Commodity PRA for Agaricus bisporus - Defra

Weed mould Synonym Notes on worldwide
distribution
Trichoderma atroviride Hypocrea atroviridis Occurs wherever mushrooms
are grown. Also present on
other hosts.
Trichoderma harzianum Trichoderma lignorum var. Cosmopolitan on a range of
narcissi,
hosts and habitats Recorded
Trichoderma narcissi in mushroom compost in
Hungary. Probably occurs
wherever mushrooms are
grown. Some strains of T.
harzinum are known to not
cause problems in
mushroom production.
Trichoderma koningii Acrostalagmus koningii North temperate on a range
of hosts and habitats. Likely
to occur in mushroom
compost wherever
mushrooms are produced.
Green mould outbreaks
originally attributed to be this
species might have actually
been caused by a species in
the T. aggressivum complex.
Trichoderma longibrachiatum Cosmopolitan on a range of
hosts and habitats Recorded
in mushroom compost in
Hungary. Probably occurs
wherever mushrooms are
grown.
Commodity PRA for Mushrooms
CSL/Warwick HRI, December 18th 2007; revised 24 February 2009
CSL Registered File No. PPP 12011A
Notes on UK distribution Reference
Present and relatively common
in mushroom compost in the UK.
Present, not known if the strains
recorded on UK mushroom
composts are strains of T.
harzinum or isolates of
Trichoderma aggressivum f.
europaeum.
Present on numerous
hosts/habitats in the UK. One
record in BMS for its occurrence
in mushroom compost.
However, in the last decade this
species is only considered to
have caused very minor
problems.
Present in the UK in a wide
variety of habitats. Possibly may
occur in mushroom compost.
Dodd et al. (2003); BMS
(undated)
Hatvani et al. (2007);
BMS (undated)
BMS (undated); Farr et
al. (undated); CABI
(undated)
Seaby (1996); Samuels
(2006).
Hatvani et al. (2007)
42