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Ecotoxicological information

Toxicity to terrestrial plants

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Description of key information

NOEC (10 mo): 323 kg ha-1 (Boronia megastigma)

Effects were observed at 700 kg ha-1 (Lolium perenne)

Key value for chemical safety assessment

Additional information

No guideline studies are available on the toxicity of IBDU to plants. IBDU is used as a slow releasing N-fertilizer. In two field studies the effects of IBDU application to plant growth/ flowering were studied. Both studies significantly show that IBDU is rather promotive than inhibiting to plant growth and flowering. I.e. no toxic response was noted in bermudagrass (Cynodon sp.) after application of up to 1900 kg IBDU/ha every week, whereas off-color was observed in Lolium perenne after 1 month of application of approximately 700 kg IBDU/ha (Volk and Dudeck 1976, approx. 4 months duration). With IBDU, applied up to 323 kg per ha to Boronia megastigma, toxicity did not occur (Reddy and Menary 1989, approx. 10 months duration).