Agriculture Reference
In-Depth Information
F
S
A
B
Figure 3.6.
A view of soil microorganisms obtained by burying a slide in soil for several days after
removal and staining. Bacteria (B), actinomycets (A), spore (S), and fungi (F) can be clearly seen.
M
An
= Clay
= Sand
M
A
= Water
= Silt
A = Water filled pore
Figure 3.7.
A representation of a soil ped showing aerobic areas around peds and at pore mouths
(A) and anaerobic areas (An). The pore labeled A will be anaerobic in the middle and will not
drain because of the small diameter of the pore mouths. The points labeled M will be
microaerophilic.
