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Changes in the bacterial community after application of oily sludge to soil

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The changes in the bacterial flora after application of oily sludge and fertilizer to two different soils, both sandy, but one somewhat richer in organic material, have been studied. Application of oily sludge and fertilizer to the soils had no influence on direct counts. The CFUs increased in the low-organic soil when sludge was applied, but did not change in the richer soil by the same treatment. When both sludge and fertilizer were applied together, strong increases in CFUs were found in both soils. Application of fertilizer together with sludge excluded sporeforming rods and actinomycetes from the poorer soil and strongly stimulated pleomorphic rods+ cocci and non-sporeforming regular rods. The same treatment of the richer soil resulted in an enhancement of CFUs of all tested groups.

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Correspondence to Aaslaug Lode.

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Lode, A. Changes in the bacterial community after application of oily sludge to soil. Appl Microbiol Biotechnol 25, 295–299 (1986). https://doi.org/10.1007/BF00253666

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  • Sludge
  • Bacterial Community
  • Organic Material
  • Strong Increase
  • Bacterial Flora