Fig. 1. Soil N availability, soil nitrate, and forage total N of grass treated with (a) one application of manure after each cutting, Field 1a in 2001 (old seeding); (b) two applications of manure, three times, Field 1b in 2001 (old seeding); and (c) two applications of manure, four times, Field 1c in 2001 (old seeding).