Alexander Tsarev
Mushroom industry

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Mycophytic nematodes

These nematodes feed only on fungi. Two species, Ditylenchus myceliophaguss and Aphelenchoides composicola were identified by researchers as mushroom pests that disturb mycelium growth.

They are characterized by a needlelike mouthpart with which they pierce the mycelial hyphae, inject digestive juices and suck out the cell contents. The cells die, and the nematodes that move from cell to cell destroy the hyphal structures. Moreover, it is assumed that nematodes that pierce mycelial threads, spread bacterial and virus diseases. In areas where mycelium dies, the compost becomes soggy and depressed an objectionable odor occurs because of anaerobic bacteria activities.

Mycophytic nematodes differ from saprophytic nematodes because they cant reproduce asexually and dont form flickering columns.

The presence of nematodes on mushroom beds indicates bad cultivation conditions, that is, poor substrate and casing soil preparation and nonobservance of the rules of sanitation and hygiene.

The degree of crop losses depends on the time and level of the initial infection. Infection at spawning time can have an effect on mycelial growth and thus making cultivation unprofitable from an economical point of view. Infection occurring later causes only minor crop losses and goes unnoticed by the mushroom grower.

The nematode control measures are mainly used to prevent their spreading on the farm. This can be achieved, if all operations are carried out properly. Well prepared and pasteurized compost ensures fast and healthy mycelial growth and makes it impossible for the pests to spread.

When its suspected that the source of infection is peat (though the bottom layers of peat in beds dont contain pests), all incoming batches of peat should be tested for the presence of nematodes. Peat that contains pathogenic organisms has to be disinfected and stored in a clean room in order to escape recurring infection.

Growing rooms that are infected with nematodes (if its rational) should be kept at low temperatures and dry, as far as it is possible. In the end of the cultivation cycle, they have to be steamed, making sure the temperature remains at the same level in all parts of the room 70C.

When steaming is impossible, the compost is fumigated with methyl bromide. All spent compost must be immediately removed from the farm territory.

Measures must be taken to prevent the spread of nematodes by insects, personnel and implements.

At normal hygienic conditions and short cultivation cycles (2-3 breaks), nematodes dont often cause serious problems. However, mushroom growers must use all resources in order to prevent the occurrence and spreading of nematodes on the farm, hence its impossible to control them during the cultivation cycle.

Comments

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

Baguio City, Philippines:

Pls send me the formula and process without using chicken manure. I want to know how to grow buttons...

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

Tehran:

Hello, and How are you?
I have a question about the compost without chicken manure> if possible...

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

hossen,dezful,iran:

that is astonishing! Very well done! Please email me the entire formula and method of preparing this...

Mushroom Research Institute/ MENA:

THE MOST IMPORTANT IN PRODUCING HIGH QUALITY COMPOAT IS TO KEEP THE NITROGEN CONTENT...

Attention! Trichoderma

Darren:

Hi for more info of trichoderma,please check

Compost Production. Personal opinion(Part 2)

levsam, Nairobi:

many thanks to this website.i would like to know why is preferably to use forest soil instead of farm...

Compost Production. Personal opinion(Part 2)

Yogesh awana ,Gurgaon:

I am new to Button Mushroom though I have done the technical course from DMR, Solan HP
I want you...

Compost Formula

ankit raheja, new delhi:

dear sir,

could you suggest the compost formula to obtain 2.1 to 2.5% nitrogen.
through which...

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

RASOUL:

PLEASE SEND YOUR FORMULA without-chicken-manure-compost
TNX
AHOKHOSH@GMAIL.COM

How long can mushrooms be kept fresh?

Beatriz souza:

Gostaria de saber mais sobre o material usado na cobertura

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