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Introduction. The growth of production capacity of livestock enterprises results in increased environmental pressures on bio- and agrocenoses, created by potential energy carriers, one of which is liquid pig manure. Representative parameters, which characterize the energy value, are the total content of nitrogen and its various forms N2 = 3...8 kg/m3; phosphorus oxide P2O5 = 3...6 kg/m3; potassium oxide K2O = 2...4 kg/m3; chemical oxygen consumption to the mass of organic matter 1.2, biochemical 0.42. In parallel, the groups of Escherichia coli, staphylococci, enterococci, aerobic spore-forming microorganisms, various forms of eggs, protozoan cysts and Eimeria oocysts are also the environmental burden. In addition, the physical and rheological properties of liquid manure can have a significant impact on energy efficiency and the way of its further utilization. In terms of agricultural chemistry, the most rational option for its utilization is fractional use in the form of organic fertilizer that is possible only under the conditions of sanitary and epidemiological safety, which is an energy-intensive process depending on various factors. The purpose of this study is to develop a conceptual model of the energy efficiency of operational impacts in obtaining an environmentally safe cycle of utilizing liquid pig manure. Materials and Methods. The object of the study is the operational impacts in obtaining an environmentally safe cycle of utilizing liquid pig manure; the subject is the function of maximizing the energy efficiency of this object under the conditions of sanitary-epidemiological and agrochemical restrictions. There is conducted the analysis of factors and their categorization depending on the type of functional impact. Results. A conceptual model of operational impacts in producing environmentally safe liquid pig manure has been developed, which determines the components of specific energy consumption, the factors affecting them, and the restrictions imposed on them. This model is the source data for the factor analysis and statistical models. Discussion and Conclusion. The practical significance of the work is the identification and categorization of factors depending on the type of functional impact on the operations of the preparatory cycle of ecologically safe utilization of pig manure that can provide initial data for developing specific research methods and statistical models.
Introduction. The growth of production capacity of livestock enterprises results in increased environmental pressures on bio- and agrocenoses, created by potential energy carriers, one of which is liquid pig manure. Representative parameters, which characterize the energy value, are the total content of nitrogen and its various forms N2 = 3...8 kg/m3; phosphorus oxide P2O5 = 3...6 kg/m3; potassium oxide K2O = 2...4 kg/m3; chemical oxygen consumption to the mass of organic matter 1.2, biochemical 0.42. In parallel, the groups of Escherichia coli, staphylococci, enterococci, aerobic spore-forming microorganisms, various forms of eggs, protozoan cysts and Eimeria oocysts are also the environmental burden. In addition, the physical and rheological properties of liquid manure can have a significant impact on energy efficiency and the way of its further utilization. In terms of agricultural chemistry, the most rational option for its utilization is fractional use in the form of organic fertilizer that is possible only under the conditions of sanitary and epidemiological safety, which is an energy-intensive process depending on various factors. The purpose of this study is to develop a conceptual model of the energy efficiency of operational impacts in obtaining an environmentally safe cycle of utilizing liquid pig manure. Materials and Methods. The object of the study is the operational impacts in obtaining an environmentally safe cycle of utilizing liquid pig manure; the subject is the function of maximizing the energy efficiency of this object under the conditions of sanitary-epidemiological and agrochemical restrictions. There is conducted the analysis of factors and their categorization depending on the type of functional impact. Results. A conceptual model of operational impacts in producing environmentally safe liquid pig manure has been developed, which determines the components of specific energy consumption, the factors affecting them, and the restrictions imposed on them. This model is the source data for the factor analysis and statistical models. Discussion and Conclusion. The practical significance of the work is the identification and categorization of factors depending on the type of functional impact on the operations of the preparatory cycle of ecologically safe utilization of pig manure that can provide initial data for developing specific research methods and statistical models.
The paper highlights that the development of the forage base relies on crop cultivation technologies that ensure high productivity, meet the domestic market’s demand for high-quality feed, reduce labor costs and increase energy efficiency in feed preparation and storage. (Research purpose) The paper aims to conduct a comparative assessment of the technical and economic indicators of traditional, intensive, and high technologies, as well as machine complexes, for forage crop production. (Materials and methods) The study is based on scientific publications from 2011 to 2022 that focus on the improvement of natural lands for forage crop production, as well as on analytical and information materials, and other available sources. For a comprehensive technical and economic assessment of traditional, intensive and high-intensity technologies, as well as machine complexes used in forage crop production, the following indicators are selected: labor costs, fuel consumption, metal usage, and specific energy consumption. (Results and discussion) The study is conducted using the VIM methodology. A classifier of agricultural technologies is proposed to assess the technical and economic indicators of various types of agricultural machinery. The study results in the development of technological schemes for the reclamation of overgrown lands, the radical and surface improvement of herbage species composition and the radical improvement of herbage species composition in cultivated and natural forage lands. Additionally, the efficiency coefficient of energy consumption for the compared technologies across different soil and climatic zones are calculated. (Conclusions) A comparative analysis of the technical and economic indicators of machine complexes, including both traditional and advanced multifunctional systems, enables the recommendation of optimal solutions for forage production based on land productivity. The most resource-efficient option for producing a unit of output is achieved through the implementation of high technologies for improving forage lands.
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