ISSN 2284-7995, ISSN Online 2285-3952
 

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3
Written by Tarek FOUDA, Abd-Elrahman ELRAYES, Abd-Elhameed ELHANAFY

The experiment was established at an earthen aquaculture private farm in Kafrelshikh Government, Egypt. During 2021. To study the effect of operational variables at tube diffusion aeration system on turbidity values corresponding to Secchi disk clarity. Experimental variables under study were five air flow rates (0.1, 0.18, 0.23, 0.28 and 0.33 m3.h-1), three tube wall thickness (4, 6 and 7 mm), three tube depth from water surface (0.3, 0.50 and 0.70 m) and two design shapes for aeration system (circular and Longitudinal). Aeration system consist of circular tube holder, an electric single-phase compressor, three models of rubber diffusion tubes (D25-4, D25-6 and D25-7), portable galvanic dissolved oxygen meter, Secchi disk, digital LCD anemometer and thermometer and digital vernier. The results showed that, the lowest value for Secchi disk clarity were 7 cm obtained at operational conditions of 0.33 m3.h-1 air flow rate, 0.70 m depth from water surface, 4 mm thickness of tube wall and circular shape design. While, the highest value for Secchi disk clarity were 41 cm obtained at operational conditions of 0.10 m3.h-1 air flow rate, 0.30 m depth from water surface, 7 mm thickness of tube wall and Longitudinal shape design. The permissible variables limits were (0.1, 0.18 and 0.23 m3.h-1) for air flow rate, (4, 6 and 7 mm) for tube wall thickness, (0.3, 0.50 and 0.70 m) for tube depth from water surface and both of (circular and Longitudinal) design shapes.

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FOUDA T., ELRAYES A.E., ELHANAFY A.E. 2022, A STUDY ON MICRO BUBBLES AERATION METHOD ON WATER TURBIDITY AT AQUACULTURE EARTHEN PONDS UNDER DIFFERENT OPERATIONAL PARAMETERS. Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3, PRINT ISSN 2284-7995, 215-222.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3
Written by Maroš VALACH

This paper focuses on evaluation of agri-environmental indicators at regional level in the Slovak republic. Parts of the territory that have characteristics in terms of agro-ecological landscape infrastructure, generating various public goods and externalities, have been identified. For following public goods: landscape formation, biodiversity, quality and availability of water resources, soil quality, air quality, climate stability and flood prevention, we have identified and quantified indicators that reflect the benefits provided by different types of landscape space, agricultural land or farming practices. The analysis showed a strong polarization based on the natural conditions that determine the production conditions.

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VALACH M. 2022, ANALYSES OF AGRI-ENVIRONMENTAL INDICATORS AT REGIONAL LEVEL IN THE SLOVAK REPUBLIC. Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3, PRINT ISSN 2284-7995, 783-794.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3
Written by Tetiana SHMATKOVSKA, Tetiana KULINICH, Mykola DZIAMULYCH, Svitlana ROGACH, Andrii BILOCHENKO, Olena SERDIUKOVA

In the article we study the specifics of assessing investment activity in the agricultural sector of Ukraine's economy in terms of ensuring high efficiency of state regulation in this area. We have identified and substantiated the need for the use of special indicators to assess the impact of public policy on the investment process in agriculture in general and on the investment policy of agricultural producers. It is determined and substantiated that the most significant influence on the regulation of investment activity in the agricultural sector of Ukraine is exerted by the volume of state funding of investment management bodies and the level of financial incentives for investment. According to the results of the study, we substantiated the need to increase the efficiency of reforming the agricultural sector of Ukraine and the need and attraction of additional investment resources to ensure the implementation of the process of improving the functioning of agricultural producers in Ukraine.

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SHMATKOVSKA T., KULINICH T., DZIAMULYCH M., ROGACH S., BILOCHENKO A., SERDIUKOVA O. 2022, ANALYSIS OF INVESTMENT EFFICIENCY IN THE AGRICULTURAL SECTOR OF UKRAINE ON THE BASIS OF SUSTAINABLE DEVELOPMENT. Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3, PRINT ISSN 2284-7995, 649-658.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3
Written by Osman Fatih YAĞIZ, Mevlüt GÜL

This study aimed to determine the socio-economic structure of farms producing anise and analyse the cost and profitability of anise production. The marketing structure has also changed with the changing trade and agricultural policies. As a result of these changes, price instability has been experienced in the anise market. Anise is an essential source of income in the research region. The research area is Burdur province because Burdur province has an important position in Turkey's anise production. The data were obtained by survey method from 159 anise farms. The production cost in anise production was determined as 739.33 TRY per unit area (Gross Production Value (GPV) 1,224.27 TRY, gross profit 635.38 TRY, and relative profit were 1.66. The Total Cost/GPV ratio was calculated as 0.60. In recent years, significant reductions in anise production in the region and increased cultivation areas in other provinces; fluctuations and volatility in anise producer prices substantially impacted these decreases. It is essential to provide anise-specific support and carry out extension activities about anise to producers through relevant institutions. To prevent price instability, institutions such as TEKEL and the TMO, which had a decisive influence on the anise market in previous years, were significant. It seems very difficult for such institutions to operate again. It is recommended that anise producers establish organisations to act together to eliminate the problems of anise producers and eliminate price instabilities specific to anise.

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YAGIZ O.F., GUL M. 2022, ANALYSIS OF PRODUCTION COST AND PROFITABILITY OF ANISE PRODUCTION IN BURDUR, TURKEY . Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3, PRINT ISSN 2284-7995, 807-818.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3
Written by Alexandru TCACI

Investigations results about agricultural enterprises performances analysis within profitability rates in dynamic and factorial aspects are presented in this article. Quantitative influence on modification of consumed resources profitability rate of sold agricultural products structure, unit cost, average selling price was calculated. Results of factorial analysis show decisive influence of cost per unit of agricultural goods on the decreasing of return rate of consumed resources. This negative influence is explained by excessive growth of prices on fuel, fertilizers and pesticides.

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TCACI A. 2022, ANALYSIS OF PROFITABILITY IN THE RESEARCH OF ECONOMICAL ENTERPRISES PERFORMANCES . Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3, PRINT ISSN 2284-7995, 759-766.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3
Written by Cătălin Viorel POPESCU, Mirela PARASCHIVU, Gheorghe MATEI, Călin SĂLCEANU, Elena ROȘCULETE

Drifting is a global issue worldwide and consists in the application of crop protection products or other sprayed materials away from the target area, leading to substance loss, possible damage to nearby crops and plants and pollution of local surface waters. Without the use of anti-drift agents, drift-reducing nozzles or other drift-reducing techniques, spraying fertilizers, herbicides and pesticides in general would be ineffective. Thus, crop protection effect is reduced and waste, which can result in lower incomes for farmers and higher costs for food consumers. Concrete solutions to reduce drifting and waste of crop protection products are necessary and require focus on specific particularities. The present research should increase the interest for multifaced solutions to reduce drifting. In this light the purpose of this review considers the most important data and relevant literature on this topic in order to offer significant insights and to identify knowledge gaps within literature. Thus, short- and long-term solutions refer to proper identification of the best agents that can be used for anti-drift technology. Without the use of anti-drift agents, drift-reducing nozzles or other drift-reducing techniques, spraying fertilizers, herbicides and pesticides in general would be ineffective. The anti-drift market is at a very early stage due to the lack of user education and lack of high-quality research.

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POPESCU C.V., PARASCHIVU M., MATEI G., SALCEANU C., ROSCULETE E. 2022, ANTI-DRIFT TECHNOLOGY: MARKET, FORMULATION, APPLYING METHODS. Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3, PRINT ISSN 2284-7995, 581-588.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3
Written by Borislav ATANASOV

Foodstuffs have a strong presence in the daily lives of households. As a rule, consumers make purchases taking into account the prices of goods and the income they can spend on a purchase. Food prices are not constant, but a dynamic quantity. Based on the data of the National Statistical Institute of Bulgaria, it has been established that household expenditure for foodstuffs amounts to about 30% of total consumer expenditure. The main objective of this study is to track the dynamics of price changes overall as well as by groups of foodstuffs in Bulgaria, the dynamics of the changes of the total consumer income and of the consumer expenditure for the purchase of foodstuffs, and their influence on end consumers’ behaviour. Based on the data available at the National Statistical Institute of Bulgaria, the article presents the consumer price index, the indices of the total consumer income and of the total consumer expenditure of households for the period 2015-2021. A comparison has been made between the general price index and the index of the prices of foodstuffs and soft drinks. An analysis of the indices of the prices of individual groups of foodstuffs has been carried out. On the basis of quantitative research carried out by the author by using an online survey, aspects of consumer attitudes are revealed that are based on price influence upon purchase. One-dimensional frequency distributions were used for this purpose.

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ATANASOV B. 2022, ASPECTS OF THE INFLUENCE OF PRICES ON CONSUMER BEHAVIOUR WHEN PURCHASING FOODSTUFFS: ANALYSIS OF CASES FROM SOFIA, BULGARIA. Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3, PRINT ISSN 2284-7995, 43-48.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3
Written by Ionela Mițuko VLAD, Ana Cornelia BUTCARU, Mariana BURCEA, Irina CHIURCIU, Elena TOMA, Tudor STANCIU

The present work proposes as an area of analysis the apple sector and the characteristics of apple consumption in Romania. For this, a theoretical and applied documentation of different approaches in specialized works was made. A series of themes and methods used were identified. In our article we addressed the descriptive analysis of the data procured from national and international databases. The results were presented in the form of tables, graphs and figures. Thus, we were able to note the fact that Romania is part of the top five European countries producing apples, owning areas and an important number of orchards. In order to complete the study and obtain some results on the consumption of apples in Romania, we applied a questionnaire, to which 663 valid answers were obtained, they showed us a complex profile of consumers of fresh apples in our country.

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VLAD I.M., BUTCARU A.C., BURCEA M., CHIURCIU I., TOMA E., STANCIU T. 2022, ASSESSING THE APPLE SECTOR IN ROMANIA AND INSIGHTS ON THE CONSUMPTION. Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3, PRINT ISSN 2284-7995, 795-806.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3
Written by Mary Cris F. PLEÑOS

This paper examines the production of abaca fiber in the Eastern Visayas region. The buying prices of abaca fiber and the agricultural land area planted with abaca were also assessed. The goal of this study is to identify abaca production gaps and develop policies to improve the abaca sector in the region. According to the findings, abaca fiber production varies across Eastern Visayas provinces starting from 2010 to 2020. Natural disasters like typhoons and the bunchy top virus damaged the abaca fiber production. The agricultural land area cultivated with abaca is decreasing with time and there has been a considerable difference in the buying price of abaca fiber across the provinces. With this, the local government units must conduct proper monitoring on the buying prices of abaca fiber, improved extension services must be made available, provision of incentives and partnerships must be strengthened to enhance the quantity of abaca fiber production in the region.

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PLENOS M.C.F. 2022, ASSESSMENT OF ABACA FIBER PRODUCTION IN EASTERN VISAYAS PROVINCES, PHILIPPINES . Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3, PRINT ISSN 2284-7995, 493-496.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3
Written by Ancuța MARIN, Petruța TUREK-RAHOVEANU, Rozi BEREVOIANU, Vili DRAGOMIR

Romania ranks third in the hierarchy of vegetable growing countries in Europe. This study focuses on the determinants of the decision to buy fresh and canned vegetables and on the satisfaction of buyers on these purchases. The quantitative survey was used as a method of collecting information, and the investigation technique was used as an investigation technique, structured in the form of an opinion poll. The opinion poll applied is a questionnaire-based survey that provided information on the situation of vegetable consumers and the change in consumption behavior caused by the COVID -19 health crisis. Most respondents prefer buying directly from the market, buying between 1-3 kg per purchase. If in previous years taste and provenance were the basic criteria in the purchase of vegetables, the economic crisis caused by the health crisis COVID-19, brought the price in the first place, due to the decrease of buyers' incomes or other financial problems. The need for consumption/family, however, did not suffer, the quantities purchased being comparable to those of previous years, buyers turning to vegetables with a low degree of perishability. The study provides results on consumers' criteria for selecting vegetables and their hierarchical changes during the COVID-19 health crisis.

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MARIN A., TUREK-RAHOVEANU P., BEREVOIANU R., DRAGOMIR V. 2022, CHANGES IN THE BEHAVIOR OF VEGETABLE CONSUMERS IN BUCHAREST AND THE NEIGHBORING AREAS CAUSED BY THE COVID-19 CRISIS . Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 3, PRINT ISSN 2284-7995, 411-418.

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The publisher is not responsible for the opinions published in the Volume. They represent the authors’ point of view.

© 2019 To be cited: Scientific Papers. Series “Management, Economic Engineering in Agriculture and Rural Development“.

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