megha mushroom
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“MUSHROOM” PRODUCTION AND PROTECTION TECHNOLOGY
INTRODUCTION• Mushroom is the fleshy, spore bearing fruiting body of
a fungus.• They are also used as a source of human food. • In india, 3 mushroom types are cultivated
commercially-• White button mushroom • Oyster mushroom• Paddy straw mushroom
White button mushroom
GROWTH STAGES OF MUSHROOM
The cultivated mushroom(A.bisporus) & field mushroom(A.campestris) has the following growth
stages:
I. Pin Stage (minute fruiting body is formed)
II. Button Stage (slightly expanded form)
III. Mushroom rapidly pulls in water from its mycelium & expands & forms Primordia.
IV. After heavy rainfall attains full size in few hours, known as full size ‘mushroom’
V. It releases the spores
VI. Then collapse
VARIETIES1. EDIBLE MUSHROOMS Used in cooking Have high fiber content Provide vitamins such as thiamine, riboflavin, niacin, biotin &
ascorbic acid. Minerals such as selenium, potassium & phosphorus. Eg. Oyster mushroom shiitake Portobello mushroom
2. TOXIC MUSHROOM Produce secondary metabolites that render them toxic.
3. PSYCOACTIVE MUSHROOMS (magic mushrooms) Possess psychedelic properties
CULTIVATION PROCESS1. Selection of strains: Selecting the best strains which should be high yielding, visually attractive,
having desirable flavor & resistant to pests & diseases. Presently, there are many strains of white, cream & brown varieties of
mushroom.
2. Maintenance of Strains: Three methods are known: Multispore culture Tissue culture Mycelium transfer
3. Spawn:• It is a pure mushroom mycelium growing on a sterilized grain
medium.
• MANURE SPAWN:• both composted horse dung or synthetic compost may be used.
SPAWN (cont’d)• Manure is thoroughly washed & excess water is squeezed out.
Then manure is packed in half litre milk bottles.
• It is then inoculated with agar containing mycelium& incubated at 22-24 degree C.
• GRAIN SPAWN: • 10 kg of wheat grains are boiled for 15 min in 15 ltr. of water &
allowed to soak.• The grains are mixed with-• Gypsum: prevents grains from sticking together.• Calcium carbonate: necessary to correct the ph.• Grains are autoclaved at 121 degree C for 2 hr.• Inoculated & incubated at 22-24 degree C.
• PERLITE SPAWN: • Perlite is a mineral which expands at temperature more than 10000C.
Spawn (cont’d)• The ingredients, of the spawn are : • Perlite (1,450 g), • wheat-bran (1,650 g), • gypsum (200 g), • calcium carbonate (50 g), and• water (665 cc).
The ingredients are mixed, filled in bottles and sterilized.
• Perlite spawn is easy to disperse and can be produced at a cheaper cost. This spawn can be stored for a long time.
COMPOSTINGCompost is a substrate which provides adequate levels of nutrients to
support the crop.• NATURAL COMPOST: horse dung mixed with wheat straw.• SYNTHETIC COMPOST: base materials used with straw without bulk
animal manure.• MATERIALS & THEIR FUNCTIONS:
1.Base materials: wheat straw, maize cobs & cellulosic plant materials.
Chief function- to provide cellulose, hemicellulose & lignin.• Also provide proper physical structure to the mixture for proper aeration.
2. Supplements: activate fermentation. Animal dung- nitrogen content 1-5% Carbohydrate nutrients- molasses & malt sprouts Concentration meals- wheat or rice bran, seed meals of cotton, soya,
castor etc. nitrogen content 3-12% Nitrogen fertilizers
METHODS OF COMPOSTINGTwo methods for preparing compost are:
Long method: primitive & commercially suitable
Short method: Quick, definite & advanced
Composting by long method: 1. Wetting the straw: If not wet, it will not soften & unless it softens it
will not absorb water later.2. Mixing & heaping: After wetting the straw, supplements excluding
gypsum are mixed & mixture is finally stacked in a heap.3. Turning schedule: ensure that the heap attains high temperature
(70-75 degree C) otherwise compost will lack necessary nutritive value.
Time schedule to make a heap is as follows:Day zero Wet, mix the stack the heap
4th day First turning
8th day Second turning
12th day Third turning
16th day Fourth turning
20th day Final turning and filling of the trays
Composting by short method:
It consists of two phases
Phase I Phase II Phase I- similar to initial stages of long method ,except for turning schedule:
Day zero Wet, mix the stack the heap
3th day First turning
th day Second turning
9th day Third turning- gypsum is added
10th day Fourth turning
HARVESTING
• Mushroom pin heads start appearing after 7-10 days.
• About two third of total crop can be harvested within first 3 weeks.
• Mushrooms are harvested as buttons.
• Have a very short shelf life.
Pest & disease managementPESTS
Variety of small flies & mite species are pests of mushrooms.Some directly attack fruiting bodies & some may attack the mycelium.Mite damage shows small cavities in stem & cap.Mycelium eating mites cause high yield losses.
NEMATODE CONTROL:
Nematodes Symptoms & damage
Management
Aphelenchoides composticola
White spawn turns brown, mycelium is stingy, compost surface sinks, poor yields.
Mix dry neem leaf powder with compost(2-5)%
Ditylenchus myceliophagus
Devitalize the mycelium.
Apply Thionazin (80ppm) to the compost.
Disease Other names Symptoms
Dactylium Cobweb, mildew White to pink cobweb-like fluffy mould.
Diehlomyces Calves brains / false truffle
A competing fungus which produces brain-shaped fruiting bodies.
Fusarium Damping off Mushrooms wither.
Mycogone Wet bubble / white mould
Dense white growth on gills.
Papulaspora Brown plaster mould Brown plaster-like patches on casing.
Scopulariopsis White plaster mould White plaster-like patches on casing.
Trichoderma Green mould Dark green mould patches on casing spreading to lesions on stems.
Verticillium Dry bubble / brown spot Brown irregular pitted areas on stems and caps. Distortion and splitting.
FUNGAL DISEASES OF MUSHROOM:
Bacterial diseases: Bacterial spot & Bacterial pit- Pseudomonas cause yellow to brown blotches on the cap.
PEST MANAGEMENT
• Eradicate early infection centres with formaldehyde.
• Maintaining high levels of hygiene will reduce a number of problems.
THANK YOU
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