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Environment-friendly restoration of land degraded by invasive plants

Global summit on Agriculture & Organic farming

Magdalena Szymura

Wroclaw University of Environmental and Life Sciences, Poland

Keynote: Adv Crop Sci Tech

Abstract
Semi-natural grasslands provide a wide range of ecosystem servicesâ?? from forage production and carbon sequestration to water retention and purification. Unfortunately, recently in Europe most semi-natural grasslands are threatened by invasive alien plants, which have also overgrown abandoned fields. The aim of the study was to test different methods of eliminating invasive species and adding seed to restore valuable species-rich grassland. Three eradication treatments (herbicide spraying; rototilling; turf stripping) and two seed addition methods (direct sowing of a grass species mixture; spreading of fresh hay) were examined alongside control treatments. The experimental plots were mowed twice a year, and the vegetation composition, biomass production, hay chemical composition, and fodder quality were assessed. Significant differences were observed in the invadersâ?? cover between the removal treatments and between the seed addition methods early in the study, the differences lessened over time, especially for the removal treatments. By the end of the six year study period, the invasive species cover was reduced to 25% of the initial complete coverage. Spreading fresh hay greatly reduced invasive species biomass and yielded the highest characteristic species cover. Herbicide treatment was not more efficient than the more environmentally friendly methods over the study period. The results suggest that fresh hay is good method of seed addition for restoring old fields overgrown by invasive plant species. With mowing of the restored area twice a year for several years, invasive species removal by turf striping (scalping) followed by the spreading of fresh hay is recommended for grassland restoration given its environmental impact, cost, and hay quality.
Biography

Dr hab. Magdalena Szymura is a biologist with specialization in environmental biology, more specifically botany. She is working currently in the area of agriculture and horticulture sciences. She prefers field works, connected with vegetation analyses. Her research focuses on invasive species, particularly plants. She analyzes their environmental impact, methods of elimination, and possibilities of habitat restoration, particularly in case of grassland habitats. She also studies methods for preserving the biodiversity of meadows and pastures. She cooperates with farmers, as well as conduct her projects on protected areas: Karkonosze National Park and Stolowe Mountains National Park. Recently her research is connected with city greenery, and possibilities of enriching the ecosystem services served by city grasslands due to biodiversity maintenance and human well-being.

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