Abstract
This paper contains substance and energy balances of mixed crop-livestock farming. The analysis involves the period between 2012 and 2015. The structure of the presentation in the paper includes: crops and their structure, details of the use of plants with a beneficial effect on soil and stocking density per 1ha of agricultural land. Cumulative energy intensity of agricultural animal and plant production was determined, which is coupled the discussion of the energy input in the production of a grain unit obtained from plant and animal production. This data was compared with the data from the literature containing examples derived from intensive and organic production systems. The environmental impact of a farm was performed on the basis of emergy analysis. Emergy fluxes were determined on the basis of renewable and non-renewable sources. As a consequence, several performance indicators were established: Emergy Yield Ratio EYR, Environmental Loading Ratio ELR and ratio of emergy from renewable sources R ! . Their values were compared with the parameters characterizing other production patterns followed in agricultural production. As a consequence, conclusions were derived, in particular the ones concerning environmental sustainability of production systems in the analyzed farm.
Highlights
Farming, along with other types of production, is associated with the need of application of a variety of means of production
Farming is associated with the need of considerable energy input in it
In the case of these, we talk about energy derived from renewable sources
Summary
Along with other types of production, is associated with the need of application of a variety of means of production. Due to the fact that the discussion of energy aspects is often accompanied by the analysis of cost indices of production, whereas the use of the energy derived from free sources is often disregarded in the overall balance This results in the fact that the calculations performed in such a manner do not account for the energy and cost associated with the decrease of the content of soil organic matter. Such account does not involve the assessment of the sustainability of a given type of production
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