Development of bacterial communities as affected by pH and soil type
1999
Weyman-Kaczmarkowa, W. | Pedziwilk, Z. (Agricultural University, Poznan (Poland). Dept. of Agricultural Microbiology)
A study was made of the effect of liming (Ca(OH)2) on the numbers and biomass of bacteria (B) determined by a direct method in two textural types of soil; loamy sand (ls) and a loose sandy soil (lss) during 90 days in laboratory conditions. The liming of lss caused a marked and comparatively permanent increase in the bacterial biomass highly correlated with changes in soil acidity. The raising of pH from 4.5 to 7.0 and 9.0 brought about an increase in the mean size of biomass by 74 and 170 percent, respectively, in comparison with the control. The response of bacterial communities in the loamy sandy soil to the raising of pH was less enduring than that found in loose sandy soil, although even after 3 months their biomass sizes were 10 percent greater than the control
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