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Utility Values of Extensive Lawns Fertilized with Sewage Sludge
Kazimierz Grabowski1, Agata Głowacka-Gil1, Stefan Grzegorczyk1, Krystyna Grabowska2
1Department of Grassland and Green Space Management
2Department of Water, Climate and Environmental Management
University of Warmia and Mazury, Plac Łódzki 1, 10-724 Olsztyn, Poland
Pol. J. Environ. Stud. 2015;24(5):1959–1968
utility values of grass sward
This paper presents the results of studies carried out in 2006-08 on the impact of sewage sludge on the utility values of grass sward. The study was conducted with different doses of sewage sludge (0, 70, 140, 210, and 280 Mg·ha-1) applied in spring, summer, or autumn, and mixtures of lawn grass designed in the Department of Grassland at the University of Warmia and Mazury in Olsztyn, which were sown in spring, summer, or autumn. Winter survival, turfness, colour, perfection of leaf blades, and general appearance of grass sward on a nine-point scale were evaluated during vegetation seasons. It was demonstrated that incremental doses of sewage sludge positively impacted the examined characteristics, especially when fertilization was applied in spring. Spring sowing of lawn grass seeds was also found to be better. It was shown that both tested mixtures (fescue and bluegrass) are useful for sowing extensive lawns, although the fescue mixture had more favourable parameters.
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