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
Grain Culture/45
Then reweigh the same grain after it has been dried in an oven (250 O F. for 3 hours) and subtract
this new weight from the original 1 00 grams. The resultant figure is the percentage of moisture naturally bound within the grain.

PREPARATION OF GRAIN SPAWN
The optimum moisture content for grain in the production of spawn is between 49-54%. The
following formulas are based on cereal rye grain, Secale cereale, which usually has a moisture
content of 11 %. Some variation should be expected depending on the brand, kernel size, geographical origin and the way the grain has been stored.

The standard spawn container for the home cultivator is the quart mason jar while the
commercial spawn maker prefers the gallon jar. Wide mouth mason jars have been extensively
used by home cultivators because of several books popularizing fruitbody production in these jars.
Wide mouth jars have been preferred because mushrooms grown in them are easier to harvest than
those in narrow mouth ones. Not only is this method of growing mushrooms outdated, but wide
mouth jars have several disadvantages for spawn production and hence are not recommended.
Narrow mouthed containers have less chance of contaminating from airborne spores because of
their smaller openings and are more suited to use with synthetic filter discs. The purpose of the
spawn container is to temporarily house the incubating mycelium before it is laid out in trays or used
to inoculate bulk substrates. Jars are not well suited as a fruiting container.
Most commercial spawn makers cap their spawn bottles with synthetic filter discs which allow
air penetration and gaseous exchange but not the free passage of contaminating spores. Home
cultivators, on the other hand, have used inverted mason lids which imperfectly seal and allow some

Figure 45 Two jars
of grain media,
before and after
autoclaving using the
above formulas.

PDF compression, OCR, web-optimization with CVISION's PdfCompressor