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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Korean Journal of Soil Science and Fertilizer
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Journal DOI :
Korean Society of Soil Science and Fertilizer
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Volume & Issues
Volume 37, Issue 6 - Dec 2004
Volume 37, Issue 5 - Oct 2004
Volume 37, Issue 4 - Aug 2004
Volume 37, Issue 3 - Jun 2004
Volume 37, Issue 2 - 00 2004
Volume 37, Issue 1 - 00 2004
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Micromorphological Characteristics of Soil with Different Patent Materials
Zhang, Yong-Seon ; Jung, Seog-Jae ; Kim, Sun-Kwan ; Park, Chang-Jin ; Jung, Yeon-Tae ;
Korean Journal of Soil Science and Fertilizer, volume 37, issue 5, 2004, Pages 293~303
This experiment was conducted to investigate the direction or orientation of clay particle movement in argillic horizons (Bt) for clarifying the soil classification of soils. Soil samples were collected from 22 soil series containing Bt horizons. Physical and chemical characteristics and mineral and chemical compositions of clay in the soils were analyzed. Micoromorphological characteristics of the Bt horizons were also investigated with thin sections of the natural undisturbed and oriented soil samples. Average clay content in the Bt horizons was 28% and 1.33 times higher comparing to that in the surface layer. Soil pH was higher, but cation exchange capacity (CEC) and organic matter content were lower in Bt horizon than those in the surface layer. There was an evidence of clay accumulation in Bt horizons of all soil series examined except Bangog series. Although there was an increase of clay content in the horizons in Bangog series, the clay was not originated from illuviation process. The translocation of clay was in the order of an 2:1 expandable clay minerals > 2:1 non-expandable clay minerals > 1:1 clay minerals. The illuvial substances in argillic horizon were composed with clay, amorphous iron and opaque mineral. The micoromorphological features of Bt horizon were void coating, channel infilling and grain coating. There was an apparent boundary between clay coating and the groundmass in residuum and colluvium, but Bt horizon of alluvium was composed of a skew plane amputated by the physical operation.
Changes of Physical Properties of Soils by Organic Material application
Kim, Lee-Yul ; Cho, Hyun-Jun ; Han, Kyung-Hwa ;
Korean Journal of Soil Science and Fertilizer, volume 37, issue 5, 2004, Pages 304~314
The objective of this study was to investigate the effect of organic materials (compost, straw, green manure, pig manure, seed production oil cake, and industrial by products including municipal sewage sludge, industrial sewage sludge, leather processing sludge, and alcohol fermentation processing sludge) on physical properties of soils in seven paddy and four upland fields with differential soil textures, sandy loam, loam, or clay loam, etc. The investigated physical parameters were bulk density (BD), air permeability (AP), macroporosity, hardness, shear resistance, frictional resistance, water stability aggregate (WSA), and Middleton's dispersion ratio. Except for coarse sandy loam field with weak structure, a decrease in BD and shear resistance, and an increase in macroporosity and AP in plots with applying organic materials compared to plots without applying organic materials appeared. In upland fields, the positive effect of organic materials on WSA, BD, and air permeability was higher than in paddy fields. The combined plot of NPK and compost had lower BD, hardness, and shear resistance, and higher macroporosity and WSA than plot with compost. Green manure had higher positive effect on physical properties of soils compared to other organic materials and the extent of positive effect had no significant correlation with soil organic matter content. Of industrial byproducts applied in coarse sandy loam soil under upland condition, municipal sewage sludge and pig manure compost had higher effect on increase of WSA than leather processing sludge and alcohol fermentation processing sludge. Unlike WSA, there were no significant differences between industrial byproduct types in other physical properties. in silty clay loam soil under the upland condition, straw had more positive effect on soil physical parameters than hairy vetch and pig manure. Therefore, different organic materials had differently active effect on physical parameters depending on types of soil and land use. Especially, it could be thought that well-decomposed organic materials have the advantage of an increase in organic matter content, while coarse organic materials of an increase in WSA.
Comparison of Tyurin Method and Dry Combustion Method for Carbon Analysis in Soils of Low Iorganic Carbon content
Seo, Myung-Chul ; So, Kyu-Ho ; Ko, Byong-Gu ; Son, Yeon-Kyu ;
Korean Journal of Soil Science and Fertilizer, volume 37, issue 5, 2004, Pages 315~321
To compare soil carbon contents by Tyurin method and dry combustion method, we carried out analysis for 212 samples of agricultural land in Korea. The average values of soil carbon contents analyzed by Tyurin method and dry combustion method were
, respectively. Both methods were evaluated as acceptable methods for soil carbon contents as the results showed. The results showed that soil texture had little effect on analysis method of carbon contents. Highly significant linear regression equation, Y = 0.846X (
), was obtained between carbon contents analyzed by Tyurin method (Y) and dry combustion method (X). As a result of comparison with data of carbon contents of the two methods, about 69% of results at dry combustion method have exceeded to results at Tyurin method. Especially, differences between results at two methods became higher as carbon contents were increasing. Tyurin method has been advantages such as shorter analysis time for one sample, more recognition for carbon analysis, and no need for expensive analyzer, while dry combustion method has simpler procedure, no heavy metal wastes, and more samples for analysis at one time.
Relationship Between Chemical Properties of Forest soil Solutions and Element concentrations in Needles of Pinus thunbergii in Industral Complexes
Lee, Wi-Young ; Yang, Jae E. ; Park, Chang-Jin ; Zhang, Yong-Seon ; Ok, Yong-Sik ;
Korean Journal of Soil Science and Fertilizer, volume 37, issue 5, 2004, Pages 322~328
Available nutrients in soil solution play key roles on the growth of plants, but the equilibria in soil solution can be disturbed by acid precipitation. In this study, we investigated the relationships between element concentrations in the needles of Pinus thunbergii and chemical properties of forest soil solutions in the industrial complexes as an effort to find the possible limiting factor(s) causing the forest decline. The Ca/Al molar ratios in needles of Pinus thunbergii collected from the control sites were 18. However, at Onsan and Ulsan industrial complexes, those were decreased to the ranges from 10 to 11 for the one-year old needles and from 9 to 10 for the two-year old needles. The Mg/Al molar ratios showed similar tendencies with the Ca/Al molar ratios of the needles of Pinus thunbergii. In the A horizon, there existed a significant correlation between Mg concentrations in the needles of Pinus thunbergii and Ca/Al molar ratio of forest soil solution. Calcium concentrations in the needles of Pinus thunbergii in the B horizon were also significantly correlated with Ca/Al molar ratios of forest soil solutions. The uptakes of Ca and Mg by Pinus thunbergii were mainly limited by Al in the soil solutions of the A horizon and by Mn and Al in the soil solutions of the B horizon.
Critical Ratios of Ca/Al and Mg/Al in Nutrent Solution Limiting Growth of Pinus thunbergii
Lee, Wi-Young ; Yang, Jae E. ; Park, Chang-Jin ; Zhang, Yong-Seon ; Ok, Yong-Sik ;
Korean Journal of Soil Science and Fertilizer, volume 37, issue 5, 2004, Pages 329~335
Acid deposition in forest adjacent to the industrial complexes causes soil acidification resulting in the leaching of cations, decreases of buffering capacity and increases of toxic metal concentrations such as Al, Fe, Mn and Cu in soil solution. Changes of nutrient availability equilibria by acid deposition have been known to retard the growth of pine trees. Objective of this research was to assess the critical ratios of Ca/Al and Mg/Al limiting the growth of Pinus thunbergii in the hydroponic culture. The Ca concentration and Ca/Al ratio in stalks of pine tree were increased as increasing Ca/Al molar ratio in the nutrient solution, but were not changed when the Ca/Al molar ratio was adjusted to greater than 1. Growth of Pinus thunbergii was inhibited at the Ca/Al molar ratio lower than l due to the Ca deficiency. The molar ratios of Ca/Al in the needles of Pinus thunbergii showed the similar tendency with the stalks. This indicated that Ca/Al molar ratio of 1 in the growth media was the critical level limiting the growth of Pinus thunbergii. Concentration of Mg and Mg/Al molar ratios in the stalks of pine tree were increased as increasing Mg/Al molar ratio in nutrient solution. Molar ratios of Mg/Al in the needles were increased as increasing Mg/Al ratios in nutrient solution up to 0.83, which was the critical level limiting the growth of Pinus thunbergii.
Suitability Class Criteria for Red Pepper with Respect to Soil Morphology and Physical Properties
Jung, Sug-Jae ; Park, Byeong-Sik ; Jang, Gab-Sue ; Hyun, Byung-Keun ; Rim, Sang-Kyu ;
Korean Journal of Soil Science and Fertilizer, volume 37, issue 5, 2004, Pages 336~340
The objective of this study was to establish the decision criteria of land suitability for red pepper using soil morphological and physical properties. The investigation was carried out in Jechen, Goesan, Euiseong, Andong, Gochang and Pyongchang district in Korea. The obtained results showed that factors related to the decision criteria of the land suitability for red pepper cultivation were soil texture, soil drainage class, land slope, available soil depth and stone content. The criteria of the best suitable soil for red pepper was coarse loamy, well drainage class, C-slope (7-15%), 10-20% gravel content and available soil depth deeper than 100 cm. Also in the best suitable soil, hardpan was located below 100 cm from the soil surface. Outbreak rate of phytophthora blight occurred well in the soils with high clay content, poor drainage class, low land slope and low gravel content. Database determining the decision criteria of the land suitability for red pepper in Jinchen-gun was established by Arc info GIS tool.
Mycorrhizal Root Infection and Growth of Cucumber and Tomato Plants by the Inoculated with Glomus sp. In solid Medium Culture
Cho, Ja-Yong ; Kim, Young-Ju ; Jin, Seo-Young ; Kang, Sung-Gu ; Kim, Hong-Lim ; Sohn, Bo-Kyoon ;
Korean Journal of Soil Science and Fertilizer, volume 37, issue 5, 2004, Pages 341~349
This study was conducted to compare the effects of arbuscular mycorrhizal fungi (AMF) on the growth and fruit yield of hydroponically grown cucumber and tomato plants in solid medium culture. Mycorrhizal fungus Glomus sp. was collected from plastic film house soils of cucumber and tomato and inoculated to the experimental crops at the time of seeding and transplanting. Root infection of cucumber and tomato plants by AMF was more significantly increased when the AMF was inoculated at seeding stage than at transplanting stage. In the infected roots of cucumber and tomato, mycorrhizal hyphae was easily observed but vesicle and arbuscule were rare. Overall plant growth was increased with AMF inoculation and the growth was higher when AMF was inoculated at seeding stage. Fresh weight of each fruit of cucumber and tomato and sugar content in tomato fruits were significantly increased with AMF inoculation at seeding stage. The AMF inoculation also increased fruit yields of cucumber and tomato.
Effect of P Levels in Nutrient solution on the Propagation of Arvuscular Mycorrhizal Funfi in Aeroponics
Kim, Young-Ju ; Jin, Seo-Yeong ; Cho, Ja-Yong ; Kim, Kil-Yong ; Cha, Gyu-Seok ; Soh, Bo-Kyoon ;
Korean Journal of Soil Science and Fertilizer, volume 37, issue 5, 2004, Pages 350~355
This experiment was carried out to screen the aeroponically grown host plants suitable for the mass propagation of arbuscular mycorrhizal fungi (AMF) inoculum and clarify the effect of P levels in nutrient solution on the growth of aeroponically grown sweet potato (Ipomoea batatas L.), AMF infection, and mass propagation of mycorrhizal spores, etc. Amount of biomass of host plant became higher, as the P levels in nutrient solutions increased from 5 to 20 M. AMF infection rates in mycorrhizal roots increased in higher P levels in nutrient solution, and decreased in lower parts of mycorrhizal roots by about 18.6-26.0%. About 586 mycorrhizal spores per 1 g fresh root were formed at 16 weeks after inoculation of mycorrhizal inoculum. Total of 830,479 mycorrhizal spores were propagated in each plot.