ISSN 2284-7995, ISSN Online 2285-3952
 

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1
Written by Ovidiu EREMI, Florin SALA

The study evaluated the possibility of using a plant extract in the perspective of alternative plant cultivation technologies. An extract based on the herba (Urtica dioica L.) was used in aqueous solution, in a ratio of 1:10. Foliar treatment solutions were prepared from the base solution (UdE) with concentrations of 25% (V2), 50% (V3), 75% (V4) and 100% (V5), which were tested together with a control variant (V1). The biological material was represented by the Mureșana oat variety. The prepared solutions were applied in four treatments, on consecutive days, the first treatment at the stage of 4-5 leaves (15-19 BBCH code). The effect of the treatments on some biometric and plant productivity parameters was evaluated: plant height (PH), stem diameter (SD), root length (RL), plant weight (PW), root weight (RW), panicle length (PL), number of branching levels (NBL), and distance between branching levels (DbBL). Very strong correlations were recorded between SD and UdE (r=0.969), between PW and UdE (r=0.947), between RW and UdE (r=0.976), between PH and RL (r=0.961), between PW and SD (r=0.974), between RW and SD (r=0.945) and between PW and RW (r=0.951). Biometric parameters of the plants were taken into account, and based on the regression analysis it was possible to estimate with high precision the panicle length (PL) depending on the biometric parameters RL, PW and RW (p=0.0042, RMSE=1.85750), parameters which showed a close correlation with the extract concentration (UdE) applied (r=0.707 in the case of RL; r=0.947 in the case of PW; r=0.976 in the case of RW).

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EREMI O., SALA F. 2023, NATURAL EXTRACTS AS ALTERNATIVE ELEMENTS IN PLANT CULTIVATION TECHNOLOGIES. CASE STUDY IN OATS. Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1, PRINT ISSN 2284-7995, 193-202.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1
Written by Alexandra-Mihaela NAGY, Monica POPA, Camelia SAVA SAND

Due to the interest shown in our country regarding the cultivation and marketing of purple flesh potatoes, we set ourselves the problem of examining the aspects that facilitate in vitro cultivation and obtaining micro tubers that ensure the faster micropropagation of purple potato varieties, formations that in modern food are also consumed raw. The paper aimed to present the protocol for obtaining vitro tubers or also called micro tubers from two varieties of potato: Christian with regular colour of flesh and Salad Blue with purple flesh. This protocol is based on micropropagation technique which combine an agar-solidified phase succeeded by a liquid phase in the same vessel in aseptic conditions. Using the double-phase technique gave the opportunity to reduce the costs generated by the utilities.

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NAGY A.M., POPA M., SAVA SAND C. 2023, OBTAINING VITRO TUBERS OF WHITE AND PURPLE FLESH POTATOES IN ASEPTIC CULTURES OPERATED ON DOUBLE-PHASE TECHNIQUE. Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1, PRINT ISSN 2284-7995, 437-446.

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

Against the background of the scandals regarding the contamination of food with dioxin and nitrophenol, the Bovine spongiform encephalopathy (BSE - "mad cow" disease), the avian and swine flu, the infection of some vegetables with the enterohemorrhagic strain of the bacterium Esterichia coli (EHEC), as well as the fears regarding the use of genetically modified organisms, the request of agricultural products and ecological food increased a lot at the beginning of this millennium. An opportunity for the transition from subsistence agriculture to an agriculture based on economic principles is represented by systems of exploiting poultry on the ground, with free access to outdoor paddocks, as well as ecological growth. In this context, the present paper tries to bring to the fore some opportunities in the organic breeding of some poultry with a special taste, such as capons. The main objectives followed were: some historical landmarks regarding the growth of capons; the review of the practical elements of capon growing and some case studies that show the opportunity of capon growing in Romania for a successful business. The used methods included searching of the various databases with the latest publications in the field and identification of some relevant results. The breeding of capons represents an opportunity for Romanian farmers who want a profitable business, especially since currently, in Romania, the number of such micro-farms is very limited.

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BONCIU E. 2022, OPPORTUNITIES IN ORGANIC BREEDING OF CAPON POULTRY AND SUSTAINABLE FARM MANAGEMENT . Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 4, PRINT ISSN 2284-7995, 117-122.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1
Written by Uğur SAGLAM, Nizamettin ERBAS, İ. Hakkı İNAN

This paper reviews the organizational awareness and marketing preferences of members of producer organizations in agriculture. The main material of this research consisted of surveys applied to 360 producers determined via the Proportional Sampling Method in Uşak province, Turkey. According to the research results, each of the producers was a member of at least one Producers' Organization (PO). 59.1% of producers were interested in the PO, and 33.6% of them think that crops should be marketed by the Agricultural Development Cooperative. The ratio of member producers marketing their products through the POs was 19.7%. Only 38.4% of members were satisfied with the selling price of products. The POs in the region were generally successful, and the most successful one was also the Agricultural Development Cooperative with 72.3%. In the study, marketing prices, satisfaction with being a member of the POs, and satisfaction with the organizational management variables were tested by the Chi-square, and it was viewed that there was no significant difference among them. The study is important in increasing the effectiveness of the POs in all areas of agriculture and improving the organizational awareness of their members.

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SAGLAM U., ERBAS N., INAN I.H. 2023, ORGANIZATIONAL AWARENESS AND MARKETING PREFERENCES OF MEMBERS OF AGRICULTURAL PRODUCER ORGANIZATION: THE CASE OF TURKEY . Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1, PRINT ISSN 2284-7995, 691-700.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1
Written by Paula STOICEA, Elena TOMA, Livia DAVID, Andreea-Raluca CONSTANTIN, Andra BUDILEANU

This paper explores the profitability of large-scale agricultural companies in Romania in terms of land area under cultivation, i.e., companies with over 2,000 hectares and legally organised as limited liability companies paying corporate tax. The research is based on the financial results account, in which the information is structured by activity, and covers both the cultivation and financial activity, and allows the determination of potential cash accumulation balances, useful in showing how the factors of production involved are remunerated and how the agricultural activity yields financial resources, indicators known as interim management statements. The details of these accumulation balances are shown in the profit and loss statement by: 'trade margin’, 'production of the financial year, 'value added’, 'gross operating surplus’, 'operating profit’, 'financial result’, 'gross result for the year’ and 'net result for the year’. Thus, the interim management statements (IMS) as successive fractions in establishing the final result, are determined in cascade, starting from the most comprehensive, i.e., the trade margin and the production of the financial year, and ending with the net result for the year, which summarises the process of the profit or loss from an unprofitable activity, also specifying how the managerial activity of the company was carried out at each level of accumulation.

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STOICEA P., TOMA E., DAVID L., CONSTANTIN A.R., BUDILEANU A. 2023, PERFORMANCE OF LARGE AGRICULTURAL COMPANIES IN ROMANIAN AGRICULTURE. Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1, PRINT ISSN 2284-7995, 773-782.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1
Written by Vladimir Alekseevich VYTOVTOV, Anastasia Viktorovna PRUSHCHIK, Alexey Vladimirovich VYTOVTOV, Denis Sergeevich KOROLEV

The purpose of the research is to justify the method of physical modeling of sprinkling for the study of water-induced soil erosion. The paper presents technical solutions for the laboratory installation that provide modeling of natural precipitation. The research deals with the method of sprinkling runoff sites based on the criteria of similitude using a portable sprinkler. The results of the experiments to study soil absorbing capacity, removal of chemical elements, cumulative soil washout for various degrees of protective plant cover were obtained. The criteria of similitude allow to use the data obtained during sprinkling run off sites for modeling natural rains. The advantages of the proposed sprinkling plant and examples of its use in the field are presented.

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VYTOVTOV V.A., PRUSHCHIK A.V., VYTOVTOV A.V., KOROLEV D.S. 2023, PHYSICAL MODELING OF WATER EROSION ON SLOPING LANDS IN AGRICULTURAL COMPLEXES . Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1, PRINT ISSN 2284-7995, 881-886.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 4
Written by Ferda Nur ÖZDEMİR, Haluk Çağlar KAYMAK, Adem AKSOY

Turkey is one of the most important hazelnuts and pistachio producers in the world. In this study, it has been determined what kind of volatility and pass-through there is between the real prices of almonds, hazelnuts, and pistachios in Turkey. In addition, whether a shock in the markets creates uncertainty in its own market and other markets have been revealed. Diagonal-Bekk Garch (1,1) model was used under the Full-rank constraint with 192 monthly data sets between the period 2005M1-2020M12. The results of the research have put forth that the shocks that will occur in the almond market increase the uncertainty in its own market. Similarly, a shock in the hazelnut market increases the uncertainty both in its own market and in the pistachio market, while a shock in the pistachio market increases the uncertainty in its own market. Moreover, the shocks in the almond and hazelnut market are permanent in these markets in the short and long term, but the shocks in the pistachio market do not have a permanent effect in the short and long term.

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OZDEMIR F.N., KAYMAK H.C., AKSOY A. 2022, PREDICTION OF CONDITIONAL VARIANCE VOLATILITY OF REAL PRICES OF ALMOND, HAZELNUT, AND PISTACHIO BY THE DIAGONAL BEKK-GARCH (1.1) EQUATION MODEL . Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 4, PRINT ISSN 2284-7995, 517-526.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 4
Written by Slavica ARSIC, Predrag VUKOVIC, Nataša KLJAJIC, Marice RAKIN, Gordana KOKEZA, Maja BULATOVIC

Due to the fact that individual whey proteins have their own unique nutritional, functional and biological characteristics, the latest research in this area draws attention to the possibility of synthesizing a wide range of bioactive compounds derived from whey proteins. There are various ways to release bioactive peptides from precursor proteins or whey parent proteins. The paper will present the production of bioactive whey protein hydrolyzates (BHPS), which exhibit high antioxidant activity, and their economic profitability of production. Research is focused on the enzymatic and microbiological process of modifying whey proteins. Whey proteins can be easily modified under mild conditions of temperature and Ph values. For the purpose of this research, two scenarios were modeled: Scenario A, which involves the use of whey, and Scenario B, which involves the use of whey protein concentrate as a protein source. The entire process for both scenarios, which includes pre-treatment, whey protein modification and product separation, was modeled using the SuperPro Desinger program, which is equipped with a wide range of processes, and can be used for mathematical evaluation of the economic performance of the process.

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ARSIC S., VUKOVIC P., KLJAJIC N., RAKIN M., KOKEZA G., BULATOVIC M. 2022, PRODUCTION AND COSTABILITY ANALYSIS OF BIOACTIVE HYDROLYZATES OF WHEY PROTEIN. Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 22 ISSUE 4, PRINT ISSN 2284-7995, 89-94.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1
Written by Ivan PRYMAK, Mykola GRABOVSKYI, Yriy FEDORUK, Mykola LOZINSKYI, Taras PANCHENKO, Lyudmyla YEZERKOVSKA, Aleksandr PANCHENKO, Vitalina KARAULNA, Igor POKOTYLO, Nataliia PRYSIAZHNIUK, Svetlana HORNOVSKA, Lidia SHUBENKO

Five-year (2017-2021) studies on a typical deep low-humus black soil at the experimental field of Bila Tserkva National Agrarian University found that the yield of winter wheat and spring barley was almost at the same level with mouldboard and differentiated tillage in the five-field crop rotation. The research was conducted by the method of field stationary experiment. All crop rotation fields are fully deployed in space and time. The area of sown plots was 171 m2, accounting area – 112 m2. Repetition – three times, placement of repetitions and plots was consistent, systematic. In the tillering phase of winter wheat and spring barley, mouldboard-mouldboardless tillage had the advantage of arable layer moistening. When sowing white mustard, the most moisturized soil layers were under differentiated tillage, the least moisturized – under mouldboardless tillage. The dry mass of root residues of winter wheat was the highest under mouldboard, spring barley – under mouldboard-mouldboardless tillage, and white mustard was almost the same under these cultivation options. Grain yield was at the same level under mouldboard and differentiated tillage. The green mass of white mustard applied in the soil was significantly more under the differentiated tillage and predecessor of spring barley. The highest indicators of economic and energy efficiency were obtained by applying 12 tons of manure + N95P82K72 per hectare of arable crop rotation land (including per winter wheat N125P90K70, spring barley N60P50K50, white mustard N15P15K15) and carrying mouldboard-mouldboardless tillage in crop rotation, which involves deep cultivation of 25-27 cm in only one field, and the rest of the fields – mouldboardless and disk shallow tillage.

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PRYMAK I., GRABOVSKYI M., FEDORUK Y., LOZINSKYI M., PANCHENKO T., YEZERKOVSKA L., PANCHENKO A., KARAULNA V., POKOTYLO I., PRYSIAZHNIUK N., HORNOVSKA S., SHUBENKO L. 2023, PRODUCTIVITY OF GRAIN EAR CROPS AND POST-HARVEST WHITE MUSTARD ON GREEN FERTILIZER DEPENDING ON THE SYSTEMS OF SOIL BASIC TILLAGE IN THE FOREST STEPPE OF UKRAINE . Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1, PRINT ISSN 2284-7995, 669-682.

Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1
Written by Mykola POVOD, Oleksandr MYKHALKO, Tetyana VERBELCHUK, Bogdan GUTYJ, Valeriy BORSHCHENKO, Vira KOBERNIUK

The article describes the results of studying the interdependence between indicators of reproductive qualities of sows, indicators of growth of pigs, during fattening. In addition, the results of the experiment determined the dependence of the level of fatness of piglets on the term of their suckling period. It was proven that when the duration of lactation is reduced by 7 days, their preservation improves, due to which their number in the nest before weaning increases. At the same time, in the case of premature weaning of piglets, no difference was found with sows with the traditional duration of the suckling period in terms of the total number of piglets born, multifertility, high fertility and litter weight of piglets at birth. While the shorter period of lactation of sows led to a decrease in the growth intensity of piglets in the post-weaning period and to a decrease in the absolute growth and individual weight of piglets and the weight of their nests at weaning. When piglets were weaned earlier from sows, they exhibited lower growth intensity during rearing, consumed relatively less feed, and had poorer payment for feed in the form of gain and consequently lower weight at the end of the rearing period compared to counterparts with a traditional duration of the suckling period. At the same time, no significant difference was found between piglets of the control groups in the parameters of piglet survival and absolute growth. The fattening qualities of pigs did not depend on the length of their suckling period. A 7-day reduction in the lactation period contributed to a reduction in the duration of the reproductive cycle from 150 to 143 days. This made it possible to obtain 0.12 more farrowings from each sow per year and to use each pen for farrowing sows 25.3% more often. What made it possible due to the intensification of the use of farrowing space, the intensification of the use of the sow and the reduction of the feed cost of her maintenance to obtain additional cost savings per sow during the year.

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POVOD M., MYKHALKO O., VERBELCHUK T., GUTYJ B., BORSHCHENKO V., KOBERNIUK V. 2023, PRODUCTIVITY OF SOWS, GROWTH OF PIGLETS AND FATTENING QUALITIES OF PIGS AT DIFFERENT DURATIONS OF THE SUCKLING PERIOD . Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 1, PRINT ISSN 2284-7995, 649-658.

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

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