573808.fig.004
Figure 4: Forage production under different biosolids rates, methods of application, and grass species at a seeded abandoned field in Chihuahua, Mexico. BioInc: soil-incorporated biosolids; BioSur: surface-applied biosolids; Bogr: Bouteloua gracilis; Ledu:  Leptochloa dubia; , , , ; , , , ; , , , ; , , , .