Decomposition of Linuron in Different Soils

Summary. A glasshouse experiment was performed in which linuron was added to five Norwegian soils. Chemical residue analysis and bioassay tests showed that the rate of decomposition varied for the different soils and that the linuron content which produced a reduction in growth of ryegrass seedlings varied with soil type. No leaching into the lower layers occurred. An initial depression in the numbers of bacteria and fungi present in the soils was observed, but the populations later recovered.