광주지방(光州地方) 논거미의 분포(分布)(1)

윤계경,남궁준 한국식물병리학회 1979 한국식물보호학회지 Vol.18 No.3

갓노랑 비단벌레 Scintillatrix djingischani Obeneberger에 關한 硏究(第二報)

尹桂敬 전남대학교 농어촌개발연구소 1964 농어촌개발연구 Vol.2 No.1

除草劑에 衣한 복숭아果樹園의 雜草 防除試驗

尹桂敬,崔福衍 전남대학교 한국농어촌개발연구소 1977 농산어촌개발연구 Vol.12 No.-

Weeding in peach orchard, especially in spring and summer, is one of the most serious problems in Chonnam area. Control trials with several herbicides such as Paracol 40 E.C Paraquat 24.5 E.C and Roundup 41 E.C were carried out on the field as well as with the potted weeds for two years from 1976 to 1977. The results are summarized as follows: A. Field test 1. Weeds in peach orchard of the experimental farm, Chonnam National University were 12 species of 9 families, of which Artemisia vulgaris, Erigeron canadensis Humulus japonicus, Alopeculus aequalis. Rumex crispus and Polygonum hydropiper were the predominant ones. 2. All the weeds but Rumex crispus were effectively controlled by paracol or Paraquat. Withering ratio of more than 95% was obtained by the application of 80g/ 10a of Paracol or by 100g/10a of Paraquat. 3. Roundup was proved to be less effective than the other two herbicides in controlling orchard weeds. Even though more than 95% of Artemisia vulgalris and Humulus japonicus could be controlled by 200g/10a, of Roundup only 73.1% of Erigeron eanadensis, 81. 9% of Polygonum hydropiper, 70.4% of Rumex crispus, 58.8% of Alopeculμs aequalis even by 300g/10a of Roundup. B. Pot test 1. Three kinds of herbicides. Paracol, Paraquat and Roundup were applied at different growing stages; seedling. vigorous vegetative growth, and flower bud formation. The difference in weeding effect among herbicides was not found. However, flower bud formation stage was proved to be the most appropriate time for herbicide application. The highest withering ratio of more than 81% was obtained from the application at flower bud formation stage compared to around 70% from those at other two stages. 2. Double applications of any herbicides resulted in about 75% withering ratios, which were higher than those (about 62%) from single application. 3. Among the treatments resulted in withering ratios of more than 95%, single application at flower bud formation stage or double applications at seedling stage with 80g/10a of Paracol, single application at flower bud formation stage or double applications at seedling stage with l00g/10a of Paraquat, and single application with ‘ 3OOg/10a at flower bud formation 훌ge or double applications at seedling stage with lOOg/10a of Roundup .weπ considered as the effecient methods in controlling weeds in Peach orchard.

갓노랑비단벌레에 對한 殺虫劑의 效果比較試驗

尹桂敬 전남대학교 한국농어촌개발연구소 1970 농산어촌개발연구 Vol.5 No.-

The study was attempted to determine the effects of such chemicals on the con- troIling of yellow-margined buprestid as SevinxDimecron. Sumithion. Detron, D.M, Endrin, Dieldrin and Rogel during the first experiment year as Parathion. Malathion, Cidial and EPN in addition to the above chemicals during the second year. A randomized complete block with four replications had been set up at the Bia orchllrd in Chonnam Province for the experimental study from 1962 10 1968. Results obtained of the study were; 1) First exþeriment(1962): D.S was one of best insectices for controlling of the yellow-margined buprestid. The order of effectiveness was: D.S>Sumithion> D. M>Detron>Endrin >Dieldrin and Rogel as the total Mean. 2) Seeond exþeriment(l968): The june 5th-block apþlied was more effective than June 10th-and June 2.5th-blocks. 3) As shown in Table 1, 2 and 4, the insecticides applied were signifirant. The timing of insecticides was also significant. 4) Chemicals applied on June 5 such as Malathion. Cidial, Dimecron. Sumitbion of low organic phosphate and Detron of organic chloride were most effective iq this experiment.

갓노랑비단벌레에 對한 殺虫劑의 效果比較試驗

尹桂敬 전남대학교 농어촌개발연구소 1970 농어촌개발연구 Vol.5 No.1

The study was attempted to determine the effects of such chemicals on the con- troIling of yellow-margined buprestid as SevinxDimecron. Sumithion. Detron, D.M, Endrin, Dieldrin and Rogel during the first experiment year as Parathion. Malathion, Cidial and EPN in addition to the above chemicals during the second year. A randomized complete block with four replications had been set up at the Bia orchllrd in Chonnam Province for the experimental study from 1962 10 1968. Results obtained of the study were; 1) First exþeriment(1962): D.S was one of best insectices for controlling of the yellow-margined buprestid. The order of effectiveness was: D.S>Sumithion> D. M>Detron>Endrin >Dieldrin and Rogel as the total Mean. 2) Seeond exþeriment(l968): The june 5th-block apþlied was more effective than June 10th-and June 2.5th-blocks. 3) As shown in Table 1, 2 and 4, the insecticides applied were signifirant. The timing of insecticides was also significant. 4) Chemicals applied on June 5 such as Malathion. Cidial, Dimecron. Sumitbion of low organic phosphate and Detron of organic chloride were most effective iq this experiment.

갈무늬재주나방(Naganoea manleyi Leech)의 生態와 殺虫劑의 效果比較 試驗

尹桂敬 전남대학교 농어촌개발연구소 1966 농어촌개발연구 Vol.4 No.1

Naganoea manleyi Leech is. doing a vital damage to oaks, devastating forest. The life cycle and the effective insecticidal method of this insect was studied for one full year, October 1965 through October 1966. As a result, the following conclusions were drawn. 1. Life cycle studies a) Naganoea manleyi Lecch appear once a year and pass the winter in the egg masses b) Adults appear during the hour 19:00-20:00, and their life lasts for 7-12days. c) They lay eggs on the branches around two meters above the land surface. The average diameter of the masses consisting of approximately 300 eggs each is 30- 40cm. d) Larvaem luIt six times thtoughout thèir life, and the standard deviation was' found to grow larger and the coefficient of variation to decrease according as the number of instar increased. Larva period was 60 days. e) The most prefered plants were found to be Quercus crispula Blume. Quercus acutissima Carrutners, Quercus glandulifera Blume, and Castanea crenata Siebold and Zuccarini. Salix stipularis Smith was slightly eaten. f) The duration of pupa was 109 days and they Iive around 2cm below the land surface. Control measures Chemical examination were made seperately by instar with ten kinds of new insecticides to get the fo lIowing conclusions. a) According to the result of the analysis of variance it was found that there were high significance both between chemicals and between instars. b) The most effective was parathion, and next were dipterax, sumithion and E.P.N. c) malathion was less effective than E.P.N. and rr_ore effectiye t1εn dirr.ecron_ There were significance between the latter two. d) The least effective was Rothan. This examination was made only once. Repeat is required.

감꼭지나방(Kakivoria flavofasciata Nagano)의 生態에 關한 硏究 (第1報)

尹桂敬 全南大學校 農漁村開發硏究所 1963 農業科學技術硏究 Vol.1 No.-

Ecoiogical studies on Kakivoria flavofasciata Nagano 1. Present studies made from 1962 to 1963 was designed in order to investigate the morphological and ecological features of the Kakivoria flavofasciata Nagano which occurs in the area of Biaemyun and paekwoondong Kawnju. 2. Ecological studies were made exclusively on the insects which feeds on persimons Boou. 3. The insect asses the winster in feature larva in the thickish calyx and takes two generations per year. 4. The length of male adult is about 5.5-6.0 mm and female adult about 6.5-7.1mm. A yellawish browish brown hand is on the fore wing toward outer margin between anterior angle and costal margin, and long hair is on the hind margin, fore and hind wing. Antenna is yellewish brown and about 3mm seteceous. 5. The color of larva is dark brownish violet, the head red brown, and the length 0.9-13mm. Many wrinkles and small blak promontories are on the body white hair on every segment, Being old it became pupa in Cocoon. 6. The results of investigation showes the larve infected to persimmon were concentrated in the upper part of fruitstem. 7. The term of the most serious damage of the first generation was about July 5 and of the second generation about September 5. 8. The larva period is 32.9-38.3 days and the pupa stage requries 9.4-9.9 days. 9. It was observed that maximum occurrence of the adult grown at laboratory was earlier 3 days than the occurrence of the adult of the first generation in the field which was most abundant about May 26 and the occurrence of the generation in the field was observed most about August 5 while the maximum occurrence of second generation at the loboratory was about 2days earlien than that of in the field.

全南 地域의 밤나무 害虫調査(第一報)

尹桂敬,金光秀 전남대학교 한국농어촌개발연구소 1977 농산어촌개발연구 Vol.12 No.-

1. About 133 species of insects belonging to 45 families of 5 orders are recorded as the hamful insects to chestnut in Korea. A total of 52 species of 26 families of 5 orders attacting chestnut were collected in Chonnam Province, of which Autoserica castanea W. Cryptothelea formoscicola S.. and Archips fuscocupreana W. were the ones not listed in the records. 2. The major pests to chestnuts in Chonnam Province were found to be 8 species of insects and one species of mite. but the peach pyrolied moth, Dichocrosis punctiferalis G. is considered to be the most destructive one. 3. Chestnut curculio, Curculio dentipes R. was abundantly distributed over the counties of Gwangyang, seungju, Damyang. and Gwangsan, but it was very rare in other counties. 4. Fruit drop due to pyralid moth peaked around the end of July in a peach cultivar of Pomokioseang, while this damage was most severe during August 10 to 15 in other two cultivars, Hwangdo and Baekdo. 5. The peach pyralid moth had its first maximum emergence around June 10 and the second on around the end of July. 6. Infested nuts usualy contained 1 larva(48.0%), but there were some nuts infested by as much as 5 to 6 larvae. The difference in insect damage among cultivars grouped by maturing time was not noticed. The fruit damaging insects in chesnuts were mostly peach pyralied moth(73.5%), and the others were chestnut curculio(15.4%) and nut fruit tortrix. Cydia splendana H. (l1.9%). 7. Insect emerging holes were most frequently found at the ventral pericarp(27. 7%) and leat at the stigma(0.7%) when the nut is devided into 8 parts. 8.The results of chemical applications with 8 insecticides(Kayahos, EPN, DDVP, Elsan, Sumithion, Lcbaycid, Dipterex, and Padan) at 3 different times(July 27, August 21, and September 13) showed that all the tested insecticiedes were nearly equally effective but the August 21 was the best time to apply chemicals among the three dífferent times to control the chestnut insects.

산수유 좀나방의 생태와 방제에 관한 硏究

尹桂敬 전남대학교 한국농어촌개발연구소 1972 농산어촌개발연구 Vol.6 No.-

The results which were studied and investigated for carposina coreana conducted 1971. 5-1972. 3, were summarized as follows; 1. The extent that Carposina coreana overwinters herself underground, is at around 4 to 16m depth. but most of the larva does at 10m depth. 2. The maximum occurrence period of about is around August 25th, and occassionally it occurs up to September 20th. 3. In case of comparing the damaged part of fruit. 'the shoulder part is damaged seriously(l6.6%), and, on the other hand. the base of fruit haft and the low part of fruit are slight. 4. The ratio of the damaged fruit after September 7th is suddenly ineressed to 60%. The maximum number of insect which hides herself in α1c fruit is 3 heads. 5. The degree of fruit damage is different according to the lay of land; mountainous district is more serious than in the plain or river district. The damage ratio of fallen fruit is around 30%. 6. In the soaking experiment for the insecticiidal effectiveness, Birlana. EPN. Sevinx EPN Dimecron and Lebaycid are considered to be very effective over 88%. a며ooly Malathioo was less effective than the other. 7. TOO effective insecticides in the field experiment are Birlana, EPN. Endrin. Lebaycid and Phosvel. which are over 80% effectively. The optimum spraying period was during August 24 to 31th. 8. A parasite fly and a kind of fungus which parasite to Larva were collected, but the ratio of parasite fly is on the degree of 0.5% only.

除草劑에 衣한 복숭아果樹園의 雜草 防除試驗

尹桂敬,崔福衍 전남대학교 농어촌개발연구소 1977 농어촌개발연구 Vol.12 No.1

Weeding in peach orchard, especially in spring and summer, is one of the most serious problems in Chonnam area. Control trials with several herbicides such as Paracol 40 E.C Paraquat 24.5 E.C and Roundup 41 E.C were carried out on the field as well as with the potted weeds for two years from 1976 to 1977. The results are summarized as follows: A. Field test 1. Weeds in peach orchard of the experimental farm, Chonnam National University were 12 species of 9 families, of which Artemisia vulgaris, Erigeron canadensis Humulus japonicus, Alopeculus aequalis. Rumex crispus and Polygonum hydropiper were the predominant ones. 2. All the weeds but Rumex crispus were effectively controlled by paracol or Paraquat. Withering ratio of more than 95% was obtained by the application of 80g/ 10a of Paracol or by 100g/10a of Paraquat. 3. Roundup was proved to be less effective than the other two herbicides in controlling orchard weeds. Even though more than 95% of Artemisia vulgalris and Humulus japonicus could be controlled by 200g/10a, of Roundup only 73.1% of Erigeron eanadensis, 81. 9% of Polygonum hydropiper, 70.4% of Rumex crispus, 58.8% of Alopeculμs aequalis even by 300g/10a of Roundup. B. Pot test 1. Three kinds of herbicides. Paracol, Paraquat and Roundup were applied at different growing stages; seedling. vigorous vegetative growth, and flower bud formation. The difference in weeding effect among herbicides was not found. However, flower bud formation stage was proved to be the most appropriate time for herbicide application. The highest withering ratio of more than 81% was obtained from the application at flower bud formation stage compared to around 70% from those at other two stages. 2. Double applications of any herbicides resulted in about 75% withering ratios, which were higher than those (about 62%) from single application. 3. Among the treatments resulted in withering ratios of more than 95%, single application at flower bud formation stage or double applications at seedling stage with 80g/10a of Paracol, single application at flower bud formation stage or double applications at seedling stage with l00g/10a of Paraquat, and single application with ‘ 3OOg/10a at flower bud formation 훌ge or double applications at seedling stage with lOOg/10a of Roundup .weπ considered as the effecient methods in controlling weeds in Peach orchard.