ISSN 2284-7995, ISSN Online 2285-3952
 

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 4
Written by Sunday Brownson AKPAN

The study examined the contributions of sub-units of the crop subsector to the economic development of Nigeria (approximated by the per capita GDP (PCI)) from 1962 to 2020. The Autoregressive Distributed Lag Model (ARDL) was used to establish the existence of the cointegration among the specified series. The findings revealed that, the sub-components of the crop sub-sector co-integrate with the per capita GDP in the long run. The empirical results further revealed that in the short run, sugar-based crops gross production, vegetable, and fruit gross production have a significant relationship with the PCI in Nigeria; whereas the cereal gross production, oil-based crop gross production, sugar crop gross production, and vegetable and fruit gross production were long run significant determinants. The findings call for appropriate short and long-term economic policy packages that should stimulate investment opportunities in the crop sub-sector to increase the sub-sector’s productivity for greater economic development stimulation.

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AKPAN S.B. 2022, CONTRIBUTION OF THE CROP SUB-SECTORS’ PERFORMANCE TO THE ECONOMIC DEVELOPMENT OF NIGERIA: THE ARDL MODEL APPROACH . Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 4, PRINT ISSN 2284-7995, 39-48.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1
Written by Nataliia SHYIAN, Olena KOVALYOVA, Valentyna MOSKALENKO, Irina MURENETS, Sviatoslav KNIAZ

It was established that there is a close relationship between the level of costs and the yield of crops. At the same time, there is a manifestation of the law of diminishing returns, which leads to a drop in the level of profitability and profitability of production with an increase in the level of costs. The construction of the dependence of the paired regression of productivity-costs-profit, productivity-costs-level of profitability was carried out. The value of the coordinates of the point of intersection of the dependence of the profit and costs on the productivity of wheat, corn for grain, and sunflower was determined. The economic meaning of the obtained coordinates will be that with a given increase in X (yield), the amount of profit per 1 ha of the sown area will exceed costs per unit of land area following the established dependencies. It is proposed to determine the economic efficiency index of crop production intensity. The calculation of this index made it possible to establish that it was on average 4.506 for sunflower, 2.500 for wheat, and 2.102 for corn. For the first time, the influence of the index of economic efficiency of the intensification of the production of individual crop on the level of their profitability was evaluated. It was established that this rela was non-linear for wheat and sunflower, and linear for grain corn. The practical significance of the obtained results is that the optimal values of the index of economic efficiency and production intensification were determined for sunflower and wheat.

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SHYIAN N., KOVALYOVA O., MOSKALENKO V., MURENETS I., KNIAZ S. 2023, COST EFFICIENCY IN THE PRODUCTION OF CROP PRODUCTS AS A FACTOR OF FORMATION OF COMPETITIVENESS IN INTERNATIONAL MARKETS. Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1, PRINT ISSN 2284-7995, 719-732.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 4
Written by Oleg OSINNII, OleksandrAVERCHEV, SergiyLAVRENKO, Pavlo LYKHOVYD

Phenological monitoring is a necessary part of crop production. Fertilization, plant care measures, irrigation scheduling and plant protection are closely related in their efficiency to timely and precise determination of certain phenological phases of the cultivated plants to ensure the best out pay of the technological operations. Phenological observations are usually time-consuming and require some extra expenditures due to the need to visit each field of a farm or agricultural holding and cross it several times to assess the growth and development of the cultivated plants on the large scale. Modern technologies, mainly remote sensing, provide an opportunity to estimate crops development both on the scale of a local field or whole farm in time-saving and cost-effective manner through vegetation indices. The purpose of this study was to determine the correspondence between the values of the normalized difference vegetation index and phenological phases of drip irrigation rice, cultivated in the south of Ukraine during 2016-2017, to ensure the possibility of remote phenological monitoring in such crops. As a result, the highest values of the vegetation index were determined to be recorded in the tillering-heading period, and usually coincides with the period of July. The determined rice vegetation patterns are not only for rice growers due to time and cost savings for crop phenological monitoring, but are also of great importance for intelligent agriculture in the sense of crop recognition automation and mapping.

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OSINNII O., O., S., LYKHOVYD P. 2022, COST-EFFECTIVE AND TIME SAVING METHOD OF PHENOLOGICAL MONITORING USING SATELLITE IMAGERY IN DRIP-IRRIGATED RICE. Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 4, PRINT ISSN 2284-7995, 511-516.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1
Written by Pompilica IAGĂRU, Mircea BOȘCOIANU, Ionel-Lucian CIOCA, Ioana Mădălina PETRE, Sebastian POP, Flavius Aurelian SÂRBU, Romulus IAGĂRU

The present attests to the development of autonomous unmanned aircraft systems and their widespread use in various fields. The article presents the level of development of mini UAVs, the rapid growth of their use in various fields and challenges for various civil applications. At the same time, current research trends are highlighted and future perspectives for use in precision horticulture are identified. For this, the research methodology used included both quantitative and qualitative methods of the type of secondary analysis of statistical data and specialized literature, respectively the SWOT analysis model, supplemented with the observation method. The realization of the study allowed to obtain an overview of the level of development of mini UAV and the possibilities of increasing the degree of use in various fields.

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IAGARU P., BOSCOIANU M., CIOCA I.L., PETRE I.M., POP S., SARBU F.A., IAGARU R. 2023, CRITICAL ANALYSIS OF MINI UNMANNED AERIAL VEHICLES (UAV) DEVELOPMENT CAPABILITIES AND PERSPECTIVES OF EFFECTIVE INTEGRATION IN HORTICULTURAL AGROECOSYSTEMS IN ROMANIA. Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1, PRINT ISSN 2284-7995, 293-302.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1
Written by Gulay OZKAN, Esra GEMEC, Ismail Bulent GURBUZ

Red meat consumption is vital for a balanced diet. This research examines the factors that cause consumers to prefer red meat, determines the shopping channels from which red meat is purchased, and the frequency and consumption of red meat. A face-to-face survey was applied to 273 households selected by simple random sampling. Data were analyzed using SPSS 23.0. The decisive factor in the participants' red meat preferences in the study was taste (61.5%), followed by production date (60.2%) and freshness (58.5%). According to this result, consumers were more pleasure-oriented in choosing red meat products. Advertising was the least important factor. 58.2% of the purchased red meat was from butchers, 10.6% from discount markets and 9.5% from local markets. Participants bought red meat several times a month (26.4% of them.) and consumed it several times a week (44.7%.) Half of the total meat consumed in the households was red meat. The purchasing and consumption frequency of red meat in the families in Bursa was low. Decreasing red meat prices will increase households' purchasing and consumption frequency. Farmers need a subsidy to lower production costs and increase productivity, thus reducing retail meat prices.

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OZKAN G., GEMEC E., GURBUZ I.B. 2023, CRITICAL FACTORS AFFECTING HOUSEHOLDS' RED MEAT CONSUMPTION IN TURKEY. Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1, PRINT ISSN 2284-7995, 503-514.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1
Written by Cristina TOȚA, Maria BALA, Florin SALA

This study evaluated the quality of rose flowers, based on the length of the floral stem, according to the cutting system, as a plant maintenance work. The researches were organized during 2017 - 2018 at the Teaching and Research Base of the University of Life Sciences "King Mihai I" from Timisoara. Six rose varieties were studied: Acapella (Aca), Barkarole (Bar), Double Delight (D De), Golden Elegance (G El), Lady in Purple (L Pu), and Pascali (Pas). Three cutting systems were performed, at two buds, at five buds, and at seven buds. The varieties Acapella, Barkarole and Golden Elegance provided flowers with a longer stem, and the varieties Double Delight, Lady in Purple and Pascali provided flowers with a shorter stem, in all three cutting systems. The system of cutting at two buds facilitated obtaining the longest flower stems (eg 118.00 cm for the Barkarole variety). On the basis of PCA (correlation), a diagram was resulted that contained the distribution of the experimental variants (represented by rose varieties) in relation to the cutting system (2; 5; 7 buds - as biplot). According to PCA, PC1 explained 93.597% of variance and PC2 explained 5.635% of variance. Cluster analysis generated a dendrogram of the variants association, based on the Euclidean distances, according to each cutting system (Coph.corr.=0.828 for cutting to 2 buds; Coph.corr=0.884 for cutting to 5 buds; Coph.corr=0.732 for cutting to 7 buds).

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TOTA C., BALA M., SALA F. 2023, CUTTING SYSTEM INFLUENCE ON THE QUALITY OF ROSE FLOWERS . Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1, PRINT ISSN 2284-7995, 811-818.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 4
Written by Mykola POVOD, Oleksandr MYKHALKO, OlgaKORZH, Bogdan GUTYJ, Olena MIRONENKO, Serhii VERBELCHUK, Vira KOBERNIUK, Olena TKACHUK

In order to study the dependence of the microclimate indicators in the fattening building on the frequency of drainage of manure pits and the external temperature, an experiment was conducted in the production conditions of the pig complex. Four groups of pigs with 2,500 heads in each group were selected for the experiment. In the first control group, the draining of the manure pits took place before the animals were placed for fattening and as the pits were filled. In the experimental groups, the pits were drained before planting and every 14 days in the second group, every 21 days in the third group, and every 28 days in the fourth group. Gas content and air humidity indicators were measured every third day at 07:00, 13:00 and 18:00 in all four buildings at 6 points in different equally spaced pens of the fattening building under the ventilation valves. It was found that the average concentration of hydrogen sulfide and ammonia depended on the frequency of emptying the pits in the building, while the content of carbon dioxide did not depend on it. The content of hydrogen sulfide and ammonia depended on the frequency of emptying manure pits, and the content of carbon dioxide did not depend. At the same time, the content of ammonia and carbon dioxide depended on the external temperature, while the content of hydrogen sulfide did not depend on it. The relative humidity in the fattening building increased with a decrease in the frequency of draining pits, however, it did not depend on the external temperature.

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POVOD M., MYKHALKO O., O., GUTYJ B., MIRONENKO O., VERBELCHUK S., KOBERNIUK V., TKACHUK O. 2022, DEPENDENCE OF THE MICROCLIMATE PARAMETERS OF THE PIG HOUSE ON DIFFERENT FREQUENCY OF MANURE PITS EMPTYING AND OUTDOOR TEMPERATURE . Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 4, PRINT ISSN 2284-7995, 603-616.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1
Written by Tarek FOUDA, Adel ABDRABO, Shimaa SALAH, Hamada MORGAN

The research aimed to design, simulate, analyze stresses then manufacture a rice transplanting machine with local materials suitable for small rice holdings. The machine was designed and the stresses were simulated by Solidworks software to ensure the integrity of the design before manufacturing themachine. The transplanting machine consists of several parts, the most important of which are: Main frame, seedlings mat, and power transmission system. The main frame and the seedlings mat were designed and stresses affecting it were simulated in order to make sure that the design is suitable for the loads placed on them. The power transmission system is one of the most important parts in the rice transplanting machine. It contains important three unit of shafts namely: the intermediate reduction unit shaft, the transplanting unit shaft, and the wheel axle unit shaft. The sprockets and rotation speed of power transmission system were determined and synchronized to achieve the desired forward speed of 1.00, 1.25, 1.50, and 1.75 km h-1 and achieve the recommended hill spacing of 16, 18, 20, and 22 cm.Also, the diameters of the transmission shafts were calculated based on the torsional moments exposed to them and the stresses on shafts were analyzed and simulated. The design results concluded that the shafts diameters were 25, 20 and 40 mm and the maximum von Mises stress recorded 6.75e+001,4.34e+001and 5.39e+001 MPa for the intermediate reduction unit shaft, the transplanting unit shaft, and the wheel axle unit shaft, respectively. From simulation results, it was concluded that this parts will not fail under the given stresses and the parts will not carry out any significant deformations according to the applied loading conditions then the machine was manufactured based on these results.

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FOUDA T., ABDRABO A., SALAH S., MORGAN H. 2023, DESIGN CONSIDERATIONS AND STRESSES ANALYSIS OF LOCAL RICE TRANSPLANTING MACHINE . Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1, PRINT ISSN 2284-7995, 211-222.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1
Written by Hilal ERDOĞAN, Alperen Kaan BÜTÜNER, Yavuz Selim ŞAHİN

Plant diseases are one of the leading causes of yield losses in agricultural areas. In the fight against these diseases, chemical control methods are frequently used. However, this method of combat usually begins after the disease has spread throughout the entire field. The most essential thing here is to control the disease before it spreads throughout the entire country. Thermal imaging methods can now be used to accomplish this. Plant diseases stress the plant as a result of infection. The plant's stress causes activities that cause a temperature increase or reduction in the area where the infection has occurred or has begun. Thermal imaging technologies can be used to identify this condition. This work focuses on the potential early detection of Cucurbit powdery mildew (Sphaerotheca fuliginea (Schlech.) Polacci), which causes considerable yield loss in Cucurbitaceae, utilizing thermal imaging technologies. According to the findings, the lowest temperature in infected leaf tissues was 8.2 °C, whereas the maximum temperature in plant tissues without infection was 10.2 °C. The findings suggest that thermal imaging technology could be used to identify powdery mildew in cucurbits. In this case, early detection will potentially enable the detection of the disease that has started to spread in a certain region and will allow the disease to be potentially controlled with less labor and chemical use.

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ERDOGAN H., BUTUNER A.K., SAHIN Y.S. 2023, DETECTION OF CUCURBIT POWDERY MILDEW, SPHAEROTHECA FULIGINEA (SCHLECH.) POLACCI BY THERMAL IMAGING IN FIELD CONDITIONS . Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1, PRINT ISSN 2284-7995, 189-192.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1
Written by Ahmed Olugbenga BUSARI, Munir Karounwi Adegoke WAHAB

Cashew is an emerging agricultural export crop in Nigeria. However, significant export earnings have not been recorded in recent years from cashew exports. The study investigated the determinants of the cashew nuts export supply in Nigeria between 1980 and 2019. Secondary data extracted from the publications of the Food and Agriculture Organization statistical database (FAOSTAT), the National Bureau of Statistics (NBS), and the Central Bank of Nigeria (CBN). Means, percentages, and coefficient of variations were the descriptive statistical tools used, while Augment Dickey-Fuller (ADF), Johansen co-integration and vector error correction model (VECM) were the inferential statistical tools employed in the study. ADF and Johansen's results show that the variables of the model were stationary after the first difference and co-integrated. Domestic production export supply and earnings fluctuated over the period of the study with a mean of 247,560.70 tonnes, 33,010.22 tonnes, and ₦47,462.43 million respectively. The average annual growth rate of cashew nuts production, export supply, and export earnings was 197.98 percent and 565.79 percent respectively VECM result reveals that domestic cashew nut production and exchange rate have asymmetric influence and cashew nuts export supply in the short run, while agricultural land area, cashew nuts production and inflation rate negatively influence cashew nuts export supply in the short run, but exchange rate positively influences cashew nut export supply in the long run. It is concluded that agricultural land area domestic production, of cashew nuts, exchange, and inflation rate significantly influence the export supply of cashew nuts in the study area. Thus, significant policy reform on the production of cashew nuts, exchange, and the inflation rate would improve exports supply of cashew nuts significantly.

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BUSARI A.O., WAHAB M.K.A. 2023, DETERMINANTS OF CASHEW NUTS EXPORTS SUPPLY IN NIGERIA (1980-2020) . Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1, PRINT ISSN 2284-7995, 81-88.

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

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