However, these herbicides appear to be more persistent under basic than acidic conditions. These compounds have high to very high acidity, moderate to high water solubility, and very low volatility. Both water solubility and soil retention depend on soil pH, with maximum soil adsorption occurring under acid conditions. Soil retention is very low to low. Soil binding is greatly influenced by soil organic matter.
Persistence ranges from short to long.
Dissipation is due to microbial decomposition, with warm, moist conditions favoring decomposition. These herbicides exhibit high acidity, very high water solubility and very low volatility. They readily react with clay and metal oxides in soils to form insoluble iron, aluminum and calcium precipitates. As a result, they have very high soil retention. Soil mobility is very low.