Korean Journal of Environmental Agriculture最新文献_第4页

Variation of CO2 Concentration in Greenhouses and Effects on Growth and Yield in Alstroemeria with CO2 Supplementation CO2CO2 /sub>补充

Korean Journal of Environmental Agriculture Pub Date : 2023-09-30 DOI: 10.5338/kjea.2023.42.3.27

Seonjin Lee, WonSuk Sung, Donguk Park, Pilsoo Jeong

引用次数: 0

Evaluation of Total Residues of Imidacloprid in Livestock Products from Domestic Markets by using a Simultaneous Analytical Method Based on QuEChERS 基于QuEChERS的同时分析方法评价国内畜牧产品中吡虫啉的总残留量

Korean Journal of Environmental Agriculture Pub Date : 2023-09-30 DOI: 10.5338/kjea.2023.42.3.26

Seung Won Lee, Ji Hyun Yoon, Ji Yu Kim, Da Jung Lim, Hyung Wook Jo, Joon Kwan Moon, Hye-Min Gwak, Hee-Ra Chang, In Seon Kim

引用次数: 0

Recovery of Ammonium Nitrogen and Phosphate from the Piggery Wastewater as Struvite and Its Assessment for the Reduction of Water Pollution Through the Field Test 从养猪场废水中回收氮铵和磷酸盐为鸟粪石及其减少水污染的田间试验评价

Korean Journal of Environmental Agriculture Pub Date : 2023-06-30 DOI: 10.5338/kjea.2023.42.2.11

Daeik Kim, S. Hwang, S. Bae, K. Ryoo

{"title":"Recovery of Ammonium Nitrogen and Phosphate from the Piggery Wastewater as Struvite and Its Assessment for the Reduction of Water Pollution Through the Field Test","authors":"Daeik Kim, S. Hwang, S. Bae, K. Ryoo","doi":"10.5338/kjea.2023.42.2.11","DOIUrl":"https://doi.org/10.5338/kjea.2023.42.2.11","url":null,"abstract":"Excess N and P from the livestock manure applied to farm-lands, have entered the water systems and poses a serious threat to the natural environment. Consequently, there has been recent awareness towards the management of live-stock manure and its related fields. In this study, piggery wastewater was collected from a piggery in Pohang city, Korea. At 800℃, thermal decomposition of a natural stone, magnesite (MgCO 3 ), yielded powered MgO with particle sizes ranging between 10 to 100 µm. Furthermore, NH 4+ -N and PO 43– -P were recovered as struvite precipitates from the piggery wastewater, by adjusting the pH with MgO and H 3 PO 4 . At pH 10, the recovery efficiencies of NH 4+ -N and PO 43– -P were found to be 86.1% and 94.1%, respectively. Using an X-ray Diffractometer (XRD), the struvite in the precipitate was confirmed to be consistent with standard pure struvite. Further, the purity of the stru-vite precipitate was analyzed using an energy dispersive X-ray (EDX) and thermal gravimetry-differential thermal analysis (TG-DTA), and found to be between 79.2% and 93.0%. Additionally, struvite-containing piggery waste-water and sawdust were mixed in a weight ratio of 2.5:1 and processed into a mature compost. The newly manufactured compost passed all quality standards required for first-class graded livestock composts. Moreover, this compost was sprayed directly onto the soil at the test site, and various parameters of the soil’s effluent, such as total organic carbon (TOC), total nitrogen (T-N), total phosphorus (T-P), and dissolved oxygen (DO), were analyzed and measured. Based on these results, it is determined that the newly manufactured compost can more significantly reduce water pollution than commercial compost.","PeriodicalId":17872,"journal":{"name":"Korean Journal of Environmental Agriculture","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85118088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantitative Evaluation of Wear Stress Due to Traffic in Zoysia Japonica cv. ‘Zenith’ Using Non-Destructive RGB Image Analysis 结缕草交通磨损应力的定量评价。使用非破坏性RGB图像分析的“天顶”

Korean Journal of Environmental Agriculture Pub Date : 2023-06-30 DOI: 10.5338/kjea.2023.42.2.15

Jae Gyeong Jung, Eun Seol Jeong, Eon-ju Jin, Jun-Hyuck Yoon, K. Jeon, Jin Joong Kim, Eun-Ji Bae

{"title":"Quantitative Evaluation of Wear Stress Due to Traffic in Zoysia Japonica cv. ‘Zenith’ Using Non-Destructive RGB Image Analysis","authors":"Jae Gyeong Jung, Eun Seol Jeong, Eon-ju Jin, Jun-Hyuck Yoon, K. Jeon, Jin Joong Kim, Eun-Ji Bae","doi":"10.5338/kjea.2023.42.2.15","DOIUrl":"https://doi.org/10.5338/kjea.2023.42.2.15","url":null,"abstract":"The RGB (red, green, and blue) imagery analysis is an important remote sensing tool, which estimates the effect of environmental stress on turfgrass growth and physiology. Therefore, this study investigated the effect of continuous wear stress treatment on Zoysia japonica through RGB imagery analysis. The results of the growth measurement showed that the plant height substantially decreased, after nine hours of treatment with no considerable difference thereafter. Dry weight measurement showed a substantial difference in the morphological growth characteristics of the aerial part of the turfgrass, but none in the stolon and root zone. This could be attributed to the short period of compaction treatment. The ROS (reactive oxygen species) analysis showed that ROS rapidly increased due to wear stress treatment. The MDA content increased during the traffic process, whereas the green pixels increased and decreased repeatedly; however, overall, the trend declined but the overall trend decreased. Thus, this study confirmed that MDA was effective in reflecting the wear stress of turfgrass; however, it could through RGB image analysis.","PeriodicalId":17872,"journal":{"name":"Korean Journal of Environmental Agriculture","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88143525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of the Simultaneous Analysis of 36 Sulfonylurea Herbicide Residues in Agricultural Products Using LC-MS/MS LC-MS/MS同时分析农产品中36种磺酰脲类除草剂残留的研究进展

Korean Journal of Environmental Agriculture Pub Date : 2023-06-30 DOI: 10.5338/kjea.2023.42.2.17

Su Jung Lee, Jung Mi Lee, Gui-Hyun Jang, Hyun-Kyung Kim, 지영 김

{"title":"Development of the Simultaneous Analysis of 36 Sulfonylurea Herbicide Residues in Agricultural Products Using LC-MS/MS","authors":"Su Jung Lee, Jung Mi Lee, Gui-Hyun Jang, Hyun-Kyung Kim, 지영 김","doi":"10.5338/kjea.2023.42.2.17","DOIUrl":"https://doi.org/10.5338/kjea.2023.42.2.17","url":null,"abstract":"Sulfonylurea herbicides are widely used in agriculture because they have a long residual period and high selectivity. An analytical method was developed using QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) technique for simultaneous determination of sulfonylurea herbicide residues in agricultural products by liquid chromatography tandem mass spectrometry and for establishment MRL (Maximum Residue Limit) of those herbicides in Korea. Extraction was performed using acetonitrile containing 0.1% formic acid with MgSO 4 (anhydrous magnesium sulfate) and NaCl (sodium chloride) and the extract was cleaned up using MgSO 4 and C 18 (octadecyl). The matrix-matched calibration curves were composed of 7 concentration levels from 0.001 to 0.25 mg/kg and their coefficients of determination (R 2 ) exceeded 0.99. The recoveries of three spiking levels (LOQ, 10LOQ, 50LOQ, n =5) were in the range of 71.7-114.9% with relative standard deviations of less than 20.0% for all the five agriculture products. All validation values met criteria of the European Union SANTE/11312/2021 guidelines and Food and Drug Safety Evaluation guidelines. Therefore, the proposed analytical method was accurate, effective, and sensitive for sulfonylurea herbicide residues determination in agricultural commodities.","PeriodicalId":17872,"journal":{"name":"Korean Journal of Environmental Agriculture","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74667460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of Tree Thinning on Vegetative Growth, Yield and Fruit Quality of ‘Fuji’/M.9 Apple Trees in the High Density Orchard 间伐对富士/M.9营养生长、产量和果实品质的影响高密度果园中的苹果树

Korean Journal of Environmental Agriculture Pub Date : 2023-06-30 DOI: 10.5338/kjea.2023.42.2.13

H. Kweon, Dong-Hoon Sagong

引用次数: 0

Growth of Lettuce and Young Radish and Changes of Soil Chemical Properties after Application of Soldier Fly Compost 施用兵蝇堆肥后生菜和小萝卜的生长及土壤化学性质的变化

Korean Journal of Environmental Agriculture Pub Date : 2023-06-30 DOI: 10.5338/kjea.2023.42.2.18

Young-Sun Kim, Geung-Joo Lee

引用次数: 0

Salt Removal and Agricultural Application of Food Waste-Biochar 食物垃圾的脱盐及农业应用——生物炭

Korean Journal of Environmental Agriculture Pub Date : 2023-06-30 DOI: 10.5338/kjea.2023.42.2.19

Sin-Sil Kim, Jun-Suk Rho, Jae-Hoon Lee, Ah-Young Choi, Seul Lee, Yu-Jin Park, Jonghwan Park, Young-Han Lee, D. Seo

{"title":"Salt Removal and Agricultural Application of Food Waste-Biochar","authors":"Sin-Sil Kim, Jun-Suk Rho, Jae-Hoon Lee, Ah-Young Choi, Seul Lee, Yu-Jin Park, Jonghwan Park, Young-Han Lee, D. Seo","doi":"10.5338/kjea.2023.42.2.19","DOIUrl":"https://doi.org/10.5338/kjea.2023.42.2.19","url":null,"abstract":"Food waste (FW) emissions in South Korea amounted to 4.77 million tons in 2021, and continue to increase. Various technologies have been developed to treat FW, with recent research focusing on biochar production through pyrolysis to reduce FW. However, the agricultural application of food waste-biochar (FWBC) is lim-ited by the salt accumulated during pyrolysis. This study investigated salt removal from and the kinetic characteristics of FWBC, and subsequently evaluated its agricultural applications. FW was pyrolyzed at 350°C for 4 h, and subsequently washed for 0.1, 0.25, 0.5, 0.75, 1, 5, 15, and 30 min to remove salt. FWBC had a salt concentration of 5.75%, which was effectively removed through washing. The salt concentration decreased rapidly at the beginning (1 min) and then slowly decreased, unlike in FW, in which the salt decreased continuously and slowly. The salt removal speed con-stant (K) was 1.5586 (Stage 1, FWBC) > 0.0445 (Stage 2, FWBC) > 0.0026 (FW). In a lettuce cultivation experiment, higher biomass was achieved using washed FWBC than when using unwashed FWBC and FW, and soil properties were improved. Overall, these findings","PeriodicalId":17872,"journal":{"name":"Korean Journal of Environmental Agriculture","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78874134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Risk Assessment of Azoxystrobin Residues in Fresh Crown Daisy from Farm to Fork 新鲜雏菊从农场到餐桌的氮嘧菌酯残留风险评价

Korean Journal of Environmental Agriculture Pub Date : 2023-06-30 DOI: 10.5338/kjea.2023.42.2.16

Sun-Woo Ban, Alice H. Oh, Hee-Ra Chang

{"title":"Risk Assessment of Azoxystrobin Residues in Fresh Crown Daisy from Farm to Fork","authors":"Sun-Woo Ban, Alice H. Oh, Hee-Ra Chang","doi":"10.5338/kjea.2023.42.2.16","DOIUrl":"https://doi.org/10.5338/kjea.2023.42.2.16","url":null,"abstract":"The biological half-life and dissipation rate of azoxystrobin in crown daisy were calculated to establish the pre-harvest residue limits (PHRLs). The pesticide residues were calculated after washing with five different processes to propose an effective process in the household and conducted a risk assessment to confirm dietary safety. Azoxystrobin was sprayed according to the critical good agricultural practices (cGAP) in two different field trials, and the samples were harvested 7 times. The limit of quantitation was 0.02 mg/kg, and the mean recoveries of azoxystrobin were within the range of 70 ∼ 120% with below 20% coefficient variation at the concentration of 0.02 and 0.2 mg/kg . The biological half-lives were 7.4 and 4.7 days, and the dissipation rate constants were 0.0872 and 0.1217 in fields 1 and 2, respectively. The average removal rates were 58.13 ∼ 78.13% by the different washing processes, and there were significant differences between the washing processes (one-way ANOVA analysis and post-hoc Duncan test, p -value<0.05). The residues of azoxystrobin in crown daisy were safe levels from farm to fork after application with the critical good agricultural practice (cGAP) registered in Korea.","PeriodicalId":17872,"journal":{"name":"Korean Journal of Environmental Agriculture","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73946038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Water Management on Greenhouse Gas Emissions from Rice Paddies Using a Slow-release Fertilizer 水分管理对缓释肥料稻田温室气体排放的影响

Korean Journal of Environmental Agriculture Pub Date : 2023-06-30 DOI: 10.5338/kjea.2023.42.2.14

Eun-Bin Jang, Hyun-Chul Jeong, H. Gwon, Hyoung-Seok Lee, Hye-Ran Park, Jong-Mun Lee, T. Oh, Sun-il Lee

{"title":"Effect of Water Management on Greenhouse Gas Emissions from Rice Paddies Using a Slow-release Fertilizer","authors":"Eun-Bin Jang, Hyun-Chul Jeong, H. Gwon, Hyoung-Seok Lee, Hye-Ran Park, Jong-Mun Lee, T. Oh, Sun-il Lee","doi":"10.5338/kjea.2023.42.2.14","DOIUrl":"https://doi.org/10.5338/kjea.2023.42.2.14","url":null,"abstract":"Methane (CH 4 ) and nitrous oxide (N 2 O) are significant contributors to greenhouse gas (GHG) emissions from rice fields. Mid-summer drainage is a commonly practiced water management technique that reduces CH 4 emissions from rice fields. Slow-release fertilizers gradually release nutrients over an extended period and have been shown to reduce N 2 O emissions. However, the combined effect of slow-release fertilizer and water management on GHG emissions remains unclear. This study compared GHG emissions from a rice paddy subjected to mid-summer drainage for 10 days (control) with that of a rice paddy subjected to prolonged mid-summer drainage for 20 days combined with slow-release fertilizer (W+S). Gas sampling was conducted weekly using a closed chamber method. During the rice cultivation period, cumulative CH 4 and N 2 O emissions were reduced by 12.3% and 16.2%, respectively, in the W+S treatment compared to the control. Moreover, the W+S treatment exhibited a 1.9% increase in grain yield compared to the control. Under experimental conditions, slow-release fertilizers, in combination with prolonged mid-summer drainage, proved to be the optimal approach for achieving high crop yield while reducing GHG emissions. This represents an effective strategy to mitigate GHG emissions from rice paddy fields.","PeriodicalId":17872,"journal":{"name":"Korean Journal of Environmental Agriculture","volume":"182 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76617118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0