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Abstract

The article deals with effect the use of organic (biohumus) and mineral (biochar) fertilizers based on the products of chicken vital activity on changing the fertility of technogenic sod-podzolic soils exposed to constant and unstable magnetic fields. The germination and growth dynamics of grasses and onions were investigated. The rational rate of introduction of the studied fertilizers into the technogenic soil is determined. Running (RMF) and direct (DMF) magnetic fields were applied in two ways: with fertilizers added and without fertilizers added. It has been established that the effect of preliminary magnetization of technogenic soil has a significant effect on lawn grass germination and the length of onion feathers, which are more than twice the height when exposed to the RMF, as compared with DMF. The effect of RMF on grass germination was also twice as high for DMF, when fertilizers were added. The DMF mag-netization and biohumus helps to increase the grass sprout height by 10–20%. Onion sprouts were higher in two cases: DMF and biohumus; RMF and biochar. The influence of the factor of fertilizer type has a significant effect in 30–40% of cases, whilst at a spread rate of more than 5%, significant chemical activity of biochar negatively affects the germination of both grass and onion.
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Authors and Affiliations

Maria Vasilyeva
1
ORCID: ORCID
Stanislav Kovshov
2
ORCID: ORCID
Johnny Zambrano
3
ORCID: ORCID
Maxim Zhemchuzhnikov
4
ORCID: ORCID

  1. Saint Petersburg Mining University, Faculty of Mechanical Engineering, Department of Transport and Technological Processes and Machines, 2, 21st Line, St Petersburg 199106, Russia
  2. Saint Petersburg Mining University, Department of Industrial Safety, St Petersburg, Russia
  3. Escuela Politecnica Nacional, Departamento de Petróleos, Quito, Ecuador
  4. JSC Roskar Poultry Farm, Pervomayskoe settlement, Leningrad region, Russia

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