Diuron and chlorotoluron herbicides dissipation and leaching out from the peat substrate of containers of ornamental plants in nursery

摘要

One year old conifer plants were grown on peat substrate in containers in a field nursery. One of diuron(1.25 kg ha~-1)or chlorotoluron(1.5 kg ha~-1)were applied on separate field plots(one herbicide per container and per plot). For the herbicide treatment, some pots were set in a tem- porary location away from the rest of experiment; thereafter these pots were placed on lysi- meter tables set in the center of the plots treated with the same herbicide applied at the same dose and date.