Trichoderma virens |

Last updated: 23/08/2025
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(Also known as: Gliocladium virens) |
The following alerts are based on the data in the tables below. An absence of an alert does not imply the substance has no implications for human health, biodiversity or the environment but just that we do not have the data to form a judgement. These hazard alerts do not take account of usage patterns or exposure, thus do not represent risk.
Environmental fate |
Ecotoxicity |
Human health |
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A naturally occurring, common soil fungus that has been shown to suppress a variety of soil-borne plant pathogens |
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Various soil-borne plant pathogens, including Pythium spp., Rhizoctonia solani, and Sclerotium rolfsii that cause damping-off, root rots and other seedling diseases |
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Protected and field crops including legumes, brassicae, tomatoes, lettuce, cotton and ornamentals |
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Spores have a faint vinegar odour. They do not possess any known sexual stage in their life cycle and are rapid colonisers, invasive, filamentous, opportunistic, avirulent and exhibit a symbiotic relationship with plants. |
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Class: Sordariomycetes; Order: Hypocreales; Family: Hypocreaceae |
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Not approved |
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Not applicable |
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No UK approval for use as a plant protection agent |
EC Regulation 1107/2009 (repealing 91/414) |
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Not approved |
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Not applicable |
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Not applicable |
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Not applicable |
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No |
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ATAustria |
BEBelgium |
BGBulgaria |
CYCyprus |
CZCzech Republic |
DEGermany |
DKDenmark |
EEEstonia |
ELGreece |
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ESSpain |
FIFinland |
FRFrance |
HRCroatia |
HUHungary |
IEIreland |
ITItaly |
LTLithuania |
LULuxembourg |
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LVLatvia |
MTMalta |
NLNetherlands |
PLPoland |
PTPortugal |
RORomania |
SESweden |
SISlovenia |
SKSlovakia |
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ISIceland |
NONorway |
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Not applicable |
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No |
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Fungicide |
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Micro-organism |
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Natural |
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Mycoparasitic |
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Common throughout the United States |
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Crop protection |
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Various soil-borne plant pathogens, including Pythium spp., Rhizoctonia solani, and Sclerotium rolfsii that cause damping-off, root rots and other seedling diseases |
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Protected and field crops including legumes, brassicae, tomatoes, lettuce, cotton and ornamentals |
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Suitable for use in all farming systems where approved for use in that country |
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129000 |
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Trichoderma virens GL-21 |
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Not applicable |
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Not applicable |
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Not applicable |
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BM02 |
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Fungus |
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Current |
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1990, first registered USA |
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- Certis
- Thermo Trilogy Corp.
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- SoilGuard 12G
- Gliocladium virens
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Usually supplied as a granule formulation that are mixed with soil or other growth media a day before or at the same time as seeding, planting, or transplanting. |
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The commercial production of Trichoderma virens centres on cultivating its chlamydospores, which are the durable, biocontrol-active spores used in products like SoilGard. The process typically involves submerged liquid fermentation in large-scale bioreactors ranging from 20 to 4000 litres, where the fungus is grown under carefully controlled conditions to maximise spore yield and viability. Key parameters such as nutrient composition, aeration, pH, and temperature are optimised to promote the formation of mature chlamydospores, which are then harvested, dried, and formulated into granular or wettable powder products. |
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As this parameter is not normally measured directly, a surrogate measure is used: ‘Photochemical oxidative DT₅₀’. Where data is available, this can be found in the Fate Indices section below. |
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Soil adsorption and mobility |
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None
Terrestrial ecotoxicology |
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Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source No adverse effects expected or identified |
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Non-toxic |
Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source No adverse effects expected or identified |
Non-toxic |
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Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source No adverse effects expected or identified |
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Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source No adverse effects expected or identified |
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HUMAN HEALTH AND PROTECTION |
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Not applicable |
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Carcinogen |
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Endocrine disruptor |
XNo, known not to cause a problem |
A0 A = Chromosome aberration (EFSA database) 0 = No data ; B0 B = DNA damage/repair (EFSA database) 0 = No data ; C0 C = Gene mutation (EFSA database) 0 = No data ; D0 D = Genome mutation (EFSA database) 0 = No data ; E3 E = Unspecified genotoxicity type (miscellaneous data source) 3 = Negative |
XNo, known not to cause a problem |
Reproduction / development effects |
Acetyl cholinesterase inhibitor |
Neurotoxicant |
XNo, known not to cause a problem |
XNo, known not to cause a problem |
XNo, known not to cause a problem |
Respiratory tract irritant |
Skin irritant |
Skin sensitiser |
XNo, known not to cause a problem |
XNo, known not to cause a problem |
?Possibly, status not identified |
Eye irritant |
Phototoxicant |
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XNo, known not to cause a problem |
No data found |
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No adverse health effects identified |
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No information available |
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Not listed (Not listed) |
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Trichoderma virens |
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Record last updated: |
23/08/2025 |
Contact: |
aeru@herts.ac.uk |
Please cite as: |
Lewis, K.A., Tzilivakis, J., Warner, D. and Green, A. (2016) An international database for pesticide risk assessments and management. Human and Ecological Risk Assessment: An International Journal, 22(4), 1050-1064. DOI: 10.1080/10807039.2015.1133242 |