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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Environmental Agriculture
Journal Basic Information
Journal DOI :
The Korean Society of Environmental Agriculture
Editor in Chief :
Volume & Issues
Volume 2, Issue 2 - Dec 1983
Volume 2, Issue 1 - Jun 1983
Selecting the target year
Evaluation of Diazinon Residues in Paddy Soil, Brown Rice and Rice Straw
Lee, Young-Deuk ; Lee, Seong-Hee ; Park, Young-Sun ;
Korean Journal of Environmental Agriculture, volume 2, issue 1, 1983, Pages 1~5
A study was undertaken to investigate the persistence of diazinon in two different soils under field conditions. Half-life of diazinon granule(5%) incorporated into soils at a rate of 0.15 ㎏ a.i./l0a was 11 and
days in Suweon and Iri soil under field conditions, respectively. Diazinon residues in brown rice and rice straw harvested from Suweon field were also evaluated by scheduled application intervals. On the basis of maximum residue limit of diazinon in brown rice, it is recommended that the insecticide could be applied upto 15 days before harvest at the limit of 4 spraying times.
Effect of Various Cadmium Compounds on the Growth and Cadmium Uptake of Paddy Rice
Kim, Kyu-Sik ; Kim, Bok-Young ; Park, Young-Sun ;
Korean Journal of Environmental Agriculture, volume 2, issue 1, 1983, Pages 6~12
A pot experiment was conducted to clarify the Cd uptake and levels affecting yield loss according to the growth stages of rice plant. The cadmium was treated with several Cd compounds
and CdS at various concentrations of 0,5,10,25, and 50ppm in soils. The increasing rate of Cd compounds applied to soils increased the Cd content in plant as well as grains but the yield was decreased at high cadmium levels. Cd concentration in soil which could affect the yield decrease were 12.9ppm for
; and 97.6ppm, CdS respectively. Cd concentration in soil reaching at 1ppm of Cd content in brown rice were 13.8ppm from
; and 19.2ppm,
, respectively. Cd content in brown rice could be expected with the Cd content in plant at panicle formation stage.
Studies on the Pollution of Heavy Metal in Vegetable Crops Grown in Suburban Areas;Part I. Influence of Planting Time and Age of Reclaimed Fields on the Contents of Heavy Metals in Leafy and Root Vegetable Crops
Park, Kuen-Woo ; Hwang, Sun-Koo ; Kim, Young-Shik ;
Korean Journal of Environmental Agriculture, volume 2, issue 1, 1983, Pages 13~17
The influence of planting time and age of reclaimed fields on the contents of heavy metals in vegetable crops in suburban areas was investigated. Investigated crops were 4 radish cultivars, Chinese cabbage, spinach, Garland chrisanthemum, and Welsh onion. Cd, Pb, Cu, and Zn were analyzed. The results obtained were as follows. 1) For radishes except Altari-mu and Welsh onion, the highest concentrations of heavy metals were recorded in roots whereas, for Chinese cabbage and Garland chrisanthemum, the highest concentration was appeared in leaves. 2) For lettuce, radishes, and spinach, the lowest concentrations of heavy metals were recorded in winter and the concentrations were the same between spring and autumn. 3) In lettuce difference of concentrations of heavy metals were not appeared between field age after reclamation with sewege sludge. 4) The concentrations of heavy metals observed was not harmful to human health.
Cadmium, Lead, and Zinc Accumulation in Rice Grown at Paddy Soils near Old Zinc-Mining Sites
Yoo, Sun-Ho ; Park, Moo-Eon ; Ro, Hee-Myoung ;
Korean Journal of Environmental Agriculture, volume 2, issue 1, 1983, Pages 18~23
Effect of Cd, Pb, and Zn content in soil on their accumulation in rice was studied by analyzing brown rice(93) and soil samples(180) collected from paddy soils near old zinc-mining sites in 1979 and 1980. Ratio of Cd, Pb, and Zn in brown rice to soil decreased with the increase of their contents in soil and found to be linear function of the inversed values of their contents in soil. Contents of Cd, Pb, and Zn in brown rice harvested in 1980 were lower than those in 1979. The significant difference in contents of Pb and Zn between two years might be attributed to weather. Air temperature and duration of sunshine in 1980 were significantly lower than those in 1979.
Effects of Temperature on the Uptake and Retention of Cesium-137 by the Clam Cyclina sinensis
Yoo, Byung-Sun ; Lee, Jeong-Ho ; Lee, Su-Rae ;
Korean Journal of Environmental Agriculture, volume 2, issue 1, 1983, Pages 24~29
The effects of temperature on the uptake of
from seawater and on the retention after its uptake by the clam Cycling sinensis was investigated under laboratory conditions. The clams exhibited a greater bioaccumulation of
-acclimated animals than those acclimated at
. The viscera of the clams reached the highest bioconcentration factor after 14 days uptake from seawater, but the tissue distribution pattern of
was little influenced, if any, by the uptake temperature. The uptake rate slightly decreased with an increase of temperature in order of
. The radionuclide accumulated in clams was released again in a radionuclide-free seawater according to a two-exponential compartment model. A temperature increase of
reduced the biological half-life of the long-lived component with a factor of about two, whereas it caused no change in the short-lived component.
Studies on the Behaviour of Radionuclides in the Soil-Plant System;1) On the Uptake of Cesium-137 by Soybean
Ryu, Joon ; Kim, Jae-Sung ; Lee, Young-Il ;
Korean Journal of Environmental Agriculture, volume 2, issue 1, 1983, Pages 30~34
The present study was carried out to determine the effect of a radionuclide, cesium-137, in soybean, which is an element released usually from nuclear facilities. Soybean plants were grown on the pots treated with cesium-137
soil and the uptake, translocation and accumulation of the radiocesium in the plant parts were measured at different growth stage. The results are summarized as follows: 1) Visual toxic symptoms on the plants due to treatment of radioactive cesium were not observed up to
soil in a pot. 2) The uptake of cesium-137 in soybean plant was increased with increment of concentration applied, while the uptake of potassium was proportionally decreased, indicating to have an ion antagonistic relationship between them. 3) The absolute amounts of cesium-137 in the plants were gradually increased by the pod setting stage, but rather reduced at harvesting stage. The accumulation occurred more in the leaves and stems than the soybean seeds. 4) The rate of uptake was ranged from 0.069 to 0.005 with proportional decrease by increasing concentration applied and the rate of Cs-137 translocation from plants to seeds was averaged 38.6% in soybean plant. The concentration coefficient was 0.04 in the soybean seeds from the pots treated with
of cesium-137 and decreased with increment of cesium-137 applied.
Studies on the Effect of Environmental Pollution on the Structure of Plant Community
Kim, Tae-Wook ; Lee, Kyong-Jae ; Park, In-Hyeop ; Kim, Joon-Seon ;
Korean Journal of Environmental Agriculture, volume 2, issue 1, 1983, Pages 35~44
In order to elucidate the change of plant community of natural forests caused by air pollution in the area of Mt. Dosjil of Ulsan city, 25 study subplots, 5 subplots from each 5 plots were set up. These plots lay along gradients of chronic exposure to airborne sulfur dioxide (
), fluorides(F) and possibly other pollutants. Total nitrogen, organic matter, available
, and CEC were generally depressed near industrial sourecs of air pollutants. The author found a total 7 species near sources of air pollutants and 13 species at the utmost plot from air pollutants. Number of individuals, species diversity, evenness, similarity index and biomass were generally depressed near the industrial source of air pollutants. Tolerant plants to air pollution is Cyperus amuricus, Calamagrostis arundinacea, Bidens bipinnata, Cocculus trilobus, Digtaria sanguinalis, Persicaria hydropiper, Pinus thunbergii, Ambrosia artemisiifolia var. elatior, Rhododendron schlippenbachii and Robinia pseudoacacia. It contains 4.41ton/ha of aboveground biomass of Robinia pseudoacacia in damaged forest by air pollution and 39.47ton/ha of it in the non-attacked forest. The annual net production is 0.67ton/ha. yr in damaged forest and
in the non-attacked forest.
Effects of Dense Planting on the Growth and Producivity in Hot Pepper(Capsicum annum L.)
Kim, Kwang-Yong ; Park, Sang-Keun ; Lim, Sang-Cheol ;
Korean Journal of Environmental Agriculture, volume 2, issue 1, 1983, Pages 45~54
This experiment was carried out to investigate effects of dense planting on the growth and productivity in varieties of hot pepper at open field. Three varieties (Joseng jinheung, Weonkyo No. 304 and Bulam house Putgochu) were sowed on Jan. 30th and transplanted on May 12th. The planting densities used were 3,300, 5,500 and 8,300 plants per 10a. The results obtained are as follows: 1) With higher plant density, the plant shape was changed from open-type to upright-type and the yield was increased, presumably due to the increase of leaf area index. 2) LAI and SLA per unit area were increased by denser planting. Wonkyo No. 304 presented the highest LAI and the lowest SLA. 3) Dry matter weight per unit area was also increased, however the LW/SW ratio was tended to decrease on denser planting. 4) Through crop growth analysis, it was determined that CGR and NAR were increased during the early growth stages and became decreased from last June. 5) Light intensity under the canopy formed by denser planting was decreased by 40% measured at 60 ㎝ above the soil surface. The vertical distribution of fruits became concentrated the upper part of plant. Fruit yield per unit area in denser planting was increased as compared to the conventional planting. The number of fruit setting decreased. 6) Generally, no differences in yield were detected in comparison between denser planting and conventional planting harvested on Aug. 30th and Oct. 15th, respectively. But Weonkyo No. 304 increased yield by 18% in denser planting.