Question

Which of the following factors discourage the growth of microorganisms in the soil?

• A. Proper irrigation
• B. High organic content
• C. Presence of chemical pesticides
• D. Proper pH

Answer 1

The correct option is C

Presence of chemical pesticides

Microorganisms decompose dead plants and animals and add the much needed organic content to the soil. This increases soil fertility by adding essential elements necessary for plant growth. To survive and flourish, microorganisms need optimum conditions like proper pH and moisture. Some chemical pesticides are toxic to the microbial population and their use deteriorates the growth of soil microorganisms.