Pub Date : 2018-12-28DOI: 10.20944/preprints201812.0337.v1
Phuong Le Nguyen, Mau Dung Nguyen
Vietnam is the second largest coffee producer in the world, mostly from the Central Highlands region where water has been becoming a scarce resource. Since 2014, drought has been strongly affecting Central Highlands’ agriculture, particularly coffee production. The drought leads to changes in flowering, ripening and thus harvesting times of coffee. Coffee productivity has reduced about 50 percent. Ultimately, coffee quantity and quality is jeopardized which endangers coffee farmers who occupy 90 per cent of population and their livelihoods mainly rely on coffee. Most of coffee farmers have had to develop alternative strategies to respond to the drought. Based on quantitative and qualitative data collected from 50 coffee households in a community in the Central Highlands, this research has indicated that farmers had to find the ways to adapt as well as to cope with drought. The ways of adaptation and coping were diverse, including short, medium and long-term plans. To strengthen the adaptation and coping strategies of farmers with drought in the short term, it is recommended that authorities provide more technical and financial support to farmers. Furthermore, longer term strategies need to focus on land use planning, investment in irrigation schemes, and consolidated afforestation schemes in appropriate areas.
{"title":"Drought Adaptation and Coping Strategies among Coffee Farmers in the Central Highlands of Vietnam","authors":"Phuong Le Nguyen, Mau Dung Nguyen","doi":"10.20944/preprints201812.0337.v1","DOIUrl":"https://doi.org/10.20944/preprints201812.0337.v1","url":null,"abstract":"Vietnam is the second largest coffee producer in the world, mostly from the Central Highlands region where water has been becoming a scarce resource. Since 2014, drought has been strongly affecting Central Highlands’ agriculture, particularly coffee production. The drought leads to changes in flowering, ripening and thus harvesting times of coffee. Coffee productivity has reduced about 50 percent. Ultimately, coffee quantity and quality is jeopardized which endangers coffee farmers who occupy 90 per cent of population and their livelihoods mainly rely on coffee. Most of coffee farmers have had to develop alternative strategies to respond to the drought. Based on quantitative and qualitative data collected from 50 coffee households in a community in the Central Highlands, this research has indicated that farmers had to find the ways to adapt as well as to cope with drought. The ways of adaptation and coping were diverse, including short, medium and long-term plans. To strengthen the adaptation and coping strategies of farmers with drought in the short term, it is recommended that authorities provide more technical and financial support to farmers. Furthermore, longer term strategies need to focus on land use planning, investment in irrigation schemes, and consolidated afforestation schemes in appropriate areas.","PeriodicalId":106503,"journal":{"name":"JOURNAL OF AGRICULTURE AND ENVIRONMENTAL SCIENCES","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129947051","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}
Pérez-Flores Julián, Sánchez-Gutierrez Facundo, Sol-Sanchez Angel, J. Jesús
For Spanish cedar (Cedrelaodorata L., Meliaceae) is unknown if big fruits contain a greater number of seeds and if those seeds have better physic and biological quality than those coming from small fruits. Therefore, the relation between physic characteristics of fruit and seed with Spanish cedar germination was determined. One hundred seeds per tree from three groups of 12 trees were sown in individual nursery bags and 100 in a seedbed. Fruit weight and number of seeds per fruit differed significantly among the three groups of trees. Fruit size was directly related to seed weight and inversely related to number of seeds per fruit.Germination in nursery bags did not correlate neither to fruit nor seed variables, but correlated in seedbed (r = 0.99, P = 0.03) to both fruit weight and number of seeds per fruit. The conclusion is that weightier fruits correspond to higher number of seed per fruit, smaller seeds and higher germination in Spanish cedar which would be useful to sure the plant production in nurseries.
对于西班牙雪松(Cedrelaodorata L., Meliaceae)来说,大果实是否含有更多的种子以及这些种子是否比小果实的种子具有更好的物理和生物质量尚不清楚。从而确定了果实和种子的物理特性与西班牙雪松发芽的关系。从3组12棵树中选出100颗种子,每棵树在单独的苗圃袋中播种,100颗种子在苗床中播种。三组树木的果实重量和单果种子数差异显著。果实大小与种子重量成正相关,与单果种子数成负相关。苗圃袋中发芽与果实和种子变量均无相关性,但与苗床中果实质量和每果种子数均有相关性(r = 0.99, P = 0.03)。结果表明,果实质量越高,单果种子数越多,种子越小,发芽率越高,这对保证西班牙雪松苗圃的产量有一定的指导意义。
{"title":"Spanish cedar: Relationbetween Fruit and Seed Characteristics with Germination","authors":"Pérez-Flores Julián, Sánchez-Gutierrez Facundo, Sol-Sanchez Angel, J. Jesús","doi":"10.15640/jaes.v8n1a15","DOIUrl":"https://doi.org/10.15640/jaes.v8n1a15","url":null,"abstract":"For Spanish cedar (Cedrelaodorata L., Meliaceae) is unknown if big fruits contain a greater number of seeds and if those seeds have better physic and biological quality than those coming from small fruits. Therefore, the relation between physic characteristics of fruit and seed with Spanish cedar germination was determined. One hundred seeds per tree from three groups of 12 trees were sown in individual nursery bags and 100 in a seedbed. Fruit weight and number of seeds per fruit differed significantly among the three groups of trees. Fruit size was directly related to seed weight and inversely related to number of seeds per fruit.Germination in nursery bags did not correlate neither to fruit nor seed variables, but correlated in seedbed (r = 0.99, P = 0.03) to both fruit weight and number of seeds per fruit. The conclusion is that weightier fruits correspond to higher number of seed per fruit, smaller seeds and higher germination in Spanish cedar which would be useful to sure the plant production in nurseries.","PeriodicalId":106503,"journal":{"name":"JOURNAL OF AGRICULTURE AND ENVIRONMENTAL SCIENCES","volume":"179 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116705316","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}
{"title":"Análisis de las necesidades de información de los estudiantes de las carreras Agropecuarias de la Universidad Técnica de Manabí, respecto al rediseño curricular.","authors":"Mg. Alejandro Narciso Barcia Muentes, Lcda. Karen Yanira Prias Gutiérrez, Mg. Danilo Benito Morales Lucas, Lcda. Gladys Monserrate Briones Mendoza","doi":"10.15640/jaes.v8n1a5","DOIUrl":"https://doi.org/10.15640/jaes.v8n1a5","url":null,"abstract":"","PeriodicalId":106503,"journal":{"name":"JOURNAL OF AGRICULTURE AND ENVIRONMENTAL SCIENCES","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129984349","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}
The article sought to discuss and understand how the functions of the peoples (Manhoso, Várzea da Volta, Angicos and Gangorra), inserted in different relief comparisons of the Korea River Basin-CE, Water during the rainy season, and then to be Used in the dry season. In this case, the analysis of physical and chemical sensors of water and soil in order to identify how the effects on the dynamics of the natural processes caused by the human application by the use of the soil with the reflections on the water quality of the Their effects. Intrinsic functions of environmental systems as well as repercussions for a society.
这篇文章试图讨论和理解民族(Manhoso, Várzea da Volta, Angicos和Gangorra)的功能是如何插入不同的朝鲜河流域的浮雕比较- ce,雨季的水,然后在旱季使用。在这种情况下,通过对水和土壤的物理和化学传感器的分析,以确定如何通过人类应用所引起的自然过程的动态影响,通过对土壤的利用来反映其对水质的影响。环境系统的内在功能以及对社会的影响。
{"title":"The Relief and Spatial Expression of the Dams of the Rio Coreaú River Basin, Ceará, Brasil","authors":"Marcélia Vieira Torres, J. F. Sobrinho","doi":"10.15640/jaes.v8n1a9","DOIUrl":"https://doi.org/10.15640/jaes.v8n1a9","url":null,"abstract":"The article sought to discuss and understand how the functions of the peoples (Manhoso, Várzea da Volta, Angicos and Gangorra), inserted in different relief comparisons of the Korea River Basin-CE, Water during the rainy season, and then to be Used in the dry season. In this case, the analysis of physical and chemical sensors of water and soil in order to identify how the effects on the dynamics of the natural processes caused by the human application by the use of the soil with the reflections on the water quality of the Their effects. Intrinsic functions of environmental systems as well as repercussions for a society.","PeriodicalId":106503,"journal":{"name":"JOURNAL OF AGRICULTURE AND ENVIRONMENTAL SCIENCES","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127435247","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}
Rice farming in south sudanian climate region is mainly rain-fed, subject to drought or flood which can wreck the harvesting hopes of small holder farmers. So, this study was aimed to mitigate the effect of these droughts on yield. Surveys have been done during August 2017 in three lowlands and at the extension services of the Ministry of Agriculture. Climatic data for the last 30 years have been analyzed by using Franquin method versus rice water need in Houet lowland area, Burkina Faso. The results show, that small holder farmers use five improved varieties with cropping cycle varies from 95 to 120 days. The sowing period is between midJune to mid-July. And Yields in this lowland have depended strongly by rainfall. Analyse of climate data versus rice water’s need show that, 97 % over this period, rice water needs were not met at 100%. To mitigate the effects of drought on the productivity of lowland rice, for direct seeding, the periods of 20 to 25 June and 20 to 25 July are suitable for rice varieties with 120 day and 90 days of cropping cycle respectively.
{"title":"Impact of Climate Variability on Water Requirements of Lowland Rice Farming in South Sudanian Climate Region","authors":"Bama Nati Aïssata Delphine, Badaogo A Alima, Kouénia Koradam Felix, Florence Nadine Guétawendé Ouedraogo","doi":"10.15640/jaes.v8n1a18","DOIUrl":"https://doi.org/10.15640/jaes.v8n1a18","url":null,"abstract":"Rice farming in south sudanian climate region is mainly rain-fed, subject to drought or flood which can wreck the harvesting hopes of small holder farmers. So, this study was aimed to mitigate the effect of these droughts on yield. Surveys have been done during August 2017 in three lowlands and at the extension services of the Ministry of Agriculture. Climatic data for the last 30 years have been analyzed by using Franquin method versus rice water need in Houet lowland area, Burkina Faso. The results show, that small holder farmers use five improved varieties with cropping cycle varies from 95 to 120 days. The sowing period is between midJune to mid-July. And Yields in this lowland have depended strongly by rainfall. Analyse of climate data versus rice water’s need show that, 97 % over this period, rice water needs were not met at 100%. To mitigate the effects of drought on the productivity of lowland rice, for direct seeding, the periods of 20 to 25 June and 20 to 25 July are suitable for rice varieties with 120 day and 90 days of cropping cycle respectively.","PeriodicalId":106503,"journal":{"name":"JOURNAL OF AGRICULTURE AND ENVIRONMENTAL SCIENCES","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126103532","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}
With the increase of greenhouse effect gas emissions, caused by human activities, climate change impacts on environment and economic activities, especially agriculture in developing countries, remain currently an international concern. In Burkina Faso, the share of the agriculture sector to the real GDP is the largest historically and represented 44% in 2016. Furthermore, this sector remains heavily dependent on climatic conditions. With regard importance to these facts, the objective of the present study is to analyze the vulnerability of the agricultural sector, mainly the production of maize, millet, sorghum and rice in Burkina Faso to the effects of climate change. To test the hypothesis whether "climate variables, such as rainfall and temperature have a positive impact on cereal production," a linear model was estimated by the stepwise method on panel data. The results show that increased precipitation would result in an increased production of maize, millet and sorghum and decreased that of rice. While an increase in temperature contributes to a decrease of the latter. Thus, the impact of climate change on agriculture is real in Burkina Faso and the adoption of effective adaptation and mitigation is of great importance.
{"title":"Impact of Climate Change on Cereal Production in Burkina Faso","authors":"Tégawendé Juliette Nana","doi":"10.15640/JAES.V8N1A2","DOIUrl":"https://doi.org/10.15640/JAES.V8N1A2","url":null,"abstract":"With the increase of greenhouse effect gas emissions, caused by human activities, climate change impacts on environment and economic activities, especially agriculture in developing countries, remain currently an international concern. In Burkina Faso, the share of the agriculture sector to the real GDP is the largest historically and represented 44% in 2016. Furthermore, this sector remains heavily dependent on climatic conditions. With regard importance to these facts, the objective of the present study is to analyze the vulnerability of the agricultural sector, mainly the production of maize, millet, sorghum and rice in Burkina Faso to the effects of climate change. To test the hypothesis whether \"climate variables, such as rainfall and temperature have a positive impact on cereal production,\" a linear model was estimated by the stepwise method on panel data. The results show that increased precipitation would result in an increased production of maize, millet and sorghum and decreased that of rice. While an increase in temperature contributes to a decrease of the latter. Thus, the impact of climate change on agriculture is real in Burkina Faso and the adoption of effective adaptation and mitigation is of great importance.","PeriodicalId":106503,"journal":{"name":"JOURNAL OF AGRICULTURE AND ENVIRONMENTAL SCIENCES","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128244649","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}
Régina D.C. Bonou-zin, Khalil Allali, A. Fadlaoui, J. Yabi
Since the Rio Earth Conference in 1992, particular attention has been paid to environmental sustainability. Different strategies are then put in place in various areas of activity to reduce environmental impacts and improve environmental performance. This study then aims to analyze the relationship between environmental efficiency and the economic performance of cotton production in Benin. The study was conducted with 355 cotton producers (175 conventional and 180 organic) randomly selected in northern Benin. Indicators to measure economic performance are s are gross margin per hectare, capital and labor productivity. Data analysis were performed by using the Spearman correlation coefficient and linear regression. Findings show that there is a positive and significant relationship between environmental efficiency and economic performance indicators listed above. Results provide insightful information to producers and policy-makers regarding the importance of integrating environmental objectives into production decisions. In addition, improvement in capacity building of producers through environmental awareness and education is then essential for a better integration of sustainable technologies that reduce the level of pollution in the production process in order to promote sustainable development. Keyword: Environmental efficiency, Economic performance, Organic cotton; Conventional cotton, Benin.
{"title":"Environmental Efficiency and Economic Performance of Cotton Production in Benin: What Relationship?","authors":"Régina D.C. Bonou-zin, Khalil Allali, A. Fadlaoui, J. Yabi","doi":"10.15640/jaes.v8n1a16","DOIUrl":"https://doi.org/10.15640/jaes.v8n1a16","url":null,"abstract":"Since the Rio Earth Conference in 1992, particular attention has been paid to environmental sustainability. Different strategies are then put in place in various areas of activity to reduce environmental impacts and improve environmental performance. This study then aims to analyze the relationship between environmental efficiency and the economic performance of cotton production in Benin. The study was conducted with 355 cotton producers (175 conventional and 180 organic) randomly selected in northern Benin. Indicators to measure economic performance are s are gross margin per hectare, capital and labor productivity. Data analysis were performed by using the Spearman correlation coefficient and linear regression. Findings show that there is a positive and significant relationship between environmental efficiency and economic performance indicators listed above. Results provide insightful information to producers and policy-makers regarding the importance of integrating environmental objectives into production decisions. In addition, improvement in capacity building of producers through environmental awareness and education is then essential for a better integration of sustainable technologies that reduce the level of pollution in the production process in order to promote sustainable development. Keyword: Environmental efficiency, Economic performance, Organic cotton; Conventional cotton, Benin.","PeriodicalId":106503,"journal":{"name":"JOURNAL OF AGRICULTURE AND ENVIRONMENTAL SCIENCES","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134134473","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}
This study adopted a GIS-based multi-criteria decision approach in mapping the inherent qualities and potentials of land peculiar to rice cultivation in Oye-Ekiti. FAO framework was used as a guide in selecting variables for the land evaluation. An Analytical Hierarchical Process was used to assign weights to the selected factors with respect to their relative importance, while pairwise comparison was used to rank the factors. The priority generated was used to assign weights in ArcGIS 10.5 weighted overlay toolset in spatial analyst tool. The resulting weights are based on the principal eigenvector of the decision matrix. From the priority value derived from the pairwise comparison result, the criteria were reclassified according to their suitability level and weighted overlay toolset was used to merge the criteria from which the results were obtained. The study area was classified into three categories based on rice cultivation suitability, namely: Highly suitable-S1, moderately suitable-S2, marginally suitable- S3. The result indicates that that 18% (79.925 sq.km) of the total land area is highly suitable for cultivating rice, 70% (326.019 sq.km) is moderately suitable while 12% (57.725 sq.km) is marginally suitable. The study is a GIS-based multi-criteria decision-making approach in selecting the best rice cultivation site.
{"title":"An Application of GIS-Based Multi-Criteria Decision Making Approach for Land Evaluation and Suitability Mapping for Rice Cultivation in Oye-Ekiti, Nigeria","authors":"Otokiti Kolade Victor, Olufemi Samson Adesina","doi":"10.15640/JAES.V8N1A3","DOIUrl":"https://doi.org/10.15640/JAES.V8N1A3","url":null,"abstract":"This study adopted a GIS-based multi-criteria decision approach in mapping the inherent qualities and potentials of land peculiar to rice cultivation in Oye-Ekiti. FAO framework was used as a guide in selecting variables for the land evaluation. An Analytical Hierarchical Process was used to assign weights to the selected factors with respect to their relative importance, while pairwise comparison was used to rank the factors. The priority generated was used to assign weights in ArcGIS 10.5 weighted overlay toolset in spatial analyst tool. The resulting weights are based on the principal eigenvector of the decision matrix. From the priority value derived from the pairwise comparison result, the criteria were reclassified according to their suitability level and weighted overlay toolset was used to merge the criteria from which the results were obtained. The study area was classified into three categories based on rice cultivation suitability, namely: Highly suitable-S1, moderately suitable-S2, marginally suitable- S3. The result indicates that that 18% (79.925 sq.km) of the total land area is highly suitable for cultivating rice, 70% (326.019 sq.km) is moderately suitable while 12% (57.725 sq.km) is marginally suitable. The study is a GIS-based multi-criteria decision-making approach in selecting the best rice cultivation site.","PeriodicalId":106503,"journal":{"name":"JOURNAL OF AGRICULTURE AND ENVIRONMENTAL SCIENCES","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123320148","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}
A novel method which could simultaneously solve the insufficient of carbon source and maximize the utilized of carbon source was investigated in this study. As methanol, glucose and ethanol were taken as respectively carbon sources for the A2/O system, getting the ethanol was the best one on simultaneously the nitrogen and phosphorus removed. Total nitrogen (TN) and total phosphorus (TP) removal efficiencies were 78.23% and 78.18%, and the time of NOX-N removed was 20min.The study about the effect on the external carbon source shown that when dosing method was 0:1:2, the external carbon source concentration was 400mg/L and nitrate recycling ratio was 250%, the A2/O system on simultaneously total nitrogen (TN) and total phosphorus (TP) removed ran well. At this point, phosphorus concentration in anoxic was lower than phosphorus concentration in the influent, which indicated the denitrifying phosphorus accumulating organisms (DPAOs) accumulated in anoxic zones. The removal efficiencies of TN, NH3-N and TP were 82.36%, 96.67% and 92.18%, respectively. The effluent concentrations were 11.43mg/L,4.1mg/L and 0.45mg/L respectively, which reached the type A standard GB18918-2002 level.
{"title":"The external carbon source to each stages of A2/O process for simultaneously nitrogen and phosphorus removal","authors":"K. John, Z. Hong, Liu Yongfeng","doi":"10.15640/jaes.v8n1a14","DOIUrl":"https://doi.org/10.15640/jaes.v8n1a14","url":null,"abstract":"A novel method which could simultaneously solve the insufficient of carbon source and maximize the utilized of carbon source was investigated in this study. As methanol, glucose and ethanol were taken as respectively carbon sources for the A2/O system, getting the ethanol was the best one on simultaneously the nitrogen and phosphorus removed. Total nitrogen (TN) and total phosphorus (TP) removal efficiencies were 78.23% and 78.18%, and the time of NOX-N removed was 20min.The study about the effect on the external carbon source shown that when dosing method was 0:1:2, the external carbon source concentration was 400mg/L and nitrate recycling ratio was 250%, the A2/O system on simultaneously total nitrogen (TN) and total phosphorus (TP) removed ran well. At this point, phosphorus concentration in anoxic was lower than phosphorus concentration in the influent, which indicated the denitrifying phosphorus accumulating organisms (DPAOs) accumulated in anoxic zones. The removal efficiencies of TN, NH3-N and TP were 82.36%, 96.67% and 92.18%, respectively. The effluent concentrations were 11.43mg/L,4.1mg/L and 0.45mg/L respectively, which reached the type A standard GB18918-2002 level.","PeriodicalId":106503,"journal":{"name":"JOURNAL OF AGRICULTURE AND ENVIRONMENTAL SCIENCES","volume":"os10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128326826","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}
D. Bambara, Jacques Sawadogo, A. Bilgo, E. Hien, D. Masse
{"title":"Monitoring of Composting Temperature and Assessment of Heavy Metals Content of Ouagadougou’s Urban Waste Composts","authors":"D. Bambara, Jacques Sawadogo, A. Bilgo, E. Hien, D. Masse","doi":"10.15640/jaes.v8n1a8","DOIUrl":"https://doi.org/10.15640/jaes.v8n1a8","url":null,"abstract":"","PeriodicalId":106503,"journal":{"name":"JOURNAL OF AGRICULTURE AND ENVIRONMENTAL SCIENCES","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122166449","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}