABKAN OLEH JAMUR COLLETOTRICHUM SP. Eryna Elfasari Rangkuti; Dwi Suryanto .; Kiki Nurtjahja .; Erman Munir .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 14 No. 2 (2014): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (408.67 KB) | DOI: 10.23960/j.hptt.214170-177

Abstract

Ability of watermelon endophytic bacteria to suppress development of leaf spot disease caused by Colletotrichum sp. A studi on assay of endophytic bacteria to control Colletotrichum sp., causal agent of leaf spot disease on watermelon, was conducted. Colletotrichum sp. was isolated from infected leaf of leaf spot disease, while endophytic bacteria were isolated from stem, leaf, and root of watermelon healthy plant. Antagonistic assay was conducted by dual culture method. Hyphal abnormalities as a result of antagonistic assay was observed using light microscope. To determine the ability of endophytic bacterial isolates to control leaf spot disease, watermelon seeds were treated by dipping the seed in endophytic bacterial suspension. Seven endophytic bacterial isolates showed to inhibit Colletotrichum sp. to some extent. Two isolates DS 01 and BS 01 showed relatively high inhibition zone compared to others, therefore were choosen for further study. Abnormal hyphae such as broken, lysis, twisted, curled, and swollen hyphae were recorded as the result of antagonistic assay. Watermelon seed treatment revealed that dipping the seed in endophytic bacterial suspension of DS 01 and BS 01 reduced leaf spot disease to 12 and 24%, but inhibited seed growth by 12% and 44%, respectively. It seemed that all treatments showed to reduce seedling performance i.e seedling height, leaf number, and dry weight, compared to that of (-) control. DS 01 however seemed to increase dry weight of watermelon plants.
ASPEK FISIOLOGIS DAN BIOKIMIAWI INFEKSI JAMUR PATOGEN TUMBUHAN Abdul Gafur .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 3 No. 1 (2003): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (118.258 KB) | DOI: 10.23960/j.hptt.1321-28

Abstract

Physiological and biochemical aspects of plant fungal pathogen infections. Interaction between plants and pathogens is a major subject of interest in the field of contemporary plant pathology. Specificity of this kind of interaction is a very comprehensive phenomenon involving complicated mechanisms at different levels. Elucidation of this phenomenon including physiological and biochemical aspects is therefore an important task. From this point of view, enzymes play one of the most important roles in the infection process and pathogenesis. Our current understanding in this area is quite limited. A relatively limited number of enzymes have so far been studied in relation to the infection process and pathogenesis in plants. In this review, ivolvement of the enzymes, i. e. cutinases, esterases, hydrolases, lyases, cellulases, depolymerases and proteases, during the pathogenesis and their role in different stages of disease development is analyzed.
ISOLASI DAN IDENTIFIKASI PATOGEN GETAH KUNING MANGGIS MELALUI PENDEKATAN POSTULAT KOCH DAN ANALISIS SECARA MOLEKULER I Ketut Suada; Ni Wayan Suniti
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 14 No. 2 (2014): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (236.188 KB) | DOI: 10.23960/j.hptt.214142-151

Abstract

Isolation and identification of mangosteen yellow latex pathogen through Koch’s Postulate application and molecular analysis. The yellow latex disease decreases fruit quality of mangosteen because exogenic latex causes dirty fruit and the endogenic latex makes the bitter fruit taste and does not deserve to be consumed. The causal agent of the disease caused phusilogical disorder so that cells break due to unstability of cell turgor, the drift irrigation treatment was able to decrease the disease of 35.22%, therefore the causal agent could be microbe that promote the yellow latex. This research was aimed to find the yellow latex pathogens with its characteristics. The Koch Postulate was apllied to isolate and proved the microbes associated to the yellow latex and molecular analysis was constructed subsequently to find the microbe species.  The result of the research proved that there were three fungus species as the biotic agent responsible to the disease. The fungus were Verticillium albo-atrum with the highest pathogenecity ( 74.87%), followed by Fusarium oxysporum ( 70.15%), and Pestalotia macrotricha (20.32%).
Induksi Ketahanan terhadap Penyakit Hawar Daun Bakteri pada Tanaman Padi di Lapangan Menggunakan Rizobakteri Indigenos Andi Khaeruni; Abdul Rahim; Syair .; Adriani .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 14 No. 1 (2014): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (66.781 KB) | DOI: 10.23960/j.hptt.11457-63

Abstract

ABSTRACTInduced resistance to bacterial leaf blight disease in rice field by indigenous rhizobacteria. Bacterial leaf blight is the most important disease on paddy at Southeast Sulawesi. Utilization of biological agents that induce plant resistance is an alternative tool to control bacterial leaf blight disease on paddy. The aim of the experiment was obtain rhizobacteria that were able to stimulate the growth of paddy plants as well induce plant resistance towards bacterial leaf blight in the field. All experiment units were arranged with a factorial design in a randomized complete block design. The first factor was the rhizobacteria isolates, consisting 4 treatments, i.e: without rhizobacteria (R0), isolate P11a (R1), isolate PKLK5 (IR2), and mixture P11a and PKLK5 (R3), the second factor is paddy varieties, (V1): IR64 variety, (V2): Cisantana variety. The pathogen was inoculated on leaf when 45 day after crop. Weekly observation of disease severity, vegetative plant growth (leaf and stem numbers), and yield were conducted. The results showed that the 10 isolates of rhizobacteria tested were able to induce plant resistance toward bacterial leaf blight, stimulated vegetative growth as well as increased yield of paddy plant. Rhizobacteria application could increase the resistance of paddy toward Xanthomonas oryzae pv. oryzae. The application rhizobacteria could increase the vegetative plant growth, application mixture P11a and PKLK5 isolates showed higher resistance than single application in terms of plant growth and yield, both IR64 and Cisantana varietes

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