Ekonomsko-tehnološki parametri optimalnog korišćenja traktora

Ruzicic, Lazar; Petrović, Predrag; Gligorevic, Kosta; Oljaca, Mico; Ružičić, Tamara

doi:10.7251/agrsr1202259r

Cited by 4 publications

(4 citation statements)

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“…All the other costs were allocated based on empirical norms. The application of modern agricultural machinery and implements in crop production encompasses requisite parameters for the optimal exploitation of tractors or engine units [47].…”

Section: Methodsmentioning

confidence: 99%

Sustainable Organic Corn Production with the Use of Flame Weeding as the Most Sustainable Economical Solution

et al. 2021

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Flame weeding is an alternative method of weed control. Essentially, it is a supplement to other physical and mechanical processes used in organic production. Weed control costs have a large share of the total cost of crop production. This study aimed to investigate hand weed hoeing’s cost-effectiveness, accompanied by inter-row cultivation and flame weeding applied in organic maize production using two different machines to determine the economically best solution. For this purpose, the prototype flame weeder and commercial flame-weeding machinery were used. Designed primarily for smaller fields, the prototype flame weeder was equipped with a cultivator and a 70 kg propane bottle. Commercial Red Dragon flame weeder, fitted with an 800 kg propane tank and featuring no cultivation implements, is designed for larger areas. The analysis has shown that hand hoeing produced a higher yield (8.3 t/ha in total), but it contributed significantly to the production costs. The costs per hectare decreased when the prototype flame weeder and the commercial Red Dragon flame weeder were used compared to hand hoeing. More beneficial economic impacts were recorded when the prototype flame weeder was used (489.39 €/ha) than in applying the Red Dragon flame weeder (456.47 €/ha). The efficacy of flame weeding is somewhat limited and could be enhanced by additional hand hoeing, if the effect of the machine in terms of weeding is observed. However, the analysis has shown that, in this case, investments in additional hand hoeing are not economically justified because the operating costs incurred therein (168 €/ha) were not met by a yield increase of 500 kg/ha, i.e., a surplus revenue of 100 €/ha. Moreover, the economic impacts of flame weeding would be considerably more significant in larger fields.

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Section: Methodsmentioning

confidence: 99%

Sustainable Organic Corn Production with the Use of Flame Weeding as the Most Sustainable Economical Solution

et al. 2021

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“…Geothermal energy used for agri-food processes is divided into four groups: hydro geothermal energy from surface hot water sources, hydro geothermal energy from water vapor sources, hydro geothermal from hot water energy at great depths, and petroleum thermoelectric energy [29]. They have proven to be profitable in the sectors of processing foodindustries [30], through industrial processes and heating and cooling districts [31], reaching a global application of 5.5 % in greenhouses and open-air heating, 2.8 % in heating industrial processes, 2.7 % in heating ponds and aquaculture channels, and 0.4 % for agricultural drying for 2010 [7,32].…”

Section: Application Of Geothermal Energy In the Food Industrymentioning

confidence: 99%

Use of Geothermal Energy in the Food Industry: A Review

Vega

Ramos

Sarmiento

et al. 2022

rev.ing.univ.Medellin

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This paper aims to make a bibliographic literature review about the current and potential uses of geothermal energy within the food industry, which uses a third of the world’s energy during production in all the processes involved. Fossil fuels are the most common sources for generating electrical energy for the food industry. However, it is known that they cause adverse environmental effects such as atmospheric pollution, ecosystem disturbances and natural resource depletion. Due to the lack of published studies about this subject, this review was carried out using different databases. Of the 77 documents published between 2010 and 2020, more than 70 % of them were written in English by researchers from 67 institutions from around the world. These documents allow us to analyze a sample of countries where the implementation of geotermal energy has a greater advance in processes implementing geothermal energy in the food industry; such as heating and cooling systems for the drying of fruits and vegetables, and producing various foods, achieving energy coverage close to 10 % in this industry.

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“…Due to the absence of specific, primary data for Miscanthus cultivation in Serbian agricultural conditions, secondary data were used (data from scientific and technical publications, reports, data obtained in communication with relevant scientific institutions, etc.) [50][51][52][53][54][55][56][57][58][59][60][61][62]64,77]. The selection of agricultural machinery is carried out on the basis of an analysis of available data on most commonly used machines for specific agricultural operations in Serbia.…”

Section: Inputs: Machinery Used Fuel Consumption Productivitymentioning

confidence: 99%

Life Cycle Impact Assessment of Miscanthus Crop for Sustainable Household Heating in Serbia

Perić

Komatina

Antonijević

et al. 2018

Forests

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This paper investigates the environmental impacts and energy benefits of the cultivation of Miscanthus (Miscanthus × giganteus Greef et Deu.), in order to initiate its use in sustainable household heating in the Republic of Serbia. Based on the analysis of available data regarding the use of agricultural machinery in Serbia, a Miscanthus supply chain is constructed and examined in detail, scrutinizing all relevant operations—from planting of rhizomes to thermal energy production. Results of the life cycle assessment identify the briquetting process as the most environmentally burdensome operation due to high electricity consumption and low productivity. It is concluded that an average yield of 23.5 t dry matter (d.m.) year−1 obtained from 1 ha of chernozem soil would have energy output:energy input (EO:EI) ratio of 51:1, and would release 365.5 gigajoules (GJ) of heat during combustion in a boiler. With this amount of energy, around 383 m2 of a free-standing family house in Serbia can be heated annually. The same amount of energy is obtained by the combustion of 22 t of lignite or 23 t of wood logs. The substitution of lignite and wood with Miscanthus briquettes would lead to significant reduction of CO2 equivalents (eq), SO2 eq, P eq, N eq, 1,4 dichlorobenzene (1,4-DB) eq, Non-methane volatile organic compound (NMVOC), PM10 eq and U235 eq emissions. This designates Miscanthus as a more sustainable energy solution for household heating. In instances where more modern agricultural machinery is used, emission reduction is higher, except for CO2 eq due to higher emission factors predicted for more powerful engines. Depending on Miscanthus’ annual yield, the replacement of set-aside land with Miscanthus plantations result in carbon (C) sequestration from 0.08 t C ha−1 year−1 to 0.91 t C ha−1 year−1. In a modern machinery scenario, C sequestration is only attainable when maximal Miscanthus yield is obtained. The combined use of machinery with different engine power is the best option for Miscanthus cultivation in Serbia.

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Ekonomsko-tehnološki parametri optimalnog korišćenja traktora

Cited by 4 publications

References 0 publications

Sustainable Organic Corn Production with the Use of Flame Weeding as the Most Sustainable Economical Solution

Sustainable Organic Corn Production with the Use of Flame Weeding as the Most Sustainable Economical Solution

Use of Geothermal Energy in the Food Industry: A Review

Life Cycle Impact Assessment of Miscanthus Crop for Sustainable Household Heating in Serbia

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