Symptoms include chlorosis at the leaf edges. The rapid disruption of cell membranes reduces herbicide movement, trapping them in a zone of death. It can be absorbed through the roots. It affects roots more than shoots. Effects are stubby, pruned roots.
Incorporation prevents volatilization and photo degradation.
Herbicide selectivity is not based on metabolism. Symptoms include root swelling, where the cells enlarge without cell elongation. Edge binds more tightly to organic matter than clay particles. This causes it to be unavailable to control weeds. It is degraded by sunlight especially on warm days.