Which factor is stated as the single most important determinant of a chemical's soil residence time?

Answer

The specific chemical compound involved

The text explicitly states that the single most important factor dictating how long a chemical stays in the soil is the specific chemical compound itself, as different pesticides are engineered with differing intended residence times.

Which factor is stated as the single most important determinant of a chemical's soil residence time?
environmentchemicalpersistencesoil