scholarly journals Study on Enhanced Methods for Calculating NH3 Emissions from Fertilizer Application in Agriculture Sector

Author(s):  
Jiyun Woo ◽  
Saenun Song ◽  
Seongmin Kang ◽  
Eui-Chan Jeon

Ammonia is a representative PM-2.5 secondary product, and the need for management is emerging as health and living damage caused by fine particulate matter worsens. The main source of ammonia is the agricultural sector, and in Korea, 79% of the total ammonia emissions are emitted from the agricultural sector. Among them, there is high uncertainty about how to calculate emissions from ammonia discharged from fertilizer use, and inventory in the U.S. and Europe is borrowed, so inventory needs to be improved according to the situation in Korea. In this study, the ammonia inventory in the agricultural sector in Korea and abroad was examined, and additional activity data that can be used were reviewed. In addition, in order to improve the emission calculation method, the emission was calculated in three ways by different factors. As a result, it was confirmed that the amount of discharge varies depending on the type of soil use or whether cultivated crops are considered, and the possibility of excessive fertilizer top-dress by farmers was confirmed. In order to calculate the emission at a more detailed level based on this study, basic data such as fertilizer input method and regional distribution of crops should be systematically collected, and related follow-up studies should be conducted.

Author(s):  
Olimpia Karczewska ◽  
Agnieszka Młynarska

Background and Objectives: The aim of the study was to assess the factors that influence the occurrence of concerns and their intensification after the implantation of a cardioverter defibrillator. Materials and Methods: This was a prospective and observational study including 158 patients. The study was conducted in two stages: stage I before implantable cardioverter defibrillator (ICD) implantation and stage II follow-up visit six months after ICD implantation. Standardized questionnaires were used in both stages. Results: Age and female gender were significantly correlated with the occurrence and intensity of concerns. Patients who had a device implanted for secondary prevention also experienced higher levels of concern. Additionally, a multiple regression model using the stepwise input method was performed. The model was statistically significant and explained 42% of the observed variance in the dependent variable (p = 0.0001, R2 = 0.4215). The analysis showed that age (p = 0.0036), insomnia (p = 0.0276), anxiety (p = 0.0000) and negative emotions (p = 0.0374) were important predictors of the dependent variable and enabled higher levels of the number of concerns to be predicted. Conclusions: There is a relationship between the severity of the concerns related to an implanted ICD and age, gender, anxiety, negative emotions and insomnia. Indications for ICD implantation may be associated with increased concerns about ICD.


2016 ◽  
Vol 7 (2) ◽  
pp. 1-14
Author(s):  
Rachida Khaled ◽  
Lamine Hammas

The diffusion of the technological innovation can affect the agricultural sector in the three-sided (social, economic and environmental), a hand, it can contribute to solve problems of the agricultural sector: the effects of the climatic changes, the farming exodus and the migration and the problems of poverty and it can improve the agricultural productivity. But on the other hand, he can lead to new problems, such as depletion of energy resources caused by excessive use of energizing technologies, pollution of air and water and the destruction of soil by industrial waste. This paper aims to theoretically and empirically analyze the role of technological innovation in improving agricultural sustainability through the impact of mechanization on agricultural productivity, energy production and net income per capita for a panel of three Maghreb countries (Algeria, Morocco and Tunisia) during the period 1997-2012. By using simultaneous equations, the authors' finding that technological innovation cannot achieve the purpose of sustainable development in the agriculture sector in the Maghreb countries through the negative impact of mechanization and research and development on agricultural productivity.


2004 ◽  
Vol 3 (3) ◽  
pp. 327-346 ◽  
Author(s):  
Morteza Haghiri ◽  
Mohammad Karimkoshteh

AbstractProviding sufficient water for various uses, in particular the agriculture sector, is one of the important problems that Iran faces. Following instructions of the UN Food and Agriculture Organization, Iran started considering its waterreform strategies to avoid water crises. No unique solutions can be drawn from other nations' experience since water crisis is a country-specific problem. Water-reform strategies are important, particularly when the multioriented purpose of sustainability in Iran's agricultural sector is of interest as well. The pros and cons of water-reform strategies are discussed in this paper.


Author(s):  
P Chennakrishnan ◽  
D Thenmozhi

Agriculture remains the dominant supporter of the Indian populace. The thriving industry and service sectors depend on the agricultural sector for their development. The inter-linkage among the three sectors could not be undermined at any cost. It is the massive absorbent of the labor force even though the disguised unemployment exists in varied magnitude. The share of agriculture to the GDP has come down from 57.7% in 1950-51 to 32.2% in 1990-91 at the time of liberalization, 24.6% in 2000-2001, 15.7% in 2009-2010 then 17%. In the post-independence era, stagnant production, low productivity, traditional technology, and poor rural infrastructure were the major challenges for the Government. India is principally an agricultural country. The agriculture sector estimates 18.0% of the GDP and employs 52% of the total workforce. There is a continuous steady decay in its presence towards the GDP, and the agriculture sector is losing its shine and anchor position in the Indian economy. The problems with which the Indian agricultural scenario is charged in present times are many. Still, this in no way undermines the interest of the sector and the role it can play in the holistic and inclusive growth of the country. Agriculture is fundamental for the sustenance of an economy, as is food for a human being.


2021 ◽  
Vol 4 (3) ◽  
pp. 134-139
Author(s):  
Inyang Etim Bassey ◽  
Effiong Eke Nta ◽  
Ekwutosi Offiong

The agriculture sector, the backbone of an economy, provides the basic ingredients to mankind and raw material for industrialization. It plays a strategic role in the process of economic development and growth. Leading industrialized countries of today were once predominantly agricultural economies and still dominate in agriculture. The agricultural sector contributes a major proportion of the national income and caters to a large workforce segment. However, one of the biggest security challenges in Nigeria lately is the expanding clashes between farmers and herders. Today, the conflict has spread over several regions in Nigeria and the Middle-Belt-Region specifically. It is against this foundation that this research is carried out to inspect how conflicts between farmers and herders influence food production, food accessibility, food stability, and food usage in the Middle Belt. The study is based on selected secondary sources and findings from the field research conducted in the Middle Belt region such as Benue, Taraba, Adamawa, Bauchi, Nasarawa, etc. The qualitative research techniques involved in-depth interviews with local people and direct observation. This study observes that the food insecurity in this region is driven by the constant clash between the farmers and herdsmen, which have inflicted fear of going to cultivate their farmland in the lives of these rural farmers, consequently leading to shortages in food production in the region.


2019 ◽  
Vol 10 (10) ◽  
pp. 110-114
Author(s):  
Hussein Abdi Ali ◽  
Salah Abdirahaman Farah

The Agriculture sector in Kenya is as important as the country. Much of the agricultural function was transferred to the devolved units when the new constitution was passed by Kenyans and promulgated. The question many are asking is, have county governments initiated strategies in place to improve food security and ultimately contribute to the economy. Agriculture is the major contributor of our economy today. Kenya needs to be a self-sufficient country and feed its people. County governments have a huge role in ensuring this objective achieved. Based on this, a research title is proposed “Understanding the influence and effects of devolution on agricultural development: A case study of Garissa county, Kenya” The research seeks to clarify to the public and the other stakeholders concerned if actually devolved units have done anything to improve the agricultural sector since its inception. Have county governments put clear, achievable and practical strategies for this sector to grow and how best can counties improve this important sector. The research findings will be very helpful to those who are involve in the agricultural sector, directly or indirectly. The research objectives are; to compare performance of agriculture before and after devolution, to evaluate the achievements of devolution in the agricultural sector, to analyse the challenges faced by county governments in developing this sector, to examine the perception of the public on the best strategies to improve agriculture in Kenya and to give synthesised recommendations to all stakeholders. The research was conducted within Garissa County, four out of the six sub counties. A total of 310 respondents were engaged ranging from farmers, the general public and the staff of the county government The research found out that there is a gap in the sector that needs attention. Agricultural production, although remained steadfast over the years, has been in deplorable situation. The research findings is helpful to all stakeholders-both levels of governments, farmers, the public and non-state actors.  The research commends that the County governments should use bottom-up approach strategy when making critical decision affecting the department. This will aid them obtain raw and unbiased information for action. The department of agriculture experts should be deployed to all sub counties (at the grassroots). 95 percent of these staff stay at county headquarters doing nothing. Their presence at the villages, farms will come in handy or the farmers. People with experience and experts should be employed to spearhead this exercise. Routine visits should be made to the farming areas.


2021 ◽  
Vol 5 (1) ◽  
pp. 11-18
Author(s):  
Yasinta Zulaikha ◽  
Edhi Martono ◽  
Fathul Himam

The phenomenon of the declining interest of young workers working in the agricultural sector has consequences for the sustainability of the agricultural sector going forward. In the future, the burden on the agriculture sector will be heavier with the inc reasing population and increasing food demand. The reasons for the decline in the interest of young workers works at agricultural sector are mainly caused by the image of the agricultural sector which is less prestigious and can not provide adequate rewards. The crisis of young farmers in the agricultural sector and the predominance of older farmers has consequences for the agriculture sector development, particularly on agricultural productivity, market competitiveness, ruraleconomic capacity, and further it will threaten food security and agricultural sector sustainability. The objective of the research is to know the effect of social to career prospects on agricultural career empirically. The research involves 110 respondents with a questionnaire as a research instrument. The type of research in this study is survey research, the type of research which the way to collect data obtained or collected from the sample or population under study. Testing is done with a regression test to determine the effect of social status on career prospects in agriculture. The results of this study indicate that social status has an influence on perceptions of career prospects in the agricultural sector. 


2020 ◽  
pp. 24-27
Author(s):  
Maryna POLENKOVA

The paper defines the structural distribution of sown area of crops. The dynamics of production of cereals and legumes, sugar beets, sunflowers, potatoes, vegetables, fruits and berries. The clustering of regions of Ukraine under similar conditions of development of the enterprises of the agricultural sector specializing in crop production is carried out. According to the results of the analysis, 3 clusters were identified, which gave rise to the possibility of forming (developing) joint effective organizational and economic mechanisms to enhance the development of crop enterprises, favorable for implementation within the cluster. In the course of this study, we focus on the development trends of enterprises specializing in crop products. The lion's share (54.7 %) of sown areas falls on cereals and legumes. Technical crops occupy, which is 32.6 %, and potatoes, vegetables and melons – 6.5 %. It is important to note the long-term positive dynamics of production of cereals and legumes and the growth of production can be traced to all categories of farms – in farms and households. The production of sunflower and vegetable crops was also marked by positive dynamics. The decrease was observed in the production of sugar beets, potatoes, fruit and berry crops. In the context of the study, it is important to identify similar conditions (environment, resources, etc.) for the development of agricultural enterprises between the regions of Ukraine. For this purpose, multifactor statistical analysis (cluster analysis) of key factors of their development was used on the basis of a matrix of 25 selected indicators of development of enterprises specializing in crop production in all regions (600 indicators). To enhance the objectivity of the results, the analysis was conducted in 2010, 2015 and 2019. According to the results of the analysis, taxonomic groups (clusters) were singled out, which made it possible to single out similar regional conditions within each group. Since 2010, there have been significant changes in the regional distribution of Ukraine's agricultural potential. However, during 2015–2019 there is a relative stability in terms of resource provision and use within specific clusters. According to the results of the analysis, three clusters are distinguished: I. Volyn, Zakarpattia, Ivano-Frankivsk, Lviv, Rivne, Chernivtsi, as well as Donetsk and Luhansk regions. II. Dnipropetrovsk, Zhytomyr, Zaporizhia, Kyiv, Mykolaiv, Odesa, Ternopil, Kharkiv, Kherson, Khmelnytsky regions. III. Vinnytsia, Kirovohrad, Poltava, Sumy, Cherkasy and Chernihiv regions.


Author(s):  
John S Ji ◽  
Linxin Liu ◽  
Yi Zeng ◽  
Lijing L Yan

Abstract Forkhead Box O 3 (FOXO3) genotype is strongly associated with human longevity and may be protective against neurodegeneration. Air pollution is a risk factor for cognitive decline and dementia. We aimed to study the individual and combined effects of FOXO3 and air pollution on cognitive function in a large prospective cohort with up to 14 years of follow-up. We measured cognitive function and impairment using the Mini-Mental State Examination (MMSE). We used tagging SNPs rs2253310, rs2802292, and rs4946936 to identify the FOXO3 gene, of which roughly half of the population had the longevity associated polymorphism. We matched annual average fine particulate matter (PM2.5) concentrations within 1 km^2 grid. We conducted cross-sectional and longitudinal analyses using multivariable linear and logistic regression models and generalized estimating equation. At baseline, carriers of the longevity associated homozygous minor alleles of FOXO3 SNPs had a higher MMSE score than the carriers of homozygous major alleles. In the longitudinal follow-up, carriers of FOXO3 homozygous minor alleles had lower odds of cognitive impairment compared to non-carriers. Higher PM2.5 was associated with a lower MMSE score and higher odds of cognitive impairment. The positive effects of FOXO3 were the strongest in females, older people, and residents in areas with lower air pollution.


Agro Ekonomi ◽  
2013 ◽  
Vol 24 (1) ◽  
pp. 1
Author(s):  
Hani Perwitasari ◽  
Irham Irham ◽  
Jamhari Jamhari

The purpose of this research are (1) to identify changes in the structure of Indonesia’s economi, (2) to identifty backward linkage and forward linkage between agriculture sector eith other sctors in economic structure of Indonesia, (3) to know the multiplier effect of output, income, employment and grows value added of agriculture sector. The research analyzed Input-Output data, the domestic transaction based on producer price, that in classified 66 sectors published by the Cnetral Statistics Agency (BPS) uidng Input-Output Analysis.These result indicate that ini 1975 until 2008 the structure of Indonesia’s economy has changed towards industrialization. Backward linkage and forward linkage between the agriculture sectora are under the average backward linkage and the forward linkage of economy all sector in Indonesia. Multiplier effect to output, income, employment in the agricultural sector are the average of output multiplier effect income, employment sectors of the economy throughout Indonesia but the gross value added in above-average gross value added multiplier effects throught the economy of Indonesia. 


Sign in / Sign up

Export Citation Format

Share Document