Alexander Tsarev
Mushroom industry

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Saprophytic nematodes

Saprophytic nematodes are not considered to be mushroom pests. With their oral cavity that looks like a tube, they suck in organic nutrients and microorganisms and especially bacteria that exist in great amount in compost and in the casing layer. That is why poorly prepared and pasteurized compost is not well suited for the development of mushroom mycelium, but is a favorable environment for the nutrition and reproduction of nematodes that have survived pasteurization. In nonselective substrate, with overly humid areas, nematode population grows incredibly fast. The toxins they release and the increasing number of putrefactive bacteria weaken the mycelium growth. The same thing can happen when water leaks through the casing layer after watering, which causes the mycelium to suffocate. The compost becomes watery and darkens while theres an objectionable odor in the room because of putrefactive bacteria.

When the infection is severe, the nematodes swarm in great amounts on the casing surface. They form columns that look like erect waving sticks and thin threads that flicker in the light. In this condition, nematodes are able to adhere to flies, mites and personnel that harvest mushrooms.


The swarming of nematodes of the casing surface


The swarming of nematodes of the casing surface
Moreover, nematodes can have the ability to dry slowly and form a cyst; a temporary protective layer due to which they can survive in adverse conditions, being in a dormant state for a long period of time. In this state, nematodes are easily spread by wind. Parthenogenesis, which is the kind of sexual reproduction that allows females to reproduce without males, makes it possible for the nematode population to grow in favorable conditions.


Half-empty beds the result of severe infection of the casing layer by nematodes


Half-empty beds the result of severe infection of the casing layer by nematodes
A poor harvesting technique: that is when mushroom stipes and remains are left on the beds promotes the development of nematodes, hence they will feed on decaying mushroom tissue.

Comments

Without chicken manure compost? Yes, it's possible...

Shankar India:

Sir please send formula for compost
Preparation without chicken manure.
Email: shankarsoftwr@gmail...

Without chicken manure compost? Yes, it's possible...

Zainab noor, Karachi Pakistan:

Hello. I am eager to know what alternate you have used instead of poultry manure for nitrogen. Please...

:

Mr. Shaurya good day, Sorry I was on business travel. Because of it, I couldn't answer at your request...

Mushroom Days exhibition in Holland 29th 31st of...

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Compost production: estimation of the process according...

hsham shhaq:

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Mushrooms in the basement (third part)

ferasof syria:

its m3

Shaurya Hoshiarpur punjab:

Sir you please go for decomposed coir pith, thats the best casing material for mushrooms as it has almost...

Shaurya Hoshiarpur Punjab india:

For flies I would suggest take a bulb holder and fit bulb and wrap it with polythene bag and than apply...

How long can mushrooms be kept fresh?

Thiru:

I am from. Chennai, India. Interested in attending a mushroom course at your place.. Kindly advise...

How long can mushrooms be kept fresh?

Ferozepur:

Which grade of formalin use for mushrooms

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