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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 22, Issue 4 - Dec 1983
Volume 22, Issue 3 - Sep 1983
Volume 22, Issue 2 - Jun 1983
Volume 22, Issue 1 - Mar 1983
Selecting the target year
A Survey on the Occurrence of Barley Stripe Disease in Yoengnam Area
Lee Do-Hee ; Jung Yeun-Tae ; Suh Deuk-Yong ; Jin Young-Dae ; Park Rae-Kyung ;
Korean journal of applied entomology, volume 22, issue 1, 1983, Pages 1~6
The survey on the occurrence and distribution of barley stripe disease was conducted in the farmer's field of 19 gun (county) throughout Yeongmm area in May of 1982, in order to obtain a basic information on the breeding of resistant varieties, and for control of the disease. The percent of infected culms of barley stripe disease in Gyeongnam province (Southern Yeongnam) was higher
them in Gyeong-bug
, northern Yeongnam, and especially, Ham-an, Milyang, Eui-chang and Weol-seong were severly occurred. The cultivar of Millyang 6 was slightly infected while the cultivars Olbori and Oweolbori were severely infected by the disease. Among soil conditions, the barley plant grown in the loam, clay and clay loam texture which have more availble moisture, and that of the plant cultivated in the poorly drained soils were shown to have severe infection. The barley plant grown in the soils in local valley
where is frequently over saturated with water showed the more infection the barley plant grown in plains
. Generally, the poorer the soil drainage the more severeinfection occurred. Among cultivation conditions, the earlier the sowing dates of the barley, the less the percent of infected culms was observed. The heavier or lighter application of N fertilizer than the optimum to barley plant seemed to cause more infection.
Assessment of the Soybean Yield Reduction due to Infection of Septoria Brown Spot, Septoria glycines Hemmi
Oh Jeung Haing ; Kwon Shin Han ;
Korean journal of applied entomology, volume 22, issue 1, 1983, Pages 7~14
Septoria brown spot closed by Septoria glycines is one of the most serious fungal diseases in soybean. Average yield reduction of 3 varieties for two years was
by the septoria brown spot inoculation and
by the natural infection as compared to fungicide-sprayed plots. Number of pods per plant and seed weight were significantly reduced while plant height, number of branches and number of nodes per plant were not affected. Yield reduction was positively correlated to the septoria brown spot severity in all varieties examined. Correlation coefficient
between yield reduction and area under the disease progress curve was higher than that (r=0.156) between yield reduction and Van der Plank's apparent infection rate. Potential effect of the septoria brown spot on the soybean yield reduction estimated with the area under the disease progress curve was expressed by the equation of Y=4.38+0.05X
Effects of Root-knot Nematode, Meliodogyne hapla, on Growth and Yield of Pepper and Tomato
Cho H.J. ; Han S.C. ;
Korean journal of applied entomology, volume 22, issue 1, 1983, Pages 15~20
Effects of the root-knot nematode, Meloidogyne hapla, on the growth and yields of hot-pepper (var.: Cheongyong gochu) and tomato
were studied with inoculating 500, 2,500, 5,000, 7,500, 10,000 and 20,000 nematodes per plant in pots. Results were analyzed with comparing weight of fruits harvested throughout the season from both hot-pepper and tomato, and with mineral contents in dried stoots and roots of pepper plant 20 weeks after the inoculation. No significant difference was found on the plant growth at all levels of inoculation until the 8th week after the inoculation. However, the plant growth was significantly depressed from the 12th week in the pots inoculated with over 10,000 nematodes, and the yields were reduced by
in hot-pepper and
in tomato respectively when 10,000 nematodes were inoculated.
Ecological Studies on Rice Sheath Blight Caused by Rhizoctonia solani II. Forecasting and Control of Rice Sheath Blight
Kim Chang Kyu ; Min Hong Sik ;
Korean journal of applied entomology, volume 22, issue 1, 1983, Pages 21~25
To develop forecasting methods of rice sheath blight caused by Rhizoctonia solani, two rice cultivars Jinheung (Japonica type) and Yushin (Tongil type) were used from 1976 to 1981. Severity of rice sheath blight disease at maturing stage was estimated by top lesion height, percentage of top lesion height vs. plant height in July and lesion index on September 11. The relationship between top lesion height on July 11 and degree of damage at maturing stage for a cultivar Yushin was represented by the equation of Y=4.64x-13.2, and
, where Y is degree of damage by shea4h blight at maturing stage and x is top lesion height on July 11. Considering the percentage of infected hills/stems was rapidly increased from July 11 to August 1, the most effective period and time for fungicide spray were considered July 15 and July 25 or July 25 and August 5.
Immunochemical Detection of Soybean Mosaic Virus Infections in the Seeds of Soybean Cultivars in Korea
La Yong-Joon ; Bak Won-Chull ; Oh Jeung-Haing ;
Korean journal of applied entomology, volume 22, issue 1, 1983, Pages 26~30
Soybean mosaic virus (SMV) infection in seeds wits investigated by an immunochemical method Seven soybean cultivars or lines Bughae No.1, KAS 662-7, Chungbugbaeg, Gwanggyo Clark, Bongeui, and Gangrim were tested using hypocotyls of germinated seeds and presence of SMV was detected in six soybean cultivars but Gangrim. The level of SMV infection in the assayed cultivars varied from 2.1 to
. It seemed that seed coat mottling had no correlation with seeds. SMV infection of the seeds since virus has not always been detected from the mot tled seeds SMV has not been detected in the seeds of variety Gwanggyo which showed necrotic symptoms.
Classification of the Bostrichidae Intercepted from Imported Timbers II.
Choo H.Y. ; Woo K.S. ; Lee C.K. ;
Korean journal of applied entomology, volume 22, issue 1, 1983, Pages 30~34
Authors identified following seven species of six genera of Dinoderinae and Bostrichinae of Bostrichidae intercepted from imported logs. Keys and descriptions are given for the seven species. The distribution of each species is outlined Dinoderinae: Rizopertha dominica (Fabricius) Dinoderus minutus (Fabricius) Bostrichinae: Sinoxylon anale Lesne S. japonicum Lesne Heterobostrychus hamatipennis (Lesne) Xylothrips flavipes (Illiger) Xylopsocus castanopterus (Fairmair).
Classification of the Scolytidae and Platypodidae Intercepted from Imported Timbers III
Choo H.Y. ; Woo K.S. ;
Korean journal of applied entomology, volume 22, issue 1, 1983, Pages 34~41
The twelve species of Scolytidae and six species of Platypodidae were recognized from imported logs at Incheon, Gunsan and Busan ports. One species, Hypothenemus hampei (Ferrari) of Scolytidae was identified from coffee bean. These species were not reported before from imported logs and seeds. Scolytidae Platypodidae Scolytus frontalis Blandford Crossotarsus nitens Chapuis Hylurgopsl gabratus Zetterstedt P. lepidus Chapuis Gnathotricus sulcatus (Leconte) Diapus quinquespinatus Chapuis Hypothenemus hampei (Ferrari) Genyocerus abdominalis Schedi Ips concinuus (Mannerheim) G. compactus Schedl Poecilips subcribrosus (Blandford) G. sexporus (Schedl) xyleborus agnatus Eggers X. cognatus Blandford X. emarginatus Eichnoff X. mascarensis Eichhoff X. pseudomajor Schedl X. pseudopilifer Schedl.
Feasibility on Differentiation of Resistance of Rice Varieties to Whitebacked Planthopper (Sogatella furcifera) using Radioisotope
Chung K.H. ; Choi S.Y. ;
Korean journal of applied entomology, volume 22, issue 1, 1983, Pages 41~44
In order to evaluate the technique of P-32 labelling method for screening lines of rice to whitebacked planthopper, the relationship between the amount of ingestion and feeding preference of insects were observed with the resistant and susceptible lines where characteristics were predetermined by comparing their feeding preference and antibiosis method. The feeding preference of the insects was significantly correlated with the amount of P-32 ingestion. It was more manifest in adults than nymphs of the whitebacked planthopper. The density of nymph and radioactivity of P-32 were high in the susceptible line. This suggested that deforming the ingestion amount of P-32 in the insects seemed to be useful technique for accurate screening. For this technique, the uniform labelling of P-32 on the rice seedings was prerequisite and the uniformity was increased by triming roots and leaves in the length and number.
Characterizing Distribution the Head Width in a Holometabolous Insect Larvae
Ryoo Mun Il ;
Korean journal of applied entomology, volume 22, issue 1, 1983, Pages 45~47
The d/w ratio, initially proposed for measuring resource utilization of an organism, was introduced for an objective description of the larval head width distribution in a holometabolous insect. The statistical method was successfully applicated in the case of Sitophilus oryzae, and, therefore, could be also used for characterizing the larval head width distribution of other insects.