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ICAR–DMRSolanCrop-specific reading path · Pleurotus species
Identify the actual Pleurotus species and strain. Track whether a problem starts before bag opening, at a cut, on a cluster or after harvest.
Keep the original cultivation guide open →White surface mycelium and strain-dependent shape are not diagnoses. Colonisation time and cap colour vary between oyster types.
Evidence boundary: Green mould, blotch and viruses have separate evidence. One species or strain study does not describe every oyster.
These links are a differential list, not a claim that your crop has all these diseases. Each entry states whether it is an established host report, a regional study or a generic process/safety risk.
Bacterial diseases
Blotching in oyster needs its own host context. Different strains reacted differently to a controlled bacterial challenge.
Detailed evidence here concerns tested P. ostreatus, P. pulmonarius and P. cf. floridanus strains. King oyster is a differential, not a claim that this trial tested it.
Signs, checks & response →Bacterial diseases
Wet, collapsing tissue is a reason to separate produce and investigate timing. It can be a primary infection or secondary decay after injury.
Symptom differential. The cited Burkholderia evidence includes Agaricus bitorquis; it is not the cause of every soft rot on this crop list.
Signs, checks & response →Viruses & culture health
A mycovirus can alter crop performance in a susceptible strain, but contamination and growing conditions must also be investigated.
Experimental evidence in particular P. ostreatus and P. pulmonarius strains; not a universal explanation for poor oyster crops.
Signs, checks & response →Viruses & culture health
A clean-looking culture can lose desirable fruiting behaviour. Conversely, a failed crop does not prove that the strain has genetically degenerated.
Detailed research cited for Cordyceps militaris; other crop filters indicate a culture-quality investigation, not the same mechanism.
Signs, checks & response →Viruses & culture health
Separate three questions: was the spawn viable, was the substrate suitable, and was the inoculation/handling process sound?
Applies from grain spawn to compost, straw and supplemented wood substrates.
Signs, checks & response →Pests & vectors
Adults are a monitoring clue. Larvae feeding in substrate, pins or mushrooms cause the direct crop damage.
Production-system risk across crops; most detailed guidance cited concerns commercial Agaricus.
Signs, checks & response →Pests & vectors
Phorids must be distinguished from sciarids because monitoring and biological-control choices are not interchangeable.
Strong commercial Agaricus context; other crops require identification of the actual fly.
Signs, checks & response →Pests & vectors
Tiny larvae in wet crop material can be overlooked when a farmer only watches for flying adults.
Historical Indian pest group; local identification is essential.
Signs, checks & response →Pests & vectors
Some mites damage crops or carry contaminants; others feed on mould or other small organisms. Their presence may point to an underlying contamination problem.
A small moving speck is not enough to identify a harmful mite.
Signs, checks & response →Pests & vectors
Crop decline in wet substrate may justify examination for nematodes, but the presence of nematodes alone does not establish the cause.
Nematode function depends on identity; not all are harmful to mushrooms.
Signs, checks & response →Pests & vectors
Jumping specks and surface grazing require identification and evidence of damage. Not every organism found near a crop is its primary problem.
A broad pest differential, especially where substrate contacts soil or wet organic residues.
Signs, checks & response →Pests & vectors
Missing tissue is not necessarily disease. Feeding, physical damage and contamination by animals require different responses.
Outdoor/log cultivation and entry into protected farms; exact risks vary with location.
Signs, checks & response →Pests & vectors
Identification can prevent the removal of useful organisms. Biological control still needs the correct pest, product, conditions and local legal status.
A decision guide, not an instruction to release an unapproved organism.
Signs, checks & response →Environmental disorders
Interpret shape against the intended crop. Air exchange, carbon dioxide, light and crowding interact; a single photograph cannot choose a ventilation setpoint.
Species and strain matter: a shape desired in enoki or king oyster may be undesirable in another crop.
Signs, checks & response →Environmental disorders
Room humidity does not tell the whole water story. A crop can have wet caps in one rack zone and drying injury in another.
All production systems, with different crop-specific tolerances.
Signs, checks & response →Environmental disorders
A room-air reading can miss a hot substrate core. Equally, a cold chain suitable for button mushrooms must not be assumed suitable for paddy straw.
Substrate, crop and storage temperatures must be interpreted separately for each species.
Signs, checks & response →Environmental disorders
Poorly colonised substrate can be a process failure before a competitor arrives. Treating the visible late mould may miss the original cause.
Ammonia/conditioning is especially relevant to button compost. Bag substrates use different preparation systems.
Signs, checks & response →Environmental disorders
Unexpected forms or lesions after cleaning, spraying or nearby fuel use need an exposure history as well as a disease differential.
Rosecomb is classically described in Agaricus; broader crop filters cover exposure investigation, not identical symptoms.
Signs, checks & response →Environmental disorders
Counting days is not the same as checking readiness. Poor fruiting can follow immature substrate, an unsuitable transition, culture quality or infection.
Species-specific induction and fruiting systems, including cased and uncased crops.
Signs, checks & response →Food & worker safety
Separate when damage started from when someone noticed it. That distinction prevents a storage problem being mislabelled as a growing-room disease.
Harvest, packing, transport and storage; a crop can deteriorate after leaving a healthy room.
Signs, checks & response →Food & worker safety
A healthy-looking mushroom is not proof of food safety. A crop-disease photo guide cannot detect Listeria, Salmonella or unacceptable residues.
All edible-mushroom food chains; enoki outbreak evidence is a specific example, not a claim about every crop.
Signs, checks & response →Food & worker safety
Removing a mouldy crop must not create a dust cloud. The work method and source control are central to protecting people.
Substrate preparation, harvesting, waste handling and cleaning can create different exposures.
Signs, checks & response →Fungal diseases
A bag can contain competing mould before green colour is visible. Oyster-associated Trichoderma species differ from the main button-mushroom epidemic species.
Detailed pathogen evidence exists for Pleurotus; the other listed crops have published green-mould host reports, not a shared diagnosis.
Signs, checks & response →Competitor moulds
Old farm manuals use colour and texture names. They are useful search terms, but a visible colony rarely supports a species-level diagnosis.
A historical-name register, not proof that every organism occurs on every listed crop.
Signs, checks & response →Competitor moulds
Rapidly spreading orange growth is an operational contamination problem. A history of food use for selected Neurospora strains does not make an unknown colony safe.
Generic substrate-contamination differential; not a confirmed disease report for every crop listed.
Signs, checks & response →Competitor moulds
Green, blue-green or dark growth is not automatically Trichoderma. Neither harmlessness nor toxin production can be established from its colour.
Raw-material, spawn, substrate and storage contamination differential across production systems.
Signs, checks & response →Competitor moulds
Upright fuzzy growth with tiny dark heads is an observation to record, not a reliable species identification.
Generic contamination differential, not a proven host disease on all crops.
Signs, checks & response →Competitor moulds
Slime moulds belong outside the true fungi. They can cover production surfaces or fruit bodies, but interpretation requires more than appearance.
Reported on several cultivated mushrooms and substrates; presence does not automatically mean parasitic disease.
Signs, checks & response →Komon-Zelazowska et al., Applied and Environmental Microbiology · 2007
Used for: Molecular distinction of oyster-associated green-mould taxa from the Agaricus epidemic organism.
Limit: Historical nomenclature includes T. pleurotum; current papers commonly use T. pleuroti. A green patch is not species confirmation.
Okorley et al., Pathogens 8:227 · 2019
Used for: Experimental inoculation and strain-dependent responses; Figure 1 infected and control fruit bodies.
Limit: Controlled challenge photographs are not natural farm incidence or proof of immunity. CC BY 4.0.
Biology · 2022
Used for: OMSV-associated malformation and reduced growth in a tested P. ostreatus strain.
Limit: Preliminary, strain-specific work. Laboratory virus curing is not a DIY crop treatment.