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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
EVALUASI KOMBINASI ISOLAT TRICHODERMA MIKOPARASIT DALAM MENGENDALIKAN PENYAKIT AKAR PUTIH PADA BIBIT KARET Suwandi .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 8 No. 1 (2008): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (76.937 KB) | DOI: 10.23960/j.hptt.1852-55

Abstract

Evaluation of mycoparasitic Trichoderma isolate mixtures to control white root disease on rubber seedlings. Eight isolates of mycoparasitic Trichoderma, as single cultures or in isolate mixtures were tested for their biocontrol efficacy against rubber seedlings inoculated with one of three strains of Rigidoporus lignosus. Biocontrol efficacy of isolates was varied, but not significantly affected by strains of R. lignosus. Mixtures of four isolates were significantly (P < 0.05) reduced the disease severity and percentage of root necrotic as compared to mixtures of two isolates as well as single isolates. The highest disease suppression (65% relative to control) and reduction of inocula on rubber wood sticks (91% relative to control) was achieved in four isolate mixtures of Trichoderma virens (T1+T4+ T9+ T11).
BIOLOGI DAN NERACA HAYATI KUTU PUTIH PEPAYA PARACOCCUS MARGINATUS WILLIAMS & GRANARA DE WILLINK (HEMIPTERA: PSEUDOCOCCIDAE) PADA TIGA JENIS TUMBUHAN INANG Maharani, Yani; Rauf, Aunu; Sartiami, Dewi; Anwar, Ruly
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 16, No 1 (2016): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (19.933 KB)

Abstract

Biology and life table of papaya mealybug Paracoccus marginatus Williams & Granara de Willink (Hemiptera: Pseudococcidae) on three host plant species. The papaya mealybug, Paracoccus marginatus Williams & Granara de Willink (Hemiptera: Pseudococcidae), has been considered as a new invasive pest causing heavy damage on papaya in Indonesia since 2008. The pest is polyphagous with more than 55 host plant species. Study was conducted in laboratory with the objectives to determine developmental biology and life table parameters of the mealybug feeding on papaya, physic nut, and cassava leaves. Host plant species affected papaya mealybug performances. Egg stage lasted 7.25, 8.09, and 9.86 d on papaya, physic nut, and cassava, respectively. The shortest female nymphal developmental time was on papaya (18.91 d) and the longest on cassava (32.45 d). Longevity of adult males ranged from 1.09-2.85 d while females 12.29-14.93 d. When the mealybugs were reared on a seedling, the fecundity was higher on papaya (324.6) than those on physic nut (186.6) and cassava (157.5). No egg production occurred in virgin females. The sex ratio of P. marginatus favoured females, which comprised about 90% of population on papaya and cassava. The intrinsic rate of increase (rm) was significantly different among hosts, with the highest rate (0.117 female offspring/female/d) on papaya, followed by physic nut (0.079) and cassava (0.057). The maximum values of rm along with net reproductive rate (Ro) and finite rate of increase(λ), and the shortest mean generation time (T) and doubling time (Dt) on papaya, indicating that papaya was the more favorable host plant for P. marginatus.
EFFECT OF ALTITUDE AND WOUNDING ON BLOOD DISEASE PROGRESS OF PLANTAIN Hadiwiyono, S. Subandiyah, C. Sumardiyono, J. Widada, and M. Fegan.
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 7 No. 2 (2007): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (66.812 KB) | DOI: 10.23960/j.hptt.27111-116

Abstract

Effect of Altitude and Wounding on Blood Disease Progress of Plantain. In the latest decade, the blood disease of banana has spread in almost all provinces in Indonesia and caused wilting of millions banana clusters in several provinces. It is very difficult to control the disease due to the base data about ecology and epidemiology of the pathogen are still poorly understood. This research aimed to evaluate the effect of wounding of inoculation site on blood disease progress of plantain. The experiment was arranged using randomized completely block design It was conducted at three locations with altitude of 100, 1000, and 1600 m above sea levels as replication block. The treatments were wounding, unwounding inoculation site, inoculation, and uninoculation of plantain cv. Kepok Kuning Wounding was applied by stabbing with an injection pin around the corm of 15 stabs/seedling. The seedlings were planted singly in one liter of non sterile soil in plastic bag. Each treatment consisted of 5 seedlings which was replicated 3 times. Inoculation was done by soil drenching of 20 ml bacterial suspension at concentration of 108 cfu/ml two week after planting. The pathogen used for inoculation originated from low land area (about 100 m above sea level). Observation was done weekly for 5 weeks. The variables observed were wilt intensity and area under disease progress (AUDPC). The results showed that blood disease was able to establish at altitude of 1600 m above sea level. The disease progress however was slower that those at 100 and 1000 m above sea level. On wounded seedling, the disease progress was more aggressive than those on unwounded one.
BEBERAPA HASIL INOKULASI PADA CAKRAM DAUN KOPI DENGAN HEMILEIA VASTATRIX DI LABORATORIUM Cipta Ginting , Abdul Gafur, dan Rusdi Evizal .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 2 No. 1 (2002): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (61.157 KB) | DOI: 10.23960/j.hptt.1226-31

Abstract

Some results of inoculations on coffee leaf disks with Hemileia vastatrix. Leaf rust caused by Hemileia vastatrix B. et Br. is the most important disease on coffee worldwide. The obligate nature of H. vastatrix limits research on the disease when inoculation or pathogen growth in laboratory is required. Inoculation on detached plant parts such as leaf disks may become an alternative to solve the problems. In this study, the procedure was tested using three coffee varieties (Kartika 1, USDA, and Robusta) as inoculum sources, leaves of different age, and different uredospore concentrations (4 x 103, 4 x 104, and 4 x 105 uredospores per ml suspension). The study was done in Laboratory of Plant Disease at University of Lampung from May to December 2001. Uredospores developed on leaves under field condition were used as inoculum. The uredospores were taken with sterilized scalpel and placed in sterilized distilled water. Before doing the experiments, the uredospores were measured using microscope equipped with a micrometer. The concentration of uredospore suspensions were prepared using hemacytometer. Leaf disks made with diameter of 2 cm were used in all inoculations. The results showed that the size of the uredospores varied greatly. The variation occurred not only among uredospores taken from different lesions or leaves but also among those taken from the same lesions. The size of almost all uredospores was the same as that reported in the literature. Uredospores taken from Kartika (but not from two other varieties) incited disease development and produced symptoms on leaf disks which were made from Kartika coffee. The age of leaves used to make leaf disks did not influence disease incidence. Uredospores concentration influenced ( = 0.05) disease incidence on leaf disks with higher concentration caused higher disease incidence .
Patogenisitas Isolat Beauveria bassiana dan Metarhizium anisopliae asal Tanah Lebak dan Pasang Surut Sumatera Selatan untuk Agens Hayati Scirpophaga incertulas Rosdah Thalib; Redi Fernando; . Khodijah; Dewi Meidalima; Siti Herlinda
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 13 No. 1 (2013): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (187.207 KB) | DOI: 10.23960/j.hptt.11310-18

Abstract

Pathogeicity of Beauveria bassiana and Metarhizium anisopliae Isolates from Fresh Swamp and Tidal Lowland, South Sumatra for Scirpophaga incertulas Biological Agents. The objectives of the research weret o explore and to determine the pathogenicity of entomopathogenic fungi againts the larvae of Scirpophaga incertulas, and to measure conidial viability and density of the fungi. The method for fungi exploration used larvae of Tenebrio molitor baiting submerged in the soil. The soil was taken from fresh swampand tidal lowland rice in South Sumatra. From the exploration study, we found two species of entomopathogenic fungi: Beauveria bassiana and Metarhizium anisopliae. Mortality of S. incertulas larvae that had been treated topically with fungal conidia (1x106 conidia ml-1) varied among the isolates. The highest mortality (98.33%) caused by BPlus isolate of B. Bassiana and the lowest by MtmIn isolate of M. anisopliae (57.50%) and BTmTr isolate of B. bassiana (57.50%). The fungal colonies grew fast from the second day up to the fourth day after incubation but the growth became slow after the fifth day. The highest conidial density was resulted by BPcMs of B. bassiana isolate (63.33x106 conidia ml-1) but this density was not significantly different from that of the BPlus of B. bassiana isolate (63.11x106 conidia ml-1). The lowest conidial density found in BTmTr of B. bassiana isolate (20.97x106 conidia ml-1) . The isolate B. bassiana was more effective than M. anisopliae againt the larvae of S.incertulas.
KARAKTERISASI DAN UJI AKTIVITAS BAKTERI RIZOSFER LAHAN ULTISOL SEBAGAI PEMACU PERTUMBUHAN TANAMAN DAN AGENSIA HAYATI CENDAWAN PATOGEN TULAR TANAH SECARA IN VITRO Andi Khaeruni, Gusti Ayu Kade Sutariati & Sri Wahyuni .
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 (79.207 KB) | DOI: 10.23960/j.hptt.210123-130

Abstract

Characterization and activities assay of rhizosphere bacteria from ultisol land for plant-growth promoting and biocontrol agents of soil-borne fungus pathogens under in vitro test. Although many studies have been conducted to identify the specific traits of the plant growth-promoting and bioprotecting rhizobacteria (PGPBR), they were limited to studying specific PGPBR isolates from ultisol lands. We selected 273 isolates from bulk soil and plant rhizosphere and examined them for a wide array traits that might inhibit the growth of plant pathogens and increase early cucumber growth in ultisol soil. A subsample of 25 isolates, all positively produce chitinase and sellulose enzymes, 18 positively produce protease and 7 were fluorescens on KB medium under UV lighting. All isolates could produce IAA and be able to solubilize phosphor in vitro test, 10 exhibited low level of nitrogenase activity. Futher test showed that out of 25 isolates, 12 inhibited F. oxysporum, P. capsici, R. solani and S. rolfsii in vitro. All isolates increased seed germination, but only 5 isolates significanty increased early cucumber growth in ultisol soil. The results suggest that rhizobacteria be able to produce extracelluler enzymes, siderophore, ACC deasiminase, and IAA or those which are able to solubilize phosphor in vitro may be potential to be uses as biofertilizer and biological control agents in ultisol land.
DIAGNOSIS PENYAKIT MOSAIK (SOYBEAN MOSAIC VIRUS) TERBAWA BENIH KEDELAI Wuye Ria Andayanie
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 (1611.601 KB) | DOI: 10.23960/j.hptt.212185-191

Abstract

Soybean mosaic disease is wide spread throughout soybean-growing countries. Incidence of this disease in East Java is caused by Soybean mosaic virus (SMV) and cowpea mild mottle virus (CMMV). This aim of study was to find the etiology of disease at 14-28 days after planting (dap) on soybean. Research was done by observing visual symptoms. Visual symptoms confirmed by infectivity test, serology assay,electron microscopy (EM) and molecular detection. Results from experiment indicated that soybean plants (14-28 dap) with symptom could be detected in infectivity test. Mechanical inoculation with symptomatic leaf extracts produced local lessions on Chenopodium amaranticolor. Positive results were obtained for Madiun, Ngawi, and Magetan samples when tested against antiserum of SMV in serological assay, however Ponorogo samples were not detected by serological assay. Electron microscopy was also done for the selected sample to confirm the result of positive results. In EM observations, characteristic filamentous particles with modal length close to 900 nm were observed in samples infected with SMV. We detected an array of amplification products of expected size 1385 bp fragment of cylindrical inclusion gene from Madiun, Ngawi, and Magetan isolates in former fields, but not detected in Ponorogo isolate. This result showed the existence of SMV of soybean seed transmission at 14-28 dap in Madiun, Magetan and Ngawi.
KEANEKARAGAMAN DAN KELIMPAHAN LALAT BUAH (DIPTERA: TEPHRITIDAE) PADA BEBERAPA SISTEM PENGGUNAAN LAHAN DI BUKIT RIGIS, SUMBERJAYA, LAMPUNG BARAT Nismah dan F.X. Susilo .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 8 No. 2 (2008): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (129.128 KB) | DOI: 10.23960/j.hptt.2882-89

Abstract

Diversity and abundance of fruit flies (Diptera: Tephtritidae) in a range of land use systems in Sumberjaya, West Lampung. Fruit fly inventory from seven land use systems in Sumberjaya area, West Lampung, using fruit incubation and lure trap methods resulted in four species of fruit flies, i.e. Bactrocera (Bactrocera) dorsalis, B. (B.) umbrosa, B. (Zeugodacus) cucurbitae, dan B. (Afrodacus) furvus. B. dorsalis was the most common fruit flies in the area while the least found was B. (A) furvus. The abundance of fruit flies was positively correlated with the weight of cempedak fruit (Artocarpus polyphema, Moraceae) and of the watery roseapple fruit (Syzygium aqueum, Myrtaceae).
KERAGAMAN AKTIVITAS INSEKTISIDA CALOPHYLLUM SOULATTRI BURM. F. (CLUSIACEAE) DARI KALIMANTAN BARAT Edy Syahputra, Djoko Prijono, Fadjar Rianto .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 6 No. 1 (2006): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
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Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (280.472 KB) | DOI: 10.23960/j.hptt.1623-31

Abstract

Diversity of insecticide activity of Calophylum soulattri Burm. F. (Clusiaceae) originate from West Kalimantan. The objective of this research was to evaluate the insecticidal activity of the bark extract of Calophyllum soulattri from West Borneo against Crocidolomia pavonana (F.) (Lepidoptera: Pyralidae) larvae. Extraction of the bark was performed with maceration method using ethanol and continued by acetone reextraction. High performance liquid chromatography (HPLC) with C18 column (reversed-phase) and methanol-water (1:1) as the mobile phase was used to measure the amount of active components. Bioassays were done using leaf-residual method. The results showed that acetone bark extract of 10 sample plants of C. soulattri possessed strong lethal effect against C. pavonana larvae. The lethal effect of the extracts did not differ from each other and the correlation with the content of active components was not significant. The sample plant no. 12 showed the highest yield of acetone extract. Based on both the insecticidal activity and its rendement, it is concluded that the sample plant no. 12 is promising to be used as a parent plant for mass-propagation of source plants
PENGARUH KELEMBAPAN RELATIF DAN SUHU TERHADAP AKTIVITAS GLUKOAMILASE ASPERGILLUS FLAVUS PADA PENYAKIT SIMPANAN GAPLEK H. A. Oramahi, Christanti Sumardiyono, Nursamsi Pusposendjojo, dan Haryadi .
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 (17.719 KB) | DOI: 10.23960/j.hptt.1967-72

Abstract

The effect of relative humidity and temperatur to glucoamylase activity of Aspergillus flavus on storage disease of dried cassava. Aspergillus flavus is the most important species because of its toxigenic caracteristic on agricultural product. Among several Aspergillus species growing on dried cassava. This study was conducted to show the role of glucoamylase produced by Aspergillus flavus fowards the storage disease of dried cassava. The effect of RH and storage room temperature to glucoamylase activity was evaluated for 4 months using Randomized Completely Block Design (Factorial). Variables observed were glucoamylase activity and starch content of dried cassava. Glucoamylase activity could be used as an early indicator of the infestation of dried cassava by Aspergillus while the change of dried cassava color had not been visible. Starch content of dried cassava decreased during the storage. Due to the glucoamylase activity of A. flavus which degrading starch into glucose. The interaction effect of RH and storage room temperature to glucoamylase activity of A. flavus was significant.

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