Group 2 herbicides exhibit high bioactivity at low concentrations in soil and may persist into the next growing season causing crop injury. A bioassay that is suitable for the detection of a range of Group 2 herbicides was ...

Advantages of Group 2 herbicides include low use rates, broad spectrum weed control and low mammalian toxicity. However,Group 2 herbicides often persist in soil and cause damage to subsequent crops in rotation. Phytotoxicity ...

A new method for the quantitative determination of 2,4-D in soils by use of anion-exchange membranes with GC detection was developed. Preliminary investigation of ion-exchange properties of pure 2,4-D acid on the membranes ...