White Clover (<i>Trifolium repens</i> L.) Cultivation as a Means of Soil Regeneration and Pursuit of a Sustainable Food System Model
Barbara Sawicka | Barbara Krochmal-Marczak | Józef Sawicki | Dominika Skiba | Piotr Pszczółkowski | Piotr Barbaś | Viola Vambol | Mohammed Messaoudi | Alaa K. Farhan
Background: Currently, in the face of constant climate change and the development of the mining industry, recovering soils degraded by industry for agricultural production and ensuring more food security for the world has become more difficult. Soil contamination is of particular concern as it affects not only human health but also vegetation growth and the biological environment. The aim: The aim of our research is to develop an appropriate cultivation technology in the area of former and present oil extraction areas and monitor their recovery for agricultural purposes and, thus, for food production. Methods: Experimental, descriptive, laboratory, and comparative methods were used. Results: A significantly decreased content of PAHs in the tested soil under the influence of the “Green technology” was observed just in the third year of the research. Eight years after the introduction of “green technology”, the sum of PAHs in the soil degraded by the oil extraction industry was more than 2-fold reduced. Therefore, there is a need to develop a nature-friendly and cost-effective method of removing and minimizing the effects of soil contamination by oil and its products. Conclusions: <i>T. repens</i> turned out to be a species that significantly prevents the degradation of the agricultural environment and restores soil for agricultural use, consequently encouraging the production of food safe for humans. The immeasurable effect of the use of “Green technology” was to ensure the biodiversity of the grasslands and to return the sources of natural nitrogen bound by bacteria of the genus <i>Rhizobium</i> in coexistence with plants from the <i>Fabaceae</i> family.
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