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Y. Andi Trisyono
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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 6 Documents
 1 
Search results for , issue "Vol 12, No 1 (2006)" : 6 Documents clear
Faktor-Faktor yang Mempengaruhi Perilaku Petani dalam Pengendalian Hama dan Penyakit Tumbuhan melalui Analisis Jalur Sunarru Samsi Hariadi
Jurnal Perlindungan Tanaman Indonesia Vol 12, No 1 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11965

Abstract

The objective of the research was to know the factors influencing farmers' behavior in pest and disease control. Different control methods were practiced by farmers, such as resistant varieties, cultural techniques, biological control, and chemical control. In thisresearch, a survey method was used, total of farmer respondents were 60 people. Results of the research showed that factors influencing farmers' behavior in pest and disease control were age, perception, and work motivation. The increasing age of the farmers resulted better behavior in pest and disease control. A better perception of farmers towards pest and disease control, resulted better behavior in pest and disease control. The increasing work motivation of farmers, resulted better behavior in pest and disease control. Therefore, agricultural extension methods had to be developed by Field Extension Workers to increase work motivation and perception of famers, especially through farmer groups. Agricultural extension activities were best not only to increase farmers' knowledge, but also ability to control plant pest and disease, by using participal method in pleasure situation.
Penyakit Daun Keriting Kuning Cabai di Indonesia Sri Sulandari
Jurnal Perlindungan Tanaman Indonesia Vol 12, No 1 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11941

Abstract

The epidemic of pepper yellow leaf curl disease caused by Begomovirus has been observed in Indonesia since 2000. The virus can not be transmitted either by seed or mechanical inoculation. In the laboratory the virus can be transmitted by grafting and in the field, the disease spread over only by Bemisia tabaci Genn as a vector of the disease in persistant .manner. The disease widespread at some pepper production centers in Java,Sumatera, Bali, Kalimantan, and Sulawesi. The epidemic of the disease is influenced by some factors such as, changing of the planting pattern, the influence of global warming, planting of the new susceptible cultivars, and the formation of new virulence strain of Begomovirus. Beside attacking pepper, the virus can infect other plants and weeds that belong to Solanaceae, Compositae and some Leguminosae. The best method to control the disease is by the integrated program such as plantingthe healthy seedling of pepper, sanitation of weeds that grown souronding the pepper plantation, planting the tolerant cultivars of pepper, improving the planting pattern, and controlling the vector of the disease.
Inheritance of Resistance to Papaya Ringspot Virus-Papaya Strain in Melon (Cucumis melo L.) Budi Setiadi Daryono; Keiko T. Natsuaki`
Jurnal Perlindungan Tanaman Indonesia Vol 12, No 1 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11966

Abstract

Papaya ringspot virus (PRSV) is one of potyviruses causing severe damage to the production of cucurbit crops including melon, however resistant melons to PRSV have not yet commercially available. To find resistant genetic source of melons against PRSV, sixty three melons were manually inoculated with PRSV-papaya strain (PRSV-P) isolated in Thailand. Levels of resistance to PRSV-P accumulation in melon leaf tissue were evaluated using a combination of visual symptom observation and RT-PCR analysis. Among melons tested, Yamatouri, Mawatauri, PI 414723, and PI 371795 showed to be resistance to PRSV-P To study the inheritance of resistance to PRSV-P, breeding experiments were conducted by crossing the resistant Yamatouri with susceptible Vakharman. The genetic analysis results revealed that a single dominant gene conferred resistance to PRSV-P in Yamatouri and its generation.
Identifikasi Jenis dan Peranan Kelelawar Buah Penyesap Nira Kelapa di Kecamatan Kokap Kabupaten Kulon Progo Bambang Agus Suripto; Sumaryanti Sumaryanti; Christian Budi
Jurnal Perlindungan Tanaman Indonesia Vol 12, No 1 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11953

Abstract

Although in Kokap Subdistrict Kulon Progo inibitated by four species of fruit bats and Pteropus vampyrus, but it was not known which species visit and suck nira in coconut trees and considered to be pest by villagers. Since the direct technique is not applicable, it is necessary to develop indirect technique to study them. The objectives of this study are to identify the species of fruit bats which visit and suck nira ofcoconut trees using hair characteristics, and to determine the frequencies of their visit to coconut trees. The hair specimen references are collected from the field and from the laboratory collections. The hair specimens are collected from the surface of 750 nira tubes which applied by glued papers and installed in coconut trees as usual in five villages, prepared and identified. The visiting relative frequency is determined by percentage of the number of the tubes with hairs. In the study area are found Macroglossus minimus (Subfamilia Macroglossinae), Cynopterus brachyotis, Cynopterus horsfieldii, Roussetus amplexicaudatus, and Pteropus vampyrus (Subfamilia Pteropodinae). Based on the type and pattern of hair structure, Cynopterus brachyotis and Cynopterus horsfieldii are very difficult to difference each other, meanwhile the other three species are easily identified. Cynopterus brachyotis, Cynopterus horsfieldii, and Roussetus amplexicaudatus were positively visited and sucked the nira of coconut. The visiting frequencies to nira are Cynopterus (C. brachyotis and C. horsefieldii (12, 8%) and R. amplixicaudatus (5,8%). Conceptually, the fruit bats are more properly called them as nuisance animal, and it is not properly called them as pest of nira of coconuts.
Identifikasi Jamur Genus Aspergillus pada Gaplek di Kabupaten Gunung Kidul H. A. Oramahi; Christanti Sumardiyono; Nursamsi Pusposendjojo; Haryadi Haryadi
Jurnal Perlindungan Tanaman Indonesia Vol 12, No 1 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11959

Abstract

The study was carried out in Gunung Kidul Regency of Yogyakarta special. Dried cassava was taken from the district of Nglipar (north zone), Wonosari (center zone), Semanu and Rongkop (south zones) for identification of the genera of Aspergillus growing on the samples. Clasification of the zones was based on the degree of rainfall on the area. Dichloran 18% Glyserol Agar (DG-18) medium was used for isolating pathogen, while Czapek Yeast Extract Agar (CYA), Czapek Yeast Extract Agar with 20% sucrose (CYA 20S) and Malt Extract Agar (MEA) media were used for identification. The fungi were identified on the basis of both macroscopic and microscopic morphologies. The result showed that The Genera Of Aspergillus growing on dry cassava were A. flavus, A. niger, A. oryzae, A. foetidus, A. zonatus and A. tamarii. A. flavus was a predominant fungus that grow on dry cassava.
Eksplorasi, Pengujian, dan Identifikasi Khamir Antagonis terhadap Patogen Antraknos (Colletotrichum lagenarium) pada Semangka Kardi Raharjo; Christanti Sumardiyono; Nursamsi Pusposendjojo; Sismindari Sismindari
Jurnal Perlindungan Tanaman Indonesia Vol 12, No 1 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.11964

Abstract

Phyllosphere is one of habitat of yeast and the other microorganism included an antagonistic microorganism. The antagonistic yeasts have been isolated from watermelon phyllosphere on YM Agar medium. There are 30 isolates of yeast have been found. The pure culture of virulent isolate 115 of C. lagenarium used for testing the antagonistic ability of yeast isolates. Two yeast isolates namely K10 and K15 have highest ability to inhibit growth and development of C. lagenarium colony. From microscopic observation, the isolates K10 and K15 caused deflated on C. lagenarium hyphe. The result of identification of K10 is Candida sp. and K15 is Sirobasidium sp.

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