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Three combinations of sludge originating from two purification plants (5 and 10 tons of sewage sludge per hectare), two Swedish (Gudrun and Tora) and two Polish (marked as A and B) willow cultivars were used in the experiment. The aim of detailed microbial tests was to evaluate the influence of the sewage sludge on changes in microflora composition in rhizosphere of selected willow cultivars. Three-year...
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