The mushroom cultivator. A practical guide to growing mushrooms at home

Paul Stamets. The mushroom cultivator. A practical guide to growing mushrooms at home. - Agarikon press, 1983

Содержание

FOREWORD by Dr. Andrew Weil

PREFACE

I. INTRODUCTION TO MUSHROOM CULTURE

II. STERILE TECHNIQUE AND AGAR CULTURE

III. GRAIN CULTURE

IV. THE MUSHROOM GROWING ROOM

V. COMPOST PREPARATION

VI. NON-COMPOSTED SUBSTRATES

VII. SPAWNING AND SPAWN RUNNING IN BULK SUBSTRATES

VIII. THE CASING LAYER

IX. STRATEGIES FOR MUSHROOM FORMATION (PINHEAD INITIATION)

X. ENVIRONMENTAL FACTORS: SUSTAINING THE MUSHROOM CROP

XL GROWING PARAMETERS FOR VARIOUS MUSHROOM SPECIES

XII. CULTIVATION PROBLEMS AND THEIR SOLUTIONS: A TROUBLESHOOTING GUIDE

XIII. THE CONTAMINANTS OF MUSHROOM CULTURE: IDENTIFICATION AND CONTROL

XIV. THE PESTS OF MUSHROOM CULTURE

XV. MUSHROOM GENETICS

APPENDICES

GLOSSARY

BIBLIOGRAPHY

INDEX

PHOTOGRAPHY AND ILLUSTRATION CREDITS

ACKNOWLEDGEMENTS

OCR
68/The Mushroom Cultivator

Figure 73

growers. (After Vedder)
Standard ventilation system used by Agaricus

circulated air by a single damper. To prevent leakage during spawn running and pre-pinning, the
damper fits tightly against the fresh air inlet. This allows full recirculation of room air to maintain
When fresh air is reeven conditions, thereby counteracting temperature and CO2 stratification.
including
complete
closure
of
the recirculation inquired, the damper can be adjusted to any setting,
and
evacuated
through
an
exhaust
vent or cracks
let. As fresh air is introduced, room air is displaced
different
temperature
than
the
one
required for
around the door. Because fresh air is generally at a
the growing room, it must be used judiciously in order to avoid disrupting the growing room envithe
ronmenf or overworking the heating, cooling and humidication systems. By properly mixing
mushfresh outside air and the room air, a balance can be achieved and optimum conditions for

room growth prevail.
Fresh air serves many important functions in mushroom culture, primarily by supplying oxygen
to the growing mushrooms and carrying away CO2. Fresh air also facilitates moisture evaporation

from the cropping surface. To defermine the exact amount of air needed in a given situation, a
knowledge of the CO2 requirements for the species being grown is necessary. (See Chapter Xl on

growing parameters for various species). The fresh air can also be measured in terms of air changes

per hour, a common way mushroom growers size the fan in the growing room.

Fans
Axial flow and centrifugal fans are the two most commonly used in mushroom houses. Both
fans operate well against high static pressure, which is a measure of the resistance to forced air.
Static pressure is measured in inches of water gauge—the height in inches to which the pressure lifts
obstructions to the
a column of water—and is caused by filters, heating and cooling coils or other
of
cubic
feet per minute
free flow of air. Fans are rated in terms of their output, a measurement
(CFM) at varying static pressures (S.P.). When choosing a fan, these Iwo factors must be considered

for proper sizing.

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