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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 521 Documents
PENGARUH FRAKSI AKTIF KULIT BATANG DYSOXYLUM ACUTANGULUM MIQ. (MELIACEAE) TERHADAP REPRODUKSI CROCIDOLOMIA PAVONANA (F.) (LEPIDOPTERA: PYRALIDAE) Edy Syahputra, Djoko Prijono, dan Partomuan Simanjuntak .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 2 No. 1 (2002): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (91.454 KB) | DOI: 10.23960/j.hptt.121-7

Abstract

Effects of an active fraction of stem bark of Dysoxylum acutangulum Miq. (Meliaceae) on reproduction of Crocidolomia pavonana (F.) (Lepidoptera: Pyralidae). This study was conducted to determine the effect of an active fraction of Dysoxylum acutangulum stem bark on reproduction and longevity of the cabbage pest Crocidolomia pavonana. The feeding treatment with the test material was given to the second-instar larvae C. pavonana at concentrations of 2.54, 3.29 and 3.93 ppm (equivalent to LC10, LC30 and LC50), then the emerging adults were observed for their fecundity, ovarial protein content and longevity. The treatment with the test material at LC50 shortened the lifespan of adult males and females C. pavonana by 2.9 and 1.6 days, respectively, compared with controls. The treatments at LC10, LC30 and LC50 decreased the fecundity of the adult females by 44.0, 64.7 and 58.1%, respectively, compared with controls, and this effect could be associated with the decrease in protein content of ovaries of the females (29.0, 47.8 and 42.8% decrease, respectively). Such treatments also delayed the maturity of ovaries of the females. Suppression of reproductive capacity of C. pavonana could contribute significantly to overall suppression of the pest population if the test material is used in the field.
KEEFEKTIFAN TIGA JENIS INSEKTISIDA NABATI TERHADAP KUTU PUTIH PEPAYA PARACOCCUS MARGINATUS DAN KEAMANANNYA TERHADAP LARVA KUMBANG PREDATOR CURINUS COERULEUS Ahmad Sifa; Djoko Prijono; Aunu Rauf
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 13 No. 2 (2013): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (115.702 KB) | DOI: 10.23960/j.hptt.213124-132

Abstract

Effectiveness of three botanical insecticides against the papaya mealybug Paracoccus marginatus and their safety to the predatory Curinus coeruleus larvae. Preparations of Tephrosia vogelii (Tv) leaf extract (0.5% and 1% w/v), Annona squamosa (As) seed extract (0.5% and 1%), and Cinnamomum multiforum (Cm) leaf essential oil (1% and 2%), and their mixtures (Mix-1: Tv 0.25% + As 0.25% + Cm 0.5%; Mix-2: Tv 0.5% + As 0.5% + Cm 1%) were tested for their effectiveness on third-instar nymphs of Paracoccus marginatus by spraying the test materials on undetached papaya leaves and by direct spraying on the test insects using Potter spray tower. Tv extract was also applied on the test insects placed on undetached papaya leaves. The safety test was done by direct spraying of the test materials on the predatory Curinus coeruleus larvae using Potter spray tower. Tv and As extracts at a concentration of 1% each are potential to be used for the control of P. marginatus. Spraying of T. vogelii extract on the test P. marginatus nymphs placed on papaya leaves was more effective than spraying of the test materials on papaya leaves or direct spraying on the test insects only. The treatment with Cm essential oil required twice the concentration of Tv and As extracts to obtain the same level of effectiveness. The treatment with Mix-2 caused lower P. marginatus mortality than the sum of mortality caused by its components applied separately. Nonetheless, the three botanical insecticides and their mixtures were safe to C. coeruleus larvae. On the other hand, although the synthetic insecticide imidacloprid (neonicotinoid), included in the study for comparison, was effective against P. marginatus, it was also toxic to the predatory C. coeruleus larvae so its use should be avoided or limited.
PYRAMIDING IMPORTANT DISEASE-RESISTANT CHARACTERS BY HYBRIDIZATION OF TRANSGENIC AND NON-TRANSGENIC PEANUTS (ARACHIS HYPOGAEA L.) Dwi Hapsoro; Hajrial Aswidinnoor; Rusmilah Suseno; . Jumanto; . Sudarsono
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 10 No. 2 (2010): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (187.785 KB) | DOI: 10.23960/j.hptt.21091-99

Abstract

We have produced transgenic peanut lines carrying a coat protein gene of peanut stripe virus (PStV) and showing resistance to the virus. However, their susceptibility to leafspot disease caused by Cercospora sp. and their lower productivity compared to their genetic background cultivar make them commercially less undesireable. The objective of this research was to test whether crossing the transgenic peanut plants with a non-transgenic peanut line WS, which was resistant to leafspot disease and high-yielding, could produce progenies in F2 generation that were resistant to both PStV and leafspot disease as well as of higher yield campared to their transgenic progenitor. If this test was proven, pyramiding novel transgenic and non-transgenic characters in peanut plants by hybridization would probably be a routine procedure in the future. Crosses were made between transgenic peanut plants that were resistant to PStV and non-transgenic peanut line WS. F2 population was evaluated for resistance to PStV and leafspot disease. Number of filled pods, filled pod dry weight per plant, and dry weight of each pod were measured. Result of the experiment showed that some of the plants in F2 population exhibited resistant both to PStV and leafspot disease and produced higher number of filled pods, filled pod dry weight per plant, and dry weight of each pod compared to those produced by their transgenic parent plants.
TINGKAT SERANGAN DAN JENIS LALAT PENGOROK DAUN PADA TIGA VARIETAS LOKAL BAWANG MERAH DI LEMBAH PALU SULAWESI TENGAH . Shahabuddin; Alam Anshary; Andi Gellang
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 12 No. 2 (2012): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1555.297 KB) | DOI: 10.23960/j.hptt.212153-161

Abstract

Leafminer (Liriomyza sp.) is an exotic pest that currently has become a new major pest at the onion crops in Palu Valley-Central Sulawesi and it may reduce the yields up to 100%. The study was aimed to investigate the infestation level of leafminer on three local varieties of onion in Palu and to identify the leafminer species infested the onion crops. The experiment was arranged in a completely randomized design with three treatments of local onion varieties (Palu, Palasa, and Tinombo) and six replicates. The onion seeds were grown in plot of 6 x 4 m and five plants were randomely chosen as the samples to observe the percentage of pest infested and the yields. The imago of leafminer from each onion variety were collected and brought to the laboratory for identification. The results showed that the averages of infestation intensity of leafminer were 48.1 % (Palu), 47.6 % (Palasa), and 65.9 % (Tinombo) while the dry weight of bulb per 5 plant samples were 133.3 g (Palu), 120 g (Palasa), 0 g (Tinombo). The results indicated that Palu and Palasa varieties be more resistance to leafminer. The leafminer attacking onion crops in Palu is Liriomyza chinensis as indicated by some morphological characters observed.
PERANAN TOKSIN YANG DIHASILKAN OLEH BOTRYODIPLODIA THEOBROMAE DALAM MENIMBULKAN PENYAKIT DIPLODIA PADA BEBERAPA JENIS JERUK Salamiah .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 9 No. 2 (2009): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1253.335 KB) | DOI: 10.23960/j.hptt.29158-167

Abstract

Role of toxin produced by Botryodiplodia theobromae causes Diplodia Bark Diseases on some citrus. The purpose of the research was to study the role of toxin produced by Botryodiplodia theobromae causes diplodia bark diseases on some citrus. Research was conducted from March through November 2007. The experiment was done at the laboratory and at a glass house of the Department of Plant Pests and Diseases of the Faculty of Agriculture and the laboratory of the Faculty of Science and Mathematics Lambung Mangkurat University in Banjarbaru. For a leaf-necrosis bioassay of crude toxin production, the surfaces of the leaves were scratched near the center with a needle, and culture filtrate samples (50 µl) were placed on each wounded site. Treated leaves were incubated in a moist chamber with light at 26oC for 4 days, and toxin activity was determined by induction of veinal necrosis on the seven susceptible cultivar of citrus. The results of the experiment showed that the B. theobromae pathogens produced the toxin. The crude toxin was bioassayed for leaf necrosis to determine their ability to produce toxin. Culture filtrates of the isolate were highly toxic only on five susceptible citrus leaves siam Banjar citrus, sweet orange, lime, kaffir lime, and sour lime, indicating that the B. theobromae can produced toxin. Pathogenicity and toxin production of B. theobromae did not differ among different cultivar. While, no necrotic symptom produces on the pummelo and sunkist. Toxin production of B. theobromae produced during spore germination.
KARAKTERISASI KUTU KEBUL (BEMISIA TABACI) SEBAGAI VEKTOR VIRUS GEMINI DENGAN TEKNIK PCR-RAPD Sudiono dan Nur Yasin .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 6 No. 2 (2006): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (241.813 KB) | DOI: 10.23960/j.hptt.26113-119

Abstract

Characterization of whitefly (Bemisia tabaci) as geminivirus vector based on RAPD-PCR. The variation of whitefly was performed by the appearance of population having diferent DNA sequence. PCR-RAPD and dendogram was expected to be used to investigate the variation of whitefly in Sumatera. Morphological observation on the whitefly colleted from field area showed that the geminivirus-transmitting vector was Bemisia tabaci with varied population. Based on PCR-RAPD and dendogram analysis in Sumatera, it was known that Bemicia tabaci had a high variation both intra and inter field area.
PENGGUNAAN PROTOZOA SARCOCYSTIS SINGAPORENSIS (APICOMPLEXA: SARCOCYSTIDAE) UNTUK PENGENDALIAN TIKUS SAWAH RATTUS ARGENTIVENTER Maryani Cyccu Tobing, Ameilia Zuliyanti Siregar, Lisnawita, dan Meirani.
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 (75.659 KB) | DOI: 10.23960/j.hptt.1939-45

Abstract

The use of protozoan Sarcocystis singaporensis (Apicomplexa: Sarcocystidae) for control rice field rat Rattus argentiventer. Rats are still a number-one-pest in field rice of various areas in Indonesia. Biological control using microparasite Sarcocystis singaporensis (Apicomplexa: Sarcocystidae) is a highly host-specific protozoan for controlling the rats. The objective of this research was to study the use of protozoa parasite S. singaporensis against rodent pest Rattus argentiventer. The design of experiment was Factorial Randomized Complete Design with ten treatments and four replications. The first factor was sporocyt doses of S. singaporensis (control; 1 x 105; 2 x 105; 3 x 105; 4 x 105), while the second factor was rats sexual category (male and female). The results showed that dose of sporocysts S. singaporensis was significantly different but rats’ sexual category has no effect on the treatments. The highest mortalities was on dose 4 x 105 (100%) at 12.08 days, food consumption decreased two to four days before rats died, weight of rats decreased because of the infection of S. singaporensis.
PENGARUH PERLAKUAN SORTASI, NATRIUM HIPOKLORIT DAN FUNGISIDA PADA KACANG TANAH UNTUK MENGELIMINASI KONTAMINASI ASPERGILLUS FLAVUS Sholeh Avivi .
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 (91.656 KB) | DOI: 10.23960/j.hptt.1558-65

Abstract

The Effect of Sorting, Sodium hypochloride (NaClO), and Fungicide Treatment on Peanut in Elimination the Aspergillus flavus Contamination. The humid tropical condition of Indonesia, the post harvest treatment, and the storage practices favour rapid growth and wide spread Aspergillus infestation on peanut. The objectives of this research was to find the best technique in controlling the Aspergillus infection on peanut. To achieve those objectives, complete randomised design in factorial with three factors was applied. The factors were grading and colour sorting (A1 = grading and colour sorting; A2 = without grading and colour sorting), NaClO blanching (B1 = without blanching; B2 = 1.25% NaClO blanching; B3=2.5% NaClO blanching), and Benlate T-20 WP treatment (C1 = 2,5 g/L; C2 = 3 g/L; C3 = 3,5 g/L). The result showed that the best combination treatment was A2B2C3 with the minimum amount of spore on peanut seed. With those combination treatment we concluded that the grading and colour sorting, the 1.25% NaClO blanching, and the application of 3,5 g/L Benlate T-20 WP could reduced the Aspergillus contamination up to 80% compare with A1B1C3 treatment.
KARAKTERISTIK PSEUDOMONAS VIRIDIFLAVA: PENYEBAB PENYAKIT BUSUK LUNAK DAN EVALUASI VIRULENSINYA PADA KLON ANGGREK PHALAENOPSIS . Hanudin; Indijarto Budi Rahardjo
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 11 No. 2 (2011): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (495.072 KB) | DOI: 10.23960/j.hptt.211185-193

Abstract

The objectives of this research were to determine the typical symptoms and isolates chararteristics of Pseudomonas viridiflava as the causal agent of soft rot bacterial disease and to find out orchid Phalaenopsis clones resistant to the disease. The scope of this study included exploration and isolation of the pathogens, pathogenicity, biochemical and LOPAT tests, also screening the Phalaenopsis F1 clones resistant to the pathogen. The results showed that isolates Vd-6, Ph-7 and Ph-18 obtained from Vanda (in Bandung Nursery) and Phalaenopsis orchids respectively, in glass house of Indonesian Ornamental Crops Research Institute, were identified as P. viridiflava and highly virulent on tested orchid plants. Typical symptoms were soft rots characterized by moist and watery decay of the whole leaves, which were initiated as small water-soaked lesions and enlarged rapidly to the entire leaves. Based on biochemical and LOPAT tests, the causal organisms were fluorescent green colonies in King’s B medium, not producing levan compound and arginine hydrolase reaction. Pectinolytic activities on potato and tobacco hypersensibility were also positive. According to evaluation test, 10 F1 accecions Phalaenopsis clones (VL 231, VL 232, VL 233, and VL 240; M22.213 and M22.223; 599.201, 599.205, 599.215 and 599.243) were resistant to that pathogen.
POPULASI DAN SERANGAN KUTU PUTIH PEPAYA, PARACOCCUS MARGINATUS (HEMIPTERA: PSEUDOCOCCIDAE) PADA TANAMAN PEPAYA DI DAERAH DATARAN RENDAH SUMATERA SELATAN Rosdah Thalib .; Rossi Fachrullah Rozi; Triani Adam .; Khodijah . .; Siti Herlinda .
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 (872.28 KB) | DOI: 10.23960/j.hptt.214136-141

Abstract

Populations and damage by the papaya mealybug Paracoccus marginatus (Hemiptera: Pseudococcidae) on papaya inlowland areas of South Sumatera. One of the main problems in papaya cultivation today is the presence of a newlyintroduced pest, the white papaya mealybug, Paracoccus marginatus (Hemiptera: Pseudococcidae). This study aimed toobserve the mealybug populations and its damage percentage in papaya plants and to identify its host plants in SouthSumatera. The study was carried out on the fruit and vegetable producing area in Indralaya, South Sumatera. The survey wasconducted on papaya plantation plots with a minimum size of 1000 m2. Data from the observation indicated that populationsof P. marginatus on papaya fruit were not significantly different to those on papaya leaves, except for the first observation inthe rainy season. In general, the percentages of mealybug damages were not affected by the season and the percentages ofdamage on the leaves were not different from those on the fruits of the papaya plants. Inventory of P. marginatus host plantson the area resulted in a total of 12 species of host plants dominated by dicotyledonous plant species. The host plants werefrom 11 families, i.e. Anacardiaceae, Caricaceae, Cucurbitaceae, Euphorbiaceae, Fabaceae, Myrtaceae, Rosaceae, Rutaceae,Sapindaceae, Sapotaceae, and Solanaceae.

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