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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 516 Documents

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Dampak Andrografolid dan Dua Jenis Insektisida Sintetik sebagai Penghambat Makan Nephotettix virescens, terhadap Transmisi Virus Tungro I Nyoman Widiarta; Muhammad Muhsin; Dede Kusdiaman
Jurnal Perlindungan Tanaman Indonesia Vol 4, No 1 (1998)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.9832

The effect of andrographolide and two synthetic insecticides of pymetrozine and imidacloprid, an antifeedant against N. virescens (Distant), to the rice virus transmission were tested using test tube inoculation method in the green house under natural photoperiod and average temperature of 28.5oC. The root of tungro diseased plant were soaked for 24 hours into tested materials before acquisition feeding to test virus acquisition inhibition, while root of rice seedlings were soaked into tested material for 24 hours before inoculation feeding to test virus inoculation inhibition. The results of studies showed that andrographolide, pymetrozine, and imidacloprid significantly reduced virus acquisition and virus inoculation by N. virescens. Pymetrozine and andrographolide treatments to the tungro diseased plants at concentration of 20 ppm significantly reduced proportion of viruliferous vector to become 17% in average. The increasing concentration into 40 ppm of both materials did not significantly reduce proportion of viruliferous vector. Imidacloprid at concentration of 0.01 and 0.02 ppm, completey inhibited feeding acquisition. Pymetrozine and andrographolide treatment at concentration of 20 ppm to the rice seedlings reduced significantly virus transmission by N. virescens to become 69% in average. The increasing concentration of pymetrozine up to 40 ppm did not reduce virus transmission rate. Imidacloprid at concentration of 0.01 ppm and 0.02 ppm reduced virus transmission to become 25% and 39%, respectively. It was concluded that imidacloprid was the most effective antifeedant reducing virus transmission by N. virescens among tested chemicals.

Inventarisasi dan Identifikasi Jenis Tumbuhan Pengendali Hama di Kecamatan, Kabupaten Rembang, Provinsi Jawa Tengah Edhi Martono
Jurnal Perlindungan Tanaman Indonesia Vol 7, No 1 (2001)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.10018

The economic crisis also hit hard the agricultural sector, as production inputs such as synthetic chemical pesticides and fertilizers became expensive and at times hard to get. But the ingenious and innovative thinking of the farmers were sometimes proven invaluable. They look back at the practices inherited from their ancestors: using plant materials as botanical pesticides as well as compost. While earlier the farmers were told that botanicals' use promotes safer environment and cleaner products, later they chose the alternative with more economical consideration. Unfortunately they have little, if available, records and notes regarding these promising plant materials. Not much have been done in the past to identify and record the kinds of plant and plant materials with pesticidal properties. This study was done based on this premise. Rembang regency in north-eastern Central Java is a region with diverse area, starting from low coastal land to woody tropical hills. The farmers living in the area has long known the use of botanicals, but not as intensive as during the present (the year 1998–2000). The systematic and thorough inventory and identification of such botanicals, however, has yet to be done. Therefore a survey was conducted in Kecamatan Pamotan, Rembang regency, by attending the village gathering, talking to elders and leaders, and through snowball effect method collecting information from farmers who use botanicals to protect their crops. Visit to the field and woods to identify the plants were also carried out. The result is records on the kinds, relative number, the use and other important facts which may serve as the basis for further improvement of these environmentally friendly practices.

Isolasi Bakteri Inti Es pada Kentang Triwidodo Arwiyanto
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 1 (1996)
Publisher : Universitas Gadjah Mada

Frost injury is one of the limiting factors in potato production in Dieng (2000 m above sea level), Central Java. The damage caused by frost has been recorded since long time ago, however, there is no studies about this matter. The objective of the present study is to isolate ice nucleation active bacteria which reside epiphytically at the surface of potato leaves. Potato and several crop leaves were collected and the ice catalyst was detected from leaf-washing. The bacteria were isolated on Nutrien Agar and Nutrien Agar Glycerol medium. The result indicated that ice catalyst was detected from the leaf washing of potato (Solanum tuberosum L.) and broad bean (Vicia faba L.) but not from others. The ice catalyst was not detected from the extract of surface soil, neither. The ice nucleation active bacteria were successfully isolated from potato leaf and were identical to Erwinia ananas in their bacteriological properties.

Prevalensi Nematoda Parasit pada Pertanaman Pisang di Daerah Istimewa Yogyakarta Siwi Indarti; Bambang Rahayu TP; Siti Subandiyah; Lilis Indarti
Jurnal Perlindungan Tanaman Indonesia Vol 17, No 1 (2011)
Publisher : Universitas Gadjah Mada

A study to determine the prevalence and distribution of plant parasitic nematodes associated with banana was undertaken in banana growing areas at four districts (Bantul, Gunung Kidul, Kulon Progo, and Sleman) of Yogyakarta Special Province. Seven genera of plant parasitic nematodes were found on these area: Criconemoides, Helicotylenchus, Hoplolaimus, Meloidogyne, Pratylenchus, Radopholus, and Rotylenchulus. Genera Hoplolaimus and Meloidogyne were distributed at all districts and occurring in soil and root samples of banana cultivars, Ambon, Kepok, Koja, Klutuk, Raja, Tanduk, and Uter, respectively. Four genera, Hoplolaimus, Meloidogyne, Pratylenchus, and Radopholus were dominant and were found with high level of population than the others on each district. Pratylenchus mostly was found on banana cv Kepok with average population 348,2–2057,3 nematodes on total samples of 5g banana root and 100g soil.

Asosiasi Sitophilus oryzae (Col.: Curculionidae) dan Tribolium castaneum (Col.: Tenebrionidae) dalam Beras: Pertumbuhan Populasi dan Kerusakan Beras F. X. Wagiman; Praba Kusumaningrum SSW; Samsuri Tarmadja
Jurnal Perlindungan Tanaman Indonesia Vol 5, No 1 (1999)
Publisher : Universitas Gadjah Mada

The association of Sitophilus oryzae (Lin.) (Col.: Curculionidae) and Tribolium castaneum (Herbst.) (Col.: Tenebrionidae) in the white rice, IR64 variety, was studied in the laboratory. Objective of the study was to determine the influence of the association upon their population growth and the white rice deterioration. Adults of the two insect-pest species as many as (a) 50 S. oryzae, (b) 50 S. oryzae and 50 T. castaneum, and (c) 50 T. castaneum were cultured on 0.5 kg of the white rice for two months period. The growth rate of the species was assumed to fit exponential pattern. The results showed that the growth rate of S. oryzae population when it was cultured together with T. castaneum was (r=0.0475) significantly lower than it was cultured alone (r=0.0586), on the other hand, the growth rate of T. castaneum (r=0.0366) when it was cultured together with S. oryzae was significantly higher than it was cultured alone (r=0.0288). The presence of T. castaneum might cause an interference competition for S. oryzae, while broken rice as a result of S. oryzae attack might be a good food source for T. castaneum. The combination of attack pf the two beetle species significantly reduced the white rice quantity and quality; it increased the broken rice, water content, and mustiness.

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.

Effect of Diapause on Development and Reproduction of White Rice Stem Borer Scirpophaga innotata Walker (Lepidoptera: Pyralidae) Teddy Suparno
Jurnal Perlindungan Tanaman Indonesia Vol 4, No 2 (1998)
Publisher : Universitas Gadjah Mada

The objective of this study was to determine the effect of diapause on the development and reproduction of white rice stem borer (WRSB), Scirpophaga innotata Walker. During diapause, larvae of the WRSB, progressively decreased in weight at the rate 3.2 mg per week. Larvae lost 50 per cent of their initial body mass and had up to four stationary molts. Larvae became less active, lost pigmentation and leg rudimentary. The longer the larvae remained in diapause, the lighter in weight the emerging moths were, with fewer eggs and oocytes. After 5 months in diapause, the emerging moths weighted about half as much and had about half as many eggs and oocytes (230.0±35.8 egg cells in ovaries) as moths that emerged from nondiapausing larvae.

Recovery of Microsclerotia of Verticilium dahliae from Soil as Subjected to Various Treatments Loekas Soesanto; A. J. Thermorshuizen
Jurnal Perlindungan Tanaman Indonesia Vol 8, No 1 (2002)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.10090

The influence of various conditions on the survival of microsclerotia of Verticilium dahliae Kleb. was studied using three sources of field-collected potato stems densely covered with naturally-formed microsclerotia. Microsclerotia were found to survive for up 2 years in potato stems not incorporated in soil. The effects of temperature, pF, including weekly variations in temperature and or pF, and various modes of incorporating potato stem tissue on the survival of microsclerotia for up to 1 year in a sandy unsterilised soil was also studied for different microsclerotia sources. Inoculum source had no signicant effect. Remarkably few microslcerotia were recovered one day after the start of experiments varying between 5.5 and 31%. Recovery remained at this level or even decreased for another month and for several treatments, also after 3 and 6 months. Only after 3 to 12 months, recovery increased to values up to 5 times higher than that of one day after start of the experiment, but recoveries did not exceed the number of microsclerotia initially incorporated into the soil. Changes in recovery may be due to variation in the level of soil mycostasis which is affected by rate of nutrient exudation from microsclerotia.

Distribution Pattern of Aphis gossypii and its Coccinellid Predator Menochilus sexmaculatus in the Chilli Ecosystem F. X. Wagiman; M. Y. Hussein; Rita Muhamad; A. S. Sajap; A. Ismail
Jurnal Perlindungan Tanaman Indonesia Vol 4, No 1 (1998)
Publisher : Universitas Gadjah Mada

A study on the distribution pattern of Aphis gossypii Glover and its coccinellid predator, Menochilus sexmaculatus Fabricius, was conducted in a chilli ecosystem at the experimental field of Universiti Putra Malaysia. The study had revealed that distribution of M. sexmaculatus positively correlated with its prey distribution. The patterns of lateral and vertical distribution of A. gossypii and M. sexmaculatus were categorized as a clumped pattern.

Current Topics in Molecular Plant Pathology Keiko T. Natsuaki
Jurnal Perlindungan Tanaman Indonesia Vol 7, No 2 (2001)
Publisher : Universitas Gadjah Mada

Some current topics on molecular technology in plant pathology are reviewed. For detection and identification of plant pathogens, PCR with various modifications is applied. Study of nucleic acids sequence of pathogens gives keys for classification. For disease management, investigation of host reaction is also significant and mechanism of resistant genes is studied. In the study of plant reaction against pathogens, gene silencing is focused and compared with programmed cell death of animals. Since cost of molecular technology is still expensive, plant pathologists in Asia are expected to utilize their conventional techniques to realize ecologically sound plant protection for sustainable crop production.

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Y. Andi Trisyono

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+62274-523926

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

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Daerah istimewa yogyakarta

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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