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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: Prof. (Riset) Dr. Ir. Ika Mustika, S.U. Siwi Indarti
Jurnal Perlindungan Tanaman Indonesia Vol 19, No 2 (2015)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.17544

Abstract

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Pengendalian Diaphorina citri (Vektor Penyakit CVPD) dengan Metarrhizium anisopliae Kardi Raharjo; Susamto Somowiyarjo; F. X. Wagiman
Jurnal Perlindungan Tanaman Indonesia Vol 6, No 1 (2000)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12404

Abstract

CVPD is transmitted by Diaphorina citri. Measures to control D. citri by using biological controlling agents have opportunity to reduce insecticide application. The objectives of the research are: to measure effectiveness of Metarrhiziurn anisopliae (Metch.) Sorok. in controlling D. citri, effect fructose and time application namely before and after insect infestation. The first phase of the research phase has been conducted in Temanggung, Completely Randomize Design (CRD) factorial with three time replication. Factor I: sterile water without fructose, concentration 10^6 conidia/ml without fructose, concentration 10^8 conidia/ml without fructose, concentration 10^10 conidia/ml: without fructose, sterile water + fructose 5 mg/ml, concentration 10^6 conidia/ml without fructose 5 mg/ml, concentration 10^8 conidia/ml + fructose (fungi application before insect infestation) and W1 (fungi application after insect infestation). Research phase II was carried out with the best treatment combination compare with control treatment in Temanggung and Bantul. The results of experiment showed that the initial die of D. citri caused by M. anisopliae infection are on 4-6 days after application. The application of M. anisopliae at concentration 10^10 conidia/ml without fructose, applied after insect infestation was most effective. The application after insect infestation was more effective compare with application before insect infestation especially on 4 days after application, but on 35th days after application there was no significant difference. Fructose has no effect to mortality of D. citri.
Ketahanan Jamur terhadap Fungisida di Indonesia Christanti Sumardiyono
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.11869

Abstract

Plant diseases control with fungicides had been practised for decades in Indonesia. The orientation of consumers to have high quality agriculture product caused the intensif use of pesticides including fungicides. Systemic fungicides were used as therapeutant agens for disease control. Intensively used and sublethal dose of systemic fungicides induced fungi to be resistant. The purpose of this article was to describe the occurrence of developing fungicides resistance strains. Several publications reported that there were some fungicides which induced resistant strain i. e. benomyl and its metabolites, metalaxyl and simoksanyl. It was assumed that the resistant strain occurred due to the genetic of pathogens, mode of action of fungicides and method of application. Resistance to contact or nonsystemic fungicides was rare compared with systemic one. The single site action of systemic fungicides caused mutation of fungus to be resistant. This fenomena did not occure against contact fungicides with multisite actions. Among systemic fungicides, benomyl resistant strains were more frequently reported than the others. To avoid those problems the authors strongly suggested to use Integrated Pest Management in plant disease control. Reduced frequency of fungicides applications, using recommended dose and mixture of contact and systemic fungicides are several tactics to delay resistance. Risk assessment and monitoring of fungicides resistance at molecular level is also suggested.
Sclerotia of Rhizoctonia solani, their Production on Infected Rice Plants and their Population in Different Soil Types H. Utami; Sudir Sudir
Jurnal Perlindungan Tanaman Indonesia Vol 3, No 2 (1997)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12965

Abstract

Production of sclerotia of Rhizoctonla solani on infected rice plants and their population in different soil types were evaluated during the year of 1992/1993 and 1993/1994. The production of sclerotia was estimated on 20 diseased rice plants and plant debris (rice straw) placed on soil surface, in 10 cm depth, and in 20 cm depth. The population of sclerotia in the soil was estimated by separating the sclerotia from soil samples collected from different soil previously planted with different crops. Data indicated that during the rainy season of 1992/1993, the mean sclerotia produced were 14.85 and 10.95 per hill on the variety of IR64 and non-lR64, respectively. While during the dry season of 1993 the mean sclerotia produced on these varieties were 7.50 and 7 .25 per hill. On both varieties, the production of sclerotia was positively correlated with disease  severity of sheath blight, as indicated by the correlation coefficient of 0.90 and 0.70, for the variety of IR64 and non-IR64, reepectively. Their close relationship was estimated by the model of Y=-29.00+1.16x (R^2=0.82) and Y=-2.94+0.35x (R^2=0.45), for the variety of IR64 and non-IR.64, respectively. The production of sclerotia on the infected rice straw was significantly affected by the soil depth where the diseased straw were kept. On the straw of IR64, the sclerotia produced were 7.00, 5.25, and 1.25, when the straw were kept in the depth of 0, 10, and 20 cm, respectively. While on the straw of non-IR.64 variety, the sclerotia produced were 7.75, 5.25, and 0.50. when the straw were kept in the depth of 0, 10, and 20 cm, respectively. Highest number of sclerotia was observed in Ultisol soil previously planted with corn, while the smallest was in Ultisol previously planted with mungbean.
Pengaruh Berbagai Ekstrak Metanol Tumbuhan terhadap Mortalitas Juvenil Instar-2 dan Penetasan Telur Nematoda Sista Kentang (Globodera rostochiensis) Iis Nur Asyiah; Elin Yulinah; Mumu Sutisna; Buchari Buchari
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.12113

Abstract

The research was conducted to know the influence of methanol extracts from 19 plant species to the second-stage juvenil (J2) mortality and to the hatching of the potato cyst nematode, Globodera rostochiensis, the new pest of potato in Indonesia. The research was conducted by using complete random design, where each treatment was repeated 3 times. Cyst hatching was conducted by using ZnSO4 10-2 M. Data obtained to be analyzed with the ANOVA and continued with the DMRT 5%. The result indicated that from 19 species of examined plant, clove flower and leaf methanol extract with concentration 10.000 ppm inflicted 100% and 96,7% J2 mortality and others inflicted <50% 12 mortality. Clove flower and leaf methanol extract permanently inhibited of cyst hatching, methanol extract of Andrograpis puniculata, Capsium frutescens, Chrysanthemum sp., and Allium sativum inhibited of cyst hatching non permanently, while other plants extract methanol didn't inhibit of cyst hatching.
Deteksi Molekuler Penyebab Penyakit Kuning (Tomato chlorosis virus dan Tomato infectious chlorosis virus) pada Tanaman Tomat Resti Fajarfika; Sedyo Hartono; Sri Sulandari; Susamto Somowiyarjo
Jurnal Perlindungan Tanaman Indonesia Vol 19, No 2 (2015)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.17250

Abstract

This research was aimed to detect the ToCV and TICV caused yellowing disease on tomatoes by molecular detection. Leaf samples of symptomatic plants were taken from Ketep (Magelang), then the leaves were identified by reverse transcription-polymerase chain reactions (RT-PCR) using specific primer ToCV-CF/ToCV-CR (360 bp) and TICVCF/TICV-CR (416 bp). The result of nucleotide sequence analysis, amino acid and PCR product phylogenetic sequences were verified as TICV, it showed that TICV from Magelang belongs to the same group with TICV from Japan, North America and Europe, France, Italy, and USA. INTISARIPenelitian ini bertujuan untuk mendeteksi keberadaan ToCV dan TICV penyebab penyakit kuning pada tanaman tomat. Daun bergejala diambil dari Desa Ketep (Magelang), selanjutnya diuji denganreverse transcription-polymerase chain reactions(RT-PCR) menggunakan primer spesifik ToCV-CF/ToCV-CR (360 bp) dan TICV-CF/TICV-CR (416 bp). Hasil analisis sekuen nukleotida, asam amino, dan filogenetik produk PCR teridentifikasi sebagai TICV yang menunjukkan bahwa TICV isolat Magelang berada dalam satu kelompok dengan isolat TICV asal Jepang, Amerika Utara dan Eropa, Perancis, Italia, dan USA. 
Kajian Beberapa Jamur Entomopatogenik pada Ulat Daun Kubis Hijau, Plutella xylostella Tri Harjaka; Suryanti Suryanti
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.12362

Abstract

The use of entomopathogenic fungi for controlling Diamond Back Moth (DBM), Plutella xylostella L. still limited. Even though there are some entomopathogenic fungi could infect DBM. The aim of this research is to know the kind of entomopatogenic fungi on DBM to be used as biological control agent. Some isolates of  fungi were collected  from DBM infected by  the fungi  on field  in Central Java and  Yogyakarta. Fungi infecting DBM was  isolated, and cultured on Potato Dextrose Agar (PDA). Purification, identification and  infection tests were done to know  the potency of each fungal isolates. The results showed thatfive species of fungi infecting DBM, are Beauveria bassiana, Metarhizium anisopliae, Paecilomyces sp. Entomophthora sp.and Hirsutella sp.
Evaluasi Lanjut Penyebaran Lalat Argentina sebagai Pengendali Gulma Siam Tri Harjaka; Soeprapto Mangoendihardjo
Jurnal Perlindungan Tanaman Indonesia Vol 16, No 1 (2010)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11750

Abstract

The stem-galling fly, Cecidochares connexa is one of the natural enemies introduced into Indonesia for the control Siam weed (Chromolaena odorata). The research investigated to know the spread and establisment of C. connexa in Central Java and East Java. Survey was done in six districts started from Gunung Kidul until Madiun for sampling of Siam weed stems and calculate the parasitations of C. connexa. The results showed that C. connexa as natural enemies of Siam weed has established in Central Java and East Java with parasitation of stem reached 54.33%. C. connexa have spread more than 200 km from first site-released location in Wanagama I, Yogyakarta.
Interaction of Fusarium oxysporum with Meloidogyne incognita on Roselle K. H. Ooi; B. Salleh; M. H. Hafiza; A. A.A. Zainal; M. Said
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.12754

Abstract

Forty isolates of Fusarium oxysporum were tested for their pathogenicity to roselle (Hibiscus sabdariffa L. var. sabdariffa) in a plant house. The most virulent isolate was later used in a disease complex experiment with a root-knot nematode Meloidogyne incognita. Disease severity of roselle seedlings inoculated with a combination of fungus and nematode was higher than those inoculated with either fungus or nematode individually. Seedlings that were inoculated with fungus two weeks after nematode inoculation showed the highest disease severity compared to that inoculated with nematode two weeks after fungal inoculation or that inoculated simultaneously with both pathogens. It seems that root infections by M. incognita increased the colonization of roselle by F. oxysporum and subsequently caused higher damage to the roselle seedlings. The high wilt incidence in the presence of M. incognita and F. oxysporum may be due to the synergistic relationship between these two pathogens.
Characterization of A Baculovirus of Spodoptera litura (Lepidoptera : Noctuidae) Isolated from Yogyakarta Arman Wijonarko; Sedyo Hartono; Tri Harjaka; Nuri Yusmarlita
Jurnal Perlindungan Tanaman Indonesia Vol 13, No 1 (2007)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11813

Abstract

A Baculovirus has been isolated from cadaver of larvae of Spodoptera litura, a Noctuidae of agricultural pest, importance due to its wide-range hosts and the damage to their respective host. Phase contrast light microscopy observation from infected larvae showed that the fat body, hemocyte cells, and cells surrounding the trachea or tracheolus were the most tissue invaded by polyhedra. Transmission electron microscopy analysis of the occlusion body purified from diseased larva showed that the baculovirus envelope containing multiple nucleocapsid. Digestion of viral DNA with three restriction enzymes showed that the genome pattern of baculovirus isolated from Bantul were close to SpliNPV isolated from Japan and those of Spodoptera littoralis and quite distinct from those isolated from Southeast Asia region. Bioassay test performed on first to fifth instar larvae showed that the virus effectively control the young larvae, but showed some level of resistance against older larvae of Spodoptera litura.

Page 15 of 51 | Total Record : 509

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