토양산도조정에 따른 사탕무우 , Beta vulgaris L. 붕소결핍증의 출현에 관하여

황종서(Chong Ser Hoang),임경빈(Hyong Bin Im),임웅규(Ung Kyu Lim) 한국식물학회 1979 Journal of Plant Biology Vol.22 No.1-2

Sandy loam plots of pH 5.5 which was created by the reclamation of highlands in Yongin county, Kyeonggi province, was selected for the present experimental study. Sugar beet was cultured in these plots by treating them with calcium hydroxide and 3 replications to maintain pH 5.5, 6.4, 6.8, 7.2, and 7.6, respectively. The growth and yield of sugar beet were investigated and the results obtained showed a great deal of boron deficiency. The growth in its early stage was favorable in high pH plots, while no significant difference was observed in sugar content, root weight and sugar production at the time of harvest in each treated plot. The tendency of sugar accumulation appeared to be identical in terms of pattern in each treated plot; i.e. sugar was accumulated until early September but declined momentarily from the middle of September and then the sugar accumulation was resumed from the middle of October. The number of individuals in boron deficiency was larger in high pH plots and the condition of such boron deficiency was also severe. The result of analysis of boron contained in plant body revealed that the boron content of individuals caused boron contained deficiency by water culture and that occurred in the plots was small alike. The appearance of boron deficiency is characterized by the emergence of black stripes on the surface of the basal part of petiole, severe necrosis of young leaves in the area of growing point and severe wrinkles. Therefore it is felt necessary to pay particular attention to boron deficiency in the culture of sugar beet in our country.

솔잎흑파리 피해림의 소나무 생장에 관하여

임경빈,임웅규,황종서,Im, Hyong Bin,Lim, Ung Kyu,Hoang, Chong Ser 한국생태학회 1977 Journal of Ecology and Environment Vol.1 No.1-2

The growth of red and black pines in Muan, Seochen, Gapyeong and Kochang areas was compared by means of the growth of annual ring width and stem analysis to study the process of damages caused by pine needle gall midge. Red pine forest of Seocheon area began to suffer by pine needle gall midge from 1961 and the damage was to becoming severe from 1967. The damage became so intense tha tmany forests are withering to death from spring of 1975. Black pine forest also began to suffer from 1973. Red pine forest of Muan area was supposed to be suffered from 1973. Red pine forest of Kochang area suffered by pine needle gall midge from 1967. It seems that the damage became severe from 1973 and that black pine forest was also badly damaged from that time. Red pine forest of the control plot, Gapyeong area, began to suffer from 1967 and it also became intense from 1973. Although the areas of Seocheon, Muan, Kochang, and Gapyeong are different from each other in terms of locality and the infitration period of pine needle gall equally from 1967 due to mass development of population or other factors and the damage became more intense from 1973. Black pine forest was also badly damaged from that time. Black pine seems to be stronger in insect resistant than red pine. This can be justified by the fact that it began to suffer belatedly in each area and the degree of damage is moderate. The damage of Seocheon area is the severest following Kochang. Muan area is relatively moderate but the forest becoming decrease in growth.

간척지에서 수도 (水稻) 및 기타작물의 내염성에 (耐鹽性) 관한 연구 - 12. 육묘와 수묘의 염분간척지에서의 내염성에 관하여

임경빈(Hyong Bin Im),황종서(Chong Ser Hoang) 한국식물학회 1970 Journal of Plant Biology Vol.13 No.4

The rice variety, Kwanok, was reared in the water and land beds and transplanted to the reclaimed soil area, having an average salt concentration of 0.39%. Two levels of the moderate and late season cultures with 4 treatments were used. The K and Si contents of the stem part of land bed seedlings were somewhat smaller, but total carbohydrate remarkably larger, the C/N ratio was accordingly greater than water bed seedligs. The rooting ability of land bed seedlings was vigorous markedly in culture solutions, to which added various concentrations of NaCl, The rooting ability of each seedling was not much declined in the culturing solution of up to 9.4mmhos/㎝, (0.6%) of salt concentration, but it was drastically declined in the salt concentration over that. It seemed that the critical salt concentration for the rooting of rice plant. The land bed seedlings in each salty condition markedly decreased compared with the water bed seedling in transpiration rate and it showed a stronger drought resistance and contained a large amount of chlorophyll at transplanting stage, and also showed higher stability of chlorophyll at rooting stage in the salt treatment. The number of panicles, panicle weight, number of grains per panicle and ratio of matured grains of the rice plant grown by the land bed seedlings were much greater and 1,000 grain weight was less than from water bed seedling. The cultural practices with the land bed seedlings increased the rough rice yields by 15% and 11%, respectively, compared with the yields of the moderate and late season cultures by water bed seedlings.

간척지에 있어서의 사탕무우 재배에 관한 기초적 연구 - 1. 간척지에서 사탕무우의 당축적에 (糖蓄積) 관하여

임경빈(Hyong Bin Im),황종서(Chong Ser Hoang) 한국식물학회 1977 Journal of Plant Biology Vol.20 No.1

In order to investigate the possibility of sugar beet culture in reclaimed area of our country and the salt tolerance of sugar beet, a variety Kawemegapoly was used for experimentation in plots of various salt concentration arranged in Kimpo reclaimed area located at Kyongkido Province. The salt concentration of cultivating layer of the field in the west coast of Korea began to decline from the middle of June and rises again in the middle of October growing season of sugar beet as generally seen in relaimed paddy fields of Korea. The soil of less than 0.5% salt concentration is most suitable for the culture of sugar beet has very strong salt tolerance. The sugar accumulation of sugar beet in each plot declined once in the middle part or in latter September and began to proceed again from the early of October. Such temporary retrocession of sugar accumulation was observed.

간척지에서 수도 (水稻) 및 기타작물의 내염성에 (耐鹽性) 관한 연구 - 11. 수도의 염분묘 (鹽分苗) , 육묘 (陸苗) 및 수묘근의 (水苗根) 조직학적 차이와 염분지에서의 발근에 관하여

임경빈(Hyong Bin Im),황종서(Chong Ser Hoang) 한국식물학회 1970 Journal of Plant Biology Vol.13 No.4

The rice variety, Kwanok, was reared in the water, land and salt seed beds and transplanted to the reclaimed soil area having an average of 0.48% salt content(0.67% at the end of April). The plant height of land bed seedlings at transplanting stage was short but the dry-weight/plant-height ratio was large and the rooting ability was vigorous remarkably after transplantation in the salty area. The central cylinder, vessels, sclerenchyma, endodermis and other mechanical tissues of the root of land bed seedlings were well developed while the size of cortical cell layers were small. The cytoplasm of the cortical parenchyma at the root tips seemed to be most abundant in the land bed seedlings. The formation of the aerial cavity in the cortex of primary root was rapid and it seemed that the developmental mechanism of the aerial cavity in the rice plant roots was related to the development of the lateral roots.

Study on the Salt Tolerance of Rice and Other Crops in Reclaimed Soil Areas.

Im, Hyong Bin(任絅彬),Ung Kyu Lim(林雄圭),Chong Ser Hoang(黃鍾瑞) 한국토양비료학회 1971 한국토양비료학회지 Vol.4 No.1

간척지에서 수도 및 기타 작물의 내염성에 관한 연구 - 15. 간척지에 재배한 수도 엽층의 수광 효과에 미치는 염분의 영향

임경빈(Hyong Bin Im),임웅규(Ung Kyu Lim),황종서(Chong Ser Hoang) 한국식물학회 1971 Journal of Plant Biology Vol.14 No.3

In order to observe the factors affecting light utilization efficiency in the canopy of a rice crop grown in reclaimed saline areas in Korea, 22 varieties of rice were cultured at the average salt concentration of 6.05mmhos/㎝ 25℃, (0.39%) in saline soils and non-saline silty loam soils. The inhibition of tillering ability by salt damage at the maximum tillering stage was greater than to growth in height. A significant direct correlation was observed between both ratios and salt concentration with each variety. In the salty areas the length of the flag leaf of the maturing stage showed a positive correlation with the production of rough rice while other living leaf showed a negative correlation. LAI of maturing stage was less in the salty area than in the non-salty area, while the former showed higher ratio in net assimilation and translocation to head with greater RGR before and after the heading stage.

干拓地에서 사탕무우 栽培에 關한 硏究

임형빈,黃鍾瑞 서울大學校 農科大學 1979 서울대농학연구지 Vol.4 No.1

Field experiments were performed in relation to the salt concentration and surgar accumulation of surgar beet, salt tolerance of varieties and fertilizer of it at reclaimed area in Mimyeon, Okku-gun, Jeonla Bukdo provice. The results obtained are summarized as follows: The reclaimed area in Mi-myeon is formed of silt loam and its pH is 7.2∼8.0. Soluble cation and anion were large in high salty plot. While the amount of cation was larger in low salty plot. The contents of nitrogen and organic matter were small while the contents of phosphorus and pottasium were large, as a whole. The change in salt concentration of cultivating layer was related closely to the rainfall. The sugar accumulation of sugar beet was rapid relatively in low salty plot. It was declined to some extent and began to proceed again belatedly in high salty plot. And also the sugar content was large as salt concentration became high. Of 21 sample varieties, Hilleshog Mono 297, Desprez monopoly, Desprez polyploid E and Polyrane E produced large amount of sugar and they were considered to be salt tolerant varieties. The sugar production in reclaimed area was correlated more significantly to the root production than the degree of Brix. It seemed to be desirable to fertilizer two times ordinary non salty field only in case of N in reclaimed area.

韓國에서 사탕무우 糖蓄積에 關한 硏究 : 環境條件의 影響을 中心으로 With Special Reference to the Effects of Environmental Conditions

任絅彬,黃鍾瑞 서울大學校 農科大學 1976 서울대농학연구지 Vol.1 No.1

Taikwalriong of high cold area, Hongchon of quasi-high cold area and Suwon of low plain, a hill area of high soil acidity in Yongin where pH was adjusted to varied levels with calcium hydroxide and reclaimed salty field of varied salt concentrations in the vicinity of Inchon were selected for the present study. The sequence of sugar accumulation of this sample variety, kawemegapoly along with its growth under each different environmental condition was observed. In the Taikwalriong the yield of root-weight was 7.71 tons per 10a and the sugar content of the root was 17.3% which showed far better results than those observed in Hongchon and Suwon areas. This may be considered attibutable to the facts that the Taikwalriong is the most suitable area for the culture of spring sugar beet in respect of the change in the mean temperature throughout the year, variance of temperature in the day and night in growth season, sun-light hours and distribution of precipitation throughout the year. There was observed no significant difference in the yield of root-weight and sugar content in each experimental plot where soil acidity was adjusted within the scope of ranging from 5.5 to 7.6. Judging from the yield of sugar beet in reclaimed field of the western coast, it seemed to be culturable in the soil of less than 0.4% in salt concentration. In the cultivated soil layer under field condition of reclaimed lane, high salt concentration in spring began to decline from rainy season and then rise again from the middle of October when there was little rainfall. Therefore the changing pattern of salt concentration which declines in the growth stage of sugar beet was considered to make the culture of sugar beat of strong salt torenrance easy in reclaimed land. Reclaimed land with field condition in Korea is suitable for the culture of sugar beet. In the experimental farms of reclaimed land in Inchon, Suwon, Yongin and Hongchon, sugar was accumulated until the early of September and thereafter it was decreased for a while by the middle of October, then sugar accumulation took place again. On the other hand, sugar was accumulated continuously without momentary declination in the Taikwalriong.

干拓地에서 사탕무우의 糖蓄積과 無機養分 吸收에 關하여

任絅彬,黃種瑞,林雄圭,趙景植 서울大學校 農科大學 1980 서울대농학연구지 Vol.5 No.1

In order to investigate the sugar accumulation and absorption of mineral nutrients of sugar beet in reclaimed area, a sample variety Kawemegapoly was used in experimental plots of various salt concentration arranged in Mimyeon reclaimed area located at Okgu-gun, Cholla Bukdo Province. The results obtained are summarized as follows: The soil texture of Mimyeon reclaimed area is formed with silty loam which represents an ideal soil condition for the culture of sugar beet in reclaimed area. Although the rainy season of 1976 began belatedly from the latter part of August, the culture of sugar beet showed excellent growth. The salt concentration of cultivating layer of field began to decline from the middle of June and rise again in the middle of October as generally seen in reclaimed area of Korea. The yield of sugar beet in terms of the weight of root was 5.0∼5.5M/T in the plot containing less than 0.5% salt while the plot ot 0.52% showed 4.4M/T and high salty plot of 1.82% salt also showed a large yield amounting to 3.7M/T. Sugar contained in the root observed in terms of Brix degree was 19.6∼19.9% in low salty plot while sugar accumulation in high salty plot was relatively high amounting up to 24.8%. The result of sugar accumulation in each plot of various salt concentration observed in terms of Brix degree revealed that sugar accumulation declined once in the latter part of August or in early September and began to proceed again from the middle of September. Such temporary retrocession of sugar accumulation was considered to be related to high temperature prevailed at that time. In the experiment of sand culture of sugar beet, its growth was more vigorous in the plot containing salt up to 0.5% than in the control plot. The plot containing salt up to 2.0% showed almost similar growth to the control plot. This suggests that the sugar beet is of strong salt tolerance. Inorganic nutritive analysis of sugar beet was made with sample variety obtained from sand culture. The result revealed that N,P, and Mn were absorbed more than the control plot while the absorption of K, Ca, and SiO₂was inhibited. Mg, Zn, and Fe were not affected by the conditions of salt concentration.