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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean journal of applied entomology
Journal Basic Information
Journal DOI :
Korean Society of Applied Entomology
Editor in Chief :
Volume & Issues
Volume 19, Issue 4 - Dec 1980
Volume 19, Issue 3 - Sep 1980
Volume 19, Issue 2 - Jun 1980
Volume 19, Issue 1 - Mar 1980
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Studies on the Bionomics of the Oriental Corn Borer Ostrinia furnacalis
Lee Y. B. ; Hwang C. Y. ; Choi K.M. ; Shim J. Y. ;
Korean journal of applied entomology, volume 19, issue 4, 1980, Pages 187~192
This study was carried out to investigate the bionomics of Ostrinia furnacalis
in the laboratory and field in 1978. The oriental corn borer had three generations a year in Korea ana the first period of moth activity was mostly from early June to early July, the second from mid July to mid August and the third from mid August to early September. It overwintered with larval stage in the corn stubbles. The egg period was 3-4 days. The larva molted 5-6 times and its period was 18-30 days. The longevity of adult was 7-11 days and deposited about 600-800 eggs. An egg parasite and two larval parasites were investigated.
A virus disease of sesame (Sesamum idicum L.) caused by watermelon mosaic virus (WMV)
Chang M.U. ; Lee C.U. ;
Korean journal of applied entomology, volume 19, issue 4, 1980, Pages 193~198
This paper deals with the studies on the occurence of a new virus disease of sesame and the identification of the causal virus. The virus disease of sesame has been regarded as a widespread disease in the sesame-growing areas in the southern part of Korea. The disease was found to be caused by watermelon mosaic virus (WMV). During the years since 1978, stunting of sesame plants, with yellow mosaic, necrotic spot, and malformation, were collected from 17 different places. Virus isolates from 27 out of 32 samples were identified as WMV. Natural infection of squash, pumpkin, cucumber, and watermelon by WMV as well as sesame was proved. The virus is inactivated at temperatures of 55 to
, at dilution of
, and in the aging of 10 to 14 days at about
. Sesame, Chenopodium amaranticelor, pea, bean, as well as many plants of the Cucurbitaceae, are susceptible to the sesame-isolates of WMV. In negatively stained preparations, particles of the virus appear under the electron microscope as flexible filaments of about
in length. Cylindrical inclusions and virus particles were found in the cytoplasm of mesophyll cells by ultra-thin sections of WMV infected tissues.
Effect of Nitrogen Fertilizer Level and Planting Density on the Occurrence of Bacterial Leaf Blight of Rice
Choi Y. C. ; Yun M. S. ; Uhm K. B. ;
Korean journal of applied entomology, volume 19, issue 4, 1980, Pages 199~202
In order to investigate the relationship among the occurrence of bacterial leaf blight, amount of nitrogen application and planting density, a field experiment was carried out with factorial combinations of N levels (7.5, 15, 30kg/10a) and planting densities (10\times20,\;15\times30,\;20\times40cm). The results obtained in this study were; (1) The incidence of bacterial leaf blight was increased with increase of nitrogen application; (2) In double amount of nitrogen application (30kg/10a), the incidence of bacterial leaf blight was higher, regardless of planting density; (3) The incidence of bacterial leaf blight in Standard nitrogen application was significantly higher
Epidemiological Studies of Blast Disease of Rice Plaint 1. Infection of Panicle Blast in Leaf Sheaths during Booting Stage
Park J.S. ; Yu S.H. ; Kim H.G. ;
Korean journal of applied entomology, volume 19, issue 4, 1980, Pages 203~211
The pattern of blast disease incidence of Tonsil-line rice varieties derived from the cross between Indica and Japonica type was quite different from that of Japonica-type rice varieties. The former showed discontinuity between the incidence of leaf blast and panicle blast; the incidence .of leaf blast was slight, while that of panicle blast was very severe. Different level of nitrogen fertilizer applied influenced significantly the incidence of leaf blast but influenced slightly the incidence of panicle blast of Tongil-line rice varieties. The infection percentage of panicle blast of Tongil-line rice varieties was about
and most of them were infected in leaf sheaths during booting stage, but infection of panicle blast of Japonica-type rice varieties in leaf sheaths during booting stage was very low, only about
. Infection route of panicle blast in leaf sheaths during booting stage, microflora in leaf sheaths, and specific susceptibility of young panicle to blast disease were investigated in the epidemiological point of view.
A Study on the Establishment of Standard Amount of Pesticide in Applying the Sea Water Dipping Disinfection Method for the Imported Soft Woods. -Estimation of the Required Amount of Pesticide on the Area of Lumber over the Sea Level-
Hah J.K. ; Kim B.H. ; Shin I.K. ; Kim J.H. ;
Korean journal of applied entomology, volume 19, issue 4, 1980, Pages 212~220
The purpose of this study is to establish a standard amount of pesticide per unit area of the lumber over the sea level. This establishment is required in applying the sea water dipping disinfection method to the imported soft woods to control the pests living on the surface of the lumber. The major findings of this study are as follows; 1. The average length and diameter of the imported soft wood was respectively 11.12m and 76.46Cm. 2. The average cubic content of the lumber over the sea level to the whole cubic content was 20.82 percent. 3. The ratio of the lumber over the sea level to the whole cubic content was 2.3356 at the
significance level. 4. The sampling error of the ratio of the area of the lumber over the sea level to the cubic content was lower in the case of the pieces of lumber in a vessel than the average between ten tressels. 5. The optimum amount of pesticide spray per
of the soft wood was 0.298 cc in the case of using the hand spray, but 0.245 cc the motor spray. 6. For example, in the case of applying the sea water dipping disinfection method to the 5,000
of the imported soft wood, the required amount of pesticide with a motor spray can be estimated as follow.
The Occurrence of Strawberry Black Leaf Spot Caused by Alternaria alternate (Fr.) Keissler in Korea
Cho J.T. ; Moon B.J. ;
Korean journal of applied entomology, volume 19, issue 4, 1980, Pages 221~227
A new disease of strawberry caused by Alternaria was found in Gim Hae, Gyougnam province, in July 1979. The symptoms of the disease occurred mainly on leaves as showing dark brown spots with circular to irregular,
in diameter. The pathogen was identified as Alternaria alternate (Fr.) Keissler which has not been described in Korea as a pathogen of strawberry disease. The common name of the disease was given as Gum un mum byung of strawberry. The conidia shape and size of this fungus varied considerably with culture media. The measurements of conidia and beak on corn meal agar were
, respectively, which were shorter than those on strawberry leaf lesions in the field. Among 49 strawberry varieties tested, Morioca 16 and Robinson were highly susceptible to the disease by artificial inoculation and Catskill, Cyclone, Northwest, Merton princess, Juspa and Daehak I were moderately susceptible whereas 31 varieties were resistant. This fungus could also infect the leaf of Common garden sunflower, Double sunflower and Mexican sunflower among the 14 plants species tested.
The Outbreak and Propagule formation of black root rot caused by Calonectria crotalariae in Korea
Sung J.M. ; Park J.H. ; Lee S.C. ; Chung B.K. ;
Korean journal of applied entomology, volume 19, issue 4, 1980, Pages 228~233
The infection rate of soybean black root rot disease caused by Calonectria crotalariae was about
. The isolated fungi from the infected soybean roots and stems were Calonectria crotalariae, Fusarium solani, F. roseum, Phomopsis sojae, Pythium aphanidermatum, Rhizoctonia solani and Macrophomina sp. Among them, C. crotalariae was the most virulent pathogen under the laboratory conditions. Mycelial growth and microsclerotial formation were good on PSA containing 1000cc of water, 100g of potato and 20g of sugar. Mycelial growth, sporulation and microsclerotial formation were good on sterilized root. Perithecial formation was better in the dark condition than in the light. Survival of macroconidia was not available between
soil water content. Microsclerotia and mycelium in infected plant debris were survived for 4 months at to
soil water content. The plant height, when inoculated with
inoculum density, reached approximately half of uninoculated plants. Disease severity was much higher at nonsterilized soil than completely sterilized soil. It was determined that the host range of this pathogen includes soybean, peanut, green bean and red bean.
Effect of of Predisposing Temperatures on The Histopathology of The Rice Blast Fungus, pyricularia oryzae ill. Relationship Between Hyphal Growth in The Sheath and Percent Penetration in The Leaf Epidermis
KIM Chang Kyu ; CRILL PAT ;
Korean journal of applied entomology, volume 19, issue 4, 1980, Pages 234~238
The relationships between the mean degree of hyphal growth in the leaf sheath and percent penetration in the leaf epidermis within the same predisposing temperature regime were highly significant. A positive relationship was found between degree of hyphal growth in the leaf sheath and Percent Penetration in the leaf epidermis.
A new disease, powdery mildew, caused by Oidiopsis taurica on Capsium spp.
Cha Jae Soon ; Ki Un Kye ; Cho Back Ho ; Kim Ki Chung ;
Korean journal of applied entomology, volume 19, issue 4, 1980, Pages 240~242
Recently, a powdery mildew on the leaves of Capsium spp., Pimento and pepper, occurred greatly in the vinyl-house at Seungchon area, Chonnam province. According to the field survey, the disease is severe at high temperature and high humidity conditions in the vinyl house. Diseased loaves were severely fallen and remained only several top leaves, thus the setting and thickening of fruits were greatly depressed. The pathogenic fungus was identified as Oidiopsis taurica(Lev.) Arn., imperfect stage of Leveillula taurica (Lev.) Arn., The perfect stage of fungus was not observed. Optimum temperatures for conidial germination ranged at
with high humidity.
Studies on Bionomics and Control of Cutworms
Kim H.S. ; Kim S.H. ; Choi K.M. ;
Korean journal of applied entomology, volume 19, issue 4, 1980, Pages 243~248
Experiments were conducted to study on bionomics and control of cutworms; Agrotis tokionis, A. ipsilon, A. fucosa in Suweon, 1978-1979. A. ipsilon and A. fucosa had two or three generations and A. tokionis had one generation a year. A large number of A. toikonis occured at the end of September, and the major peaks of the first generation of A. tokionis and A. fucosa were in mid-June, the second generation in mid-August, and the third generation was at the end of September. These cutworms laid many eggs on the lower surface of curved downward leaf of Chinese cabbage and the larvae later than 3rd instar began to cut the basal part of stem and then pulled into the soil. A parasite of A. tokionis, a braconid wasp, Meteorus rubens, and two unidentified Ichneumnid wasps were found. Mocap and Volaton gave effective control to the cutworms but Volaton should be applied not to contact with plant.
Tentative Catalogue of the Oribatid Mites (Cryptostigmata: Acari) of Korea
Paik Woon-Hah ;
Korean journal of applied entomology, volume 19, issue 4, 1980, Pages 250~256