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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 9 Documents
 1 
Search results for , issue "Vol 3, No 2 (1997)" : 9 Documents clear
Pengaruh Iklim terhadap Perkembangan Penyakit Layu Fusarium pada Cabai di Beberapa Topoklimat di Yogyakarta Rachmad Gunadi
Jurnal Perlindungan Tanaman Indonesia Vol 3, No 2 (1997)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (8930.713 KB) | DOI: 10.22146/jpti.12964

Abstract

The widespread of chilli cultivation and its serious damage caused by Fusarium wilt was observed to study the weather characters of 3 topoclimates in Yogyakarta and their support on the disease development. The result of the study shows that the altitude gradient gives specific effect to weather conditions and this condition shows the specific effect on disease development. The macro elements of weather tends to be more significantly different between topoclimates than the micro ones. The optimal altitude for disease development is around 400 m. Relative humidity and rainfall show the dominant effect on disease development beside of air and soil temperatures. The range of weather condition needed by F. oxysporum for survival tends to be much wider than the range needed for disease development.
Ketahanan Ubi Jalar terhadap Penyakit Kudis Eko Agus Martanto; Haryono Semangun; Christanti Sumardiyono
Jurnal Perlindungan Tanaman Indonesia Vol 3, No 2 (1997)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6238.02 KB) | DOI: 10.22146/jpti.12959

Abstract

The experiment was conducted to know the resistance of sweet potato cultivars to scab caused by Elsinoe batatas, the incubation period, and the influence of stomatal density to the resistance of the host. The test showed that Malothok, Mlg 12538, and Prambanan cultivars were moderately resistant, while Ciceh-5 was resistant. The incubation period on Ciceh-5 was longer than that on the other moderately resistant cultivars. On resistant cultivar, stomatal density was lower than that on moderately resistant cultivars.
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 Residu Karbofuran terhadap Penyakit Hawar Upih Daun Rhizoctonia solani pada Padi Christanti Sumardiyono
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.12960

Abstract

The purpose of this study was to know the side effect of carbofuran on sheath blight disease on rice caused by Rhizoctonia solani. The results showed that carbofuran residue which was maybe its metabolite decrease disease intensity of sheath blight. The carbofuran residue was detected on rice stem two months after treatment at the dose of 8.5, 17.0, and 34.0 kg/ha, while in the soil treated at 34.0 kg/ha it was not detected.
Pengaruh Pemanfaatan Feromon Seks terhadap Serangga Hama Edhi Martono
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.12966

Abstract

Pheromones are chemical substances used by insects to communicate within their species. Our understanding about pheromones' chemistry, their functions and their overall performances over insect behavior provide us with wealth of information that lead to their use for insect pest control. The use of insect pheromones, particularly sex attractants, is quite advanced, but little information is available about Indonesian indigenous harmful insects' pheromones. More research and investigations need to be done to obtain target-specific substances rather than simply utilize imported products. Their implementation into Integrated Pest Management using farmers-oriented technology should be considered.
Dinamika Populasi Pseudomonas solanacearum pada Rizosfer Tanaman Bukan Inang Triwidodo Arwiyanto; Elizabeth Handini; Toekidjo Martoredjo
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.12962

Abstract

Bacterial wilt caused by Pseudomonas solanacearum is a main limiting factor in the production of tobacco. The objective of this study is to investigate the survival of P. solanacearum in the rhizosphere of presumed nonhost plants. The results indicated that in the sugarcane rhizosphere, the pathogen population decreased along with the time course. The bacteria could not infect the root of sugarcane. On the other hand, the pathogen could infect the root of Mimosa invisa, although the population also decreased along with the time course.
Life Cycle of Pink Fungus (Upasia salmonicolor) in Java Ambarwati-Harsojo Tjokrosoedarmo
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.12956

Abstract

In the complete life cycle of pink fungus, in this study five stages were recognized as follows: stage I (cobweb stage), stage II (pseudonodular stage), stage III (teleomorph), stage IV (nodular stage), and stage V (anamorph). The five stages are arranged into a sexual cycle (I, II, and III) on shady side of a branch, and asexual cycle (I, IV, and V) on exposed side of a branch. Most of the pink fungus on the 23 plant species found in this study formed only two or three stages of the sexual cycle. Only on apple, lime, calliandra, cinchona, coffee, oleander, crotalaria, and tephrosia, may the fungus form the complete five stages.
Pengaruh Beberapa Jenis Ekstrak Tanaman sebagai Moluskisida Nabati terhadap Keong Mas (Pomacea canaliculata) Agus Kardinan; Momo Iskandar
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.12963

Abstract

Research has been carried out at the Pest and Disease Laboratory, Research Institute for Spices and Medicinal Crops, Bogar, in the 1997. Research consisted of three parts, those were; (I) The toxicity of Dens elliptica, Blumea balsamifera, and methaldehyde, by determining the LC50 values, (2) Effect of the leaves of B.balsamifera, Euphorbia tirucalli and Tephrosia vogelii, (3) Effect of the most poisonous plant as ovicides. Result showed that D.elliptica was the most poisonous material to golden snail with its LC50 value was 400ppm, but it was still under the toxicity value of methaldehyde (11. 78 ppm). There was no significant difference among B.balsamifera, T.vogelii and E. canaliculata, but extract of B.balsarnifera tended to be better material among those plant extracts tested. The extract of D.elliptica did not affect egg hatching of golden snail.
Periodisitas Harian Kehadiran Walang Sangit (Leptocorisa oratorius F.) pada Kepiting yang Membusuk Solikhin Solikhin; Edhi Martono
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.12957

Abstract

To know daily periodicity attendance of rice bug (Leptocorisa oratorius F.) in response to sixth-day-decaying crab, an experiment was conducted in four consecutive days in May 1997 in Gamping, Special Territory of Yogyakarta. The experiment consisted of 17 treatments and 3 replications arranged in randomized completely block design. Seventeen hourly observations (treatments) were made on rice bugs attendance on the decaying crab by direct counting as well as the relative humidity and temperature from 5 am to 9 pm. The result of the experiment showed that the peaks of rice bug attendance were from 10 am to 6 pm, while the highest one was at 5 pm (20 rice bugs).

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