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Jurnal Perlindungan Tanaman Indonesia

jpti
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Published by Universitas Gadjah Mada

ISSN : 14101637 EISSN : 25484788 DOI : -

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Arjuna Subject : -

Articles 12 Documents

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Search results for , issue "Vol 1, No 1 (1995)" : 12 Documents clear

Kajian Tanaman Inang Nematoda Puru Akar Padi (Meloidogyne graminicola) Mulyadi Mulyadi; B. Triman
Jurnal Perlindungan Tanaman Indonesia Vol 1, No 1 (1995)
Publisher : Universitas Gadjah Mada

The objective of the research was to study host plants or alternate hosts of root-knot nematode of rice (Meloidogyne graminicola). At the first phase research, ten rice cultivars were inoculated with M. graminicola. On the second phase, nineteen species of plants were treated with M. graminicola. Both experiments were done in green house in Completely Randomized Design. The third phase research was conducted as a survey method using “proportional random sampling”, with D.I. Yogyakarta as its survey areas. The research results indicated that all rice cultivars tested were attacked by M. graminicola. The lowest number of root-gall was found in IR 26. Of the 19 species plants tested, soybean, pea common bean, france bean, cabbage, and sugarcane var. Ps 56 were attacked by M. graminicola. The survey results indicated that 15 species of weeds were invaded by M. graminicola, i.e. Coix lacrymajobi, Comelina nudiflora, Cyperus flavidus, C. iria, Echinochloa colona, Eragrotis amabilis, Fimbristylis pilosa, Ichaimum mutichum, Leersia hexandra, Ludwigia adscendens, L. peruviana, Marsilea crenata, Monochoria vaginalis, Polygonum barbatum, and Stagnima sp. The highest populatiom of M. graminicola was found on E. colona.

Peranan Faktor Cuaca terhadap Infeksi dan Perkembangan Penyakit Bercak Ungu pada Bawang Merah Bambang Hadisutrisno; Sudarmadi Sudarmadi; Siti Subandiyah; Achmadi Priyatmojo
Jurnal Perlindungan Tanaman Indonesia Vol 1, No 1 (1995)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.9351

Purple blotch disease caused by Alternaria porri (Ell.) Cif. is one of the most important diseases on shallots. The farmers have been using fungicides as a reliable control method, however, the chemical control method has to be considered for the negative effect on the environment and the danger to the other species and causes the resistance to a certain pesticide. Therefore, it is important to develop other method that is safe, effective, and efficient, like the use of climatic data to decide the control strategy. The result of the study on ecology of purple blotch disease carried out at the experimental station in Kramat-Tegal, Kledung-Temanggung, and KP4 Kalitirto in dry and rainy season (1991/1992) suggested that climatic factors played on important role on the daily conidium dissemination of Alternaria porri and on the intensity of purple blotch disease. Daily conidium dissemination which was one of the important component in the epidemy of purple blotch disease was influenced by the temperature, relative humidity, and the wind velocity. Conidium dissemination was occurred both during the day and night and at 10.00 am-14.00 pm when the air temperature and wind velocity were high with low relative humidity, conidium dissemination was maximum. On the other hand, at 22.00 pm – 02.00 am there was minimum conidium dissemination. The result on the effects of leaf wetness period on disease intensity suggested that high humidity was not the only factor caused disease infection but it has to be supported by the presence of thin film water on the leaf surface at least for 4 hours since the attachment of the conidia on the leaves.

Virulensi beberapa Isolat Colletotrichum musae terhadap Buah Pisang dan Ketahanan Beberapa Buah Kultivar Pisang terhadap Colletotrichum musae Toekidjo Martoredjo
Jurnal Perlindungan Tanaman Indonesia Vol 1, No 1 (1995)
Publisher : Universitas Gadjah Mada

Colletotrichum musae was isolated from banana cultivar of Ambon Hijau, Ambon Kuning, Emas, Gabu, Kepok, Kidang, Raja Gintung, Raja Sepet, Raja Temen, Raja Uter, Susu, and Tanduk. Virulency test showed that Raja Sepet, Raja Temen, and Susu C. musae isolates much more virulent than Tanduk isolate, while Ambon Kuning isolates its virulent is between two those groups. So Raja Sepet isolate is the highest virulent isolate and Tanduk isolate is the lowest virulent one. Resistancy test showed that Raja Temen, Ambon Hijau, and Raja Uter banana cultivars are much more resistant than Raja Gintung and Tanduk banana cultivars, while Raja Lumut, Kepok, Susu, Ambon Kuning, and Raja Uter banana cultivars their resistancy are between two those groups. So Ambon Hijau banana cultivar is the highest resistant banana cultivar and Tanduk banana cultivar is the lowest resistant one.

Pengendalian Nematoda Parasitik Tanaman secara Hayati dengan Bakteri Pasteuria penetrans: Inventarisasi, Pembiakan Massal, dan Uji Patogenisitas Isolat Bakteri Mulyadi Mulyadi; B. Triman; Bambang Rahayu TP
Jurnal Perlindungan Tanaman Indonesia Vol 1, No 1 (1995)
Publisher : Universitas Gadjah Mada

The research on “Biological control of plant parasitic nematodes by nematophagous bacteria (Pasteuria penetrans)” was planned to be conducted within 3 years period, started in 1994/1995. In the first year research was done with the following objectives: 1) inventory on the isolates of P. penetrans, and 2) study on the mass production and pathogenicity test of P. penetrans. Survey of P. penetrans was done in the provinces of D.I. Yogyakarta, Central Java, East Java, and West Java. Soil and root samples were collected in this survey, plant parasitic nematodes were isolated using centrifugation and funnel and spray method. Mass production of P. penetrans was done with their host especially root-knot nematodes (Meloidogyne spp.). The bacterial infected nematodes were inoculated on tomato planted on sterilized soil. Roots contain root-knot nematodes inhabiting spores of P. penetrans were used as inoculum source. The pathogenicity tests of the isolates were done using bioassay method and in the green house in Completely Randomized Design.The research results is as follows: 1) seventeesn isolates of P. penetrans were found in the survey, these isolates were pathogenic to root-knot nematodes, 2) mass production of P. penetrans was done with their host especially root-knot nematodes and 4) treatment with P. penetrans significantly reduced the root-gall caused by root-knot nematodes.

Ketahanan Beberapa Jamur Patogen terhadap Fungisida Christanti Sumardiyono; Nursamsi Pusposendjojo; Sri Trisnowati
Jurnal Perlindungan Tanaman Indonesia Vol 1, No 1 (1995)
Publisher : Universitas Gadjah Mada

Chemical control of plant pathogens have been done for a long time using contact and systemic fungicides. Resistance of the pathogens to fungicides may caused failure of disease control program. Studies by in vitro, in green house and fields were done at Yogyakarta to know the fungal which were resistant to several fungicides after treatment. The pathogen tested to fungicides were Colletotrichum capsici on red pepper to propineb, mancozeb, mixture of carbendazim and mancozeb, and thiophanate methyl, Alternaria porri on garlic to thiophanate methyl, Phytophthora palmivora on cocoa to Al-fosetyl, metalaxyl, mancozeb, and Copper Oxychloride, and Peronosclerospora maydis on corn to metalaxyl. The study indicated that C. capsici was resistant to propineb, mancozeb, and mixture of carbendazim and mancozeb, but sensitive to thiophanate methyl. A. porri from plant treated with thiophanate methyl indicated resistant to the fungicides. ED50 of Al-fosetyl and metalaxyl on P. palmivora were higher than on mancozeb and copper oxychloride, so that it was resistance strain.

Peran Infeksi Jamur dalam Memperparah Kerusakan Buah Kakao Akibat Serangan Helopeltis sp. Toekidjo Martoredjo; Djungdjunan Ardy; Hermansyah Hermansyah; Tri Sunardi
Jurnal Perlindungan Tanaman Indonesia Vol 1, No 1 (1995)
Publisher : Universitas Gadjah Mada

Cocoa pod devastation caused by combine inoculations between pest and pathogen., either between Helopeltis theobromae and Botryodiplodia theobromae or between H. theobromae and Colletotrichum gloeosporioides, more sever than total single inoculation only by pest (H. theobromae) or pathogen (B. theobromae and C. gloeosporioides).

Elektron Mikroskopi dan Imunogenisitas Baculovirus oryctes Isolat Yogyakarta Y. B. Sumardiyono
Jurnal Perlindungan Tanaman Indonesia Vol 1, No 1 (1995)
Publisher : Universitas Gadjah Mada

Palm rhinoceros beetle (Oryctes rhinoceros) was infected per os with Yogyakarta isolate of Baculovirus oryctes in laboratory condition. Midguts of infected beetle obtained were then extracted for further nucleoprotein purification by centrifugation method. Electron microscopy studies on purified nucleoprotein revealed rod-shape viruses with rounded end measured 190×94 nm in average. One end of the particle showed tail-like structure. Antibodies against the virus were obtained by immunization to rabbit, and reacted against either purified virus or extract of infected beetle, but not against extract of healthy beetle.

Various Stages of Pink Fungus (Upasia salmonicolor) in Java Ambarwati Harsojo Tjokrosoedarmo
Jurnal Perlindungan Tanaman Indonesia Vol 1, No 1 (1995)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.9305

Pink fungus in Java is classified as Upasia salmonicolor (Basidiomycetes: Corticiaceae) and its anamorph is Necator decretus. This fungus is a serious pathogen which attacks many woody plants. The pink fungus in Java exhibits five developmental stages on the surface of the host bark: I. An initial cobweb stage as thin, white, cobweb-like hyphal layer, which creeps over the surface of the bark, during which penetration of the host occurs; II. Pseudonodular stage, as conical white pustules occurring only on lenticels or cracks, and only on shady side of branches; III. Teleomorph, occurs as pink incrustation and pink pustules on shady side of branches; IV. Nodular stages, as globose white pustules occurring chiefly on intact bark, but also on the lenticels or cracks, on exposed side of branches; V. Anamorph, as small orange-red sporodochium, on exposed side of branches.

Properties of Oryctes Baculovirus Isolated in Indonesia Jun Kobayashi; Susamto Somowiyarjo
Jurnal Perlindungan Tanaman Indonesia Vol 1, No 1 (1995)
Publisher : Universitas Gadjah Mada

An Indonesian isolate of Oryctes baculovirus was purified from infected midguts of the rhinoceros beetle (Oryctes rhinoceros) by centrifugation on a 10–40% (w/v) sucroese gradient. Morphological features of nucleocapsid including a tail-like projection were very same as those previously reported. Both protein components of purified particles and restriction fragment electrophoresis profiles of viral DNA were similar to those of their isolates of Oryctes baculovirus, although there were some differences.

Fluktuasi Populasi Wereng Coklat (Nilaparvata lugens Stal) di Kalitirto Yogyakarta Selama 10 Musim Padi Kasumbogo Untung
Jurnal Perlindungan Tanaman Indonesia Vol 1, No 1 (1995)
Publisher : Universitas Gadjah Mada

Population observations of the brown planthopper and its predators were conducted at Kalitirto Agriculture Experimentation Station, Yogyakarta during 10 seasons from 1986/1987 Planting Season up to 1991/1992. Five rice varieties were planted under randomized completely block design consisted of one susceptible varieties (IR 36 and IR 64). No pesticides applied during the experimentation. The data showed that BPH populations were constantly low and under subeconomic condition. The BPH populations tend to decrease from first season to the following seasons. The populations of BPH were fully controlled by the population of predators complex. The total of predator populations always surpasses BPH population in every season. The ratio of predators and BPH’s population were increasing as planting seasons went along. The level of BPH resistance of rice varieties do not affect the fluctuation of BPH population and the total predators and BPH populations ratio.

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Reviewer

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Contact Name
Y. Andi Trisyono

Contact Email
anditrisyono@ugm.ac.id

Phone
+62274-523926

Journal Mail Official
jpti.faperta@ugm.ac.id

Editorial Address
Jalan Flora No. 1, Bulaksumur, Sleman, Yogyakarta, 55281

Location
Kab. sleman,

Daerah istimewa yogyakarta

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Y. Andi Trisyono

Contact Email anditrisyono@ugm.ac.id

Phone +62274-523926

Journal Mail Official jpti.faperta@ugm.ac.id

Editorial Address Jalan Flora No. 1, Bulaksumur, Sleman, Yogyakarta, 55281

Location Kab. sleman, Daerah istimewa yogyakarta INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Y. Andi Trisyono

Contact Email
anditrisyono@ugm.ac.id

Phone
+62274-523926

Journal Mail Official
jpti.faperta@ugm.ac.id

Editorial Address
Jalan Flora No. 1, Bulaksumur, Sleman, Yogyakarta, 55281

Location
Kab. sleman,

Daerah istimewa yogyakarta

INDONESIA