promoters. Pseudomonas species are known for promoting plant growth. Species of Aspergillus and Penicillum are also phosphate
solubilizing fungi (Alfa et al., 2014). The presence of all these
organisms makes the digestate useful as biofertilizer. Biofertilizers
are not only suitable for use as soil conditioners and fertilizers, but
can also suppress soil-borne and foliar plant pathogens (Hadar and
Mandelbaum, 1992).
The mean microbial count revealed decreasing trend in total
coliform, total aerobic plate and fungal in the biofertilizer digestate
as against their higher values in the feedstock (Table 2). This agrees
with (Shu-Hsien et al., 2007) that microbial population has a