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- 저자 : 강병화 ( Byeung Hoa Kang ) (검색결과 47 건)
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강병화,Kang, Byeung-Hoa 한국잡초학회 1984 Weed&Turfgrass Science Vol.4 No.2
Chlorsulfuron (chemical name : 2-Chloro-N-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)-aminocarbonyl-benzenesulfonamide) is a herbicidally active ingredient which shows effect against susceptible weeds already at such low rates like 5-20g active ingredient per hectare. In the here reported trials metabolism in several sensitive cultivated plants and weeds have been analysed using ^{14}C-labelled active ingredient. The uptake of chlorsulfuron by leaves or the root system is good in all plants species, and translocation takes place either symplasmatically or apoplasmatically. Metabolism takes place in all investigated plant species by development of hydrophile suhstances in roots and shoots. Decomposition of chlorsulfuron in roots and shoots of tolerant species (Triticum aestivum and Hordeum vulgare) to polare substances takes place quantitatively faster and quicker than in susceptible species (Beta vulgaris and Matricaria chamomilla).
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우리나라 우점 (優占) 잡초종의 휴면에 (休眠) 관한 생리 생태학적 연구
강병화,심상인,이상각,신현원 ( Byeung Hoa Kang,Sang In Shim,Sang Gak Lee,Hyeun Won Shin ) 한국환경농학회 1993 한국환경농학회지 Vol.12 No.2
The seed dormancy of weed species is the important mechanisms to unfavorable conditions but it brings about critical problems in weed control. The factors which induced dormancy were varied with species and their physiological conditions. More than 20 of 50 species of dominant weed species showed the seed dormancy. When several physical treatments were given to seeds to break the dormancy, each species showed the different responses. The germination percentage and germination velocity were increased with alternating temperature. The treatment of more than 4 weeks of stratification had strong effect on dormancy breaking. The α-amylase activities of germinating seeds were increased in proportional to the period of stratification treatment of dormant seeds. The contents of soluble protein and soluble sugar were changed slightly with stratification.
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강병화,심상인,이상각 ( Byeung Hoa Kang,Sang In Shim,Sang Gak Lee ) 한국환경농학회 1996 한국환경농학회지 Vol.15 No.1
The studies were conducted to obtain the basic information of the effects of pollutants on plant species and to select the plant species showing specific responses to the pollutants. For these purposes, paraquat, ammonium, and cadmium as a source of oxidative stress, nitrogen toxicity, and heavy metal toxicity respectively were treated to the plant species. Among the tested plants, Lamiaceae, Brassicaceae, and Caryophyllaceae were tolerant to paraquat, whereas Poaceae and Asteraceae were sensitive. Especially Mosla dianthera of Lamiaceae, Hemistepta lyrata and Aster pilosus of Asteraceae, and Paspalum thunbergii of Poaceae showed higher tolerance than others. Paraquat resistance was related with life style, overwintering capacity, so perennial and biennial species showed higher tolerance than annual species. In response to ammonium, Poaceae showed higher resistance while Fabaceae and Caryophyllaceae showed sensitiveness. Weed species having tolerance to ammonium were Echinochloa crus-galli var. praticola, Panicum dichotomiflorum, Setaria glauca, Chenopodium album, and Solanum nigrum, while Mosla dianthera, Arenaria serpyllifolia and Perilla frutescens var. japonica showed sensitiveness. In the response of plant species to cadmium, Digitaria sanguinalis, Amaranthus lividus showed higher resistance, whereas Galinsoga parviflora, Plantago asiatica, Ambrosia trifida, and Paspalum thunbergii showed sensitiveness. The injured degree on germination stage by pollutants did not related with injured degree on matured stage. During germination, the root elongation was more sensitive than shoot elongation by pollutants, paraquat, ammonium, and cadmium.
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강병화,심상인,이상각 ( Byeung Hoa Kang,Sang In Shim,Sang Gak Lee ) 한국환경농학회 1997 한국환경농학회지 Vol.16 No.2
This experiment were carried out to clarify the effects of several factory wastes on the emergence and seedling growth of five crop species, rice, Chinese cabbage, melon, and tomato. Wastes of three factories treated by several concentrations on the soil in which crop were seeded. In rice seedling experiments, the rice seedlings were treated with factory wastes hydroponically. Factory wastes used in the experiment were obtained from leather, phenol resin, and dye factory. The growth of rice seedlings was inhibited by each factory wastes, but the dry weight of rice seedling was increased by the low concentration below 1/16 dilution of leather factory waste. During 15 days, dry matter accumulation of rice seedlings treated with undiluted factory wastes decreased to 46.0, 51.4, -5.4% of control by treating wastes of phenol resin, leather, and dye factory respectively. The injury of crops by leather factory waste was severe in tomato but slight in barley. Waste of phenol resin factory affects highly both on Chinese cabbage and on melon. When dye factory waste was treated on each crop, all plants died in the treatments of waste solution which diluted to 1/8 of original waste. Tomato and melon were most sensitive crop species to the waste of dye factory. Although the responses of crops to each factory waste were various, the degree of injuries were more higher in vegetables than cereal crops.
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내염성 식물의 탐색 및 생물학적 염해 모니터링 기술의 개발 1. 염해지 식생분석 및 식물종의 내염성 평가
강병화,심상인 ( Byeung Hoa Kang,Sang In Shim ) 한국환경농학회 1998 한국환경농학회지 Vol.17 No.1
This experiment was conducted to classify the plant species occurring in the saline reclaimed land by saline tolerance. The vegetation of reclaimed land was composed of various plant species from halophyte to glycophyte showing different saline tolerances. In the investigated saline region, reclaimed land of Youngjong island, Inchun city, 175 species belonging to 32 families were found. Our survey was carried out in two region, having different salinity due to different desalinization. The electricalconductivity (EC) of more saline region showed 48.0mS/㎝ and the other region showed 13.0mS/㎝. It is assumed that intensity of precipitation and runoff of rainfall may cause salinity gradient in the investigated region. The plant species occurred in the experimental region were classified as 72 species of annual, 42 species of biennial, and 61 species of perennial according to life cycle. For knowing relationship between vegetation of saline region and saline tolerance of occurring species, we tested the saline susceptibility of plant species collected at the saline regions. Testing plants were cultured by nutrient solution containing 200 mM NaCl, the critical concentration of survival in glycophytes. The saline tolerance was graded by the growing capacity in the sand-culture system. The more saline-tolerant species screened by sand culture were Atriplex gmelini, Suaeda asparagoides, Aster tripolium, Suaeda maritima, Salicornia herbacea, and Suaeda japonica. The most saline tolerant family was Chenopodiaceae. Poaceae, Cyperaceae, and Brassicaceae showed relatively high tolerance to saline stress. In the course of growth under the high saline condition, the most noticeable change was the darkening of leaves by increasing of chlorophyll content. The chlorophyll contents were increased with saline stress in most species.
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토란밭의 잡초발생 양상과 몇가지 제초제의 단제 (單劑) 및 조합처리가 제초효과와 수량에 미치는 영향
강병화,이상각,심상인,이기철 ( Byeung Hoa Kang,Sang Gak Lee,Sang In Shim,Gi Chul Lee ) 한국환경농학회 1992 한국환경농학회지 Vol.11 No.2
A cultivar of taro(Colocasia antiquorum var. esculenta Engl.), Tosutoran was cultivated with planting density 60×30 ㎝ at the field of Kwang-ju located in Kyeong-ki province in 1989. The purpose of this experiment was to attain the basic information about the pattern of weed occurrence and the effect of weed control on yield by various treatments in taro field. Ethalfluralin(35 EC), Clomazone(47.1 EC), Paraquat(24.5 Lq.) fb Ethalfluralin and Paraquat fb Clomazone were treated except for untreated plot and hand weeding plot. Weeds occurred were 15 species in l2 families, the dominant weed species were Echinochloa crus-galli, Potulaca oleracea, Acalypha australis in taro field. Weed control effects were higher in combination treatments than in single treatments so the yield was higher in combination treatment than in single treatment. Yield of untreated plot was reduced to 91.8% by comparison with that of hand-weeding plot.
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중금속 오염에 대한 Phytoremediation 용 야생식물 연구
강병화(Byeung Hoa Kang),심상인(Sang In Shim),이상각(Sang Gak Lee),김광호(Kwang Ho Kim),정일민(Il Min Chung) 한국환경농학회 1998 한국환경농학회지 Vol.17 No.4
The potentials of some Korean wild plants as a phytoremediator for cleaning heavy metal pollution were measured. Several plant species, Ambrosia trifida, Brassica juncea, Rumex crispus, and Abutilon theophrasti screened previously for phytoremediator were treated with cadmium and copper solution. In order to know the growth response to heavy metal stress, the plants were cultivated in hydroponic system containing heavy metals with different concentration. To know the effects of heavy metals on emergence and seedling growth, seeds of 4 species were sown in the pot and watered with heavy metal solution adjusted pH to 6.5, 5.5, and 4.5. A proposed species as potential phytoremediator, A. trifida, showed tolerance to 20μ㏖/L Cd and 80μ㏖/L Cu in nutrient solution without apparent growth reduction, and up to 100μ㏖/L Cd and 400μ㏖/L Cu without critical visual injury. Up to 311㎎/㎏ of Cd and 369㎎/㎏ were accumulated in dried aerial part in A. trifida. In contrast, A. theophrasti showed injury at 400μ㏖/L Cu. Significant differences were shown in Cu accumulation among the four species. A. trifida had much higher concentrations of Cd in the shoot, whereas R, crispus accumulated higher concentrations of Cd in the shoot. Testing plant species showed reduced emergence rate with heavy metal treatment. When pH was lowered, the emergence and seedling growth were affected severely with heavy metal. We can suggested that A. trifida was the most proper species for phytoremediation in heavy metal-polluted regions.
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강병화 ( Byeung Hoa Kang ),심상인 ( Sang In Shim ),마경호 ( Kyung Ho Ma ) 한국환경농학회 2003 한국환경농학회지 Vol.22 No.1
The present study was conducted to analyze the vegetational difference in fallowed fields at the different semi stages. Plant species were surveyed on the fields haviit different cropping history, soil moisture conditions, and the duration of set-aside. Effects of soil moisture condition and fallowing duration on the vegetational profiles of fallowed fields in the course of different send stages. In the fields fallowed for more than three years, a conspicuous feature of vegetations was the dominance of perennial species, which was less dominant in the fields fallowed for less than 3 years. The floristic composition of fallowed fields was dependent on the soil moisture condition. However, the influence of fallow history on vegetational composition was less than that of the soil moisture conditions. The dominant species occurred in fallowed upland (dry) fields were changed from Glycine NO, Persicaria thunhetgiana, and Artemisia princeps at 2-year-fallowed to Persicaria thunbergiana, Miscanthhus sinumsis, and Glycine sofa at 6-year-fallowed. In wet followed paddy fields, annual Mo sla pwnctulata, Ambrosia artenuisiifalia, and Setaria vifzdis, the dominant species at 3-year-fallowed, were substituted by perennial A iscanthus simnsis, Aster pilosus, and Hemarthria sibirica at 7-year-followed. When the succession continued for 11 years in wet fields, the vegetation was characterized by the domination of perennials such as Phragn tes com uanis, Tazania Walla, and Typha orientalis. It was suggested that the soil moisture condition was a strong determinant of the dominant species on early send conditions. In the fallowed paddy fields, the species diversity was relatively higher in the fields set-asided as wet condition compared to the fields followed as dry condition.
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