testsThe germination test duration differed among the four species because itdepended on the species-specific germination rate. R. acetosa achieved the highestgermination rate. Ten days after sowing, 80% of the seeds had already germinatedand after 17 days the germination test could be stopped for this species due to itshigh germination rate in all treatments. All other species showed a lower germina-tion rate. R. acris started to germinate eight to ten days after sowing and achieveda germination rate of around 30% in the control after 30 days. For this species, thegermination test was stopped 53 days after sowing because only a few more seedsgerminated per week. The germination test for L. pratensis also ran for 53 days,whereby the seeds showed a low germination rate of