Einfluß von Stickstoffdüngung auf die Umwandlung von Monolinuron-[Phenyl-14C] im Boden und seine Aufnahme durch höhere Pflanzen unter Freilandbedingungen

Effects of nitrogen fertilizer on the fate of monolinuron in the soil-plant-system Quantitative changes in the fate of monolinuron in soil and crops (potatoes, barley) produced by nitrogen fertilization were investigated in a lysimeter-type set-up. Since crop yields were increased by the fertilizer, lower concentrations of residues were found as expected compared to the blank experiment. The total quantity of residues, however, in plants and soil was increased during the first vegetation period by the fertilizer. The major portion of residues was found at the site of application (upper soil layer). Following TLC analysis of soil extracts, no difference in the chemical structures of the residues was found between fertilized and non fertilized lysimeters.