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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 21, Issue 4 - Dec 1982
Volume 21, Issue 3 - Sep 1982
Volume 21, Issue 2 - Jun 1982
Volume 21, Issue 1 - Mar 1982
Selecting the target year
Field Spread of Soy bean Mosaic Virus Strains
Cho Eui Kyoo ; Goodman Robert M. ;
Korean journal of applied entomology, volume 21, issue 2, 1982, Pages 53~60
Isolates of soybean mosaic virus (SMV) strains classified based on virulence in silt resistant soybean cultivars caused the same reactions in soybean cultivars used as differentials as those obtained by sap inoculations to the same cultivars. Five species of aphids (Myzus persicae SULZ., Aphis craccivora KOCH, Aphis citricola VAN., Rhopalosiphum maidis FIT., End R. padi L.) were able to transmit each of SMV strains. However, R. maidis and R. padi were inefficient vectors for transmission of SMV strain G3. Spread if four SMV strains (G2, G3, G6, and G7) was monitored in the field from sapinoculated plants in a one meter row of Williams soybeans (source plants) to plants in an adjacent row of Williams 80cm away (test plants). Test plants wert downwind from the source plants. A complete block design was used. Spread of strain G6 was significantly greater than that of other three strains. Two hundred six aphids were collected from June 27, 1979 to August 2, 1979 in the same field. A. citricola was the mist prevalent, comprising
of the total aphids. Yields of Williams inoculated with each strain were also compared. Yields were the least from plants inoculated with strain G2 following G6, G3, and G7 in that order.
Studies on Varietal Resistance and Chemical Control to the Wilt of Strawberry caused by Fusarium oxysporum
Kim C.H. ; Seo H.D. ; Cho W.D. ; Kim S.B. ;
Korean journal of applied entomology, volume 21, issue 2, 1982, Pages 61~67
The strawberry cultivar Hokowase showing rapid wilting and death around harvest time was first found in the fold at Woongcheon, Chungnam province in 1974. The fungus, Fusarium oxysporum was isolated frequently from the crown, petiole and root of strawberry plants collected from Woongcheon and was pathogenic to Hokowase. The fungus abundantly produced micro-and macro-conidia and chiamydospore on PSA. The size of micro conidia, macro conidia and Chlamydospores was
, respectively. Mycelial growth of the fungus was best between
on PSA. The disease at Woongcheon occurred from the end of March and incidence of the disease increased from the beginning of May reaching
of diseased Plants at the 1st part of June. In laboratory and field evaluation tests with twelve fungicides, Difolatan, Benlate T and Tospin M showed some control effects against the disease although they did not show ignificant differences in effects compared with that of the non-treatment. The cultivar Yachiyo, Daehak 1, Line 10-2, and Senga Sengana were highly resistant, and Harunoka and Empire were moderate resistant whereas Northwest and Hokowase were highly susceptible to the fungus under field condition.
Soil Environmental Factors Affecting Fusarium Population and Root Rot of Panax ginseng in Ginseng Fields
Ohh Seung Hwan ; Chung Young Ryun ; Yu Yun Hyun ; Lee Il Ho ;
Korean journal of applied entomology, volume 21, issue 2, 1982, Pages 68~72
Soil environmental factors, affecting population of Fusarium spp. and root rot of Panax ginseng were investigated in the ginseng cultivated soil. In the 2-year-old ginseng cultivated soil, the number of Fusarium spp. and the amount of available phosphorus were significantly decreased as clay content was increased in the soil. Also the missing rate of ginseng plants and the amount of nitrate nitrogen appears to be decreased as clay content was increased in the soil, although, it was not statistically significant. In the 6-year-old ginseng cultivated soil, there was highly significant negative correlation(r=-0.3976, p=0.01) between the number of Fusarium spp. and that of Streptomyces spp. Relationship between root rot and the amount of available phosphorus was significantly positive (r=0.3162, p=0.05), however, there was no correlation between the two factors within same soil torture.
Effects of Boron Application on the Outbreak of Granville wilt in Flue-cured Tobacco
Lee J.D. ; Ban Y.S. ; Yu I.S. ;
Korean journal of applied entomology, volume 21, issue 2, 1982, Pages 73~77
This experiment was carried out to study the effect of boron application on the physiological response and the outbreak of Granville wilt flue-cured tobacco. NC2326 and Coker 86(flue-cured tobacco) were transplante dand investigated in all field culture plots for this experiment. Elongation of shoots were retarded, and stem heights were shortened in all boron applied plots and the more boron applied, the greater these tendency was. The ratio of root branching and root discoloration, and contraction by Granville wilt were docreased markedly in boron plots. Amount of harvested loaves (yield) was increased greatly in 2 and 4kg plots of borax and boric acid per 10a, and the increasing tendency was greater in NC2326 variety than Coker 86. Phenol compounds content in harvested leaves were higher in boron applied plots than non-applied, and was higher in Coker 86, Granville wilt resistant variety, than NC2326. The more boron applied, the higher nicotine content in the harvested leaves was.
Ecological Studios on the Bark Beetles on Plum and Apricot
Yoon J. K. ; Kim K. C. ; Cheon S. J. ; Kim Y. S. ;
Korean journal of applied entomology, volume 21, issue 2, 1982, Pages 78~86
The ecological studies were conducted to identify some bark-beetles on apricot and plum trees in Jeonnam province. Harmful bark-beetles caught from apricot and plum trees were identified as Scolytus seulensis. Xyleborus atratus., X. germanus, X. rubricollis and X. saxeseni. The seoul barkbeetle emerged during the period from early May to late October
, it happens twice in a year, with the peak July 10 and August 25 in 1950, July 15 and August 20 in 1981. A daily peak emerged for adults was at 11 AM to 1 PM. Distribution of holes on the apricot stems varied; more than 100 holes per meter in Henderson (Apricot) and Y-49057 (Apricot), 12 holes per meter in Derbyroyal (Apricot). Comparatively more holes were found in the European variety, and the cardinal distribution was in the order of east, south, west and north. The longer the longth of the mother-gallery, the greater number of egg-gallery found. Optimum temperature for mating was
. The time for mating was longer during May-June than July-August. The fruit weight of damaged plum tree reached 12.25g around four weeks after flowering; where as that of normal tree increased up to 63.5g at harvest time. The natural enemy of the seoul bark beetle was Eurytoma sp. They were found as mature larva or pupa and they emerged from early May to the middle of June. Adult longevity was about a week.
Studios on the Parasites of the Rice Planthoppers I. Egg Parasitism Anagrus nr. flaveolus WATERHOUSB (Hymenoptera : Mymmaridae) on the Rice Planthoppers
Kim J.P. ; Yoo C.Y. ; Kim C.H. ;
Korean journal of applied entomology, volume 21, issue 2, 1982, Pages 87~94
The mymarids egg parasite of rice planthopper, Anagrus nr. flaveolus, were investigated to know their parasitic activities after overwitering in the paddy banks and barley fields, their host preferences and seasonal variations in the pesticide sprayed and unsprayed paddy fields of Gyeongnam province O.R.D. at Jinju from 1977 to 1979. The parasitic activities of Anagrus nr. flaveolus after overwintering in the paddy banks were high early in April and tended to decrease remarkably since mid-April by moving to the barley fields. The parasitic rate of Anagrus nr. flavelous was
between middle and late in April, the peak of egg deposition period. Anagrus nr. flaveolus parasitized Laodelphax striatellus, Nilaparvata lugens, and Sogatella furcifera, but didn't attack the eggs of Nephotettix cincticeps in the paddy fields. High preference was observed with Laodelphax steriatellus. The parasitic activities of Anagrus nr. flaveolus in the pesticide sprayed paddy fields were high in early July and from late August to early September. The parasitic rate in the pesticide unsprayed fields were higher than those of sprayed fields during the pesticide spraying period, from July to August and parasitic activities were active from October to before coming winter.
Chemical Control of the Pine Gall Midges(Thecodiplosis japonensis UCHIDA et INOUYE) V. Effect of ULV Foliar Spray of Some Insecticides
Choi Seung-Yoon ; Park Hyung-Man ; Chung Bu-Ken ;
Korean journal of applied entomology, volume 21, issue 2, 1982, Pages 95~98
The insecticides salithion
, and methamidophos
were evaluated on the effectiveness of single ULV foliar spray for the control of the pine fall midges(Therodiplosis japonensis UCHIDA et INOUYE) when the insecticides diluted with the 50 times of water were applied to the pine trees
on June 6 by ULV Sprayer(Battery-type of 12 voltage, devised by Union Carbide). A single ULV foliar spray of salithion, decamethrin, and phethoate among the insecticides tested was significantly effective for the pressure of the gall incidence by the insects.
Classification of the Anthomyiidae from Korea (I) (Diptera: Calyptratae)
Kwon Yong Jung ; Suh Sang Jae ;
Korean journal of applied entomology, volume 21, issue 2, 1982, Pages 99~102
This report deals with three species belonging to three genera of anthomyiid pests from Korea, among them one species is new to science as: Emmesomyia koreana n. sp., and two species are newly recorded from Korean fauna: Meliniella luteipennis (Ringdahl, 1950) and Delia echinata (Seguy, 1923).