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Y. Andi Trisyono
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anditrisyono@ugm.ac.id
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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 7 Documents
 1 
Search results for , issue "Vol 15, No 2 (2009)" : 7 Documents clear
Survey on the Occurrence of Viruses Infecting Cucurbits in Yogyakarta and Central Java Budi Setiadi Daryono; Keiko T. Natsuaki
Jurnal Perlindungan Tanaman Indonesia Vol 15, No 2 (2009)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11769

Abstract

Cucurbits are grown throughout the Java Island as dry season crops. Plants having mosaic, mottling, chlorosis and leaf distortion symptoms were frequently found in most of the cucurbit fields during the survey which conducted in Central Java including Sleman, Kulon Progo, and Klaten during July–September 2000 and 2001. Using double antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA); Cucumber mosaic virus (CMV), Cucumber green mottle mosaic virus (CGMMV) and Kyuri green mottle mosaic virus (KGMMV) were found infecting cucurbits. CMV was widespread, infecting 48.9% of the samples tested followed by CGMMV (12.8%) and KGMMV (6.4%), while others samples (31.9%) were not tested, double infections were common with 8.5 % of the samples being infected with two viruses (CGMMV and KGMMV) and 34% with three viruses (CMV, CGMMV, and KGMMV). Severe mosaic and mottle symptoms were associated most often with single infection of CGMMV and KGMMV respectively. In addition, these are the first detections of CGMMV and KGMMV infecting cucurbit plants in Indonesia.
Quorum Sensing: Suatu Sistem Komunikasi Bakteri Fitopatogen, Peranannya Pada Proses Infeksi, dan Peluangnya sebagai Basis Pengembangan Strategi Baru dalam Pengendalian Penyakit Tumbuhan Hadiwiyono Hadiwiyono
Jurnal Perlindungan Tanaman Indonesia Vol 15, No 2 (2009)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11765

Abstract

Previously, it is thought that bacterium is an autonomous unicellular organism with no capacity for collective behavior. Now the paradigm has changed since there are communication between intercell bacteria. The phytopathogenic bacteria are able to regulate gene expression which play an important role in infection process in the host plant. The gene expression regulation involves an intercell communication in the population and this is called as quorum sensing (QS). This paper reviews the QS as a communication system of phythopathogenic bacteria, its role in infection process on the host plant, and its opportunity as the basis of novel strategy development on plant disease control.
Pengimbasan Ketahanan Pisang terhadap Penyakit Layu Fusarium dengan Asam Salisilat In Vitro Suryanti Suryanti; Yufita Dwi Chinta; Christanti Sumardiyono
Jurnal Perlindungan Tanaman Indonesia Vol 15, No 2 (2009)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11770

Abstract

Salicylic acid (SA) is an important signal in plant defense. It is used as induced resistance agent against Fusarium wilt. An artificial induction was conducted by shaking the shoot groups of banana tissue culture in liquid medium of Murashige-Skoog (MS). MS medium was added with 0 ppm (as control), ⅛ LC50, ¼ LC50, ½ LC50, and LC50 concentration of SA. Alive shoot groups were subcultured for about three months and were acclimated. Resistance test had been conducted in glass house by inoculated six months old banana seedlings with Fusarium oxysporum f.sp. cubense (Foc). Leaves symptom were observed based on Leaf Symptom Index (LSI) and corm discoloration based on Rhizome Discoloration Index (RDI). The result of this research showed that induced banana seedlings had higher plant resistance to Fusarium wilt than control.
Resurjensi Serangga Hama Karena Perubahan Fisiologi Tanaman dan Serangga Sasaran Setelah Aplikasi Insektisida Yuni Ratna; Y. Andi Trisyono; Kasumbogo Untung; Didik Indradewa
Jurnal Perlindungan Tanaman Indonesia Vol 15, No 2 (2009)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11766

Abstract

The use of insecticides at sub-lethal dosage may induce insect resurgence. Factors contributing the insect resurgence include mortality of natural enemies, mass migration, improvement in plant nutrition, or increase in insect reproductive capacity which works individually or in combinations. This article provides a comprehensive review from recent publications, particularly those dealing with the impact of insecticide applications on plant nutrition and insect reproduction, and function to upgrade our knowledge since most publications in Indonesia were made in the 1980s. The insecticides together with its metabolites and conjugates could function as plant growth regulators, increase absorption, improve the nutritional content, influence the biochemical and ultrastructural aspects of the plant, or protect the plant from stresses. An increase in the nutritional value of the plant would increase feeding rate, fecundity, and longevity of the insects. Furthermore, insecticides could also directly stimulate the reproductive capacity of the insect. All of these impacts might end up in increasing the population of insect after application of certain insecticides. Research findings related to the elucidation on the mechanism underlying the phenomenon of resurgence could be used in considering the registration of new insecticides or extension of the existing insecticides.
Respons Fungsional Burung Pentet (Lanius sp.) terhadap Belalang Kembara (Locusta migratoria manilensis) Siti Astuti; Kasumbogo Untung; F. X. Wagiman
Jurnal Perlindungan Tanaman Indonesia Vol 15, No 2 (2009)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11771

Abstract

The functional response of predatory bird, Lanius sp. (Passeriformes: Laniidae) on migratory locust [Locusta migratoria manilensis (Orthoptera: Acrididae)] had been studied under restricted condition. The migratory locusts were reared in the green house. Second and fourth nymph instars along with adult stages of the migratory locust were used in this trial. Maximum feeding and functional response of the predatory bird against the migratory locust were determined. Research protocol used follows Holling’s model. Results showed that the maximum feeding of the predatory bird was very high i.e. against 2nd and 4th instars and adult of the locust were 2.75 preys/minute, 0.13 preys/minute, and 0.09 preys/minute; respectively. The relationship between predatory bird and migratory locust fitted with the Holling’ s type 2 functional response. The high feeding rate of the predatory bird revealed that the bird is a promising candidate of biological control agent on migratory locust.
Identifikasi dan Pengendalian Jamur Busuk Putih Buah Salak dengan Ekstrak Bunga Kecombrang (Nicolaia speciosa) Aries Pratomo; Christanti Sumardiyono; Y. M.S. Maryudani
Jurnal Perlindungan Tanaman Indonesia Vol 15, No 2 (2009)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11767

Abstract

One of the important disease on snakefruit (Salacca edulis) is fruit rot disease with white symptom. Control of snake fruit diseases is better when natural compounds rather than chemicals pesticide were used which might cause consumer hazard. Several of plant extract i.e. from Zingiberaceae which have antimicrobial activity had been studied. The purpose of this study were to identify the pathogen of white rot and to know the effect of torch ginger’s flower (Nicolaia speciosa) extract on disease development. The spores was identified under microscopic condition from diseased fruits and isolates. Torch ginger’s flowers was extracted in ethanol. After removal of the ethanol the crude extract was dissolved with distilled water. Food Poisoned Technique was done to evaluate its influence in vitro. Both detached and clustered fruits were sprayed with the extract then inoculated with the pathogen. The result showed that the pathogen was Chalaropsis sp. Detached snakefruit was more susceptible to Chalaropsis sp. infection than those in cluster. In vitro test showed 48–50 % of torch ginger’s flower extract in water inhibit 90% of colony growth. The extract inhibited the development of Chalaropsis sp. in detached snakefruit or in cluster ones. Concentrated extract protected snakefruit up to 100% from Chalaropsis sp. infection.
Penapisan PGPF untuk Pengendalian Penyakit Busuk Lunak Lidah Buaya (Aloe vera) di Tanah Gambut Supriyanto Supriyanto; Achmadi Priyatmojo; Triwidodo Arwiyanto
Jurnal Perlindungan Tanaman Indonesia Vol 15, No 2 (2009)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11768

Abstract

Aloe (Aloe vera) planted in West Borneo peat soil is well known as having the best product quality in Indonesia. Soft rot disease is one of the constraints of Aloe cultivation on peat soil. Many methods have no significant result for controlling this disease. This research objectives are to obtain Plant Growth Promoting Fungi (PGPF) for controlling Aloe bacterial soft rot in peat soil. The research was conducted in Clinical Laboratory of Plant Pathology and glass house of Faculty of Agriculture, Gadjah Mada University, Yogyakarta from October 2008 to September 2009. The methods included fungal isolation from peat land, hypovirulent and PGPF ability test, and biological control test in the glass house. Among 42 peat soil fungi tested, 28 isolates were hypovirulent and only 2 isolates i.e. SNTH001 (Penicillium sp.) and SNTH003 (Aspergillus sp.) showed the PGPF ability. Glass house trial showed that single application of SNTH001 and SNTH003 isolates were able to increase the growth of Aloe. In the biological control of Aloe soft rot disease test showed that the lowest intensity (25%) might be obtained by using SNTH001 isolate.

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