ISSN 1995-4301

ISSN 2618-8406

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Biological contamination of arable land with pig waste

L.V. Pilip, N.V. Syrchina, V.A. Kozvonin, E.P. Kolevatykh, T.Ya. Ashikhmina, A.V. Sazanov
Section: Agroecology
Large industrial pig farms are a source of biological contamination of arable lands located in the immediate vicinity of these enterprises, as a result of the introduction of large volumes of liquid fraction of manure effluents. Utilization of these biogenic wastes is a serious economic and environmental problem for the agro-industrial complex. The work is devoted to the study of the influence of the liquid fraction of pig farm manure effluents on the sanitary condition of arable land according to agrochemical and microbiological studies of soil samples. The study revealed that the regular introduction of pig manure into arable land (for 5 years) led to a significant increase in the content of mobile forms of phosphorus and potassium; there was a pronounced tendency to the accumulation of copper and zinc in the arable horizon of the soil, in addition, high values of the total microbial number, the index of bacteria of the group Escherichia coli, Enterococci and Clostridium perfringens. Salmonella, including pathogenic and thermophilic bacteria, were found in significant quantities. In addition, pig manure effluents are potential sources of ingress into the soil of agricultural land, as well as adjacent territories with saprophytic microorganisms, as well as bacteria of the group E. coli, C. perfringens, Proteus spp., Clostridium spp., Salmonella enteritidis, fungi Alternaria alternate, Botrytia cinerea, yeast Saccharomyces cerevisiae. Insufficient attention to environmental monitoring of territories adjacent to livestock enterprises can lead to chemical and biological pollution of the environment by a wide range of pollutants present in manure runoff, and the intensification of the development of the industrial pig industry will accelerate this process.
Keywords: рig manure effluents, microorganisms, industrial pig farms, biological soil contamination, heavy metals, pig manure management

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Article published in number 3 for 2022
DOI: 10.25750/1995-4301-2022-3-199-205
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