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Spatial and temporal variation of isoproturon (IPU) residues (IPU r ), and their sorption (K d ) and desorption (Kapp) coefficients were monitored at the field scale in the cultivated horizon of a clay soil following pre-and post-emergent IPU applications to a winter barley crop. The half life in 25 subplots ranged from 31 to 483 days with a median value of 90 days. Kapp increased...
Samples of mixed herbage were collected in 1993 and 1994 from the Park Grass Experiment at Rothamsted Experimental Station in the UK. The samples were separated into grasses and other species and the material in each group was then halved; one half was washed and the other was left unwashed. Analysis of Cd was by Zeeman correction GFAAS following a nitric acid digestion. The results showed that...
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