Fig. 5. Soil nitrate-N concentration to a depth of 1.2 m for 10 treatments in 4 yr. CN is compost for N, CP is compost for P, MN is manure for N, MP is manure for P, FR is inorganic fertilizer, CK is check, and 2Y is biennial application.
Fig. 5. Soil nitrate-N concentration to a depth of 1.2 m for 10 treatments in 4 yr. CN is compost for N, CP is compost for P, MN is manure for N, MP is manure for P, FR is inorganic fertilizer, CK is check, and 2Y is biennial application.