NDLI: Properties of peat-based casing soils and their influence on the water relations and growth of the mushroom (Agaricus bisporus)

Content Provider	Springer Nature Link
Author	ble, R. Dobrovin Pennington, A. Evered, C.E. Mead, A.
Copyright Year	1998
Abstract	Different combinations of peat and chalk or lime sources with differing moisture contents were used to determine how specific physical and chemical properties of the casing soil relate to the growth and water relations of the mushroom. The peat types varied in terms of decomposition and extraction method; the lime addition varied in terms of rate and type (chalk or sugar beet lime). During the colonisation of the casing soil before fruiting, the extension growth rate of mushroom mycelium was most closely correlated (negatively) with the volumetric moisture content of the casing soil. Scanning electron microscopy showed that mycelium growing at a lower casing soil matric potential (Ψ$_{m}$) had a much finer and branched structure than mycelium growing at a higher Ψ$_{m}$. Across all the peat and lime source treatments, a relationship was found between the mean Ψ$_{m}$ of the casing soil and mushroom yield, with an optimum Ψ$_{m}$ of -7.9 to -9.4 kPa. Mushrooms are produced in ‘flushes’ at about 8-day intervals and during the development of each flush of mushrooms, there was a significant decrease in casing soil Ψ$_{m}$ . This decrease (to below -40 kPa) was greatest in the second flush, which was the highest yielding. There were no relationships between mushroom yield and casing soil osmotic potential Ψ$_{π}$ within the range -93 to -154 kPa or any of the other chemical properties and water and air holding characteristics of the casing soils which were determined. Across different casing soil treatments, mushroom dry matter content was negatively correlated with mushroom yield and positively correlated with mushroom tissue osmotic potential.
Starting Page	1
Ending Page	13
Page Count	13
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	207
Issue Number	1
e-ISSN	15735036
Language	English
Publisher	Springer Netherlands
Publisher Date	1998-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Plant Sciences Soil Science & Conservation Plant Physiology Ecology
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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