Comfrey extract |
Last updated: 26/05/2024
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(Also known as: comfrey steeping; comfrey tea; Symphytum officinale extract) |
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.
Environmental fate |
Ecotoxicity |
Human health |
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A plant extract that is primarily used as a fertiliser and soil condition but which also has use as an insect repellent and plant elicitor |
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Aphids and other insects; Common fungi |
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Fruit trees; Grass; Vegetables |
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Current |
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Class: Magnoliopsida; Order: Boraginales; Family: Boraginaceae |
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Not applicable |
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Not applicable |
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No UK approval for use |
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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Yes |
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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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Insecticide, Semiochemical, Insectifuge, Fungicide, Other substance |
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Fertiliser; Soil conditioner, Plant elicitor |
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Plant-derived substance |
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Natural; Complex mixture |
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Multi-modes of action cited in literature, mainly as a plant strengthener providing improved resistance to insect and fungal attacks |
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Extracted from the comfrey plant (Symphytum officinale , L.) |
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Plant macerration to release liquid |
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Crop protection |
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Aphids and other insects; Common fungi |
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Fruit trees; Grass; Vegetables |
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84696-05-9 |
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283-625-3 |
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Comfrey tea |
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Not applicable |
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Not applicable |
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Not applicable |
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Not applicable |
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The concentrated steeping extract is a thick,dark liquid |
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Symphy |
Greenprotech |
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Usually supplied as a dispersible concentrate for spraying or seedling watering |
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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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HUMAN HEALTH AND PROTECTION |
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Carcinogen |
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Endocrine disruptor |
?Possibly, status not identified |
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 ; E2 E = Unspecified genotoxicity type (miscellaneous data source) 2 = Mixed/ambiguous results |
No data found |
Reproduction / development effects |
Acetyl cholinesterase inhibitor |
Neurotoxicant |
No data found |
No data found |
No data found |
Respiratory tract irritant |
Skin irritant |
Skin sensitiser |
No data found |
No data found |
No data found |
Eye irritant |
Phototoxicant |
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No data found |
No data found |
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Comfrey extracts can contain pyrrolizidine alkaloids, some of which re suspected hepatoxins, genotoxins and carcinogens Links with heptic veno-occlusive disease have been demonstrated |
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No information available |
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comfrey extract |
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Record last updated: |
26/05/2024 |
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 |