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This research was conducted for six years, in experimental fields located in B-rzava Plain, West part of Romania. The purpose of this research was to observe if a mixture of manure and calcium carbonate can improve some fertility indicators of soil. The monitored soil fertility indicators were: pH, humus content and nitrogen index. The mixture applied on the experimental field contain 20 t/ha cow manure and 4 t/ha calcium carbonate, being distributed in the first experimental year and in the fourth experimental ye...

The impact of abandoned mines on the water environment is a significant concern due to the long-lasting ecological and health effects associated with mining activities. Numerous scientific studies highlight that abandoned mines pose substantial threats to local water quality through the release of toxic substances and heavy metals into adjacent ecosystems. The zones of the 2 mines have been subject to various environmental and hydrological assessments, particularly concerning the effects of mining activities on wa...