ENVIRONMENTAL CONDITION OF SOD-PODZOLIC SOILS IN PRIKARPATTYA WHEN INTRODUCING SEWAGE SLUDGE UNDER THE ENERGY WILLOW

H.M. Hrytsulyak
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H.M. Hrytsulyak: Ivano-Frankivsk National Technical University of Oil and Gas

Balanced Nature Using, 2019, vol. 10, issue 1, 66-75

Abstract: Utilization of municipal waste, in particular sewage sludge, has been and remains one of the most important environmental problems of a global nature. On the other hand, the use of sewage sludge as fertilizer in agriculture has great prospects given the significant content of mineral nutrients and organic compounds in its composition. The introduction of sewage sludge is possible, above all, for the cultivation of non-food crops, prevents the ingress of contaminating compounds and pathogens into trophic food chains. Energy cultures are promising in this respect, they are spreading in Ukraine and in the world. In the medium and long term, interest in energy crops, in particular, in their energy, will only grow. Studies conducted on the sod-podzolic soils of the Carpathian region, aimed to study the effect of the use of composts based on sewage sludge on the productivity of agrophytocenoses of willow energy and changes in the ecological state of the soil system. According to the results of the research, it was established that the content of heavy metals in sod-podzolic soil, vegetative mass and willow energy root system varies significantly depending on the rate of application of sewage sludge and composts based on it. Ecologically safe application rates are: compost (sewage sludge + straw (3:1) in the range of 20–40 t/ha, determining the “average†phytotoxicity level of the Carpathian sod-podzolic soil. At the same time, non-composted sewage sludge is at a rate of 40–80 t/ha caused the phytotoxic effect of the soil at the “above average†level.

Keywords: heavy metals; willow energy; vegetative mass; composts; sewage sludge; sod-podzolic soil. (search for similar items in EconPapers)
Date: 2019
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