Question

what increases number of friendly microbes in the soil​

Answer 1

Answer:

Humus

Explanation:

There should be no use of fertilizers, pesticides and insecticides. Organic manure shall be used. Proper ploughing also helps.

Answer 2

Answer:

Microbes eat and digest organic matter. Keep adding compost, manure, plant cuttings, wood chip mulch etc, to your soil. Just growing plants in the soil will provide organic matter for microbes to eat. Disturb the soil as little as possible.

Explanation:

Soil microorganisms can be classified as bacteria, actinomycetes, fungi, algae and protozoa. Each of these groups has characteristics that define them and their functions in soil. Up to 10 billion bacterial cells inhabit each gram of soil in and around plant roots, a region known as the rhizosphere.