cover
Article Per Year (5 Year)
All
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
Jurnal Perlindungan Tanaman Indonesia
Published by Universitas Gadjah Mada
ISSN : 14101637     EISSN : 25484788     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Arjuna Subject : -
Articles 10 Documents
 1 
Search results for , issue "Vol 2, No 2 (1996)" : 10 Documents clear
Development and Maturation of the Pink Fungus (Upasia salmonicolor) Stages in Java Ambarwati-Harsojo Tjokrosoedarmo
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 2 (1996)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12889

Abstract

The development of the pink fungus stages showed that among the five stages, cobweb stage is the most important, since this stage may form the other four stages. I. Cobweb stage, develops following the germination of either basidiospores or conidia both on exposed and shaded side of branches. II. Pseudonodular stage, develops from symphogenous aggregation of cobweb stage mycelia on the surface of lenticel or cracks on shaded bark. III. Teleomorph, develops in two ways: a. Teleomorph incrustation develops from cobweb stage mycelia through four layers: basal layer, intermediate layer, subhymenial layer, and hymenial layer; b. Teleomorph pustule, develops from pseudonodular stage, through four layers, mirror to teleomorph incrustation. IV. Nodular stage, develops from meristogenous aggregation of cobweb stage mycelia on exposed bark. V. Anamorph, develops in two ways: a. From nodular stage; b. From cobweb stage mycelia on exposed bark.
The Biological Activity of Kumchura Rhizome to Melon Fly: I. Crude Kumchura Bioactivity Edhi Martono
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 2 (1996)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12884

Abstract

Kumchura (Kaempferia galanga, L.) rhizome, a herbal medicine and condiment used in many Asian countries, was known to possess licicidal quality. To ensure whether this quality extend to other insects, kumchura rhizome preparation was applied to eggs, larvae and adults of the melon fly, Bactrocera cucurbitae, Coquillet. Crude preparation of the rhizome was mixed with larval diet which was also served as a common artificial egg-hatching medium. The preparation proved to be ovicidal at minimum concentration ratio of 1 :4, kumchura:larval diet. No such larvicidal effects were seen at the same ratio, the effects observed were larval development inhibition and delay. In the repellency tests, proportionally less melon flies were found on diet containing kumchura, but no effect on oviposition was observed.
Deteksi Strain Pseudomonas solanacearum Penghasil Bakteriosin Triwidodo Arwiyanto; Sudarmadi Sudarmadi; I. Hartana
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 2 (1996)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12890

Abstract

The capability of Pseudornonas solanacearum to produce bacteriocin was investigated with theuse oj Casamino-acid Peptone Glucose Agar. All strains tested produce bacteriocm withvarious spectra. Strain 6, 36 and ./9 inhibited almost all of the other strains. The avirulenttype of those three strains. i.e. 6-op. 36-op and -19-op, still produced bacteriocln on the samemedium. The.concentratlon of carbon source and acidity of the medium did not have any effecton the bacteriocin production. The bacterioctn produced by strains 6-op, 36-op and 49-opwere inactivated at 70°C for 30 minutes.
Uji Patogenisitas Bakteri Pasteuria penetrans terhadap Nematoda Puru Akar (Meloidogyne spp.) Mulyadi Mulyadi; B. Triman; Bambang R. T. P.
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 2 (1996)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12885

Abstract

The objective of the research was to study the effectiveness of P. penetrans for controlling root-knot nematodes (Meloidogyne spp.) in micro plot and in the field. The pathogenicity study in micro plot was done in Banguntapan, and field experiment was done in Ngipiksari, Pakem, Steman, Yogyakarta. The plots were arranged in Randomized Completely Block Design with three replications. The treatments used in the research were: isolat no. 2 and 3 of P. penetrans; carbofuran nematicide. and control. The results in micro plot test were: 1) root damage caused by root-knot nematodes in plot treated with P. penetrans lower than the control, and 2) percentages of parasitism of P. penetrans were 63.57 % (in isolate no. 2) and 53.46 % (in isolate no. 3). In field experiment the results showed: 1) P. penetrans found to be effective in reducing root damage caused by Meloidogyne spp. especially in 45 days old of tomato plant, whereas in 90 days old the effectiveness were decreased; 2) P. penetrans was able to grow and reproduction in the field: 3) the level of parasitisms of P. penetrans were increased rapidly during the experiment: and 4) the highest yield was found in tomato treated with carbofuran and followed by isolate 2, isolate 3, and control.
Pemendekan Waktu ELISA dalam Deteksi TMV Susamto Somowiyarjo; Y. B. Sumardiyono; Purwati Widiyati
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 2 (1996)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12891

Abstract

In order to support the program for the management of viral diseases on garlic, a rapid diagnosis procedure was developed by shortening the incubation period of the indirect ELISA. No significant differences of ELISA absorbance were observed when the antigen was incubated for 4 h, 2 h, and 30 min at 37ºC. The incubation period for the antibody and conjugate could he reduced from 4 h at 37ºC or 18 h at 4ºC to 30 min al 37ºC. The shortest period of incubation for the assay could be obtained when each incubation time for the antigen, antibody and conjugate was 30 min. The detection limit for the shortened ELISA was 10^-4 for the virus in crude extracts and 0,5 μg/ml for the purified preparation.
Residu Fungisida Tembaga (Cu) pada Pucuk Teh Christanti Sumardiyono
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 2 (1996)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12881

Abstract

The study was done to know copper residue on tea due to blister blight control by copper fungicides. The experiment was done at Pagilaran Tea Plantation, Batang, Pekalongan. Tea plants were sprayed 8 times, with 8 days interval at the dosages of 0. 75, 150, and 300 g/ha respectively. Shoot sample was taken at 8 and 16 days after spraying. The copper residue war analyzed by Atomic Adsorbtion Spectrophotometer at 324 nm. The result showed that the higher dosage of spraying gives higher copper residue. At the dosage of 300 g/ha was detected 23,52 ppm of copper residue at 8 days after spraying. The residue was reduced to 12,96 ppm at 16 days after spraying. At that dosage the blister blight disease intensity reduced by 59,97%. The detected residue of copper fungicides due to blister blight control is not higher than MRL ( 150 ppm).
Respon Fungsional Menochilus sexmaculatus Fabricius terhadap Aphis gossypii Glover F. X. Wagiman
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 2 (1996)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12887

Abstract

Laboratory and field-cage experiments were conducted at the Universiti Pertanian Malaysia. Objective of the study was to determine the functional response of Menochilus sexmaculatus Fabricius (Coleoptera: Coccinellidae) predating on chilli aphid Aphis gossypii Glover (Homoptera: Aphididae). The larvae and adults of the predaceous coccinellid exhibited the Hulling's Type II functional response. A first instar of the coccinellid predating on single first instar of the aphid within 24.6 minutes in the laboratory and 16.8 minutes in the field. While a fourth instar and an adult of the coccinellid predating on single fourth instar of the aphid within 4.2 and 1.5 minutes respectively.
Pertumbuhan Populasi dan Oviposisi Wereng Hijau, Nephotettix virescens Distant (Hemiptera: Cicadellidae) Berkaitan dengan Saat Padi Keluar Malai I Nyoman Widiarta
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 2 (1996)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12882

Abstract

Effects of early and late-maturing varieties of rice on the population growth of N. virescens was investigated during the wet season crop of 1994/1995, and dry season crop of 1995 in the experimental fields of Research lnstitute for Rice in Sukamandi. A pot experiment to observe oviposition rate of N. virescens on both varieties was conducted in screen house in the dry season crop of 1995. The population fluctuation of N. virescens on both varieties as well as number of eggs of the first generation at 8 weeks after transplanting were similar. The population density increased during early growth stage of rice from immigrant generation to the first generation and decreased thereafter. The peak emergence of adults of the first generation on early maturing variety occured after the flowering stage, on the otherhand on late maturing variety the peak emergence of adults occured before the flowering stage. Adult N. virescens laid more eggs on early maturing variety after flowering stage than that on late maturing variety before flowering stage (p< 0.01; t-test) in the pot experiment. Those field and pot experiment facts indicated that the first generation of adult emigrant influenced the population fluctuation in the fields, because the density of predator, Lycosa, was lower in the early maturing variety than in the late maturing variety in the wet season crop of 1994/1995 and it was similar in the dry season crop of 1995.
Numerical Response and Density-Dependent Relationship of Menochilus sexmaculatus against Aphis gossypii F. X. Wagiman
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 2 (1996)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12888

Abstract

The leaf aphid Aphis gossypii Glover is an important vector of virus disease CVMV (Chilli veinal mottle virus) on chillies. In Malaysia the disease could cause the yield loss up to 60% and the predaceous coccinellid Menochilus sexmaculatus Fabricius was observed a dominant predator in the chilli's ecosystem. The studies had revealed that the coccinellid exhibited a strong numerical response to its prey, A.gossypii. The predator population {Y in log(Y-1)) was determined strongly by the aphid population {X in log(X+ 1)}. The immediate numerical response model was Y = -0,1148 + 0.3046X with r^2 = 0.81 and P<0.001, while the 3-day delayed numerical response model was Y = -0,1076 + 0.2962X with r^2= 0.75 and P<0.001. The coccinellid showed its power to stabilise A. gossypii population as indicated by the anti-clockwise direction of cyclic form of their delayed density-dependent relationship.
Specific Effects of Carbofuran on Rice Agrosystem in Yogyakarta Plant Growth and Rice Stem Borer Populations Eddy Mahrub; A. Pollet
Jurnal Perlindungan Tanaman Indonesia Vol 2, No 2 (1996)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12883

Abstract

The effectiveness of carbofuran in controlling lowland rice stem borers in traditional farming systems was studied by looking at its impact on the whole rice agroecosystem. Levels of infestation, rice yield, damage to the plant, parasitism rates, and distribution of damage were compared after medium, high, and no (control) dosages were applied to lowland rice fields near Yogyakarta, Indonesia. Although larvae were found to be more numerous in control plots, the damage attributable to them was not significantly different. Their spatial distribution, however, differed radically. The authors concluded that carbofuran might affect pest populations at two different levels: by discouraging or preventing rice stem borers from laying their eggs on rice, and by delaying or eliminating natural enemies attacks on rice stem borers. Both levels were determined by comparing the distribution of damage in treated fields with untreated fields. In the treated fields, distributions of larvae seemed to reflect initial grouping of eggs, producing a random distribution of groups, while in the control fields larvae were found in random distribution of individuals.

Page 1 of 1 | Total Record : 10

 1 

Filter by Year

1996 1996


Reset
Filter By Issues
All Issue Vol 29, No 2 (2025): In Progress Vol 29, No 1 (2025) Vol 28, No 2 (2024) Vol 28, No 1 (2024) Vol 27, No 2 (2023) Vol 27, No 1 (2023) Vol 26, No 2 (2022) Vol 26, No 1 (2022) Vol 25, No 2 (2021) Vol 25, No 1 (2021) Vol 24, No 2 (2020) Vol 24, No 1 (2020) Vol 23, No 2 (2019) Vol 23, No 1 (2019) Vol 22, No 2 (2018) Vol 22, No 1 (2018) Vol 21, No 2 (2017) Vol 21, No 1 (2017) Vol 20, No 2 (2016) Vol 20, No 1 (2016) Vol 19, No 2 (2015) Vol 19, No 1 (2015) Vol 18, No 2 (2014) Vol 18, No 1 (2014) Vol 17, No 2 (2011) Vol 17, No 1 (2011) Vol 16, No 2 (2010) Vol 16, No 1 (2010) Vol 15, No 2 (2009) Vol 15, No 1 (2009) Vol 14, No 2 (2008) Vol 14, No 1 (2008) Vol 13, No 2 (2007) Vol 13, No 1 (2007) Vol 12, No 2 (2006) Vol 12, No 1 (2006) Vol 11, No 2 (2005) Vol 11, No 1 (2005) Vol 10, No 2 (2004) Vol 10, No 1 (2004) Vol 9, No 2 (2003) Vol 9, No 1 (2003) Vol 8, No 2 (2002) Vol 8, No 1 (2002) Vol 7, No 2 (2001) Vol 7, No 1 (2001) Vol 6, No 2 (2000) Vol 6, No 1 (2000) Vol 5, No 2 (1999) Vol 5, No 1 (1999) Vol 4, No 2 (1998) Vol 4, No 1 (1998) Vol 3, No 2 (1997) Vol 3, No 1 (1997) Vol 2, No 2 (1996) Vol 2, No 1 (1996) Vol 1, No 1 (1995) More Issue