Table 3: Grass density (plants m−2; mean ± SE) under different biosolids rates and two methods of biosolids application at a seeded abandoned field in Chihuahua, Mexico.

Biosolids rate (Mg ha−1)BioIncaBioSur

0
10
20
30

BioInc: soil-incorporated method; BioSur: surface-applied method. Biosolids rate mean values followed by different lowercase letters within each method of application are significantly different ( ; ). Method of application mean values followed by different uppercase letters within each biosolids rate are significantly different ( ; ).