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Wood-ash fertilization and fire treatments in a Scots pine forest stand: Effects on the organic layer, microbial biomass, and microbial activity by H. Fritze; A. Smolander; T. Levula; V. Kitunen; E. Mälkönen is a Agricultural and Biological Sciences article available to read on EtoBox.

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We studied the reactions of humus layer (F/H) microbial respiratory activity, microbial biomass C, and the fungal biomass, measured as the soil ergosterol content, to the application of three levels of wood ash (i000, 2500, and 5000 kg ha-t) and to fire treatment in a Scots pine (Pinus sylvestris L.) stand. Physicochemical measurements (pH, organic matter content, extractable and total C content, NH~-and total N content, cation-exchange capacity, base saturation) showed similarity between the fire-treated plots and those treated with the lowest dose of wood ash (1000 kg ha-l). The ash application did not change the level of microbial biomass C or fungal ergosterol when compared to the control, being around 7500 and 350 gg g-1 organic matter for the biomass C and ergosterol, respectively 9 The fire treatment lowered the values of both biomass measurements to about half that of the control values 9 The fire treatment caused a sevenfold fall in the respiration rate of fieldmoist soil to 1.8 ~tl h-1 g-~ organic matter compared to the values of the control or ash treatments. However, in the same soils adjusted to a water-holding capacity of 60%, the differences between the fire treatmen

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Author

H. Fritze; A. Smolander; T. Levula; V. Kitunen; E. Mälkönen

Publisher

Springer; Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0178-2762)

Published

1994

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)