Soil microbial pollution around the manure storage places in dairy farm production system
2004
Kostadinova, G. | Petkov, G. | Mikhajlova, G. | Denev, S. (Trakijski Universitet, Stara Zagora (Bulgaria))
Ecological assessment was made on microbial pollution of the soil around the places for manure storing in antropogenic eco-systems for production of cow milk. It was found that number of microorganism in the manure and soil vary in broad bounds: for microbial number - in the fresh manure from 247 000 to 64 440 000 g/manure; in the stored manure from 153 000 to 80 000 000 g/manure; in the soil on 1 m from storage from 22 800 to 2 857 000 g/soil; in the soil on 30 m - from 17 900 to 493 200 g/soil; coli-titar - in fresh manure from 10-1 to 10-6; in the stored manure from 10-1 to 10-5; in the soil on 1 m from storage from 10-1 to 10-4; in the soil on 30 m - from 10-1 to 10-4. The manure in the studied farms was a source of soil pollution exceeding accepted norms with saprophite and sanitary indicative microflora (coli-forms) around storage places.
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