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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.
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Articles 448 Documents
The preventive Control of White Root Rot Disease in Small Holder Rubber Plantation Using Botanical, Biological and Chemical Agents Joko Prasetyo; Titik Nur Aeny
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 (184.675 KB) | DOI: 10.23960/j.hptt.11369-74

Abstract

The preventive control of white root rot disease in small holder plantation using botanical, biological, and chemical agents. A field and laboratory experiment were conducted from June 2008 to December 2009 in Panumangan, Tulang Bawang - Lampung. The field experiment was intended to evaluate the effect of botanical plants (Alpinia galanga, Sansiviera auranthii, and Marantha arundinacea), biological agents (organic matter and Trichoderma spp.), and chemical agents (lime and natural sulphur) on the incidence of white root rot disease and population of some soil microbes. The laboratory experiment was conducted to observe the mechanism of botanical agents in controlling white root rot disease. In the field experiment, the treatments were applied in the experimental plot with cassava plant infection as the indicator. The variables examined were the incidence of white root rot and population of soil microbes. In the laboratory experiment, culture of R. microporus was grown in PDA containing root exudate of the antagonistic plant (botanical agent). The variable examined was colony diameter of R. microporus growing in the PDA plates. The results of the field experiment showed that planting of the botanical agents, and application of Trichoderma spp., as well as natural sulphur, decreased the incidence of white root rot disease. The effectiveness of M. arundinacea and Trichoderma spp. was comparable to natural sulphur. The laboratory experiment showed only root exudate of A. galanga and S. auranthii that were significantly inhibit the growth of R. microporus.
PENGGUNAAN PREDATOR UNTUK MENGENDALIKAN KUTU KEBUL (BEMISIA TABACI), VEKTOR PENYAKIT KUNING PADA CABAI DI KABUPATEN TANGGAMUS Sudiono & Purnomo .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 10 No. 2 (2010): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (62.998 KB) | DOI: 10.23960/j.hptt.210184-189

Abstract

Application of predators to control whitefly (Bemisia tabaci), an insect vector of yellow diseases of chili in Tanggamus district on dry and rainy season. The yellow disease is one of the important diseases in chili which is transmitted by whitefly. Utilization of natural enemy such as predators is one of some methods in controlling whitefly. This study was conducted in Gisting, Tanggamus District, Lampung province from June 2009 to January 2010. The objective of this research was to determine effectiveness of controlling whitefly by its predators: Menochilus sp., Micraspis sp., and Paederus sp. The results showed that Menochilus, Micraspis, and Paederus could effectively decrease the population of whitefly. The three predators were more effective in rainy than in dry season.
POTENSI PARASITOID TELUR PENGGEREK BATANG PADI KUNING Scirpophaga incertulas Walker PADA BEBERAPA TIPOLOGI LAHAN DI PROVINSI JAMBI . Wilyus; Fuad Nurdiansyah; Siti Herlinda; Chandra Irsan; Yulia Pujiastuti
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 12 No. 1 (2012): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (166.547 KB) | DOI: 10.23960/j.hptt.11256-63

Abstract

The research was conducted to analyze the diversity, dispersal and domination of the egg parasitoid species of the yellow rice stem borer Scirpophaga incertulas Walker on several land typologies in Jambi Province. The study was conducted by survey method, from December 2010 until June 2011. Samples of egg parasitoids of S. incertulas were collected by baiting parasitoids with eggs of S. incertulas. The results of the research showed that there were three spesies of the egg parasitoids of S. incertulas found in Jambi Province, the most dominant was Telenomus rowani Gahan, followed by Trichogramma japonicum Ashmead and Tetrastichus schoenobii Ferriere. T. rowani and T. japonicum were found in all wetland ecosystems in Jambi Province (tidal swamp, swampy area, rainfed lowland, lowland technical irrigation, and upland technical irrigation), while T. schoenobii was found only in tidal swamp, swampy area, and lowland technical irrigation. The highest species diversity of egg parasitoid of S. incertulas was found on tidal swamp (Shannon index 1.047), followed by swampy area, lowland technical irrigation, rainfed and upland technical irrigation area. The average of proportion of egg masses parasitized by T. rowani, T. japonicum and T. Schoenobii were 22.58, 6.18 and 2.68% respectively. The average of individual eggs parasitized by T. rowani, T. schoenobii, and T. japnicum were 8.41, 1.67 and 1.47% respectively.
VARIASI VIRULENSI VIRUS TUNGRO BERSUMBER DARI INOKULUM DI DAERAH ENDEMIS TUNGRO DI INDONESIA Nyoman Widiarta; Syahrir Pakki
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 15 No. 1 (2015): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (76.552 KB) | DOI: 10.23960/j.hptt.1151-9

Abstract

Variations in virulence of tungro viruses from various inoculum sources in tungro endemic areas in Indonesia. Rice tungro disease is caused by virus which is effectively transferred by the green leafhopper. Reactions of resistant varieties to virus sources of inocula from 15 tungro endemic areas were employed as indicator of variations of virus virulence. The green leafhopper of Sukamandi’s population was used as the vector and allowed to transfer viruses  acquired from tungro’s infected plants from 15 tungro endemic areas to five groups of virus resistant varieties based on parent source of resistance using free choice screening box method. The results showed that the most resistant variety was group V1-Tukad Petanu, followed by V4-Tukad Unda, V2-Tukad Balian and V3-Bondoyudo. Based on resistance test result group variety of V1-Tukad Petanu is recommended for 15 provinces source of incula except for Sulawesi Utara. Group variety of V4-Tukad Unda is not recommended to plant in Yogyakarta and Banten provinces. Group V2-Tukad Balian is not recommended to plant in Bali, Sulawesi Utara, Banten and Kalimantan Selatan provinces. Group V3-Bondoyudo is not recommended to plant in Jawa Tengah, Yogyakarta, and Banten provinces. There were variations in virus virulence among sources of inocula. Six virulence variants were identified, i.e. 001 (Jawa Barat, Nusa Tenggara Barat, Sulawesi Selatan, Jawa Timur, Lampung, Sulawesi Barat, Sulawesi Tengah, Sulawesi Tenggara, Papua), 011 (Jawa Tengah), 021 (Bali, Kalimantan Selatan), 051 (Yogyakarta), 071 (Banten) and 121 (Sulawesi Utara).
HOST MORTALITY, LETHAL PERIOD, TRANSMISSIBILITY, AND THRESHOLD DENSITY OF VERTICILLIUM LECANII – SCOTINOPHARA SP. MYCOSIS F.X. Susilo, Nyoman Mulyasari, Rozali, and Sudi Pramono .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 5 No. 2 (2005): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (143.745 KB) | DOI: 10.23960/j.hptt.2588-96

Abstract

Host mortality, lethal period, transmissibility, and threshold density of Verticillium lecanii – Scotinophara sp. mycosis. This study, conducted at Laboratory of Plant Protection Gading Rejo, Tanggamus-Lampung during March – October 2002, was aimed at determining the host mortality, lethal period, transmissibility, and threshold density of Verticillium lecanii – Scotinophara sp. mycosis generated from cadaver exposure and conidial spray in potted rice plants. The cadaver exposure was implemented by inoculating various levels of inoculum to different levels of host population while the conidial spray was done by spraying V. lecanii starter suspension or suspension of homogenized Scotinophara sp. cadavers to the host. After incubation, newly formed cadavers (new infections) were collected. The host mortality was expressed as percentage of the host number by inoculation technique while the lethal (infection) period was averaged from overall data (grand average) or from data sorted by inoculation technique. Transmissibility was taken to be the significant regression slope between new infections and potential contact while threshold density value was taken as the ratio between the inverse value of lethal period (numerator) and transmissibility (denominator). Results showed that the host mortality after exposure to 2 cadavers was significantly lower (1.7%) than that after exposures to 4 – 10 cadavers or after conidial sprays (10 – 25% range). The lethal period of the mycosis ranged from 5.2 to 15.8 days (no difference between inoculation techniques) while the disease transmissibility was 0.025 infection potential contact-1. The threshold density of the mycosis was 4.0 individuals of susceptible Scotinophara sp. rice plant-1. The fungus V. lecanii could be importance as a naturally-occurring biological control agent against Scotinophara sp.
VIRULENSI SEJUMLAH ISOLAT XANTHOMONAS AXONOPODIS PV GLYCINES ASAL EDAMAME PADA TIGA VARIETAS KEDELAI Andi Khaeruni R, Budi Tjahjono, Antonius Suwanto dan Meity S. Sinaga .
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 (119.765 KB) | DOI: 10.23960/j.hptt.1839-46

Abstract

Virulence of some Xanthomonas axonopodis pv. glycines Isolates from Edamame on Three Soybean Varieties. Bacterial pustul disease caused by Xanthomonas axonopodis pv. glycines is the most important bacterial disease in soybean cultivation worldwide including in Edamame cultivation in Indonesia. Information of virulence level of this pathogen in Edamame unknown yet. The objective of this research was to evaluate the virulence level of 29 X. axonopodis pv. glycines isolates from Edamame on three soybean varieties (Wilis, Orba and Edamame). The result showed that four isolates (JA7,JA8, JB4 and JB7) were hight virulent. The isolates also have faster laten priodic, higher disease severity as well as the rate epidemic increase in Edamame variety than in both Wilis and Orba varieties.
KETAHANAN DAN PENGARUH FITOTOKSIK CAMPURAN EKSTRAK PIPER RETROFRACTUM DAN ANNONA SQUAMOSA PADA PENGUJIAN SEMI LAPANGAN Dadang, Nur Isnaeni, dan Kanju Ohsawa .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 7 No. 2 (2007): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (74.698 KB) | DOI: 10.23960/j.hptt.2791-99

Abstract

Persistence and Phytotoxic Effect of Extract Mixtures of Piper retrofractum (Piperaceae) and Annona squamosa (Annonaceae) in Semi Field Test. Novel strategy in vegetable pest control program is necessary to be conducted to reduce high rate of synthetic insecticide use. Botanical insecticides offer one of alternatives. Prior to be applied in the field, it has to be evaluated the extract persistence and phytotoxic effect to crops. So, the objective of this research was to study the persistence and phytotoxic effect of extract mixtures of Piper retrofractum (Piperaceae) and Annona squamosa (Annonaceae) in semi field test. Extract mixtures were sprayed on broccoli plants, then at 0,1,2,3,5,7, and 10 days after exposure under sunlight, leaves of broccoli were served to Crocidolomia pavonana (Lepidoptera: Pyralidae) to evaluate the insecticidal activity. The mortality activity of extract mixtures at 0.1% were still high until 10 days exposure. Moreover, no phytotoxic effect was occurred on broccoli plants treated with extract mixtures as high as at 0.1% of extract mixture concentration.
EFIKASI SERBUK TUMBUHAN DALAM MENGENDALIKAN PENYAKIT BUSUK PANGKAL BATANG LADA DI LAPANGAN Cipta Ginting , Dad R.J. Sembodo, dan Herry Susanto hpt
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 (65.431 KB) | DOI: 10.23960/j.hptt.1215-19

Abstract

The efficacy of plant powder to control foot rot on black pepper in field condition. One of the problems in cultivating black pepper (Piper nigrum L.) is foot rot caused by Phytophthora capsici Leonian (P. palmivora MF4), that could kill the plants in only few days especially during rainy season. The objective of this experiment was to evaluate the efficacy of several plant powder to control the disease in semi-field condition. The experiment was conducted at the experiment station located at the campus of the University of Lampung from May to October of 2000. The semi-field condition was made by pushing a barrel into the soil to isolate the field soil as testing medium from the rest of the field soil. The treatments were arranged in a randomized complete block design with five replications and consisted of the rhizomes of Zingiber officinale, Alpinia galanga, and Kaempferia galanga, whole plant of Cymbopogon citratus and Elephantopus scaber, metalaxyl, and untreated control. To prepare the plant powder, each material was cut into small pieces then dried in oven at 50o C for 4 days and then ground in a blender. The powder was applied 3 days after inoculum infestation. The powder and inoculum was mixed with soil to the depth of 12 cm so that the soil contained 2% each. After one week, four plants were planted. As additional bioindicator to detect infective inoculum, eight leaf portions were pressed into the soil so that half of the leaf was bellowed the soil line. The plants were watered and observed daily. To determine viable fungal propagules, soil sample was taken weekly for five weeks. Soil assay was done with dilution technique using PDA supplemented with rosebengal. The results of the observation show that the treatments did not influence significantly the disease intensity on leaf portions or the whole plants. There were no significant differences on viable fungal propagules in soils received different treatments.
VIRULENSI BERBAGAI ISOLAT JAMUR ENTOMOPATOGEN METARHIZIUM SPP. TERHADAP HAMA PENGGEREK BUAH KAKAO CONOPOMORPHA CRAMERELLA SNELL. (LEPIDOPTERA: GRACILLARIIDAE) . Trizelia; . Nurbailis; Dina Ernawati
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 13 No. 2 (2013): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (375.742 KB) | DOI: 10.23960/j.hptt.213151-158

Abstract

Virulence of various Metarhizium spp. (Deuteromycotina: Hyphomycetes) isolates on cocoa pod borrer pest, Conopomorpha cramerella Snell. (Lepidoptera: Gracillariidae). In Indonesia, Conopomorpha cramerella Snell. (Lepidoptera : Gracillariidae) is a serious pest of cocoa. Entomopathogens such as Metarhizium spp. (Deuteromycotina: Hyphomycetes) can be used to control this pest as an alternative to chemical insecticides. The purpose of this research was to study the virulence of isolates of Metarhizium spp. to pupae of C. cramerella. Nine isolates of Metarhizium spp each with 107 conidia/ml rate were used in the experiment. Pupal mortality was recorded daily. The results showed that isolate MetApCi from chili rhizosphere had the highest virulence causing 96.67% mortality of C. cramerella pupae and with an LT50 of 3.04 days.
KAJIAN MEKANISME ANTAGONIS PSEUDOMONAS FLUORESCENS P60 TERHADAP FUSARIUM OXYSPORUM F.SP. LYCOPERSICI PADA TANAMAN TOMAT IN VIVO Loekas Soesanto, Endang Mugiastuti & Ruth Feti Rahayuniati .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 10 No. 2 (2010): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (75.965 KB) | DOI: 10.23960/j.hptt.210108-115

Abstract

Antagonistic mechanisms study of Pseudomonas fluorescens P60 on Fusarium oxysporum f.sp. lycopersici of tomato in vivo. This research was conducted to evaluate the effect of P. fluorescens P60 in controlling Fusarium wilt on tomato and its inhibition mechanisms. Randomized Block Design was used with four replicates and each consisted of 12 crops. The treatments tested were combination between supernatant or suspension of P. fluorescens P60 and application time, i.e., 5 days before planting, in the same time with planting, and 5 days after planting. Variables observed were phenolic compound (tannin, saponin, and glycoside), disease intensity, infection rate, late pathogen and antagonist population density, crop height, stem diameter, fresh and dry weight of roots, and fresh weight of fruit. The result showed that the application of P. fluorescens P60 either in supernatant or suspension form, could increase phenolic compound in the crop tissue, decrease the Fusarium wilt intensity on tomato as 66.00-77.88%, suppress infection rate as 73.18-79.09%, decrease late F. oxysporum f.sp. lycopersici density as 35.71%, increase the antagonist as 10 fold, increase crop height as 26.50%, improve root dry weight as 55.69%, and increase fruit weight crop-1 as 59.79%. Mechanisms of the antagonist P. fluorescens P60 in order to control the disease in the field were induced resistance, antibiosis, and plant growth promoting rhizobacteria.

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