Interactive effect of soil water potential and temperature on wood decomposition by resinicium bicolor

Abd Jamil Z., . and Boddy L., . (2003) Interactive effect of soil water potential and temperature on wood decomposition by resinicium bicolor. [Proceedings Paper]

The effect of soil water potential and temperature on mycelial sustainability and wood decomposition by Resinicium bicolor wa studied in laboratory microcosm comprising of compacted soil in 24X24 cm tray and using Scots pine Pinus sylvestris wood blocks of size 2X2X0.5 cm. Six incubation temperatures of 5 10 15 20 25 and 30 deg C were factorially combined with five water potentials -0.002 -0.0028 -0.004 -0.008 MPa. The fungus was allowed to grow from the wood block in the tray and when the mycelia had completely regressed the wood blocks were harvested and relative decay rate final weight loss of wood block and mycelial days to regression was estimated. Increase in temperature significantly p 0.001 increased wood relative decay rate decreased days to mycelial regression and final weight loss. Increase temperature from 5- 25 deg C resulted in linear reduction of days to mycelial regression at the rate of 37.9 days and increase in final weight loss at 1.8 per deg C rise in temperature. Decrease in resulted in significant decrease days to mycelial regression p 0.001 final weight loss p 0.001 and relative decay rate p 0.05. Water potential ranging from -0.002 to -0.006 MPa resulted in earlier regression of mycelial systems and reduced both the wood relative decay rate and weight loss. At 5 deg C the wood decay rate markedly decreased but mycelial growth was sustained longer and the system was finally able to decompose relatively large amount of wood. The temperature interaction effect on relative decay rate days to regression and weight loss were significant at p 0.05 p 0.01 p 0.01 to -0.008 MPa has resulted in relatively more reduction in weight loss and relative decay rate than those at lower temperatures.

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Abstract

The effect of soil water potential and temperature on mycelial sustainability and wood decomposition by Resinicium bicolor wa studied in laboratory microcosm comprising of compacted soil in 24X24 cm tray and using Scots pine Pinus sylvestris wood blocks of size 2X2X0.5 cm. Six incubation temperatures of 5 10 15 20 25 and 30 deg C were factorially combined with five water potentials -0.002 -0.0028 -0.004 -0.008 MPa. The fungus was allowed to grow from the wood block in the tray and when the mycelia had completely regressed the wood blocks were harvested and relative decay rate final weight loss of wood block and mycelial days to regression was estimated. Increase in temperature significantly p 0.001 increased wood relative decay rate decreased days to mycelial regression and final weight loss. Increase temperature from 5- 25 deg C resulted in linear reduction of days to mycelial regression at the rate of 37.9 days and increase in final weight loss at 1.8 per deg C rise in temperature. Decrease in resulted in significant decrease days to mycelial regression p 0.001 final weight loss p 0.001 and relative decay rate p 0.05. Water potential ranging from -0.002 to -0.006 MPa resulted in earlier regression of mycelial systems and reduced both the wood relative decay rate and weight loss. At 5 deg C the wood decay rate markedly decreased but mycelial growth was sustained longer and the system was finally able to decompose relatively large amount of wood. The temperature interaction effect on relative decay rate days to regression and weight loss were significant at p 0.05 p 0.01 p 0.01 to -0.008 MPa has resulted in relatively more reduction in weight loss and relative decay rate than those at lower temperatures.

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Item Type:	Proceedings Paper
Additional Information:	Received on 3 Dec 2007 QK710.2 M239 2003
AGROVOC Term:	SOIL WATER
AGROVOC Term:	WOOD DECAY
AGROVOC Term:	WATER POTENTIAL
AGROVOC Term:	TEMPERATURE
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:28
URI:	http://webagris.upm.edu.my/id/eprint/16952

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