When can biosolids be applied?
Regulations vary from state to state, but usually liquid and dewatered biosolids used in place of commercial fertilizers must be applied during the growing season, roughly March 1 to November 15, depending upon where the site is located. These materials cannot be applied to frozen or snow-covered ground, or immediately after a heavy rain when the soil is saturated. Products, such as compost or AASS, may be applied year-round so long as the application does not result in excessive runoff. These products may be applied in the winter, and may be applied to frozen ground. They are treated like any other agricultural products for which they are a substitute.
