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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 516 Documents
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Pengaruh Daun Tanaman dalam Pemeraman terhadap Perkembangan Antraknos pada Pisang Ambon Toekidjo Martoredjo; Wahyu Budiasih; Ambarwati Harsojo Tjokrosoedarmo
Jurnal Perlindungan Tanaman Indonesia Vol 4, No 1 (1998)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5270.29 KB) | DOI: 10.22146/jpti.9834

Abstract

Using plant leaves such as banana leaves, glyricidia leaves, and rice straw for ripening resulted in lower ripening stage score than control or using chemical such as ethrel, although statistically they are not siginificantly different. Glyricidia leaves and rice straw inhibit disease symptom representing anthracnose (Colletotrichum musae) development on Gros-Michel banana.
Ketahanan Beberapa Varietas Unggul Kedelai terhadap Nematoda Puru Akar (Meloidogyne incognita) Wayan Sukanaya
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.10019

Abstract

The aims of this experiment are to find the varieties of soybean which are resistant against root-knot nematode (M. incognita) and to determine its attractancy toward the roots of resistant and susceptible soybean varieties. The experiment was divided into two parts, both parts using Completely Randomized Design. The first part was designed to determine the resistance and the second one to determine attractancy. The experiments were conducted in a green house and Plant Pest and Disease Laboratory, Faculty of Agriculture, Udayana University for 5 months. Of the 23 varieties of soybean tested against M. incognita showed that two varieties (Petek and Rinjani) were moderately resistant, 11 varieties were moderately susceptible and 10 varieties were found to be susceptible. However, none of variety was resistant. While on attractancy of root test of moderately resistant and susceptible variety it was found that M. incognita was more attracted to root of susceptible variety (Ringgit) than to moderately resistant variety (Petek).
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

Abstract

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. 
Toksisitas Abu Terbang Kayu terhadap Nilaparvata lugens dan Kompleks Predatornya Fransiscus Xaverius Wagiman; Hafiz Fauzana; Kartika Yoga Prasetyani
Jurnal Perlindungan Tanaman Indonesia Vol 17, No 1 (2011)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (125.336 KB) | DOI: 10.22146/jpti.9762

Abstract

The brown planthopper (Nilaparvata lugens) is currently a very noxious pest insect and it threatened the self sufficience of rice in Indonesia. Innovation of control technology is urgently needed to be developed. Objective of the study was to determine mortality-effect of the wood fly-ash obtained from pulp factory in Riau against N. lugens and its predator complex. A bioassay of the wood fly-ash was done in the laboratory to determine its activity against the test insects. A randomized complete block design (RCBD) experiment with three treatments —fly-ash 40 kg/ha, botanical insecticide containing of root extract of Derris eliptica, and control— with five replications was conducted at a paddy field in Sleman District Yogyakarta. Results showed that the wood fly-ash was toxic against N. lugens: LD50 at 72 hours after treatment were 4.84 and 43.26 g/m2, respectively. As compared with control and botanical insecticide of D. eliptica, the wood fly-ash was significantly more effective for controlling the N. lugens but relatively safe against predator complex. Dusting of the wood fly-ash at rate of 40 kg/ha effectively reduced population of N. lugens within 2 days but did not significantly reduce population of the predator complex namely spiders (Lycosa sp., Oxyopes sp., Callitrichia sp., Argiope sp., and Tetragnatha sp.), Coccinellidae (Menochilus sexmaculatus and Verania sp.), Cicindelidae (Ophionea sp.), and Staphylinidae (Paederus fuscipes). 
Kajian Keanekaragaman Artropoda pada Lahan Padi Sawah Tanpa Pestisida dan Manfaatnya dalam Pengendalian Hama Terpadu Eddy Mahrub
Jurnal Perlindungan Tanaman Indonesia Vol 5, No 1 (1999)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.9963

Abstract

The objectives of the research are to study the diversity and abundance of arthropods, and to study the foodweb chain composition in the ricefield ecosystem without application of chemical pesticide. This research has been done in the ricefield at Klaten district, with IR64 rice cultivar. The observation was started when the plant was 7 days old after transplanting, with an interval of 8 days until one week before harvesting, to collect the arthropods samples. Three plots and 50 hills per plot were sampled weekly. Arthropods from each hill were collected by using insect sucking apparatus. The data was analyzed following Cheng method to study the arthropod index diversity and its abundance. The results showed that in the rice ecosystem there were four groups o arthropod consisted of pest (21.19%); predator (26.09%); parasitoid (0.42%), and neutral insect (52.30%). Data of the pest population was very low in free from chemical pesticide application, plot while population of neutral insect was very high. The high population of neutral insect was very useful and functionary as alternate prey for predator and parasitoid when the pest population was very low. The diversity index (H’) of arthropods during the rice growing period in the first to the fourth week increased from 1.38 to 2.37, but during the fifth to the eleventh week the diversity was about constantly low. The diversity index decreased linearly with the rice growth stage, but as the plant got older the population of arthropods decreased because the habitat became unfavourable. It might cause the diversity index and the abundance decreased. Some of the arthropods moved to new area to find the most suitable habitat. There was a foodweb chain in the rice ecosystem consisted of arthropods complex including the natural enemies and which were neutral insects. It indicated a good balanced condition between pest and natural enemies more profitable when no chemical pesticide intervention was applied in the ecosystem.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7131.319 KB) | DOI: 10.22146/jpti.9377

Abstract

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.
Sifat-Sifat Biokimiawi dan Fabrikasi Ganoderma Jamur Patogen Pohonan Agus Susanto
Jurnal Perlindungan Tanaman Indonesia Vol 4, No 2 (1998)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.9904

Abstract

Besides as a cause of tree disease, Ganoderma is also a medicine for human health. Ganoderma used as medicine is Ganoderma lucidum. This fungus contains polysaccharides, terpenoid, ganoderic acid, germanium, protein, adenosine, and fiber. All of these materials have the following properties: antitumor activities, increase of oxygen in brain, balance of bioelectric function, decrease of cholesterol and glucose concentration in blood, detoxification of poison, etc. because of that, Ganoderma is used to cure diabetes, stroke, hypertension, and it is used as a tonic to promote good health in old age.
Pengaruh Bionematisida Berbahan Aktif Jamur Paecilomyces lilacinus Strain 251 terhadap Serangan Pratylenchus coffeae pada Kopi Robusta Soekadar Wiryadiputra
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.10102

Abstract

Experiment on the effect of P. lilacinus on the infestation of P. coffeae on robusta coffee was conducted in Sumber Asin Experimental Garden, Malang. The treatments were dosages of bionematicide i.e. : 0 (control), 0.25, 0.50, 1.00, 2.00, and 4.00 g; carbofuran (3 % active ingredient) 50 g/plant and organic soil treatment (OST) at 100 g/plant. Each treatment was replicated four times, and each replication consists of five coffee trees. The results in second year observation revealed that the population of P. coffeae in the roots on PL 251 treatments was not significantly different compared to the control, whereas in soil samples the population of both P. coffeae and Rotylenchulus reniformis inclined to be lower than the control, although they were not statistically significant. The lowest infestation was observed on PL 251 treatment at a dosage level of 4.00 g/tree. On nematode infestation, no significant difference on treatments of carbofuran and OST compared to the control. The yield of green coffee (market coffee) was the highest on the treatment of PL 251 at a dosage of 4.00 g/tree and significantly higher than the control and carbofuran treatments, with increasing levels of 225.3 and 198.9%, respectively.
Kloning Gen cry dari Bacillus turingiensis var. kurstaki Nur Rahmi Ardiani; Sismindari Sismindari; Sudjadi Sudjadi
Jurnal Perlindungan Tanaman Indonesia Vol 4, No 2 (1998)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (9057.993 KB) | DOI: 10.22146/jpti.9918

Abstract

Bacillus thuringiensis is an entomopathogenic organism. The pathogenic effect is caused by crystalline protein, δ-endotoxin, which is encoded by the cry gene. The aim of this study was to clone the cry gene from B. thuringiensis var. kurstaki with a genomic library approach. HindIII digested B. thuringiensis total DNA was ligated to HindIII digested of pUC19, and then used to transform Escherichia coli DH5α. Selection of transformans carrying recombinant was done by α-complementation and a recombinant clone containing the cry gene was further screened by non-radioactive hybridization method using a probe synthesized from the conserved region of the published cry genes. The result suggested that two recombinant clones with the insert size of 3.4 kb and 2.0 kb, respectively, carrying the cry gene.
Insecticidal Activity of Extracts of Aglaia spp. (Meliaceae) against Cabbage Cluster Caterpillar Crocidolomia binotalis Zeller (Lepidoptera: Pyralidae) Djoko Prijono; Partomuan Simanjuntak; Bambang W. Nugroho; Sudarmo Sudarmo; Shinta Puspitasari
Jurnal Perlindungan Tanaman Indonesia Vol 7, No 2 (2001)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.10069

Abstract

Insecticidal potential of eleven species of Aglaia (Meliaceae) was evaluated in the laboratory against the cabbage cluster caterpillar, Crocidolomia binotalis. The feeding treatment of second-instar larvae C. binotalis for 48 hours with ethanol twig extract of A. odorata at 0.5% caused 98.7% larval mortality; leaf and twig extracts of A. elaeagnoidea caused 17.3% and 6.7% mortality, respectively; twig extracts of A. argentea, A. formosana, and A. latifolia caused only 1.3% mortality each; whereas extracts of the other six Aglaia species were inactive (0% mortality). Further tests with A. odorata showed that twigs gave the most active extract compared to other plant parts (leaves, flowers, and roots), and air-drying of plant materials for 2 weeks markedly decreased the activity of the derived extracts. The active extracts also delayed the development of surviving larvae in similar degree to the level of their lethal effect. LC50 of ethyl acetate fraction of A. odorata twig extract and its main active compound, rocaglamide, against C. binotalis larvae were 310.2 and 31.4 ppm, respectively. This active compound was about 8.7 times less potent than azadirachtin (LC50 3.6 ppm).

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