English Abstract This report describes the results of a literature
research belonging to the RUVM-part of a research on the phytotoxicity for
80 priority substances, which was carried out by TNO and RIVM. In the
RIVM-part of this research effects of 45 organic substances were determined
on germination, growth and mortality of lettuce (Lactuca sativa). Most of
the substances belong the the chlorophenols, chlorobenzenes, chloroanilines,
alcohols and amines. Often EC50-values determined in Fytotox 2 were lower
than EC50-values found in literature, espcially for chlorophenols and
alcohols. In Fytotox 2 EC50-values were mainly lower, because plants were
exposed for a longer period in this test. EC50-values for algae were
generally in agreement with EC50-values for higher plants. Root length of
intact plants seemed to be the most sensitive parameter to measure effects
on the growth of plants. Differences in sensitivity between plant species
within one test method were usually small (< factor 3).
