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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Soil Science and Fertilizer
Journal Basic Information
Journal DOI :
Korean Society of Soil Science and Fertilizer
Editor in Chief :
Volume & Issues
Volume 38, Issue 6 - Dec 2005
Volume 38, Issue 5 - Oct 2005
Volume 38, Issue 4 - Aug 2005
Volume 38, Issue 3 - Jun 2005
Volume 38, Issue 2 - Apr 2005
Volume 38, Issue 1 - Feb 2005
Selecting the target year
Best Management Practices Reducing Soil Loss in the Saprolite Piled Upland in Hongcheon Highland
Park, Chol-Soo ; Jung, Yeong-Sang ; Joo, Jin-Ho ; Lee, Jung-Tae ;
Korean Journal of Soil Science and Fertilizer, volume 38, issue 3, 2005, Pages 119~126
Soil erosion at Jawoon-Ri in Hongcheon highland is one of serious problems since saprolite piling on farmland has been typically practiced at 2-3 year's intervals. The objective of the case study was to survey management practices such as tillage, application of saprolite, and cultivating crops and to propose best management practices (BMP) to reduce soil loss in Jawoon-Ri, Hongcheon-Gun. Jawoon-Ri is located in the upper stream of Naerinchun. Upland areas of Jawoon 2 and 4Ri were 206.9 and 142.3 hectare, respectively. Estimation of soil loss in this study was based on USLE (Universal soil loss equation). Annual averaged soil losses were 15.6 MT per hectare in Jawoon-2Ri and 9.0 MT per hectare in Jawoon-4Ri, respectively. This case study tried to find methods to reduce soil erosion below tolerant soil loss level which is
. Estimated soil losses in more than 40% of uplands in Jawoon-2Ri and 4Ri were higher than tolerant soil loss level. Especially, edge of uplands undergone excessive soil erosion by concentrated runoff water. Therefore consolidation of upland edge was included as one of the proposed Best management practices BMP). The proposed BMP in this area were buffer strips, contour and mulching, diversion drain channel, grassed water-way, detour watet-way and cover crops and so on. Amounts for BMP requirements were 7,680 m for buffer strips, 123 ha (35%) for contour and mulching, 201 ha (57%) for diversion drain channel, 13,880 m for grassed water-way, 3,860 m for detour drainage, 8,365 m for sloping side consolidation and 3,492 ha for cover crops, respectively. Application of BMP are urgently needed in uplands which is direct conjunction with stream.
Measurement Technique for Soil Loss Estimation Using Laser Distance Meter in Sloped Upland
Park, Chol-Soo ; Jung, Yeong-Sang ; Joo, Jin-Ho ; Lee, Gye-Jun ;
Korean Journal of Soil Science and Fertilizer, volume 38, issue 3, 2005, Pages 127~133
The measurement technique using laser distometer to estimate soil erosion on sloped upland was assessed for its possibility for application. This technique was practiced in lysimeter installed in Chuncheon and Pyeongchang in 2001. The lysimeter installed at Chuncheon has 12% slope, 10 m slope length, 2 m width, and soil texture was sandy loam, while the lysimeter installed at Pyeongchang showed 23% slope, 15 m slope length, 5 m width, and sandy loam soil. Change of surface soil height was monitored using laser distance meter before and after rainy season on same spots. The Investigated periods in Chuncheon and Pyeongchang were from 22 June to 22 September and from July to October, respectively. Precipitation in Chuncheon and Pyeongchang in this period was 892.2 and 931.9 mm, respectively. Rainfall over 60% of annual precipitation was concentrated on July and August in Chuncheon and September and October in Pyeongchang, respectively. By monitoring the change of surface soil height using laser distance meter before and after rainy season, eroded soil surface in up-down fallow field in Chuncheon was 0.874 cm, while eroded soil surface in slant furrow field in Pyeongchang was 1.127 cm, which correspond to 79.5 and
. Soil erosion increased as furrow length increased. Amounts of estimated soil loss using laser distance meter was 0.98-1.18 times higher compared to the estimated values through Iysimeter experiment, which implies possibility for application to monitor soil loss particularly in up-down and slant furrowed field. However, in the lysimeter with contoured tillage, amount of estimated soil loss using laser distance meter was approximately a half compared to that from lysimeter experiment, which implies inadequacy of distance meter application in contour- tillage field. The great soil loss difference between distance meter and lysimeter might be caused by disruption of some of the contoured furrows in lysimeter. The measurement technique using distometer in this study could be useful to estimate soil loss especially in up-down and slant-tillage fields.
Effect of Cover Crop Hairy Vetch on Prevention of Soil Erosion and Reduction of Nitrogen Fertilization in Sloped Upland
Seo, Jong-Ho ; Park, Jong-Yeol ; Song, Duk-Young ;
Korean Journal of Soil Science and Fertilizer, volume 38, issue 3, 2005, Pages 134~141
Cultivation of winter cover crops and its soil utilization for summer main crops in slope upland is very important at the respects of diminution of soil erosion and non-point pollution source. The effects of cover crop, hairy vetch as no-tillage or conventional tillage on prevention of soil erosion and reduction of chemical nitrogen fertilization were investigated in the slope upland with whiter clover living mulch (partial tillage) in Suwon for three years and with rye (conventional tillage) in Hongcheon for two years, respectively. In Suwon, amounts of soil lost by rainfall runoff decreased as much as 90% by hairy vetch-no tillage (HV-NT), white clover-partial tillage (WF-PT) together with the decrease of rainfall runoff compared to winter fallow with conventional tillage (WF-CT). In addition, amounts of weed also decreased as much as 80-90% by HV-NT and WF-PT. Corn yield decreased much at the plot of WF-PT mainly due to competition for soil water and nutrients between clover and corn at the early corn growth stage. On the contrary, corn yield increased by HV-NT compared to WF-CT regardless of weed control. In Hongcheon, amounts of soil eroded during winter season before corn seeding were reduced as much as 95% by cultivation of hairy vetch and rye compared to winter fallow. Amount of soil eroded during waxy corn growing season was reduced as much as 98% by HV-NT compared to WF-CT. Also, soil incorporation of hairy vetch and rye as green manure with conventional tillage at corn seeding time could reduce soil erosion as much as 70% compared to no soil cover with conventional tillage. Ear yields of waxy corn were increased 10% higher at hairy vetch green manure (HV-CT) without nitrogen fertilizer, 20% higher at HV-NT with standard nitrogen fertilizer, respectively than WF-CT. But ear yields of waxy corn were decreased by rye green manure (R-CT) and HV-NT at the condition of no nitrogen fertilizer. It was concluded that hairy vetch was better as winter cover crop to reduce both soil erosion and chemical nitrogen fertilizer simultaneously in slope upland than other cover crops.
Occurrence and Distribution of Heavy Metals and Natural Radioisotopes Recovered at the Abandoned Coal Mine Tailings
Chung, Doug-Young ; Cho, Il-Sik ;
Korean Journal of Soil Science and Fertilizer, volume 38, issue 3, 2005, Pages 142~149
This investigation was conducted to observe and verify the distribution and their occurrence between heavy metals and natural isotopes in the soil collected at the 40 locations from the abandoned coal mine areas to the sediment of Chungra reservoir located at Chungra-Myon Boryung city, Chungnam. The results of the investigation showed that there were distinctive differences of the contents for the heavy metals and the natural isotopes between the area influenced by the coal mine tailing and the non-influenced area. The amounts of the heavy metals were Pb (
), Cd (
), Cu (
), and Cr (
) while the averages were Cu (
), Pb (
), Cr (
), Cd (
). The standard deviations of Pb and Cu were significantly higher compared to other heavy metals investigated in this experiment. And the amounts of the natural isotopes measured from the dried soil samples were Pb-210 (
), Th-234 (
), Ra-226 (
), Ra-228 (
), K-40 (
) for all locations whereas Cs-137 which is fall-out by nuclear experiment from atmosphere was rarely found. From these results we found that the amounts of natural isotopes such as Pb-210 (4.41%), Th-234 (3.60%), and Ra-226 (2.09%) were less than those found in the coal-tailing while the proportion of Ra-228 (266%) and K-40 (308%) were significantly higher than those in the coal-tailing. Also occurrence of correlations between the amounts of the heavy metals and the natural isotopes was proportionally related.
Effect of Irrigation Water Depth on Greenhouse Gas Emission in Paddy Field
Lee, Kyeong-Bo ; Kim, Jong-Gu ; Park, Chan-Won ; Shin, Yong-Kwang ; Lee, Deog-Bae ; Kim, Jae-Duk ;
Korean Journal of Soil Science and Fertilizer, volume 38, issue 3, 2005, Pages 150~156
The increasing emission of greenhouse gases may change agricultural environment. The agronomic productivity will depend upon change of temperature, precipitation, solar radiation and fertilization. This study was conducted to investigate greenhouse gas emission with irrigation water depth in paddy field. Area of each experiment plot is
, Three treatments with three replications were carried out in this experiment, which was laid out as randomized complete block design. The treatments of irrigation water were maximum field water capacity and 4 and 8 cm depth. The application rate of fresh rice straw was
in combination with chemical fertilizers (
emission was highest at 32 days after rice transplanting with rice straw treatment. The
emission in the plot of maximum field water capacity was lower compared with 4 and 8 cm of irrigation depth.
emission under different water depth in the paddy field were 30 and
at 8 cm depth, 281 and
at 4 cm depth, and 219 and
at water saturated condition. The total emission of greenhouse gases equivalent to
emission with rice straw application were
at 8 cm depth plot,
at 4 cm depth plot and
at water saturated condition. The GWPs without rice straw application were
at 8 cm depth plot,
at 4 cm depth plot and
at water saturated condition.
Nitrogen Balance in Paddy Soil of Control-Release Fertilizer Application
Lee, Kyeong-Bo ; Park, Chan-Won ; Park, Kwang-Lai ; Kim, Jong-Gu ; Lee, Deog-Bae ; Kim, Jae-Duk ;
Korean Journal of Soil Science and Fertilizer, volume 38, issue 3, 2005, Pages 157~163
The increasing of greenhouse gases may change agricultural environment. The agronomic productivity will depend upon change of temperature, precipitation, solar radiation and fertilization. Particularly, nitrogen fertilization considerably influences rice productivity and agricultural environments. This experiment was conducted to study transformation of nitrogen and to determine the primary yield components responsible for yield differences in paddy soil.
concentration of NPK plot in surface water of paddy soil was
at 5 days after transplanting, and then was decreased sharply due to rice absorption and loss to environment.
concentration of NPK plot in surface water was
at 10 days after transplanting.
concentration range of CRF plot in surface water was
at 30th after transplanting. The accumulation of
volatilization in NPK plot was
, which accounted for 20% of N fertilizer applied but using of CRF fertilizer can reduce
volatilization by 67% in paddy soil. Use efficiency of N fertilizer was not different between CRF70% and CRF100% plot. Rate of N use efficiency were 27.4%, 51.2%, 49.0% in paddy field NPK, CRF70% and CRF100% plots respectively. The yield of CRF70% showed the best effect with 9.3% increase production ratio, compare with NPK plot.
Nutrient Load Balance in Large-Scale Paddy Fields during Rice Cultivation
Kim, Min-Kyeong ; Roh, Kee-An ; Lee, Nam-Jong ; Seo, Myung-Chul ; Koh, Mun-Hwan ;
Korean Journal of Soil Science and Fertilizer, volume 38, issue 3, 2005, Pages 164~171
The aim of this study was to evaluate the load of nutrient from paddy fields. Water management practices that can reduce eutrophication and meet water quality requirements will also be addressed. Continuous monitoring from May to September in 2002 and 2003 was conducted for water quantification and qualification at the intensive paddy fields in Icheon, Gyunggi province of Korea. Water balance and concentration variation of nitrogen and phosphorus in the water were independently compared for water quality assessment at each rice cultivation period. Rice land preparation and transplanting periods usually marked the highest water demand when compared to other periods of cultivation. Overall, a greater net irrigation ratio was observed during the transplanting period in 2002 (92.3%) and 2003 (87.2%). The measured total N loads of precipitation, irrigation, drainage, and percolation during the rice cultivation period were 9.9, 41.6, 22.1, and
for 2002 and 15.8, 55.4, 17.3, and
for 2003, respectively. The measured total P loads of precipitation, irrigation, drainage, and percolation during the rice cultivation period were 2.1, 13.0, 3.6, and
for 2002 and 1.6, 15.0, 5.0, and
for 2003, respectively. Daily nutrient load followed the pattern of surface drainage water, but this pattern was changed by rainfall events. The nutrient load in drainage water depends on rainfall and surface drainage water amount from the paddy fields. Interestingly, the load of total N and total P output was smaller than the input load due to the natural infiltration that Occurred during the rice cultivation period. It is concluded that the paddy fields have a beneficial effect on the ecosystem and can reduce eutrophication in the water.