Soil residues of sulfosulfuron herbicide in wheat field determined by bioassay and laboratory methods

Although herbicides are used for weed control in the field, their residues can have unfavourable environmental impacts. The objective was to determine sulfosulfuron herbicide wheat field soil using bioassay and laboratory (HPLC) methods. two-year experiment a randomised complete-block design (RCBD) with three replicates at control, recommended (26.6 g/ha, D1) doubled (53.2 D2) rates. Soil samples (0–10 cm) were collected randomly intervals ranging from 0 125 days after spraying. Greenhouse experiments (bioassay method) eight plant species indicated garden cress (Lepidium sativum L.) corn (Zea mays as most least sensitive ones, respectively. stable D1 up 90 use, 1.41 0.52 μg/kg 2019 2020, However, use no observed. With time both treatments, decreased or percentage of loss increased. sensitivity HPLC method detect less than method. three-parameter sigmoid equation mean DT50 D1, averaged two years it 19 days.