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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 13 Documents

1 2

Search results for , issue "Vol 2, No 1 (1996)" : 13 Documents clear

Hama Penggerek Buah Kakao - Kendala Utama Industri Kakao Indonesia dan Saran Pengelolaannya Soekadar Wiryadiputra
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 1 (1996)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.9361

Outbreak of cocoa pod borer has occurred inCentral Sulawesiand other Indonesian provinces since 1991. The reason of the outbreak has not been clearly defined, however, it was presumed that the event look place after tremendous expansion of cocoa plantation in the last two decades. Until December, 1995 the pest has infested 11 provinces including several main cocoa producing areas ofIndonesia. Total cocoa area damaged by the pest is about 40,000 ha. Bioecological aspects and management of the pest were reviewed from some recent literatures. These information should be useful to arrange the control strategy of the pest inIndonesia. Control measures developed in other countries can be adopted directly in handling the pest, especially for short term practices.

Kloning Gen Coat Protein SMV dengan Pendekatan PCR Sismindari Sismindari; Sudjadi Sudjadi
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 1 (1996)
Publisher : Universitas Gadjah Mada

SMV is RNA virus had to be converted to the first strand DNA using oligo (dT) and murine reverse transcriptase. Amplification of coat protein gene region was carried out by Polimerase Chain Reaction (PCR) with two primers, 5’-TACATCTTGGAACCAATGGCAGGCAAGGAGAGAAG-3’ and 5’-AGGACAACAAACATTGCCG-3’. The PCR product was blund ended by S1 nuclease, and ligated into SmaI digested pUC18 and phosphatase treatment by calf intestine phosphatase. Ligation mixture was used to transform E. coli DH5α. Recombinant plasmid was digested with EcoRI and HindIII showed 0,8 kb fragment. Southern blot analysis at high strigency using PCR using PCR product as a probe shows that the 0,8 kb fragment produced intense signal.

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.

Penghambatan Penyakit Damping Off (Rebah Semai) pada Semai Pinus dengan Ekstrak Biji Nyiri (Xylocarpus granatum) Siti Muslimah Widyastuti
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 1 (1996)
Publisher : Universitas Gadjah Mada

Forest Development inIndonesiais based on sustainable concept. To support this policy, forest protection must be done based on environmental approach. In this approach the use of synthetic pesticide must be minimized. Consequently it is necessary to find out alternative method to substitute the use of synthetic pesticide. Phytofungicide is one of the alternative for the synthetic pesticide. The aim of the research was to evaluate the potential of nyiri (Xylocarpus granatum Koen) seed as phytofungicide for controlling Fusarium sp., a pathogen of pine damping off disease. Evaluation was done based on the activity of the extracted nyiri seeds collected from Cilacap mangrove in inhibiting the spore germination and germ tube length in the laboratory, and suppressing the disease intensity in green house. The result showed that the extract of nyiri had antifungal activity against the pathogen tested. This is the first report on the activity of nyiri as phytofungicide for plant pathogens.

Keparahan Penyakit Hawar Daun Jingga pada Beberapa Galur dan Varietas Padi Sudir Sudir; Suparyono Suparyono
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 1 (1996)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.9359

Disease severity of orange leaf blight (OLB) was observed on several different genotypes of rice in Sukamandi, Pusakanegara, and Batang Research Station during the dry season of 1993. Results indicated, that except in Batang, under natural condition OLB developed well in all locations. Different responses were observed among rice genotypes, indicated that different level of resistance to OLB are available in rice germplasm. Out of 230 rice genotypes observed in bastard population, 4 were rated resistant (disease severity 8.5-10%), 7 were moderately resistant (disease severity 15-20%). No resistant or moderately resistant genotypes were observed among 24 genotypes in yields trials, 16 in adaptability trials, 12 in promising lines demonstration, and 49 in hybrid rice trials.

Penyakit Mosaik Pisang, Reaksi Inang, dan Pemurnian Virus Sri Sulandari; Edy Purnawan
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 1 (1996)
Publisher : Universitas Gadjah Mada

Banana var. Koja showed mosaic symptoms sontained in Kotagede, Yogyakarta used in the studies. The virus then isolated with single lesion method on Chenopodium amaranticolor, and propagated on Nicotiana tabacum var. Xanthi. The result of host reaction study showed that infected Nicotiana tabacum var. Xanthi, N. tabacum var. Samsun, Cucumis sativus, and Lycopersicon esculentum produced systemic symptoms, while Chenopodium amaranticolor produced necrotic local lesions. Infected Vigna unguiculata did not produce any symptom. The purified virus obtained with the method of Scon showed A260/A280=1.21, with single protein m.w. 24.0 ×103. Virus showed serological relationship to CMV. All the result indicated that causal agent of banana mosaic disease has some similar properties with CMV.

Kajian Bioekologi Pasteuria penetrans Mulyadi Mulyadi; B. Triman; Bambang Rahayu TP
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 1 (1996)
Publisher : Universitas Gadjah Mada

In bioecological studies of P. penetrans, six experiments were done i.e. study the nematode hosts of P. penetrans; the effect of temperature, soil moisture, spores storage length, soil chemicals (compound fertilizer, carbofuran, and mancozeb) and methods of application on the pathogenicity of P. penetrans. The research results are as follows: (1) nematode hosts of P. penetrans are M. incognita, M. javanica, and M. graminicola; (2) temperature tested up to 100oC did not affect on the infectivity of P. penetrans; (3) the highest infectivity of P. penetrans was found on soil moisture 45% than on 0%-30%; (4) spores storage for one, two, and three year after effected the infectivity of P. penetrans; (5) treatment with carbofuran, mancozeb, and compound fertilizer did not affect on the infectivity of P. penetrans; and (6) the used of spores of P. penetrans in grounded tomato roots more effective than in soil and water suspension and more efficient than in soil.

Ekstraksi DNA Phytophthora palmivora Isolat Kelapa Achmadi Priyatmojo; Siti Subandiyah
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 1 (1996)
Publisher : Universitas Gadjah Mada

Coconut isolate of Phytophthora palmivora DNA was extracted from sporangium and mycelium using SDS and Proteinase-K method. Sporangium and mycelium were harvested from liquid and solid culture of Potato Dextrose medium. The result of the study showed that the DNA extracted from sporangium and mycelium of 8 days solid culture was seen as distinct band. On the other hand, the dNA from sporangium and mycelium of 24 days old liquid culture was fragmented with smear band appearance.

Penemuan Jerami sebagai Bahan Baku Budidaya Jamur Tiram Putih (Pleurotus ostreatus) di Fakultas Pertanian UGM Ambarwati Harsojo Tjokrosoedarmo
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 1 (1996)
Publisher : Universitas Gadjah Mada

Faktor Sosial Ekonomi yang Mempengaruhi Petani dalam Penerapan Pengendalian Hama Terpadu (PHT) Sunarru Samsi Hariadi
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 1 (1996)
Publisher : Universitas Gadjah Mada

For spreading concept of Integrated Pest Management (PHT), Agricultural Disease and Plant Controllers (PHP) and Field Agricultural Extension Workers (PPL) worked together for agricultural extension about integrated pest management through Field School of Integrated Pest Management (SLPHT), in the hope that farmers could adopt PHT in their rice field. The result of the research in Central Java and Yogyakarta Special Region Province showed that social economic factors namely farmers income, farmers knowledge about PHT, farmers attitude about PHT, and farmers participation in SLPHT influenced adoption of PHT.

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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

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