Sludge utilization is a growing problem due to an increase of the amount of newly built wastewater treatment plants. It seems the most rational way to use this sludge is to utilize it in agricultural systems, which meets two goals simultaneously: plants (crops) use mineral nutrients from the sludge and purify sludge treated soil from heavy metals and other contaminations. The aim of the experiment was to investigate the effects of fertilization with sludge obtained from municipal wastewater treatment plant on chosen physiological parameters related to photosynthetic apparatus efficiency of Virginia mallow (Sida hermaphrodita (L.) Rusby) plant and on biology of soil. The experiment was conducted in 2007 at the Institute of Land Reclamation and Grassland (IMUZ) in a two factorial randomized blocks designed with 3 replicates. The experiment involved the following treatments: control without additional nitrogen fertilization and others with 0% and 100% share of nitrogen from a sludge within total rate 170 kg N/ha. Potassium fertilization was 240 kg/ha for each variant. Physiological analyses involving relative chlorophyll content and a pool of reduced plastoquinone electron acceptors (Area) were performed on three dates: July 2nd (initial growth phase), August 2nd (full growth stage) and October 17th (the final growth stage). In May, July and August there were determined microbiological parameters of soil: total number of bacteria and number of fungi. Our results showed that differentiated fertilization level did not affect the relative chlorophyll content in Virginia mallow leaves in the first and second period of vegetation. Stimulatory effect of sludge on efficiency of photosynthetic apparatus measured as Area index was found at the end of the vegetation period. Similar effect was observed in the case of microbiological state of soil fertilized with the sludge.
Full text available in Polish in Adobe Acrobat format:https://www.npt.up-poznan.net/pub/art_4_99.pdf
| MLA | Augustynowicz, Janusz, et al. "Wpływ nawożenia osadem ściekowym na wybrane parametry biologii gleby oraz wydajności aparatu fotosyntetycznego ślazowca pensylwańskiego (Sida hermaphrodita (L.) Rusby)." Nauka Przyr. Technol. 4.6 (2010): #99. |
| APA | Janusz Augustynowicz, Stefan Pietkiewicz, Mohamed Hazem Kalaji, Stefan Russel (2010). Wpływ nawożenia osadem ściekowym na wybrane parametry biologii gleby oraz wydajności aparatu fotosyntetycznego ślazowca pensylwańskiego (Sida hermaphrodita (L.) Rusby). Nauka Przyr. Technol. 4 (6), #99 |
| ISO 690 | AUGUSTYNOWICZ, Janusz, et al. Wpływ nawożenia osadem ściekowym na wybrane parametry biologii gleby oraz wydajności aparatu fotosyntetycznego ślazowca pensylwańskiego (Sida hermaphrodita (L.) Rusby). Nauka Przyr. Technol., 2010, 4.6: #99. |
Janusz Augustynowicz
Instytut Technologiczno-Przyrodniczy
Falenty
al. Hrabska 3
05-090 Raszyn
Poland
e-mail: j.augustynowicz@itep.edu.pl