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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Korean Journal of Environmental Agriculture
Journal Basic Information
Journal DOI :
The Korean Society of Environmental Agriculture
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Volume & Issues
Volume 32, Issue 4 - Dec 2013
Volume 32, Issue 3 - Sep 2013
Volume 32, Issue 2 - Jun 2013
Volume 32, Issue 1 - Mar 2013
Selecting the target year
Liming Effect on Cadmium Immobilization and Phytoavailability in Paddy Soil Affected by Mining Activity
Hong, Chang Oh ; Kim, Yong Gyun ; Lee, Sang Mong ; Park, Hyean Cheal ; Kim, Keun Ki ; Son, Hong Joo ; Cho, Jae Hwan ; Kim, Pil Joo ;
Korean Journal of Environmental Agriculture, volume 32, issue 1, 2013, Pages 1~8
DOI : 10.5338/KJEA.2013.32.1.1
BACKGROUND: Many studies associated with cadmium (Cd) immobilization using lime fertilizer have been conducted for several decades. However, these studies did not suggest exact mechanism of Cd immobilization using lime fertilizer and evaluated effect of lime fertilizer on Cd phytoavailability in rice paddy soil under field condition. METHODS AND RESULTS: This study was conducted to determine exact mechanism of Cd immobilization using lime fertilizer and evaluate liming effect on Cd uptake of rice in contaminated paddy soil.
was mixed with Cd contaminated arable soil at rates corresponding to 0, 1,000, 2,000, 4,000, and 8,000 mg/kg. The limed soil was moistened to paddy soil condition, and incubated at
for 4 weeks.
extractable Cd concentration in soil decreased significantly with increasing
markedly increased net negative charge of soil by pH increase, and decreased bioavailable Cd fractions (F1; exchangeable + acidic and reducible Cd fraction). Calculated solubility diagram indicated that Cd solubility was controlled by soil-Cd.
extractable Cd and F1 concentration were negatively related to soil pH and negative charge.
was applied at rates 0, 2, 4, and 8 Mg/ha and then cultivated rice in the paddy soil under field condition. Cadmium concentrations in grain, straw, and root of rice plant decreased significantly with increasing application rate of
. CONCLUSION(S): Alleviation of Cd phytoavailability with
can be attributed primarily to Cd immobilization due to the increase in soil pH and negative charge rather than precipitation of
, and therefore,
is effective for reducing Cd phytoavailability of rice in paddy soil.
Monitoring of Nitrogen and Phosphorus from Submerged Plants in Boknae Reservoir around Juam Lake
Kang, Se-Won ; Seo, Dong-Cheol ; Lee, Sang-Gyu ; Seo, Young-Jin ; Park, Ju-Wang ; Choi, Ik-Won ; Park, Jong-Hwan ; Lim, Byung-Jin ; Heo, Jong-Soo ; Cho, Ju-Sik ;
Korean Journal of Environmental Agriculture, volume 32, issue 1, 2013, Pages 9~16
DOI : 10.5338/KJEA.2013.32.1.9
BACKGROUND: Eutrophication occurs occasionally in reservoirs around lake in summer and early autumn. Lakeside macrophyte which is one of internal pollutants effects on water quality when it is submerged during rainy season. To improve water quality of water supply source in Boknae reservoir around Juam lake, characteristics of nutrient(N, P) uptake and release by submerged plants were investigated. METHODS AND RESULTS: In order to establish the management plan of submerged plants in Boknae reservoir around Juam lake, water level, rainfall, flooding and non-flooding areas, biomass of dominant plants, contents of nitrogen and phosphorus were investigated during 7 months(August, 2010 through February, 2011). Dominant plants were Miscanthus sacchariflorus(MISSA) and Carex dimorpholepis(CRXDM) in Boknae reservoir. Total plant area of Boknae reservoir in August, 2010 was 987,872
. In Boknae reservoir, flooding occurred from August until February caused by rainfall during rainy season. The total amounts of nitrogen and phosphorus uptakes by MISSA were 247 and 22 kg/total reservoir area, respectively. By CRXDM, the total amounts of nitrogen and phosphorus uptakes were 11,340 and 1,231 kg/total reservoir area, respectively. The total amounts of nitrogen and phosphorus residues by MISSA were 34 and 11 kg/total reservoir area, respectively. By CRXDM, the total amounts of nitrogen and phosphorus residues were 491 and 68 kg/total reservoir area, respectively. CONCLUSION(S): Total amounts of nitrogen and phosphorus releases in Boknae reservoir were 12,212 and 1,324 kg/total reservoir area, respectively. The results demonstrate that total nitrogen and total phosphorus in water were strongly influenced by submerged plants. Therefore, management plan for submerged plants during rainy season will be needed to improve water quality of water supply source in Boknae reservoir around Juam lake.
Characteristics of Benthic Invertebrates in Organic and Conventional Paddy Field
Han, Min-Su ; Nam, Hyung-Kyu ; Kang, Kee-Kyung ; Kim, Miran ; Na, Young-Eun ; Kim, Hye Rim ; Kim, Myung-Hyun ;
Korean Journal of Environmental Agriculture, volume 32, issue 1, 2013, Pages 17~23
DOI : 10.5338/KJEA.2013.32.1.17
BACKGROUND: Today, environmentally friendly farming has become an important feature of agricultural policy. It promotes or sustains farming systems which protect and enhance the environment. This study was conducted to compare benthic invertebrate communities in an organic and a conventional paddy field in South Korea. METHODS AND RESULTS: Benthic invertebrates were collected at 11 regions of a rice paddy from June to August, 2009, 2010 and 2011. These comparisons undertaken using a community assessment approaches such as the number of individuals and species and community composition. Generally, the larger number of individuals and species of benthic invertebrates was observed in an organic paddy than in a conventional paddy field. Organic paddy fields could supported the wider range of species and abundance in aquatic invertebrates comparing to conventional paddy fields. Carrying capacity to support larger numbers of invertebrates also tends to be higher in organic paddy than in conventional paddy field. Specially, organic farming regions surrounded by forests were high quality habitat for benthic invertebrates than other surrounded regions such as grassland. CONCLUSION(S): We concluded that organic farming was more advantaged to benthic invertebrates than conventional farming. In order to improve biodiversity in rice paddy field, farming regimes without agricultural chemicals are recommended. The effect of organic management on biodiversity and abundance of benthic invertebrates could be maximized across highland farmland.
Variation in Population Size of Mudfish by Agricultural Practices in Paddy Fields
Han, Min-Su ; Cho, Kwang-Jin ; Nam, Hyung-Kyu ; Kang, Kee-Kyung ; Na, Young-Eun ; Kim, Miran ; Kim, Myung-Hyun ;
Korean Journal of Environmental Agriculture, volume 32, issue 1, 2013, Pages 24~34
DOI : 10.5338/KJEA.2013.32.1.24
BACKGROUND: This study was carried out to compare population size of mudfish (Misgurnus mizolepis) between the agricultural practices and to investigate the causes of its differences. We also provided basic information for sustainable use of mudfish population in paddy fields. METHODS AND RESULTS: Mudfish and benthic invertebrates which are diet of mudifish were investigated from 8 sites of organic and conventional rice paddy fields in South Korea. Total number of mudfish were 1,882 individuals in survey sites. Mudfish population were 2.4 times larger in organic paddy fields (1,333 individuals) than in conventional paddy fields (549 individuals). The population size of mudfish was larger in Mungyeong-si, Gyeongsangbuk-do and Anseong-si, Gyeonggi-do with relatively better environmental conditions than the other 5 sites including Suwon-si, Gyeonggi-do, Cheongyang-gun, Chungcheongnam-do, Gunsan-si, Jeollabuk-do, Gimje-si, Jeollabuk-do, Hwasun-gun, Jeollanam-do, Hamyang-gun, Gyeongsangnam-do. Benthic invertebrates collected from survey sites were 74 species, 68 genera, 46 families, 19 orders, 6 classes and 3 phyla. According to agricultural practices, benthic invertebrates were identified 66 species, 62 genera, 41 families, 17 orders, 6 classes and 3 phyla in organic paddy fields while there were 66 species, 60 genera, 42 families, 18 orders, 6 classes and 3 phyla in conventional paddy fields. Dominant invertebrates were Chironomidae sp., Branchiopoda sp., Ostracoda sp., and Copepoda sp. There were no differences in dominant species between organic and conventional paddy fields. Population size of mudfish tended to increase with the population size of Chironomidae sp., Branchiopoda sp., Ostracoda sp., and Copepoda sp. But, only population of Chironomidae sp. and Copepoda sp. statistically related to population size of mudfish. The number of individuals of mudfish (Misgurnus mizolepis) was higher at the low rate of urban area than any other surveyed region and was affected by appearance ratio of main preys such as Chironomidae sp. and Ostracoda sp. CONCLUSION(S): The population size of mudfish in rice paddy fields could be affected by environmental conditions and agricultural practices such as organic and conventional methods.
The Influence of Cover-crop (Vicia tetrasperma) Cultivation on the Occurrence of Major Insect Pests and their Natural Enemies in Pepper, Capsicum annum
Han, Eun-Jung ; Hong, Seong-Jun ; Park, Jong-Ho ; Cho, Jeong-Rae ; Choi, Jae-Pil ; Kim, Yong-Ki ; Shim, Chang-Ki ; Kim, Min-Jeong ; Jee, Hyung-Jin ;
Korean Journal of Environmental Agriculture, volume 32, issue 1, 2013, Pages 35~41
DOI : 10.5338/KJEA.2013.32.1.35
BACKGROUND: In organic agriculture, various cover crops have been used to control weeds. In this study, we investigated the suppressive effects of Vicia tetrasperma (L.) Schred (Eolchigi wandu) on the occurrence of major insect pests and their natural enemies in pepper. METHODS AND RESULTS: To estimate the effect of cover-crop on arthropod diversities and occurrences of insect pest in pepper. V. tetrasperma was sowed as cover-crop plot October, 2008 and 2009. Control plot was kept bare in winter season and mulched with black plastic-film before transplanting red pepper seedlings. Pepper seedlings, Capsicum annuum, were transplanted on the 19th of May, 2009 and on the 20th of May, 2010, respectively. Five Yellow sticky traps were set and changed at 7 days interval. Densities of aphids and thrips and damaged fruit rates by oriental tobacco budworm, Helicoverpa assulta, were counted. CONCLUSION(S): Populations of aphids, thrips and braconid wasps were maintained high on V. tatrasperma before transplanting pepper seedlings and in early season of pepper. However, the densities of aphids on pepper in the control plot were much higher than in the cover-crop plot in the early stage of pepper. Damaged fruit rates by both of thrips and oriental tobacco budworm were not significantly different between the two experimental plots.
Effect of RED and FAR-RED LEDs on the Fruit Quality of `Hongro`/M.26 Apple
Kang, Seok-Beom ; Song, Yang-Yik ; Park, Moo-Yong ; Kweon, Hun-Joong ;
Korean Journal of Environmental Agriculture, volume 32, issue 1, 2013, Pages 42~47
DOI : 10.5338/KJEA.2013.32.1.42
BACKGROUND: As improved LEDs (Light Emitting Diode) industry and decreased the price of LEDs in Korea, some farmers try to using the RED LEDs in green house and open field to increase the production of crop under bad weather condition. The aim of this study is to find out the effect of RED and FAR-RED LEDs lighting on the fruit quality of twelve-year old `Hongro`/M.26 apple during night after sunset. METHODS AND RESULTS: FAR-RED (730nm, 2 and 4 hour) and RED (620nm, 2 and 4 hour) with 20 LED/PCB were treated in orchard for 16 weeks from June 10 to October 10 in 2009 and 2010 with control as an comparison. In our experiments, leaf weight was significantly higher in RED LEDs than control, tended to be decreased as times of FAR-RED lighting increased. Fruit weight was increased more in RED LEDs than control in 2009 and 2010, but decreased in FAR-RED lighting compared to control in 2010. Firmness and Hunter`s a value of fruit were increased in FAR-RED lighting with 2 and 4 h than control. Soluble solid contents were higher in 2 h RED and 2, 4 h FAR-RED LEDs compared to control in 2009, there was no significant difference in 2010. Acid contents were no difference among the treatments. CONCLUSION(S): In our results, we found that RED LEDs was more helpful to increase the fruit weight and FAR-RED LEDs promote to be higher hunter a value of fruit skin. So, we thought that it is necessary to more study if mixed of RED and FAR-RED lighting is more helpful to promote fruit quality of `Hongro` apple than single lighting of RED or FAR-RED LEDs respectively.
Development of Proteomics-based Biomarkers for 4 Korean Cultivars of Sorghum Seeds (Sorghum bicolor (L.) Moench)
Kim, Jin Yeong ; Lee, Su Ji ; Ha, Tae Joung ; Park, Ki Do ; Lee, Byung Won ; Kim, Sang Gon ; Kim, Yong Chul ; Choi, In Soo ; Kim, Sun Tae ;
Korean Journal of Environmental Agriculture, volume 32, issue 1, 2013, Pages 48~54
DOI : 10.5338/KJEA.2013.32.1.48
BACKGROUND: Sorghum (Sorghum bicolor (L.) Moench) ranks as the 6th most planted crop in the world behind wheat, rice, maize, soybean, and barley. The objective of this study was to identify bio-marker among sorghum cultivars using proteomics approach such as two-dimensional polyacrylamide gel electrophoresis (2-DE) coupled with mass spectrometry (MS). METHODS AND RESULTS: Proteins were extracted from sorghum seed, and separated by 2-DE. Total 652 spots were detected from 4 different sorghum seed after staining of 2-DE with colloidal Coomassie brilliant blue (CBB). Among them, 8 spots were differentially expressed and were identified using MALDI-TOF/TOF mass spectrometry. They were involved in RNA metabolism (spot1, spot 4), heat shock proteins (HSPs, spot 2), storage proteins (spot 3, spot 5, and spot 6), and redox related proteins (spot 8). Eight of these proteins were highly up-regulated in Whinchalsusu (WCS). The HSPs, Cupin family protein, and Globulin were specifically accumulated in WCS. The DEAD-box helicase was expressed in 3 cultivars except for WCS. Ribonuclease T2 and aldo-keto reductase were only expressed in 3 cultivars except for Daepung-susu (DPS). CONCLUSION(S): Functions of identified proteins were mainly involved in RNA metabolism, heat shock protein (HSP), and redox related protein. Thus, they may provide new insight into a better understanding of the charactreization between the cultivars of sorghum.
Tree Response of `Fuyu` Persimmon to Different Degrees of Cold Damage on the Buds at Budburst
Choi, Seong-Tae ; Park, Doo-Sang ; Son, Ji-Young ; Park, Yeo-Ok ; Hong, Kwang-Pyo ; Rho, Chi-Woong ;
Korean Journal of Environmental Agriculture, volume 32, issue 1, 2013, Pages 55~60
DOI : 10.5338/KJEA.2013.32.1.55
BACKGROUND: The buds of persimmon trees are susceptible to cold damage, often with the late frost, at the time of budburst. This study was conducted to determine effect of the cold damage on shoot and fruit growth the current season. METHODS AND RESULTS: `Fuyu` trees, grown in 50-L pots, were placed for 1 h at
within a cold storage, at their budburst on April 5. Some trees under ambient temperature at
served as the control. Cold damage of the buds containing flower buds was 54% at
, and significantly increased to 95% at
. The bud damage included the complete death of all, complete death of main buds only, or the late and deformed shoot growth in the spring. Number of flower buds in early May dramatically decreased as the damage ratio increased. Since the thinning of flower buds in mid-May and fruitlets in early July was done in no or slightly damaged trees, the final number of fruits and yield did not decrease compared with the control when the damage increased by 60% and 70%, respectively. Average fruit weight and skin coloration tended to be better with increasing bud damage. Shoot growth was more vigorous in those trees whose buds were severely damaged by low temperature. CONCLUSION(S): Shoot growth and the yield may depend on the number of flower buds and percent fruit set after the cold damage.
A Survey on the Pesticide Residues and Risk Assessment for Agricultural Products on the Markets in Incheon Area from 2010 to 2012
Kim, Hye-Young ; Lee, Soo-Yeon ; Kim, Cheol-Gi ; Choi, Eun-Jeong ; Lee, Eun-Ju ; Jo, Nam-Gyu ; Lee, Jea-Man ; Kim, Yong-Hee ;
Korean Journal of Environmental Agriculture, volume 32, issue 1, 2013, Pages 61~69
DOI : 10.5338/KJEA.2013.32.1.61
BACKGROUND: This survey was done to investigate the pesticide residues and to assess their risk on agricultural products on the Markets in Incheon from 2010 to 2012. METHODS AND RESULTS: The total number of samples were 16,025 for agricultural products and these were analyzed by multi-residue method using GC-ECD/NPD, GC-MS, LC-MS/MS and HPLC-PDA/FLD. The violation rates of the samples over maximum residue limits(MRLs) of pesticide residues established by Korean Food and Drug Administration in the survey of 2010, 2011 and 2012 were 1.2%, 0.8% and 0.7%, respectively. CONCLUSION(S): Of the total violated samples, more than 75% of the rates were recorded from the samples of leafy vegetables. Most commonly encountered agricultural commodities over MRLs were Chwinamul, perilla leaves and crown daisy. The pesticides detected yearly over MRLs during three years were endosulfan, chlorpyrifos, diazinon, lufenuron, chlorothalonil, flutolanil, procymidone, ethoprophos. Estimated daily intakes compared to acceptable daily intakes, except radish and Welsh onion, is estimated less harm on human in 10 kinds of pesticides which frequently occurred violation.
Development and Validation of Analytical Method for Nitroxoline in Chicken Using HPLC-PDA
Cho, Yoon-Jae ; Chae, Young-Sik ; Kim, Jae-Eun ; Kim, Jae-Young ; Kang, Ilhyun ; Lee, Sang-Mok ; Do, Jung-Ah ; Oh, Jae-Ho ; Chang, Moon-Ik ; Hong, Jin-Hwan ;
Korean Journal of Environmental Agriculture, volume 32, issue 1, 2013, Pages 70~77
DOI : 10.5338/KJEA.2013.32.1.70
BACKGROUND: Nitroxoline is an antibiotic agent. It is used for the treatment of the second bacterial infection by the colibacillosis, salmonellosis and viral disease of the poultry. When the nitroxoline is indiscreetly used, the problem about the abuse of the antibiotics can occur. Therefore, this study presented the residue analytical method of nitroxoline in food for the safety management of animal farming products. METHODS AND RESULTS: A simple, sensitive and specific method for nitroxoline in chicken muscle by high performance liquid chromatograph with PDA was developed. Sample extraction with acetonitrile, purification with SPE cartridge (MCX) were applied, then quantitation by HPLC with C18 column under the gradient condition with 0.1 % tetrabutylammonium hydroxide-phosphoric acid and methanol was performed. Standard calibration curve presented linearity with the correlation coefficient (
) > 0.999, analysed from 0.02 to 0.5 mg/L concentration. Limit of quantitation in chicken muscle showed 0.02 mg/kg, and average recoveries ranged from 72.9 to 88.1 % in chicken muscle. The repeatability of measurements expressed as coefficient of variation (CV %) was less than 12 % in 0.02 and 0.04 mg/kg. CONCLUSION(S): Newly developed method for nitroxoline in chicken muscle was applicable to food inspection with the acceptable level of sensitivity, repeatability and reproducibility.
Residual Change of Deltamethrin in Stream Water after Spaying for Pest Control of Stream Levee
Han, Ye-Hun ; Park, Jae-Hun ; Lim, Jong-Sung ; Lee, Yong-Ju ; Lee, Sung-Kyu ; Lee, Kyu-Seung ;
Korean Journal of Environmental Agriculture, volume 32, issue 1, 2013, Pages 78~83
DOI : 10.5338/KJEA.2013.32.1.78
BACKGROUND: This study was performed to investigate the change of deltamethrin residue after spraying for control of hygienic insects in bush of levee at Bansuk-dong stream (A) and Juk-dong ditch (B) in Yuseong, Daejeon. The drop concentrations and disappearance of deltamethrin residue in stream water were determined to evaluate the toxic effects of stream ecosystem. METHODS AND RESULTS: Water samples were collected at 7 points including 0, 5, 10, 20, 40, 70 and 100 m downstream from the deltamethrin spraying point. Water sample was partitioned into dichloromethane, and was determined with GC/
-ECD. Limit of Quantitation of deltamethrin was 0.04
. Recoveries of deltamethrin at two fortification levels of 0.4 and 2.0
Residual Characteristics of Insecticides Used for Oriental Tobacco Budworm Control of Paprika
Lee, Dong Yeol ; Kim, Yeong Jin ; Kim, Sang Gon ; Kang, Kyu Young ;
Korean Journal of Environmental Agriculture, volume 32, issue 1, 2013, Pages 84~93
DOI : 10.5338/KJEA.2013.32.1.84
BACKGROUND: This study was carried out to investigate the residual characteristics of insecticides used for Oriental Tobacco Budworm control and to establish the recommended pre-harvest residue limit leading to contribution in safety of paprika production. METHODS AND RESULTS: The recommended Pre-Harvest Residue Limits (PHRLs) of insecticides during cultivation of paprika were calculated from residue analyses of insecticides in fruits 1, 3, 5, 7, 10, 12, 15, 18 and 21 days after treatment. Paprika samples were extracted with QuEChERS method and cleaned-up with amino propyl SPE cartridge and PSA, and insecticide residues were analyzed either by HPLC/DAD or GLC/ECD. The limits of detection were 0.01 mg/kg for 5 insecticides. Average recoveries were
of 5 insecticides at fortification levels of 0.1 and 0.5 mg/kg. The biological half-lives of the insecticides were 8.5 days for bifenthrin, 11.8 days for chlorantraniliprole, 16.8 days for chlorfenapyr, 7.1 days for lamda-cyhalothrin and 31.3 days for methoxyfenozide at recommended dosage, respectively. CONCLUSION(S): The pre-harvest residue limits for 10 days before harvest were recommended 1.05 mg/kg, 1.41 mg/kg, 0.93 mg/kg, 2.06 mg/kg and 1.08 mg/kg as bifenthrin, chlorantraniliprole, chlorfenapyr, lamda-cyhalothrin and methoxyfenozide, respectively. This study can provide good practical measures to produce safe paprika fruit by prevention of products from exceeding of MRLs at pre-harvest stage.