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INDONESIA
Jurnal Perlindungan Tanaman Indonesia
Published by Universitas Gadjah Mada
ISSN : 14101637     EISSN : 25484788     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Arjuna Subject : -
Articles 509 Documents
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Obituari: Dr. Ir I. Hartana Triwidodo Arwiyanto
Jurnal Perlindungan Tanaman Indonesia Vol 20, No 2 (2016)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.17545

Abstract

Effect of Enhancing Factor on The Developmental Resistance of Pseudaletia separata Larvae Orally Inoculated with Pseudaletia unipuncta Nucleopolyhedrovirus Arman Wijonarko; Hamano Kunikatsu
Jurnal Perlindungan Tanaman Indonesia Vol 11, No 2 (2005)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12101

Abstract

Larvae of lepidopteran insect become increasingly resistant to baculovirus infection as they age. The mechanism for this resistance is not known yet, but the phenomenon does not occur when an enhancing factor was added to the viral inoculum. This observation indicated that the mechanism of resistance occur during primary infection within midgut. By assessing the fusion of positive microvillus cell using flow cytometer, we indicated that enhancing factor may somehow help the virus to fuse in the midgut of older insect.
Isolasi dan Karakterisasi Ralstonia syzygii Yanuar Danaatmadja; Siti Subandiyah; Tri Joko; Cavrina Ulita Sari
Jurnal Perlindungan Tanaman Indonesia Vol 15, No 1 (2009)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11759

Abstract

Ralstonia syzygii is one of important pathogens of cloves. This study was aimed at obtaining pure culture of R. syzygi from diseased plant tissue samples. The acterium was isolated from infected clove plantations in Ungaran, Central Java. It had the ability to make clove seedlings show symptoms and then die 41 days after inoculation. The reisolated bacterium also showed its ability to kill clove seedlings after 17 days. The bacterium is gram negative, able to ultilize glucose, sucrose, maltose, mannitol, sorbitol, dulcitol, and glycerol, able to hydrolyze starch, grow well at 27oC, able to catalyze and release water and oxygen from hydrogen peroxyde (H2O2) and aerobically.
The Effect of Environmental Factors on Conidial Germination, Sporulation and Growth of Trichoderma harzianum In Vitro Arif Wibowo
Jurnal Perlindungan Tanaman Indonesia Vol 5, No 2 (1999)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12759

Abstract

This experiment was conducted to study the influence of temperature, pH of media, and length of radiaton on conidial germination, sporulation and growth of Trichoderma harzianum on PDA (Potato Dextrose Agar). It was conducted in a Completely Randomized Design (CRD) with 3 replications. The results indicated that the highest conidial germination occurred at 30°C, and so the sporulation and the growth of T. harzianum. Length of radiation did not significantly affect conidial germination. However sporulation was enhanced by 12 hrs light-12 hrs dark treatment and colony diameter of T. harzianum was significantly greater at dark. Acidity influenced mainly the conidial germination and the sporulation of T. harzianum. The greatest of conidial germination occurred at pH 8, whereas the smallest occurred at pH 5. Sporulation was also enhanced by higher pH. The influence of acidity on the growth of T. harzianum occurred at pH 9 which its diameter colony was significantly smaller compared to the other treatments.
Effects of Mineral Oils on Host Selection Behavior of Diaphorina citri Mofit Eko Poerwanto; Y. Andi Trisyono; Siti Subandiyah; Edhi Martono; Paul Holford; George Andrew Charles Beattie
Jurnal Perlindungan Tanaman Indonesia Vol 14, No 1 (2008)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11873

Abstract

Response of Diaphorina citri Kuwayama (Hemiptera: Psyllidae) on citrus leaves treated with horticultural and agricultural mineral oil (HMO & AMO) was evaluated under laboratory condition in choice and non-choice trials. Combination of HMO and AMO at concentration of 0 up to 2% was applied to citrus leaves. Mineral oil applications significantly reduced the proportion of D. citri stayed on citrus leaves for feeding with the proposed mechanisms: 1) oils covered leaves thus hampered it for releasing volatile compounds, 2) oil film preventing the direct contact of tarsus or palpus to leaf surfaces, and 3) the volatile compounds produced by mineral oils also blended with plant volatiles in the atmosphere and reduced the probability of olfactory receptors capturing the olfactory cues for locating the feeding site. Mineral oils also increased the mortality of D. citri due to the refusion for feeding on the treated citrus leaves. The effect of AMO was more prominent than HMO.
Keanekaragaman Artropoda pada Perkebunan Kelapa Sawit Rakyat di Kabupaten Dharmasraya, Provinsi Sumatera Barat Sri Heriza; Ade Noferta; Nanang Aligandi
Jurnal Perlindungan Tanaman Indonesia Vol 21, No 1 (2017)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.18420

Abstract

-
Karantina Tumbuhan di Indonesia dalam Masa Perdagangan Bebas Nursamsi Pusposendjojo
Jurnal Perlindungan Tanaman Indonesia Vol 11, No 1 (2005)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12116

Abstract

Plant quarantine is enacted to keep out foreign plant pests and to protect food, horticulture and estate crops from alien pests. The act prohibits or restricts entry into or passage through a country from foreign countries of plants, plant products, soil, and other materials carrying or likely to carry pests not known· to be established in the country. Experienced inspectors stationed at all points of entry into the country enforce quarantine of produce likely to introduce new pests. The importance of plant quarantine becomes more and more significant in the free trade era. Indonesia to be one of potential market for many agricultural products has still very limited number of plant quarantine inspectors. Number and quality of plant quarantine inspectors are badly needed in order enable coping the problems. Education and training should be organized and it is important to include plant quarantine in the Faculty of Agriculture curriculum.
Morphological and Molecular Characters of Mimegralla spp. (Diptera: Micropezidae) on Zingiberaceae in Central Java Rahma Widyastuti; Suputa Suputa; Nugroho Susetya Putra
Jurnal Perlindungan Tanaman Indonesia Vol 20, No 1 (2016)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.17537

Abstract

Rhizome fly, Mimegralla sp. (Diptera: Micropezidae) is a major pest on Zingiberaceae plants. Some of those fly species have been reported attacking some of Zingiberaceae plants, but in Indonesia, only one species, Mimegralla coeruleifrons has been reported as being a pest. Since Indonesia has many species of Zingiberaceae plants, it may raise a prediction that more than one species of Mimegralla was found on this plants. Therefore, a taxonomic research on the species of rhizome flies to find the species other than M. coerulifrons on Zingiberaceae plants is urgently required. This study was conducted by using hand-picking method on Mimegralla adult inhabiting Zingiberaceae plants (ginger, turmeric, javanese ginger, and aromatic ginger), and was then identified by using morphological characters and through molecular technique by using mtCO1 gene. The results showed thatM. albimana and M. coeruleifrons found at four zingiberaceae plants were the member of Mimegralla. As a conclusion, these two species have high values of phylogenic relationship (88%) and bootstrap (92).INTISARILalat rimpang (Mimegralla spp.) adalah hama utama pada beberapa tanaman anggota Family Zingiberaceae. Beberapa spesies lalat rimpang dilaporkan menyerang tanaman Zingiberaceae, di antaranya jahe, kunyit, temulawak, dan kencur. Di Indonesia hanya satu spesies yang pernah dilaporkan menyerang tanaman jahe yaituMimegralla coeruleifrons.Sementara itu, jenis tanaman Zingiberaceae yang ditanam di Indonesia sangat beragam, sehingga muncul dugaan bahwa Mimegralla yang menyerang tanaman Zingiberaceae di Indonesia tidak hanyaM. coeruleifrons saja. Oleh karena itu, penelitian untuk mengidentifikasi spesies-spesies lalat rimpang yang menyerang tanaman Zingiberaceae di Indonesia perlu dilakukan. Penelitian ini dilakukan menggunakan metode pemungutan/penangkapan (hand-picking) imago Mimegralla pada tanaman keempat tanaman Zingiberaceae. Imago yang diperoleh diidentifikasi secara morfologi dan molekuler menggunakan genmtCO1. Hasil penelitian ini menunjukkan bahwa M. albimana dan M. coeruleifrons yang ditemukan pada pertanaman Zingiberaceae merupakan satu genus yang sama yaitu Mimegralla. Hasil identifikasi molekuler menunjukkan bahwa kedua lalat rimpang tersebut mempunyai derajat kekerabatan dengan nilai homologi sebesar 88%, dan nilaibootstrap pada pohon filogeni sebesar 92. 
Pengaruh Demihipo dan ZPT (Decamon®) terhadap Mortalitas Telur dan Serangan Lalat Pengorok Daun, Liriomyza huidobrensis (Blanchard) pada Tanaman Kentang I Wayan Supartha
Jurnal Perlindungan Tanaman Indonesia Vol 8, No 2 (2002)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12365

Abstract

Field experiment to determine the effectiveness of demihipo and Decamon® to induce the egg extrusion and reduce L. huidobrensis population larvae on potato was conducted in Pancasari, Buleleng (Bali) from February to August 1999. The results indicated that application of Decamon to the plant was significantly able to increase egg-extrusion of L. huidobrensis from the leaf compared with the other treatments. While, weekly application of insecticide (demihipo) was also significantly able to reduce the Larvae population on the plant. The application of the combination of both control measure (plant growth regulator or PGR) and insecticide (demihipo) was the most effective control to reduce the feeding or ovipositional-punctures of adult on the leaves. Therefore, the application of PGR and insecticide was the best to prevent and reduce the population development of L. huidobrensis in the field. In general, all control measures were able to increase the yield and advantage-added of the farmer. However, the highest increased of the yield and advantage-added in wet season were given by the plant treated with PGR (Decamon®), while in dry season given by the plant treated with the combination of PGR and demihipo.
Karakterisasi Parsial Streptomyces spp., Agens Pengendali Hayati Peyakit Lincat Tembakau Triwidodo Arwiyanto; Ari Astuti; Y. M. S. Maryudani
Jurnal Perlindungan Tanaman Indonesia Vol 13, No 2 (2007)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11854

Abstract

Local isolates of Streptomyces spp. were proven could suppress "lincat disease" of tobacco in the field. Six isolates were chosen for partial characterization of their bacteriological properties as based for the next experiments purposes. The results indicated that the isolates produce miselium with spore chains, gram positive, aerob, catalase and oxidase positive. The isolates also hydrolize starch, gelatine and esculine; produce lecithinase enzyme, reduce nitrate to nitrite, do not produce melanine pigment, did not produce hydrogen sulfide. The isolates were sensitive against streptomycine and rifampicin; able to use several carbon and nitrogen sources tested. Capable to grow on several medium pH, from 4,3 to 8,0. The isolates were able to grow from 5° C to 45° C; able to grow on medium containing 4% to 7% NaCl and ion the medium containing 0,1% of phenol. Plant pathogenicity test result showed negative responses which indicated that the used isolates were non plant pathogenic. The ability in suppressing lincat pathogen (Ralstonia solanacearum and Meloidogyne incognita) in vitro was vary between isolates.

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