Establishment of Native Grasses with Biosolids on Abandoned Croplands in Chihuahua, Mexico

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; 𝑌_BioInc-Ledu=389.4+52.29𝑥, 𝑃=0.0003, 𝑟²=0.74, 𝑛=12; 𝑌_BioSur-Ledu=229.95+325.99𝑥−9.23𝑥², 𝑃=0.0001, 𝑟²=0.94, 𝑛=12; 𝑌_BioInc-Bogr=185.65+41.86𝑥−1.48𝑥², 𝑃=0.0039, 𝑟²=0.39, 𝑛=12; 𝑌_BioSur-Bogr=147.77+43.12𝑥−1.59𝑥², 𝑃=0.0017, 𝑟²=0.75, 𝑛=12.