Soil microflora
[54] Aquatic and microscopic species are cultured in clear tanks or ponds and are either
harvested or used to treat effluents pumped through the ponds. Algaculture on a large scale is
an important type of aquaculture in some places. Maerl is commonly used as a soil
conditioner.
Factors incluencing soil microflora
1. Cultural practices (Tillage):Cultural practices viz. cultivation, crop rotation, application of
manures and fertilizers, liming and gypsum application, pesticide/fungicide and weedicide
application have their effect on soil organism. Ploughing and tillage operations facilitate
aeration in soil and exposure of soil to sunshine and thereby increase the biological activity of
organisms, particularly of bacteria. Crop rotation with legume maintains the favorable
microbial population balance, particularly of N2 fixing bacteria and thereby improve soil
fertility.
Liming of acid soils increases activity of bacteria and actinomycetes and lowers the fungal
population