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Query: UMLS:C0016632 (Fox)
 1,461 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Microbial respiration within a Fox sandy loam and a Blount silt loam was assessed after addition of acidic (pH 3.5) and alkaline (pH 12.2) fly ash (FoxAC, BlountAC, FoxAK and BlountAK, respectively). At the 20% alkaline ash rate, respiration was completely inhibited in the FoxAK and reduced by 97% in the BlountAK. In contrast, the 20% acidic ash rate reduced respiration in the FoxAC by 28% and in the BlountAC by 33%. Co-application of 5% composted sewage sludge to the ash-soil mixtures (FoxSSAC, BlountSSAC, FoxSSAK and BlountSSAK, respectively) improved respiration in both soils except for the 20% alkaline ash rate. Soil electrical conductivity, and concentrations of B, Mo, exchangeable Al and soluble anions were not closely associated with inhibition of respiration. In contrast, high pH appeared associated with decrease in respiration. Ecological Dose 50% (EcD(50)) values of the sewage-amended treatments were greater than for those of the non-sludge treatments for each sampling date as a result of the ameliorating properties of the sludge.
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PMID:Microbial respiration in fly ash/sewage sludge-amended soils. 1509 18