Fig. 2.

Seedlot establishment test (SET) based seeding rate treatment effects on switchgrass aboveground biomass dry matter (DM) in 2003 4 or 5 mo after planting and aboveground biomass DM in 2004 13 or 14 mo after planting at two field sites (Sites 2 and 3) seeded on 28 May and 27 June in 2003 near Mead, NE. Treatments were: PLS, pure live seed; NP, no prechill; P, prechill; H, heat stress; E4, emergence through 4 cm of sand; and H+2, heat stress plus emergence through 2 cm of sand. Fisher's protected LSD _{(0.05)} values at Site 2 were 325 and 1152 kg ha^{−1} for the harvests conducted 5 and 14 mo after planting, respectively. Fisher's protected LSD_{(0.05)} values at Site 3 were 170 and 1173 kg ha^{−1} for the harvests conducted 4 and 13 mo after planting, respectively.