It is used as a soil building practice that adds organic residues, conserves and recycles plant nutrients and protects the soil from erosion.
(It; is used; as a soil building practice) (a soil building practice; adds; organic residues, conserves and recycles plant nutrients and protects the soil from erosion)
It a soil building practice
is used adds
as a soil building practice
organic residues, conserves and recycles plant nutrients and protects the soil from erosion