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Conceptual approaches to rehabilitation of pesticide-polluted soils of Ukraine

The Concept of Rehabilitation of Contaminated Soils has been developed, which substantiates the ways to restore areas contaminated with persistent organic pesticides. The practical implementation of the Concept will contribute to the transfer of existing land use systems to the principles of sustainable agricultural development, as well as the preservation, reproduction and expansion of biodiversity, as well as improving the environmental safety of agro-ecosystems for sustainable development of the Agrosphere. The Concept combines ways of practical implementation of environmentally friendly methods of cleaning pesticide-contaminated areas and further use of rehabilitated land in the process of agricultural activity in Ukraine. The problem of pesticide pollution of agroecosystems is proposed to be solved by using scientifically sound ecologically safe methods of soil remediation with multicomponent pesticide pollution developed at the Institute of Agroecology and Environmental Management of NAAS, in particular using bioremediation methods. The following are proposed for use: methods of agroecological monitoring of areas contaminated with persistent organic pollutants, methods of phytotesting and phytoremediation of soils contaminated with resistant pesticides. For phytoremediation of contaminated soils, it is proposed to use annual cultivated (barley, wheat, beans, soybeans, zucchini, pumpkin) and wild (dandelion, bitter wormwood, common wormwood, wheatgrass) species of plant-mediators, which are suitable for phytostabilation and in the conditions of multicomponent soil pollution. The main stages of the Concept implementation are: complex agroecological monitoring of soils contaminated with residues of persistent organic pollutants (POPs); comprehensive ecotoxicological assessment of soil condition; determining the degree of chemical degradation of soils; adaptation of remediation technologies to the specifics of the area in need of cleaning; introduction of ecologically safe remediation methods into practical use; realization of prospects of further use of rehabilitated soils in various branches of agriculture; taking into account the ecological and economic efficiency of the use of remediation methods. Possibility and ways of using restored areas in the process of agricultural activity, taking into account the main stages of implementation of the Concept are set out in the developed in the Institute of Agroecology and Environmental Management of NAAS «Scientific and methodological recommendations for restoration of soil contaminated with organochlorine pesticides depending on their toxicity» and «Scientific and methodological recommendations for the use of restored areas in the process of agricultural activity».